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Wind Roses for Selected Areas
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Note: EPA no longer updates this information, but it may be useful for historical purposes.
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These
wind roses were prepared using the program WRPLOT.
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ZIP
files of the wind rose GIF images are available for download
at the bottom of this page. Click
here to
go to the bottom of the page.
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Corrections, Caveats, Explanations, Known Problems and FAQ
(Please read this before proceeding.)
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Warning:
There can be a visual misperception when reading
the wind roses.
The
wind roses are divided into 16 wind directions. Each
wind direction is divided into wind speeds. As the
percent of time the wind blows from a particular directions
gets larger, the portion of the bar representing the wind
speed gets larger both in length and width. This can
make for a visual misperception of the percent of time the
wind blows from a particular wind direction. For example,
on the Kalamazoo-Battle Creek, MI ozone season wind rose
(using Lansing), the WNW direction percentage is 8% while
the NW is 6%. This is only 2% larger, but visually
it looks almost twice as large. Therefore, be careful
to look at the percentage scale on the circles (the length
of the bar) and not just at the overall visual effect (which
would include both the length and the width of the bar).
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Wind Rose: Ozone Season
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Area
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Airport
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State
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WBAN
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Years
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Allentown-Bethlehem- Easton, PA
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Allentown (ABE)
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PA
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14737
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88-92
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Altoona, PA
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Pittsburgh
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PA
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94823
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88-92
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Amador Co, CA
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Sacramento
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CA
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23232
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87,89- 92
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Atlanta, GA
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Atlanta
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GA
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13874
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88-92
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Augusta-Aiken, GA-SC
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Augusta
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GA
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03820
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86-87, 90-92
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Baltimore, MD
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Baltimore
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MD
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93721
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87-88, 90-92
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Barnwell Co, SC
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Augusta
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GA
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03820
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86-87, 90-92
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Baton Rouge, LA
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Baton Rouge
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LA
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13970
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88-92
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Beaumont-Port Arthur, TX
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Port Arthur
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TX
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12917
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88-92
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Benton Harbor, MI
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South Bend
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IN
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14848
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88-92
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Benzie Co, MI
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Traverse City
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MI
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14850
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86-87, 89-90, 92
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Biloxi-Gulfport- Pascagoula, MS
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Mobile
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AL
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13894
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88-92
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Birmingham, AL
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Birmingham
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AL
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13876
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88-92
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Boston-Lawrence- Worcester (E. MA), MA
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Boston/Logan
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MA
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14739
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88-92
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Calaveras Co, CA
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Sacramento
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CA
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23232
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87,89- 92
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Canton-Massillon, OH
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Akron/Canton
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OH
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14895
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88-92
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Caroline Co, VA
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Richmond
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VA
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13740
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88-92
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Cass Co, MI
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South Bend
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IN
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14848
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88-92
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Caswell Co, NC
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Greensboro
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NC
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13723
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88-92
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Charlotte-Gastonia-Rock Hill, NC-SC
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Charlotte
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NC
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13881
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88-92
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Chattanooga, TN-GA
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Chattanooga
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TN
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13882
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88-92
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Chester Co, SC
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Charlotte
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NC
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13881
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88-92
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Chicago-Gary-Kenosha, IL-IN-WI
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Chicago/O'Hare
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IL
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94846
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88-92
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Cincinnati-Hamilton, OH-KY-IN
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Cincinnati/CVG AP
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KY
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93814
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88-92
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Clay Co, AL
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Birmingham
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AL
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13876
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88-92
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Clearfield Co, PA
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Pittsburgh
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PA
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94823
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88-92
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Cleveland-Akron, OH
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Cleveland
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OH
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14820
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88-92
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Clinton Co, OH
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Dayton
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OH
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93815
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88-92
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Columbia, SC
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Columbia
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SC
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13883
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88-92
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Columbus, OH
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Columbus
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OH
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14821
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88-92
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Dallas-Fort Worth, TX
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Dallas-Ft Worth
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TX
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03927
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88-92
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Dayton-Springfield, OH
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Dayton
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OH
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93815
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88-92
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Detroit-Ann Arbor-Flint, MI
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Detroit
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MI
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94847
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88-92
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Door Co, WI
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Green Bay
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WI
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14898
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88-92
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Edmonson Co, KY
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Louisville
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KY
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93821
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88-92
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Erie, PA
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Erie
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PA
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14860
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88-92
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Evansville-Henderson, IN-KY
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Evansville
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IN
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93817
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88-92
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Fayetteville, NC
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Raleigh-Durham
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NC
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13722
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88-92
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Fort Wayne, IN
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Fort Wayne
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IN
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14827
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88-92
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Franklin Co, PA
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Harrisburg
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PA
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14751
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88-92
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Frederick Co, VA
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Wash./Dulles
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VA
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93738
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87-88, 90-92
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Grand Rapids-Muskegon- Holland, MI
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Grand Rapids
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MI
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94860
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88-92
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Greater Connecticut, CT
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Hartford
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CT
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14740
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88-92
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Greenbrier Co, WV
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Beckley
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WV
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03872
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88-92
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Greene Co, PA
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Pittsburgh
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PA
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94823
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88-92
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Greensboro-Winston Salem-High Point, NC
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Greensboro
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NC
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13723
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88-92
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Greenville, NC
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Raleigh-Durham
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NC
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13723
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88-92
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Greenville-Spartanburg- Anderson, SC
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Grnvl-Spartan
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SC
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03870
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88-92
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Hancock & Waldo Cos, ME
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Bangor
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ME
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14606
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88-92
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Harrisburg-Lebanon- Carlisle, PA
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Harrisburg
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PA
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14751
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88-92
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Haywood Co, NC
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Asheville
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NC
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03812
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87-89, 91-92
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Haywood Co, TN
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Memphis
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TN
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13893
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88-92
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Hickory-Morganton- Lenoir, NC
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Charlotte
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NC
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13881
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88-92
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Houston-Galveston- Brazoria, TX
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Houston
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TX
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12960
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88-92
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Huntington-Ashland, WV-KY-OH
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Huntington
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WV
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03860
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88-92
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Huntsville, AL
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Huntsville
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AL
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03856
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87-88, 90-92
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Imperial Co, CA
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San Diego
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CA
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23188
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88-92
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Indianapolis, IN
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Indianapolis
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IN
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93819
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88-92
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Jamestown, NY
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Bradford
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PA
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04751
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88-92
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Jefferson Co, NY
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Syracuse
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NY
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14771
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88-92
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Jefferson Co, TN
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Knoxville
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TN
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13891
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87-88, 90-92
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Johnson City-Kingsport- Bristol, TN-VA
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Bristol
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TN
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13877
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88-92
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Johnstown, PA
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Bradford
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PA
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04751
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88-92
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Kalamazoo-Battle Creek, MI
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Lansing
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MI
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14836
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88-92
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Kansas City, MO-KS
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Kansas City
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MO
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03947
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88-92
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Kent & Queen Anne's Cos, MD
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Baltimore
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MD
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93721
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87-88, 90-92
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Kewaunee Co, WI
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Green Bay
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WI
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14898
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88-92
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Knox Co, OH
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Columbus
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OH
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14821
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88-92
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Knoxville, TN
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Knoxville
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TN
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13891
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88-92
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La Porte Co, IN
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South Bend
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IN
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14848
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88-92
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Lancaster, PA
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Harrisburg
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PA
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14751
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88-92
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Lexington, KY
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Lexington
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KY
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93820
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88-92
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Lima, OH
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Columbus
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OH
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14821
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88-92
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Longview-Marshall, TX
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Shreveport
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LA
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13957
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88-92
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Los Angeles South Coast Air Basin, CA
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Los Angeles/LAX
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CA
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23174
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88-92
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Louisville, KY-IN
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Louisville
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KY
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93821
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88-92
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Macon, GA
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Macon
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GA
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03813
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88-92
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Madison Co, VA
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Wash./Dulles
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VA
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93738
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87-88, 90-92
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Manitowoc Co, WI
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Green Bay
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WI
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14898
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88-92
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Mariposa Co, CA
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Fresno
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CA
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93193
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88-92
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Mason Co, MI
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Muskegon
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MI
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14840
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85-86, 90-92
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Memphis, TN-AR-MS
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Memphis
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TN
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13893
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87-88, 90-92
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Milwaukee-Racine, WI
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Milwaukee
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WI
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14839
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88-92
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Mobile, AL
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Mobile
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AL
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13894
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88-92
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Monterey Bay, CA
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San Francisco
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CA
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23234
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88-92
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Nashville, TN
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Nashville
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TN
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13897
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88-92
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Nevada Co, CA
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Sacramento
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CA
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23232
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87,89- 92
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New York-N. New Jersey- L.Island, NY-NJ-CT-PA
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New York City/JFK
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NY
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94789
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88-92
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Norfolk-Virginia Beach- Newport News, VA-NC
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Norfolk
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VA
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13737
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88-92
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Northampton Co, NC
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Raleigh-Durham
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NC
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13723
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88-92
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Oklahoma City, OK
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Oklahoma City
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OK
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13967
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88-92
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Owensboro, KY
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Evansville
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IN
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93817
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88-92
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Paducah, KY
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Paducah
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KY
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03816
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88-92
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Parkersburg-Marietta, WV-OH
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Huntington
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WV
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03860
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88-92
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Pensacola, FL
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Pensacola
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FL
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13899
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88-92
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Philadelphia-Wilmin- Atlantic City, PA-NJ
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Philadelphia
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PA
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13739
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88-92
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