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Midwest Surface Map
National Surface Map
 
Click on Surface Map to enlarge.
For an explanation on decoding this map,
click here
Maps are courtesy of the Hydrometeorological
Prediction Center
Current Hourly Weather Conditions
Illinois State Weather Roundup
National Radar Loop with Surface Analysis and Hazards
Hourly Weather Observations for the
last 3 days
The following observations are listed in decoded
format. You may click on the airport
identifier on the map, or use the links below the map. If you need to have the encoded
observations, visit the
Aviation Weather
Center's METAR page, using the airport identifier
listed.
Graphical & Text Displays of Hourly Weather
Observations for past 48 hours:
Some caveats about this data:
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This data has not been quality controlled, and
should be considered preliminary.
CERTIFIED climate data is
available from the National
Climatic Data Center
or from the
Midwestern Regional Climate Center.
Lack of data for a period of time may be the result of a communications
failure,
and the observations may still be available from one of the centers above.
Weather described as "fair" means that no clouds were observed
below
12,000 feet. This is a limitation of all automated stations, which make up nearly
all observations in the list.
-
Sky conditions give the general state of the sky, and the height of each
cloud layer.
Heights are given in hundreds of feet (e.g. 120 is 12,000 ft; 012 is 1,200 ft., 001 is
100 ft.). State of the sky is divided into SKC (sky clear), CLR (clear below
12,000 ft), FEW (2/8 or less cloud cover up to that height), SCT (3/8 through
4/8 of cloud cover up to that height), BKN (5/8 through 7/8 of cloud cover up to
that
height), OVC (sky cloudy), and VV (vertical visibility -- clouds obscured by
precipitation or obstructions to vision).
Weather "in the vicinity" indicates within 5 to 10 miles of
the station.
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