Alert archive / Illinois / Special Weather Statements in 2011

Special Weather Statement, NWS Lincoln, IL

July 24, 2011McLean County, Illinois

NWS Lincoln, IL issued this special weather statement at Jul 24, 2011, 8:32 AM CDT for McLean County, Illinois. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 24, 2011, 8:32 AM CDT (13:32 UTC)
Expired: Jul 24, 2011, 9:30 AM CDT
In force: 58 min
Issued by: NWS Lincoln, IL

County McLean County, IL

The radar

The Lincoln radar (KILX), 68 km from the middle of the area, began a volume at 13:35 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.5 hours before the alert went out and 47 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3589 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this special weather statement went out at Jul 24, 6:19 AM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Jul 24, 6:19 AM CDT, 2 hours 13 minutes before

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Hazardous weather outlook, Jul 24, 6:00 AM CDT, 2 hours 32 minutes before

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In the hours before

Special weather statement, Jul 24, 7:34 AM CDT, 58 minutes before

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Local storm report, Jul 24, 8:19 AM CDT, 13 minutes before

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Special weather statement, Jul 24, 8:32 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
832 AM CDT SUN JUL 24 2011

ILZ031-038-241430-
MCLEAN-WOODFORD-
832 AM CDT SUN JUL 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR MCLEAN AND SOUTHERN WOODFORD
COUNTIES UNTIL 930 AM CDT...

AT 830 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF
CHENOA TO GOODFIELD...MOVING SOUTHEAST AT 25 MPH.

SMALL HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS.
SOME OF THE WIND GUSTS WILL OCCUR WELL AHEAD OF THE RAINFALL.

PEOPLE IN MCLEAN AND WOODFORD COUNTIES...INCLUDING THE CITIES OF
LEXINGTON...HUDSON...CARLOCK...DANVERS...TOWANDA...COLFAX...NORMAL...
STANFORD...COOKSVILLE AND BLOOMINGTON...SHOULD MONITOR THE WEATHER
SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO
TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 4062 8857 4062 8846 4029 8846 4029 8926
      4074 8926 4076 8859
TIME...MOT...LOC 1332Z 324DEG 20KT 4067 8864 4061 8920

GEELHART

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 24, 7:34 AM CDT	Special Weather Statement	ILX	Marshall	56 min
Jul 24, 8:22 AM CDT	Areal Flood Advisory	ILX	McLean, Marshall, Woodford	3 hr
Jul 24, 9:54 AM CDT	Special Weather Statement	ILX	Champaign, Douglas, Edgar, Vermilion	66 min
Jul 24, 11:48 AM CDT	Severe Thunderstorm Warning	ILX	Christian, Sangamon	42 min
Jul 24, 1:33 PM CDT	Special Weather Statement	ILX	Lawrence, Richland	42 min

Nearby

Special Weather Statements in Illinois, 2011 Every special weather statement in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.