Alert archive / Illinois / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 158, NWS Lincoln, IL

July 24, 2010Schuyler County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 24, 2010, 2:42 PM CDT for Schuyler County, Illinois. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 24, 2010, 2:42 PM CDT (19:42 UTC)
Expired
Jul 24, 2010, 3:00 PM CDT
In force
18 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Schuyler County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 19:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 24, 1:53 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.7 hours before the alert went out and 163 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2010-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 396 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2010-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
396 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
865 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 24, 2:37 PM CDT, 5 minutes earlier.

Area forecast discussion, Jul 24, 2:37 PM CDT, 5 minutes before
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Hazardous weather outlook, Jul 24, 11:08 AM CDT, 3 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
1108 AM CDT SAT JUL 24 2010

ILZ038-040>043-048-251100-
DE WITT-LOGAN-MASON-MCLEAN-MENARD-SCHUYLER-
1108 AM CDT SAT JUL 24 2010

...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

HEAT INDEX VALUES WILL RANGE BETWEEN 100 AND 105 DEGREES FROM LATE
THIS MORNING THROUGH SUNSET...WHICH WILL PRODUCE HAZARDOUS
CONDITIONS FOR THOSE WHO MUST BE OUTDOORS FOR A PROLONGED PERIOD.

SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS MORNING...AND AGAIN
LATER THIS AFTERNOON. A FEW OF THE STORMS THIS AFTERNOON COULD
PRODUCE GUSTY WINDS AND TORRENTIAL RAINFALL...ESPECIALLY WEST OF
THE ILLINOIS RIVER. THE PRIMARY THREAT WITH THE STORMS THIS
AFTERNOON WILL BE FROM DAMAGING STRAIGHT LINE WINDS...ALONG WITH
TORRENTIAL RAINFALL AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE THREAT FOR ISOLATED THUNDERSTORMS WILL RETURN ON TUESDAY...
PRIMARILY DURING THE AFTERNOON AND EARLY EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO THIS
EVENING...ROUGHLY FROM 200 PM UNTIL 900 PM CDT.

ILZ044>047-049>057-061-251100-
CASS-CHAMPAIGN-CHRISTIAN-COLES-DOUGLAS-EDGAR-MACON-MORGAN-
MOULTRIE-PIATT-SANGAMON-SCOTT-SHELBY-VERMILION-
1108 AM CDT SAT JUL 24 2010

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS AND EAST CENTRAL ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

HEAT INDEX VALUES WILL RANGE FROM 105 TO 110 DEGREES THROUGH
SUNSET. THIS WILL PRODUCE DANGEROUS CONDITIONS FOR ANYONE WHO
NEEDS TO BE OUTDOORS FOR ANY LENGTH OF TIME.

AS A COLD FRONT MOVES SOUTHEAST INTO WESTERN ILLINOIS LATE THIS
AFTERNOON...SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE AREA.
SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING STRAIGHT
LINE WINDS...TORRENTIAL RAINFALL AND FREQUENT LIGHTNING INTO
THE EVENING HOURS.

FOR INTERESTS ALONG THE ILLINOIS RIVER...FLOODING IS EXPECTED TO
CONTINUE DOWNSTREAM FROM BEARDSTOWN THIS WEEK.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE COLD FRONT WILL SLIP JUST SOUTH OF THE AREA ON SUNDAY. AS A
RESULT...THERE WILL BE A CHANCE FOR THUNDERSTORMS DURING THE DAY.
NO SEVERE WEATHER IS ANTICIPATED.

THE THREAT FOR AT LEAST ISOLATED THUNDERSTORMS WILL CONTINUE
THROUGH MOST OF NEXT WEEK...PRIMARILY DURING THE AFTERNOON AND
EARLY EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON THROUGH THIS
EVENING...ROUGHLY FROM 300 PM THROUGH 900 PM CDT.

ILZ062-063-066>068-071>073-251100-
CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND-
1108 AM CDT SAT JUL 24 2010

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
ILLINOIS AND SOUTHEAST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

HIGHEST HEAT INDEX VALUES THIS AFTERNOON WILL BE AROUND 110 DEGREES.
THIS WILL PRODUCE DANGEROUS CONDITIONS FOR ANYONE WHO NEEDS TO BE
OUTDOORS FOR ANY LENGTH OF TIME.

A COLD FRONT IS EXPECTED TO APPROACH THE AREA LATE THIS AFTERNOON
AND EARLY THIS EVENING...INCREASING OUR CHANCES FOR THUNDERSTORMS
WITH THE BEST CHANCE FOR ORGANIZED THUNDERSTORM ACTIVITY TONIGHT.
A FEW OF THE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING STRAIGHT
LINE WINDS...TORRENTIAL RAINFALL AND FREQUENT LIGHTNING. THE THREAT
SHOULD BEGIN TO DIMINISH AROUND MIDNIGHT.

THE LITTLE WABASH RIVER AT CLAY CITY WILL REMAIN IN FLOOD FOR
THE NEXT SEVERAL DAYS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE COLD FRONT WILL BECOME STATIONARY ACROSS SOUTHEAST ILLINOIS ON
SUNDAY. AS A RESULT...THERE WILL BE A CHANCE FOR THUNDERSTORMS
DURING THE DAY. NO SEVERE WEATHER IS ANTICIPATED.

THE THREAT FOR ISOLATED THUNDERSTORMS WILL REMAIN OVER THE
AREA THROUGH MOST OF NEXT WEEK...PRIMARILY DURING THE AFTERNOON
AND EARLY EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON OR THIS
EVENING...ROUGHLY FROM 400 PM THROUGH MIDNIGHT.

ILZ027>031-036-037-251100-
FULTON-KNOX-MARSHALL-PEORIA-STARK-TAZEWELL-WOODFORD-
1108 AM CDT SAT JUL 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS MORNING...AND AGAIN
LATER THIS AFTERNOON. A FEW OF THE STORMS THIS AFTERNOON COULD
PRODUCE GUSTY WINDS AND TORRENTIAL RAINFALL...ESPECIALLY WEST OF
THE ILLINOIS RIVER. THE PRIMARY THREAT WITH THE STORMS THIS
AFTERNOON WILL BE FROM DAMAGING STRAIGHT LINE WINDS...ALONG WITH
TORRENTIAL RAINFALL AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE THREAT FOR ISOLATED THUNDERSTORMS WILL RETURN ON TUESDAY...
PRIMARILY DURING THE AFTERNOON AND EARLY EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO THIS
EVENING...ROUGHLY FROM 200 PM UNTIL 900 PM CDT.

DPK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 2:51 AM CDTExcessive Heat WarningILXCass, Champaign, Christian, Clark, Clay, Coles and 19 more16 hr
Jul 24, 2:51 AM CDTHeat AdvisoryILXDeWitt, Fulton, Knox, Logan, McLean, Marshall and 7 more15 hr
Jul 24, 2:18 PM CDTSevere Thunderstorm WarningILXSchuyler27 min
Jul 24, 2:31 PM CDTSevere Thunderstorm WarningILXCass, Fulton, Mason44 min
Jul 24, 3:15 PM CDTSevere Thunderstorm WarningILXCass, Logan, Mason, Menard60 min
Jul 24, 3:21 PM CDTSevere Thunderstorm WarningILXCass, Mason, Schuyler26 min
Jul 24, 4:15 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, Macon49 min
Jul 24, 5:00 PM CDTSpecial Weather StatementILXChampaign, Douglas, Piatt60 min
Jul 24, 5:13 PM CDTSpecial Weather StatementILXMoultrie, Shelby62 min
Jul 24, 6:01 PM CDTSpecial Weather StatementILXCass, Schuyler59 min
Jul 24, 6:30 PM CDTAreal Flood AdvisoryILXChristian, Shelby4 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2010Every severe thunderstorm warning in 2010

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.