Alert archive / Illinois / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 175, NWS Lincoln, IL

October 24, 2010Logan County, Menard County, Sangamon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Oct 24, 2010, 7:55 PM CDT for Logan County, Menard County, Sangamon County, Illinois. It was in force for 50 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
Oct 24, 2010, 7:55 PM CDT (00:55 UTC)
Expired
Oct 24, 2010, 8:45 PM CDT
In force
50 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Logan County, IL, Menard County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 31 km from the middle of the area, began a volume at 00:55 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 00:00Z, 0.9 hours before the alert went out and 88 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, Lincoln, IL at 00:00Z on 2010-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 746 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, Lincoln, IL at 00:00Z on 2010-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.19395878Sfc1 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
746 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.8

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 Oct 24, 6:13 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, Oct 24, 6:13 PM CDT, 1 hour 42 minutes before
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Hazardous weather outlook, Oct 24, 3:37 PM CDT, 4 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
337 PM CDT SUN OCT 24 2010

ILZ027>030-036-040-251100-
FULTON-KNOX-MARSHALL-PEORIA-SCHUYLER-STARK-
337 PM CDT SUN OCT 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS WILL DEVELOP THIS EVENING IN ADVANCE OF
AN UPPER LEVEL DISTURBANCE APPROACHING FROM THE SOUTHWEST. DESPITE
GOOD UPPER DYNAMICS IN PLACE...THE ATMOSPHERE WILL REMAIN TOO
STABLE TO SUPPORT WIDESPREAD SEVERE WEATHER. A FEW OF THE STORMS
COULD PRODUCE GUSTY WINDS AND SMALL HAIL BEFORE DIMINISHING BY MID
TO LATE EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A STRONG COLD FRONT WILL APPROACH FROM THE WEST MONDAY NIGHT INTO
TUESDAY MORNING...BRINGING ANOTHER ROUND OF THUNDERSTORMS TO THE
AREA. SOME OF THE STORMS COULD BECOME SEVERE...WITH DAMAGING WINDS
BEING THE PRIMARY THREAT.

ONCE THE FRONT CLEARS THE AREA...VERY WINDY CONDITIONS WILL
DEVELOP ON TUESDAY. SUSTAINED WINDS IN THE 25 TO 35 MPH RANGE WILL
BE COMMON...WITH GUSTS IN EXCESS OF 40 MPH AT TIMES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

ILZ031-037-038-041>057-061>063-066>068-071>073-251100-
CASS-CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-
DE WITT-DOUGLAS-EDGAR-EFFINGHAM-JASPER-LAWRENCE-LOGAN-MACON-MASON-
MCLEAN-MENARD-MORGAN-MOULTRIE-PIATT-RICHLAND-SANGAMON-SCOTT-
SHELBY-TAZEWELL-VERMILION-WOODFORD-
337 PM CDT SUN OCT 24 2010

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

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS WILL DEVELOP THIS EVENING IN ADVANCE OF
AN UPPER LEVEL DISTURBANCE APPROACHING FROM THE SOUTHWEST. A FEW
OF THE STORMS COULD BECOME SEVERE...WITH DAMAGING WINDS AND HAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A STRONG COLD FRONT WILL APPROACH FROM THE WEST MONDAY NIGHT INTO
TUESDAY...BRINGING ANOTHER ROUND OF THUNDERSTORMS TO THE AREA.
STRONG THUNDERSTORMS WILL BE POSSIBLE...WITH DAMAGING WINDS BEING
THE PRIMARY THREAT.

ONCE THE FRONT CLEARS THE AREA...VERY WINDY CONDITIONS WILL
DEVELOP ON TUESDAY. SUSTAINED WINDS IN THE 25 TO 35 MPH RANGE WILL
BE COMMON...WITH GUSTS IN EXCESS OF 40 MPH AT TIMES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH 10 PM.

BARNES

In the hours before

Special weather statement, Oct 24, 3:03 PM CDT, 4 hours 52 minutes before
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Local storm report, Oct 24, 6:43 PM CDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
643 PM CDT SUN OCT 24 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     HAIL             EAST PEORIA             40.67N 89.55W
10/24/2010  M0.25 INCH       TAZEWELL           IL   BROADCAST MEDIA

            PEA SIZE HAIL REPORTED AT THE STUDIOS OF WEEK/WHOI IN
            EAST PEORIA.

&&

SMITH
Special weather statement, Oct 24, 7:41 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
741 PM CDT SUN OCT 24 2010

ILZ048-051-250130-
MENARD-SANGAMON-
741 PM CDT SUN OCT 24 2010

...SIGNIFICANT WEATHER ALERT FOR EASTERN MENARD AND NORTHWESTERN
SANGAMON COUNTIES UNTIL 830 PM CDT...

AT 737 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF NEW BERLIN...OR 14 MILES
EAST OF JACKSONVILLE...MOVING NORTHEAST AT 35 MPH.

PENNY SIZE HAIL IS EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  PLEASANT PLAINS...
  ATHENS...
  SHERMAN...

OTHER LOCATIONS AFFECTED INCLUDE...BERLIN...FARMINGDALE...
SALISBURY...CAPITAL AIRPORT...CANTRALL AND FANCY PRAIRIE.

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 4012 8973 3987 8949 3972 8998 3987 8999
TIME...MOT...LOC 0041Z 236DEG 29KT 3981 8995

BARNES

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 7:41 PM CDTSpecial Weather StatementILXMenard49 min
Oct 24, 8:49 PM CDTSpecial Weather StatementILXSangamon56 min
Oct 24, 9:01 PM CDTSevere Thunderstorm WarningILXChristian, Logan, Macon, Sangamon44 min
Oct 24, 9:38 PM CDTSevere Thunderstorm WarningILXChristian, DeWitt, Logan, Macon, Piatt, Sangamon52 min
Oct 24, 10:30 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, Macon, Piatt60 min
Oct 24, 11:05 PM CDTSevere Thunderstorm WarningILXChampaign40 min
Oct 24, 11:45 PM CDTAreal Flood AdvisoryILXChampaign, Piatt4 hr
Oct 25, 3:08 AM CDTWind AdvisoryILXCass, Champaign, Christian, Clark, Clay, Coles and 29 more40 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.