Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 40, NWS Lincoln, IL

April 24, 2002Clark County, Crawford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 24, 2002, 4:05 PM CDT for Clark County, Crawford County, Illinois. It was in force for 40 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 24, 2002, 4:05 PM CDT (21:05 UTC)
Expired: Apr 24, 2002, 4:45 PM CDT
In force: 40 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Clark County, IL, Crawford County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 24, 4:20 PM CDT	Thunderstorm Wind 50 E	Oblong, IL	The aluminum facade of a business in Oblong was loosened by the thunderstorm winds.
Apr 24, 4:25 PM CDT	Hail 0.75	Hardinville, IL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 24, 2:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 127 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 242105
SVRSPI
ILC023-033-242145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
403 PM CDT WED APR 24 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLARK COUNTY IN EAST CENTRAL ILLINOIS
  CRAWFORD COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 445 PM CDT

* AT 403 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS FROM FROM 2 MILES NORTHWEST OF 
  TOLEDO TO 9 MILES SOUTHEAST OF NEWTON...MOVING EAST AT 45 MPH. 
  AT 400 PM...GOLFBALL SIZE HAIL WAS REPORTED IN NEWTON IN JASPER 
  COUNTY.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  HARDINVILLE
  ANNAPOLIS
  OBLONG
  EATON
  NEW HEBRON
  ROBINSON
  MARTINSVILLE
  FLAT ROCK

LARGE HAIL IN EXCESS OF 2 INCHES WILL ACCOMPANY THIS DANGEROUS STORM.
MOVE INDOORS AND STAY AWAY FROM WINDOWS. ABANDON CARS AND MOBILE
HOMES IF YOU ARE IN THE WARNED AREA.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 3948 8799 3909 8795 3887 8794 3888 8759
          3904 8760 3926 8764 3946 8755

&
KETCHAM 
NNNN

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 Apr 24, 2:15 PM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Apr 24, 2:15 PM CDT, 1 hour 50 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
215 PM CDT WED APR 24 2002

MODELS IN FAIRLY GOOD AGREEMENT EXCEPT NOT HANDLING SFC LOW AT
TRIPLE POINT WELL. MODELS MOVING LOW EAST AND THEN SE THIS EVENING.
HOWEVER...LOW ACTUALLY MOVING NE AT THIS TIME INTO WCNTRL IL.
OTHERWISE MODELS SLOWLY WITH FRONT THAN PREVIOUS AND THIS LOOKS TO
BE RIGHT ON TARGET. THEREFORE WILL CONTINUE CRNT TREND OF FCST.

COLD FRONT JUST PAST MISS RVR WITH SFC LOW SW OF UIN AND WARM FRONT
EXTENDING INTO PARTS OF CNTRL AND SRN IL. AS THIS MOVES EAST THE
REMAINDER OF THIS AFTERNOON AND INTO THIS EVENING...THUNDERSTORMS
ARE VERY LIKELY ACRS AREA...WITH SOME SEVERE. WILL KEEP CRNT
WORDING OF POSSIBLE SEVERE IN EAST AND SOUTHEAST FOR TONIGHT.

AFTER SYSTEM PASSES...DRIER AIR MOVES INTO CWA BRINGING IN CLEAR
SKIES AND LIGHTER WINDS. HI PRSS RDG MOVES INTO PLAINS BUT REMAINS
WEST OF AREA. STATE WILL STILL HAVE BREEZY NWLY WINDS FROM NW...BUT
LESS CLOUDS THAN TODAY. RIDGE WILL MOVE OVER AREA THUR NIGHT...SO
AREA WILL EXPERIENCE LIGHT WINDS AND CONTINUED CLEAR SKIES.

ON FRIDAY...RIDGE WILL MOVE EAST OF AREA BRINGING RETURN OF SLY
WINDS AND WARMER TEMPS...AFTER TWO NIGHTS OF TEMPS JUST ABOVE
FREEZING. CLOUDS WILL ALSO BE ON INCREASE DURING AFTERNOON ACROSS
AREA WITH INCREASING WAA AND IN ADVANCE OF NEXT SYSTEM...THAT WILL
BEGIN TO EFFECT CWA SATURDAY. WILL HAVE TO ADD POPS FOR FRIDAY
NIGHT AS SOME WAA PCPN APPEARS TO BE MOVING INTO CWA FOR THAT TIME
PERIOD. MAIN PCPN WILL HOLD OFF TIL DURING DAY ON SAT AND INTO SAT
NIGHT. THEREFORE WILL ADD SAT EVE TO INDICATE CONTINUED PCPN INTO
EVENING HOURS.

EXTENDED: CURRENT EXTENDED LOOKS ON TRACK AND WILL HAVE CHC OF
RW/TRW FROM MON THROUGH WED. SFC FRONT SETS UP SOUTH OF CWA AND
GIVES CWA CONTINUED CHC OF OVERRUNNING PCPN THROUGH THAT TIME
PERIOD. SUNDAY WILL KEEP DRY AT THIS TIME.

...PRELIMINARY CCF FOR COORDINATION PURPOSES...

SPI B 035/058 035/059 046 77400
PIA B 034/056 034/058 045 77400
DEC B 035/057 034/059 046 77400
CMI B 036/057 034/058 045 77+00
MTO B 037/058 035/060 047 77+00
LWV B 038/059 038/061 048 77+00

.ILX...NONE.

AUTEN

In the hours before

Special weather statement, Apr 24, 11:00 AM CDT, 5 hours 5 minutes before

ILZ027>031-036>038-040>057-061>063-066>068-071>073-241800-

HAZARDOUS WEATHER OUTLOOK FOR CENTRAL ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
1100 AM CDT WED APR 24 2002

...THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON
AND THIS EVENING ACROSS CENTRAL AND SOUTHEAST ILLINOIS...

SEVERE THUNDERSTORMS ARE POSSIBLE ALONG A COLD FRONT THAT WILL BE
MOVING THROUGH CENTRAL ILLINOIS LATER THIS AFTERNOON INTO THIS
EVENING. THE PRIMARY SEVERE WEATHER THREAT WILL BE LARGE HAIL AND
DAMAGING WINDS BETWEEN 2PM AND 7PM.

REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. MONITOR NOAA
WEATHER RADIO...OR COMMERCIAL RADIO OR TELEVISION FOR THE LATEST
WEATHER FORECASTS.

Local storm report, Apr 24, 1:33 PM CDT, 2 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
133 PM CDT WED APR 24 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0126 PM    GLASGOW                   IL   .88 INCH HAIL
04/24/02   SCOTT                          FROM COUNTY SHERIFF.

Local storm report, Apr 24, 3:38 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
338 PM CDT WED APR 24 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0335 PM    BEECHER CITY              IL   .75 INCH HAIL
04/24/02   EFFINGHAM                      REPORTED BY STATE POLICE.

GEELHART

Special weather statement, Apr 24, 3:55 PM CDT, 10 minutes before

ILZ029>031-037-041-047-242115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
355 PM CDT WED APR 24 2002

...TORNADO WATCH HAS BEEN CANCELED FOR PORTIONS OF CENTRAL
ILLINOIS...

THE TORNADO WATCH THAT WAS IN EFFECT UNTIL 8 PM HAS BEEN CANCELED
FOR THE FOLLOWING COUNTIES...CASS...MASON...PEORIA...TAZEWELL...
MARSHALL...WOODFORD. THE THREAT FOR SEVERE WEATHER HAS MOVED EAST OF
THESE AREAS.

Local storm report, Apr 24, 4:03 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
403 PM CDT WED APR 24 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0354 PM    1 S LOUISVILLE            IL   1.75 INCH HAIL
04/24/02   CLAY                           REPORTED BY ESDA.

0357 PM    DIETERICH                 IL   .75 INCH HAIL
04/24/02   EFFINGHAM                      REPORTED BY STATE POLICE.

0400 PM    1 W NEWTON                IL   1.75 INCH HAIL
04/24/02   JASPER                         REPORTED BY COOP OBSERVER.

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 12:56 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	64 min
Apr 24, 1:26 PM CDT	Severe Thunderstorm Warning	ILX	Schuyler	64 min
Apr 24, 2:13 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	47 min
Apr 24, 2:19 PM CDT	Severe Thunderstorm Warning	ILX	Cass	41 min
Apr 24, 2:51 PM CDT	Severe Thunderstorm Warning	ILX	Menard	39 min
Apr 24, 2:55 PM CDT	Severe Thunderstorm Warning	ILX	Mason	50 min
Apr 24, 3:13 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Tazewell	62 min
Apr 24, 3:14 PM CDT	Severe Thunderstorm Warning	ILX	Effingham	61 min
Apr 24, 3:32 PM CDT	Severe Thunderstorm Warning	ILX	Clay	43 min
Apr 24, 3:44 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland, Jasper	46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.