Alert archive / Illinois / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 11, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jan 21, 1999, 2:54 PM CST for Washington County, Illinois. It was in force for 46 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 21, 1999, 2:54 PM CST (20:54 UTC)
- Expired
- Jan 21, 1999, 3:40 PM CST
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Washington County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 3:15 PM CST | Hail 0.75 | Ashley, 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.9 hours before the alert went out and 212 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1230 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KSTL 212053 RRA SVRSTL ILC189-212140- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 254 PM CST THU JAN 21 1999 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN WASHINGTON COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 340 PM CST * AT 251 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NORTH CENTRAL PERRY COUNTY ILLINOIS... MOVING NORTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... RADOM AT 305 PM CST ASHLEY AT 315 PM CST THE PRIMARY THREAT WILL BE LARGE HAIL. STAY INSIDE AND AWAY FROM WINDOWS. RP/DB
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.
In the hours before
Special weather statement, Jan 21, 10:16 AM CST, 4 hours 38 minutes before
MOZ063-211635- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1016 AM CST THU JAN 21 1999 ...TEST....TEST....TEST....
Special weather statement, Jan 21, 10:17 AM CST, 4 hours 37 minutes before
MOZ062-211635- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1017 AM CST THU JAN 21 1999 TEST...TEST....TEST...THIS IS A TEST// RP
Special weather statement, Jan 21, 10:25 AM CST, 4 hours 29 minutes before
MOZ062-211645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1025 AM CST THU JAN 21 1999 THIS IS A TEST.....THIS IS A TEST....THIS IS A TEST... THIS IS ONLY A TEST... RP
Local storm report, Jan 21, 2:17 PM CST, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
217 PM CST THU JAN 21 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1105 AM CLARKSBURG MO 1 INCH HAIL
01/21/99 MONITEAU REPORT FROM COUNTY SHERIFF
1143 AM 2 N COLUMBIA MO .88 INCH HAIL
01/21/99 BOONE REPORT FROM COLUMBIA EOC
1150 AM SILEX MO 1 INCH HAIL
01/21/99 LINCOLN SPOTTER REPORT: 3/4 TO 1
INCH HAIL COVERED GROUND
1155 AM HALLSVILLE MO .75 INCH HAIL
01/21/99 BOONE SPOTTER REPORT
1255 PM HALLSVILLE MO 1 INCH HAIL
01/21/99 BOONE EOC REPORTED 1 INCH HAIL
COVERING THE GROUND
1257 PM STURGEON MO 1.75 INCH HAIL
01/21/99 BOONE EOC REPORTED GOLFBALL HAIL
0100 PM 2 NE STURGEON MO 1.75 INCH HAIL
01/21/99 AUDRAIN SPOTTER REPORTLocal storm report, Jan 21, 2:17 PM CST, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
217 PM CST THU JAN 21 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1105 AM CLARKSBURG MO 1 INCH HAIL
01/21/99 MONITEAU REPORT FROM COUNTY SHERIFF
1143 AM 2 N COLUMBIA MO .88 INCH HAIL
01/21/99 BOONE REPORT FROM COLUMBIA EOC
1150 AM SILEX MO 1 INCH HAIL
01/21/99 LINCOLN SPOTTER REPORT: 3/4 TO 1
INCH HAIL COVERED GROUND
1155 AM HALLSVILLE MO .75 INCH HAIL
01/21/99 BOONE SPOTTER REPORT
1255 PM HALLSVILLE MO 1 INCH HAIL
01/21/99 BOONE EOC REPORTED 1 INCH HAIL
COVERING THE GROUND
1257 PM STURGEON MO 1.75 INCH HAIL
01/21/99 BOONE EOC REPORTED GOLFBALL HAIL
0100 PM 2 NE STURGEON MO 1.75 INCH HAIL
01/21/99 AUDRAIN SPOTTER REPORTSpecial weather statement, Jan 21, 2:25 PM CST, 29 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-221200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 225 PM CST THU JAN 21 1999 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST. LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...SOUTH OF A LINE FROM KIRKSVILLE TO QUINCY. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECASTS...AND MONITOR LATER WEATHER INFORMATION FOR POSSIBLE SKYWARN ACTION. GKS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 3:15 PM CST | Severe Thunderstorm Warning | LSX | Marion | 50 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1999Every severe thunderstorm warning in 1999
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.