Alert archive / Illinois / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 8, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1992, 2:22 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 53 min. 2 reports 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
- Apr 15, 1992, 2:22 PM CDT (19:22 UTC)
- Expired
- Apr 15, 1992, 3:15 PM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Saint Clair County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 15, 2:25 PM CDT | Hail 0.75 | Monroe, IL | |
| Apr 15, 2:45 PM CDT | Hail 0.75 | St. Clair, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 7.4 hours before the alert went out and 188 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
- 564 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1576 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 151923 SVRSTL ILC133-163-152015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 222 PM CDT WED APR 15 1992 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...NORTHWESTERN MONROE COUNTY...WESTERN ST CLAIR COUNTY AT 217 CDT...RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE MISSISSIPPI RIVER...ABOUT 20 MILES SOUTH OF DOWNTOWN ST. LOUIS. THE STORM HAS PRODUCED QUARTER SIZE HAIL AT IMPERIAL MISSOURI. THE SEVERE THUNDERSTORM WAS MOVING TO THE NORTHEAST AT 25 MILES AN HOUR AND WILL BE EFFECTING THE TOWNS OF COLUMBIA..EAST ST. LOUIS AND BELLEVILLE. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR H[OME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. RP/ST
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, Apr 15, 12:23 PM CDT, 1 hour 59 minutes before
MOZ010-014-141800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1220 PM CDT WED APR 15 1992 ...STRONG THUNDERSTORMS DEVELOP RAPIDLY IN SOUTH CENTRAL MISSOURI... WIDELY SCATTERED BUT STRONG THUNDERSTORMS DEVELOPED RAPIDLY IN SOUTH CENTRAL MISSOURI SINCE 1130AM. BY 1215PM...THE THUNDERSTORMS WERE OVER THE EAST PARTS OF THE LAKE OF THE OZARKS TO AROUND WAYNESVILLE AND AND ROLLA...OR IN AN AREA FROM 30 MILES SOUTHWEST OF JEFFERSON CITY TO ROLLA. LITTLE OR NO MOVEMENT WAS DETECTED ON THE STORMS BUT THEY SHOULD MOVE QUICKLY TO THE EAST. BRIEF HEAVY RAIN AND POSSIBLY SOME SMALL HAIL MAY BE EXPECTED FROM THE THUNDERSTORMS. GUSTY WIND AND DANGEROUS LIGHTNING ARE ALSO IMMINENT. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE DEVELOPING OVER OTHER PARTS OF CENTRAL MISSOURI THROUGHOUT THE REST OF THE AFTERNOON. LARM
Special weather statement, Apr 15, 12:35 PM CDT, 1 hour 47 minutes before
MOZ011-012-017-151830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1230 PM CDT WED APR 15 1992 ...ISOLATED STRONG THUNDERSTORMS DEVELOPING OVER EASTERN MISSOURI AND SOUTHWEST ILLINOIS... BETWEEN 11 AM AND 12 NOON...THUNDERSTORMS FORMED RAPIDLY IN AN AREA FROM THE LAKE OF THE OZARKS TO THE ST LOUIS AREA. AT 1230 PM...RADAR INDICATED TWO STRONG STORMS IN EAST CENTRAL MISSOURI. THE FIRST STORM WAS 30 MILES SOUTH OF ST LOUIS IN SOUTHERN JEFFERSON COUNTY...WHILE THE SECOND STORM WAS ABOUT 50 MILES WEST OF ST LOUIS... IN WARREN COUNTY. BOTH THESE STORMS WERE PRODUCING VERY HEAVY RAINS... AND POSSIBLY SOME SMALL HAIL...AS THEY MOVED NORTHEAST AT 25 MILES AN HOUR. DUE TO THE WARM AND UNSTABLE AIR THAT BLANKETS EASTERN MISSOURI AND SOUTHWEST ILLINOIS...SCATTERED THUNDERSTORM DEVELOPMENT WILL CONTINUE THROUGHOUT THE REMAINDER OF THE AFTERNOON. ANY OF THESE STORMS WILL BE CAPABLE OF PRODUCING BRIEF HEAVY RAINS...AND POSSIBLY SOME SMALL HAIL. TRUETT
Special weather statement, Apr 15, 1:27 PM CDT, 55 minutes before
MOZ011-012-017-018-ILZ011-151935- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 125 PM CDT WED APR 15 1992 ...STRONG THUNDERSTORMS CONTINUE OVER EASTERN MISSOURI AND SOUTHWEST ILLINOIS... AT 125 PM...SCATTERED THUNDERSTORMS CONTINUED FROM THE LAKE OF THE OZARKS TO JUST EAST OF THE ST LOUIS AREA. THE STRONGEST STORM WAS LOCATED 25 MILES SOUTH OF ST LOUIS...IN MONROE COUNTY ILLINOIS. THE STORM WAS MOVING NORTHEAST AT 25 MILES AN HOUR...AND WILL BE PASSING OVER THE CITIES OF WATERLOO AND BELLEVILLE BETWEEN 125 AND 230 PM THIS AFTERNOON. IF THE STORM MAINTAINS ITS CURRENT STRENGTH...BRIEF HEAVY RAINS AND SMALL HAIL CAN BE EXPECTED WITH ITS PASSAGE. THE WARM AND HUMID CONDITIONS OVER EASTERN MISSOURI AND SOUTHWEST ILLINOIS WILL CONTINUE TO PRODUCE SCATTERED THUNDERSTORMS THROUGHOUT THE REMAINDER OF THE AFTERNOON. ANY OF THESE STORMS WILL BE CAPABLE OF PRODUCING SOME HAIL...AS WELL AS BRIEF BUT VERY HEAVY RAINS.\ TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 3:14 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 46 min |
| Apr 15, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 47 min |
| Apr 15, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 45 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1992Every severe thunderstorm warning in 1992
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.