Alert archive / Illinois / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 91, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 20, 1992, 4:22 PM CDT for Washington County, Illinois. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1992, 4:22 PM CDT (21:22 UTC)
- Expired
- Jul 20, 1992, 5:15 PM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Washington County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.4 hours before the alert went out and 156 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
- 794 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1190 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 8 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 202120 SVRSTL ILC189-202215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 422 PM CDT MON JUL 20 1992 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM CDT ... IN SOUTH CENTRAL ILLINOIS ...NORTHERN WASHINGTON COUNTY ...AT 415 PM...NWS DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM 30 MILES SOUTHEAST OF ST LOUIS...ABOUT 5 MILES WEST OF OKAVILLE. THIS STORM WAS MOVING EAST AT 20 MPH. THE STORM WILL PASS NEAR NASHVILLE...ILLINOIS BY 440 PM. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. TUCKER
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, Jul 20, 11:40 AM CDT, 4 hours 42 minutes before
ILZ012-013-201745- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1140 AM CDT MON JUL 20 1992 ...A STRONG THUNDERSTORM WAS MOVING EAST OVER EASTERN FAYETTE COUNTY ILLINOIS... AT 1132 AM...NWS DOPPLER RADAR SHOWED A STRONG THUNDERSTORM 5 MILES EAST OF VANDALIA...NEAR BROWNSTOWN AND PRUETT. STORM MOVEMENT WAS EAST AT 25 TO 30 MPH. THIS STORM WILL MOVE INTO THE ST. ELMO AND ALTAMONT AREAS BY 1200 NOON ...AND TO NEAR EFFINGHA<M BY 1230 PM. IF THIS STORM MOVES INTO YOUR AREA...MOVE TO SHELTER IMMEDIATELY. SMALL HAIL...GUSTY WINDS TO 35 TO 40 MPH...HEAVY RAIN...AND DEADLY LIGHTNING WILL BE POSSIBLE WITH THIS STRONG. GOETSCH
Special weather statement, Jul 20, 12:22 PM CDT, 4 hours before
MOZ012-201830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1221 PM CDT MON JUL 20 1992 ...A STRONG STORM WAS MOVING INTO EXTREME SOUTHWEST COUNTY... AT 1215 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A STRONG THUNDERSTORM JUST WEST OF PACIFIC MISSOURI. THE STORM WAS MOVING EAST AT 30 MILES AN HOUR. IT SHOULD MOVE INTO THE EUREKA AND SIX FLAGS AREA BY 1245 PM. VERY HEAVY RAIN...STRONG WINDS...AND DANGEROUS LIGHTbNING CAN BE EXPECTED WITH THE PASSAGE OF THIS STORM. PEOPLE IN THE PATH OF THE STORM SHOULD SEEK SHELTER IF THREATENING WEATHER APPROACHES. SMALL
Special weather statement, Jul 20, 12:24 PM CDT, 3 hours 58 minutes before
MOZ012-201830- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE ST LOUIS MO 1221 PM CDT MON JUL 20 1992 ...A STRONG STORM WAS MOVING INTO EXTREME SOUTHWEST ST LOUIS COUNTY... AT 1215 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A STRONG THUNDERSTORM JUST WEST OF PACIFIC MISSOURI. THE STORM WAS MOVING EAST AT 30 MILES AN HOUR. IT SHOULD MOVE INTO THE EUREKA AND SIX FLAGS AREA BY 1245 PM. VERY HEAVY RAIN...STRONG WINDSf...AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH THE PASSAGE OF THIS STORM. PEOPLE IN THE PATH OF THE STORM SHOULD SEEK SHELTER IF THREATENING WEATHER APPROACHES. SMALL
Special weather statement, Jul 20, 2:26 PM CDT, 1 hour 56 minutes before
MOZ013-014-202015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 215 PM CDT MON JUL 20 1992 ...THUNDERSTORMS WITH VERY HEAVY RAIN SPREADING INTO CENTRAL MISSOURI... AT 215PM...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE MOVING INTO SOUTH PARTS OF CENTRAL MISSOURI. THE HEAVIEST RAIN WAS AROUND ROLLA AND OVER BRANCHES OF THE LAKE OF THE OZARKS...NEAR LAURIE...35 MILES SOUTH- WEST OF JEFFERSON CITY. OTHER THUNDERSTORMS WITH VERY HEAVY RAIN WERE AROUND HERMITAGE AND POMME DE TERRE LAKE..OR ABOUT 40 MILES NORTH OF SPRINGFIELD. THE THUNDERSTORMS WERE MOVING NORTHEAST AT ONLY 10 MPH. BOATERS OR SWIMMERS ON THE LAKES SHOULD PUT ASHORE IMMEDIATELY UNTIL THE STORMS HAVE PASSED. ANY OTHER OUTSIDE ACTIVITIES SHOULD BE DELAYED UNTIL THE WEATHER CLEARS. THESE STORMS WILL LIKELY PRODUCE GUSTY WINDS TO 35 OR 40 MPH...DANGEROUS LIGHTNING AND VERY HEAVY RAIN. LARM
Special weather statement, Jul 20, 3:16 PM CDT, 1 hour 6 minutes before
MOZ011-012-202115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 317 PM CDT MON JUL 20 1992 ...A LINE OF STRONG THUNDERSTORMS WAS FORMING OVER THE ST. LOUIS AREA... AT 310 PM CST...WEATHER SERVICE DOPPLER RADAR SHOWED A LING OF STRONG THUNDERSTORMS EXTENDING FROM NEAR COLLINSVILLE ILLINOIS...THROUGH THE DOWNTOWN AREA...SOUTHWEST TO NEAR PACIFIC MISSOURI AND INTO NORTH FRANKLIN COUNTY. THE ST. CLAIR COUNTY SHERIFF REPORTED VERY HEAVY RAIN AND 1/2 INCH HAIL AT THE INTERSECTION OF INTERSTATE 255 AND 64...ABOUT 13 MILES EAST OF ST. LOUIS AT 305 PM. ANOTHER STORM PRODUCED 1/4 INCH HAIL IN BALLWIN AT 240 PM. THE STORMS WERE MOVING EAST AT 20 TO 25 MILES AN HOUR.: FOR THE NEXT HOUR...ST. CLAIR COUNTY ILLINOIS...THE CITY OF ST. LOUIS... SOUTHERN ST. LOUIS COUNTY...NORTH JEFFERSON COUNTY AND NORTH FRANKLIIN COUNTY CAN EXPECT VERY RAIN...GUSTY WINDS AND SMALL HAIL. JPK/EG
Special weather statement, Jul 20, 3:41 PM CDT, 41 minutes before
MOZ011-012-202145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 342 PM CDT MON JUL 20 1992 ...STRONG THUNDERSTORMS HAD DEVELOPED OVER CENTRAL FRANKLIN COUNTY MISSOURI... AT 330 PM...NWS DOPPLER RADAR SHOWED STRONG THUNDERSTORMS IN THE ST. CLAIR AREA IN CENTRAL FRANKLIN COUNTY...50 MILES SOUTHWEST OF ST. LOUIS. THESE STORMS WERE MOVING EAST AT 20 MPH...AND WILL REACH THE GRUBVILLE AREA BY 345 PM. IF THESE STORMS MOVE INRTO YOUR AREA...MOVE TO SHELTER IMMEDIATELY. SMALL HAIL...GUSTY WINDS FROM 30 TO 40 MPH...DEADLY LIGHTNING...AND HEAVY RAIN REMAIN POSSIBLE WITH THESE STORMS. GOETSCH
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 1:42 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 63 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; the sounding from the Mesonet's radiosonde archive.