Alert archive / Illinois / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 90, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 20, 1992, 1:42 PM CDT for Monroe County, Randolph County, Illinois. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1992, 1:42 PM CDT (18:42 UTC)
- Expired
- Jul 20, 1992, 2:45 PM CDT
- In force
- 63 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Randolph County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 6.7 hours before the alert went out and 167 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 201843 SVRSTL ILC133-157-201945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 142 PM CDT MON JUL 20 1992 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 PM CDT S... IN SOUTHWEST ILLINOIS ...SOUTHERN MONROE COUNTY...NORTHERN RANDOLPH COUNTY AT 140 PM...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... 10 MILES SOUTHEAST OF FESTUS...ABOUT 35 MILES SOUTH OF ST LOUIS. THIS STORM WAS MOVING EAST AT 20 MPH. IT WILL PASS NORTH OF PRARIE DU ROCHE AND KIDD...ILLINIOS. 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, 11:03 AM CDT, 2 hours 39 minutes before
ILZ011-201700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1102 AM CDT MON JUL 20 1992 ...A STRONG THUNDERSTORM IS OVER BOND COUNTY...ILLINOIS... AT 1055 PM...NWS DOPPLER INDICATED A STRONG THUNDERTORM NEAR GREENVILLE...ILLINOIS OR ABOUT 70 MILES SOUTHWEST OF EFFINGHAM. THIS STORM WAS MOVING EAST AT 20 MPH. THE STORM WILL MOVE THROUGH EASTERN BOND AND INTO FAYETTE COUNTY BETWEEN 1115 AND 1145. IT WILL PASS NEAR VANDALIA. VERY HEAVY RAIN...GUSTY WIND AND POSSIBLY SMALL HAIL IS EXPECTED WITH THIS STORM. TUCKER
Special weather statement, Jul 20, 11:40 AM CDT, 2 hours 2 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, 1 hour 20 minutes 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, 1 hour 18 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
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 4:22 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 53 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.