Alert archive / Illinois / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 147, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 1, 1993, 8:38 PM CDT for Perry County, Illinois. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- Aug 1, 1993, 8:38 PM CDT (01:38 UTC)
- Expired
- Aug 1, 1993, 9:22 PM CDT
- In force
- 44 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Perry County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.6 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.
- Mixed-layer CAPE
- 1804 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1246 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 020141 SVRSTL ILC145-020230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 838 PM CDT SUN AUG 1 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ILLINOIS ...SOUTHERN PERRY COUNTY ...AT 835 PM CDT...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTH PERRY COUNTY 5 MILES SOUTHEAST OF PERRYVILLE...OR 30 MILES NORTHWEST OF CAPE GIRARDEAU. THE STORM WAS MOVING SOUTHEAST AT 20 MILES AN HOUR. THE STORM WILL MOVE THROUGH UNIONTOWN BY 900 PM...AND NEAR ALTENBURG BY 915 PM. THIS STORM WILL PRODUCE DAMAGING WINDS AND HAIL AND VERY HEAVY RAIN. 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 HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. JPK
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, Aug 1, 8:27 PM CDT, 11 minutes before
MOZ018-ILZ013-020230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 827 PM CDT SUN AUG 1 1993 ...STRONG THUNDERSTORMS WERE FORMING OVER SOUTHWEST ILLINOIS AND SOUTHEAST MISSOURI... AT 820 CDT...NWS DOPPLER RADAR INDICATED A BROKEN LINE OF THUNDERSTORMS EXTENDING FROM SOUTHWEST ILLINOIS INTO SOUTHEAST MISSOURI. THE STORMS WERE MOVING SOUTHEAST AT 15 TO 20 MILES AN HOUR. A VERY STRONG STORM HAD FORMED RAPIDLY OVER SOUTH PERRY COUNTY. THE STORM WAS 4 MILES SOUTH OF PERRYVILLE AND WILL MOVE THROUGH THE TOWNS OF BIEHL...APPLE CREEK AND LONGTOWN BY 845 PM. THIS STORM WILL LIKELY PRODUCE SMALL HAIL...GUSTY WINDS AND VERY HEAVY RAIN. OTHER VERY STRONG STORMS WERE IN SOUTHWEST ILLINOIS OVER CLINTON COUNTY...JUST SOUTHEAST OF CARLYLE...OVER WASHINGTON COUNTY NEAR NASHVILLE... AND OVER PERRY COUNTY...ABOUT 3 MILES NORTH OF PINCKNEYVILLE. RESIDENTS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF STRONG STORMS APPROACH. JPK
Special weather statement, Aug 1, 8:29 PM CDT, 9 minutes before
MOZ018-ILZ013-020230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 827 PM CDT SUN AUG 1 1993 ...STRONG THUNDERSTORMS WERE FORMING OVER SOUTHWEST ILLINOIS AND SOUTHEAST MISSOURI... AT 820 CDT...NWS DOPPLER RADAR INDICATED A BROKEN LINE OF THUNDERSTORMS EXTENDING FROM SOUTHWEST ILLINOIS INTO SOUTHEAST MISSOURI. THE STORMS WERE MOVING SOUTHEAST AT 15 TO 20 MILES AN HOUR. A VERY STRONG STORM HAD FORMED RAPIDLY OVER SOUTH PERRY COUNTY. THE STORM WAS 4 MILES SOUTH OF PERRYVILLE AND WILL MOVE THROUGH THE TOWNS OF BIEHL...APPLE CREEK AND LONGTOWN BY 845 PM. THIS STORM WILL LIKELY PRODUCE SMALL HAIL...GUSTY WINDS AND VERY HEAVY RAIN. OTHER VERY STRONG STORMS WERE IN SOUTHWEST ILLINOIS OVER CLINTON COUNTY...JUST SOUTHEAST OF CARLYLE...OVER WASHINGTON COUNTY NEAR NASHVILLE... AND OVER PERRY COUNTY...ABOUT 3 MILES NORTH OF PINCKNEYVILLE. RESIDENTS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF STRONG STORMS APPROACH. JPK
Special weather statement, Aug 1, 8:32 PM CDT, 6 minutes before
MOZ018-ILZ013-020230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 827 PM CDT SUN AUG 1 1993 ...STRONG THUNDERSTORMS WERE FORMING OVER SOUTHWEST ILLINOIS AND SOUTHEAST MISSOURI... AT 820 CDT...NWS DOPPLER RADAR INDICATED A BROKEN LINE OF THUNDERSTORMS EXTENDING FROM SOUTHWEST ILLINOIS INTO SOUTHEAST MISSOURI. THE STORMS WERE MOVING SOUTHEAST AT 15 TO 20 MILES AN HOUR. A VERY STRONG STORM HAD FORMED RAPIDLY OVER SOUTH PERRY COUNTY. THE STORM WAS 4 MILES SOUTH OF PERRYVILLE AND WILL MOVE THROUGH THE TOWNS OF BIEHL...APPLE CREEK AND LONGTOWN BY 845 PM. THIS STORM WILL LIKELY PRODUCE SMALL HAIL...GUSTY WINDS AND VERY HEAVY RAIN. OTHER VERY STRONG STORMS WERE IN SOUTHWEST ILLINOIS OVER CLINTON COUNTY...JUST SOUTHEAST OF CARLYLE...OVER WASHINGTON COUNTY NEAR NASHVILLE... AND OVER PERRY COUNTY...ABOUT 3 MILES NORTH OF PINCKNEYVILLE. RESIDENTS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF STRONG STORMS APPROACH. JPK
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 9:36 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 39 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1993Every severe thunderstorm warning in 1993
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.