Alert archive / Illinois / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 100, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 28, 1994, 5:41 PM CDT for Clinton County, Illinois. It was in force for 49 min.
The area
The counties it named.
The facts
- Issued
- Aug 28, 1994, 5:41 PM CDT (22:41 UTC)
- Expired
- Aug 28, 1994, 6:30 PM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Clinton County, IL
The radar
The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 22:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.7 hours before the alert went out and 182 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
- 1331 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 28, 4:34 PM CDT, 1 hour 7 minutes before
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</html>Special weather statement, Aug 28, 4:36 PM CDT, 1 hour 5 minutes before
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</html>Special weather statement, Aug 28, 4:52 PM CDT, 49 minutes before
MOZ065-063-064-ILZ058-100-102-101-290000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 452 PM CDT SUN AUG 28 1994 ...STRONG THUNDERSTORMS WERE MOVING THROUGH THE METRO AREA... AT 448 PM...RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN MOVING ACROSS NORTHERN ST LOUIS COUNTY...JUST ENTERING THE NORTHERN LIMITS OF THE CITY OF ST LOUIS. THIS STORM PRODUCED WIND GUSTS OF 40 MILES AN HOUR AT LAMBERT FIELD ALONG WITH LOWERED VISIBILITIES DUE TO THE HEAVY RAIN. OTHER SCATTERED THUNDERSTORMS EXTENDED FROM NEAR SPRINGFIELD ILLINOIS ACROSS ST LOUIS COUNTY TO NEAR THE ROLLA AREA. THE HEAVIEST RAIN FROM THESE STORMS WILL MOVE JUST NORTH AND JUST SOUTH OF ST LOUIS CITY BETWEEN 500 AND 530 PM. THE THREAT FOR STRONG THUNDERSTORM WILL THEN SHIFT TO COMMUNITIES EAST AND SOUTH OF ST LOUIS INTO THE EVENING HOURS. IF YOU ARE OUTDOORS WHEN STORMS APPROACH...SEEK SHELTER. LIGHTNING IS AN UNDERRATED KILLER SO STAY AWAY FROM TREES OR HIGH OBJECTS. LISTEN TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Aug 28, 4:54 PM CDT, 47 minutes before
MOZ065-063-064-ILZ058-100-102-101-290000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 452 PM CDT SUN AUG 28 1994 ...STRONG THUNDERSTORMS WERE MOVING THROUGH THE METRO AREA... AT 448 PM...RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN MOVING ACROSS NORTHERN ST LOUIS COUNTY...JUST ENTERING THE NORTHERN LIMITS OF THE CITY OF ST LOUIS. THIS STORM PRODUCED WIND GUSTS OF 40 MILES AN HOUR AT LAMBERT FIELD ALONG WITH LOWERED VISIBILITIES DUE TO THE HEAVY RAIN. OTHER SCATTERED THUNDERSTORMS EXTENDED FROM NEAR SPRINGFIELD ILLINOIS ACROSS ST LOUIS COUNTY TO NEAR THE ROLLA AREA. THE HEAVIEST RAIN FROM THESE STORMS WILL MOVE JUST NORTH AND JUST SOUTH OF ST LOUIS CITY BETWEEN 500 AND 530 PM. THE THREAT FOR STRONG THUNDERSTORM WILL THEN SHIFT TO COMMUNITIES EAST AND SOUTH OF ST LOUIS INTO THE EVENING HOURS. IF YOU ARE OUTDOORS WHEN STORMS APPROACH...SEEK SHELTER. LIGHTNING IS AN UNDERRATED KILLER SO STAY AW4AY FROM TREES OR HIGH OBJECTS. LISTEN TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Aug 28, 5:34 PM CDT, 7 minutes before
ILZ069-100-102-101-074-290030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 534 PM CDT SUN AUG 28 1994 ...STRONG THUNDERSTORMS CONTINUE TO ROLL THROUGH SOUTHWEST ILLINOIS... AT 530 PM...RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN NEAR LEBANON...IN NORTHEAST ST CLAIR COUNTY ILLINOIS. THIS STORM PRODUCED STRONG WIND GUSTS AND VERY HEAVY RAIN WHEN IT MOVED THROUGH O'FALLON SHORTLY AFTER 500 PM. THIS STORM WAS MOVING SOUTHEAST AND WILL MOVE INTO THE COMMUNITIES OF TRENTON AND GERMANTOWN BY 600 PM. OTHER THUNDERSTORMS EXTENDED FROM CENTRAL ILLINOIS TO JUST SOUTH OF ST LOUIS. THESE MAY ALSO PRODUCE LOCALLY HEAVY RAIN AND GUSTY WIND. FOR THOSE OF YOU WITH OUTDOOR PLANS...BE READY TO SEEK SHELTER WHEN STORMS MOVE INTO YOUR AREA. ALONG WITH GUSTY WIND AND HEAVY RAIN... FREQUENT LIGHTNING IS ANOTHER DANGEROUS THREAT. SHEA
Special weather statement, Aug 28, 5:36 PM CDT, 5 minutes before
ILZ069-100-102-101-074-290030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 534 PM CDT SUN AUG 28 1994 ...STRONG THUNDERSTORMS CONTINUE TO ROLL THROUGH SOUTHWEST ILLINOIS... AT 530 PM...RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN NEAR LEBANON...IN NORTHEAST ST CLAIR COUNTY ILLINOIS. THIS STORM PRODUCED STRONG WIND GUSTS AND VERY HEAVY RAIN WHEN IT MOVED THROUGH O'FALLON SHORTLY AFTER 500 PM. THIS STORM WAS MOVING SOUTHEAST AND WILL MOVE INTO THE COMMUNITIES OF TRENTON AND GERMANTOWN BY 600 PM. OTHER THUNDERSTORMS EXTENDED FROM CENTRAL ILLINOIS TO JUST SOUTH OF ST LOUIS. THESE MAY ALSO PRODUCE LOCALLY HEAVY RAIN AND GUSTY WIND. FOR THOSE OF YOU WITH OU|TDOOR PLANS...BE READY TO SEEK SHELTER WHEN STORMS MOVE INTO YOUR AREA. ALONG WITH GUSTY WIND AND HEAVY RAIN... FREQUENT LIGHTNING IS ANOTHER DANGEROUS THREAT. SHEA
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 6:17 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Marion | 43 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1994Every severe thunderstorm warning in 1994
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; radar from the NEXRAD Level II archive.