Alert archive / Illinois / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 9, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 19, 1993, 8:25 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Apr 19, 1993, 8:25 PM CDT (01:25 UTC)
- Expired
- Apr 19, 1993, 9:15 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 66 km from the middle of the area, began a volume at 01:28 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 00:00Z, 1.4 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
- 151 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1593 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 364 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 200127 SVRSTL ILC133-163-200215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 825 PM CDT MON APR 19 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...MONROE COUNTY...ST CLAIR COUNTY AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 30 SOUTH OF ST. LOUIS ALONG THE MISSISSIPPI RIVER...JUST WEST OF KIDD. STORM WAS MOVING TO THE NORTHEAST AT 45 MPH...AND WILL AFFECT THE CITIES OF KIDD...FULTS...AND WATERLOO. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. METZE/TRUETT
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 19, 7:00 PM CDT, 1 hour 25 minutes before
MOZ006-009-010-011-013-014-200100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 700 PM CDT MON APR 19 1993 ...A TORNADO WATCH CONTINUES IN EFFECT FOR THE EASTERN HALF OF CENTRAL MISSOURI UNTIL 8PM... AT 700 PM VERY STRONG THUNDERSTORMS WERE IN CENTRAL MISSOURI FROM COLUMBIA TO NEAR HARRISBURG...15 MILES NORTH OF COLUMBIA. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MPH. THESE THUNDERSTORMS WILL PRODUCE AT LEAST SOME SMALL HAIL AND VERY HEAVY RAIN THAT MAY CAUSE SOME STREET FLOODING AS THEY PASS THROUGH COLUMBIA AND NEARBY COMMUNITIES NORTH AND EAST OF COLUMBIA BETWEEN 7PM AND 730PM. NO WARNINGS ARE IN EFFECT FOR PARTS OF CENTRAL MISSOURI AT 7PM BUT SOME SEVERE WEATHER IS STILL POSSIBLE AT LEAST UNTIL 8PM. LARM
Special weather statement, Apr 19, 7:06 PM CDT, 1 hour 19 minutes before
MOZ006-009-010-011-013-014-200100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 700 PM CDT MON APR 19 1993 ...A TORNADO WATCH CONTINUES IN EFFECT FOR THE EASTERN HALF OF CENTRAL MISSOURI UNTIL 8PM... AT 700 PM VERY STRONG THUNDERSTORMS WERE IN CENTRAL MISSOURI FROM COLUMBIA TO NEAR HARRISBURG...15 MILES NORTH OF COLUMBIA. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MPH. THESE THUNDERSTORMS WILL PRODUCE AT LEAST SOME SMALL HAIL AND VERY HEAVY RAIN THAT MAY CAUSE SOME STREET FLOODING AS THEY PASS THROUGH COLUMBIA AND NEARBY COMMUNITIES NORTH AND EAST OF COLUMBIA BETWEEN 7PM AND 730PM. NO WARNINGS ARE IN EFFECT FOR PARTS OF CENTRAL MISSOURI AT 7PM BUT SOME SEVERE WEATHER IS STILL POSSIBLE AT LEAST UNTIL 8PM. LARM
Special weather statement, Apr 19, 7:08 PM CDT, 1 hour 17 minutes before
MOZ011-012-200115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 708 PM CDT MON APR 19 1993 ...TORNADO WATCH IS IN EFFECT FOR EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 12AM CDT TUESDAY... AT 707 PM CDT...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 38 NORTHWEST OF ST. LOUIS TO 35 WEST OF ST LOUIS. THE STORMS WERE MOVING TO THE NORTHEAST AT 40 MPH. THESE STORMS HAD A HISTORY OF PRODUCING LARGE HAIL AND GUSTY WINDS ACROSS CENTRAL MISSOURI EARLIER THIS EVENING. ALSO...TORNADOES ARE POSSIBLE WITH THESE STORMS. IF YOU ARE CAUGHT OUTDOORS TAKE SHELTER IMMEDIATELY IN A STRONG SHELTER. IF INDOORS...STAY AWAY FROM WINDOWS AND HEAD TO THE BASEMENT OR STRONG STURDY ROOM IN THE HOUSE. METZE
Special weather statement, Apr 19, 7:08 PM CDT, 1 hour 17 minutes before
MOZ011-012-200115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 708 PM CDT MON APR 19 1993 ...TORNADO WATCH IS IN EFFECT FOR EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 12AM CDT TUESDAY... AT 707 PM CDT...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 38 NORTHWEST OF ST. LOUIS TO 35 WEST OF ST LOUIS. THE STORMS WERE MOVING TO THE NORTHEAST AT 40 MPH. THESE STORMS HAD A HISTORY OF PRODUCING LARGE HAIL AND GUSTY WINDS ACROSS CENTRAL MISSOURI EARLIER THIS EVENING. ALSO...TORNADOES ARE POSSIBLE WITH THESE STORMS. IF YOU ARE CAUGHT OUTDOORS TAKE SHELTER IMMEDIATELY IN A STRONG SHELTER. IF INDOORS...STAY AWAY FROM WINDOWS AND HEAD TO THE BASEMENT OR STRONG STURDY ROOM IN THE HOUSE. METZE
Special weather statement, Apr 19, 7:58 PM CDT, 27 minutes before
MOZALL-200200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 801 PM CDT MON APR 19 1993 ...THE TORNADO WATCH FOR CENTRAL AND NORTHEAST MISSOURI HAS EXPIRED... ...THE TORNADO WATCH FOR EASTERN AND SOUTHEAST MISSOURI IS IN EFFECT UNTIL MIDNIGHT... TORNADO WATCH NUMBER 142 THAT WAS IN EFFECT FOR CENTRAL AND NORTHEAST MISSOURI EXPIRED AT 8 PM. THERE WILL BE ADDITIONAL SHOWERS AND THUNDERSTORMS BUT THEY ARE NOT EXPECTED TO BE SEVERE. TORNADO WATCH NUMBER 145 REMAINS IN EFFECT UNTIL MIDNIGHT. TUCKER
Special weather statement, Apr 19, 8:01 PM CDT, 24 minutes before
MOZALL-200200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 801 PM CDT MON APR 19 1993 ...THE TORNADO WATCH FOR CENTRAL AND NORTHEAST MISSOURI HAS EXPIRED... ...THE TORNADO WATCH FOR EASTERN AND SOUTHEAST MISSOURI IS IN EFFECT UNTIL MIDNIGHT... TORNADO WATCH NUMBER 142 THAT WAS IN EFFECT FOR CENTRAL AND NORTHEAST MISSOURI EXPIRED AT 8 PM. THERE WILL BE ADDITIONAL SHOWERS AND THUNDERSTORMS BUT THEY ARE NOT EXPECTED TO BE SEVERE. TORNADO WATCH NUMBER 145 REMAINS IN EFFECT UNTIL MIDNIGHT. TUCKER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 8:54 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 51 min |
| Apr 19, 9:38 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Marion | 52 min |
| Apr 19, 10:02 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 43 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; radar from the NEXRAD Level II archive.