Alert archive / Missouri / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 87, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 29, 1990, 5:28 AM CDT for Adams County, Illinois; Lewis County, Marion County, Missouri. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Aug 29, 1990, 5:28 AM CDT (10:28 UTC)
- Expired
- Aug 29, 1990, 6:30 AM CDT
- In force
- 62 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Lewis County, MO, Marion County, MO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 10.5 hours before the alert went out and 370 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
- 3134 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 2146 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTL 291034 RRA
SVRSTL
ILC001-MOC111-127-291130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
528 AM CDT WED AUG 29 1990
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN WEST CENTRAL ILLINOIS
...ADAMS
IN NORTHEAST MISSOURI
...SOUTHEASTERN LEWIS...NORTHEASTERN MARION
A 525 AM WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN
LEWIS COUNTY MISSOURI...ABOUNT 40 MILE NORTHWEST OF HANNIBAL. ONE
INCH HAIL WAS REPORTED IN MONTICELLO MISSOURI...LEWIS COUNTY...AT 520
AM CDT. THE SEVERE THUNDERSTORM WAS MOVING EAST-SOUTHEAST AT 40 MPH
AND WILL AFFECT THE HANNIBAL-QUINCY AREA BETWEEN 530 AND 630 AM CDT.
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.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 29, 3:45 AM CDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 340 AM CDT WED AUG 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 AM CDT FOR PORTIONS OF EAST CENTRAL MISSOURI AND CENTRAL AND SOUTHERN ILLINOIS... AT 328 AM CDT...THUNDERSTORMS WITH VERY HEAVY RAIN AND STRONG GUSTY WINDS WERE OCCURRING IN WEST CENTRAL ILLINOIS...FROM 40 MILES SOUTHWEST TO 30 MILES SOUTH OF PEORIA ILLINOIS. THESE STORMS WERE PART OF AN AREA OF SHOWERS AND THUNDERSTORMS THAT STRETCHED FROM BURLINGTON IN SOUTHEAST IOWA TO CHAMPAIGN IN EAST CENTRAL ILLINOIS. THE RAIN WAS MOVING TO THE SOUTHEAST AT 45 MILES AN HOUR. RADAR NOWCAST...SHOWERS AND THUNDERSTORMS WILL CONTINUE IN PAR4TS OF THE SOUTBERN HALF OF ILLINOIS AND EXTREME EAST MISSOURI THIS MORNING. HUTSELL
Special weather statement, Aug 29, 4:44 AM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 440 AM CDT WED AUG 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 AM CDT FOR PORTIONS OF EAST CENTRAL MISSOURI AND CENTRAL AND SOUTHERN ILLINOIS... AT 434 AM CDT...THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING IN WEST CENTRAL AND CENTRAL ILLINOIS. THESE STORMS WERE LOCATED 40 MILES NORTH OF QUINCY...20 MILES NORTH OF SPRINGFIELD...AND 15 MILES SOUTHWEST OF DECATUR ILLINOIS. OTHER SHOWERS AND THUNDERSTORMS WERE SCATTERED FROM EXTREME NORTHEAST MISSOURI THROUGH CENTRAL ILLINOIS AND ON INTO INDIANA. THE RAIN WAS MOVING TO THE SOUTHEAST AT 45 MILES A HOUR. RADAR NOWCAST...SHOWERS AND THUNDERSTORMS WILL CONTINUE IN PARTS OF THE SOUTHERN HALF OF ILLINOIS AND EXTREME EAST MISSOURI THIS MORNING. HUTSELL
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 2:16 AM CDT | Severe Thunderstorm Warning | LSX | Clark, Scotland | 59 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1990Severe Thunderstorm Warnings in Illinois, 1990Every severe thunderstorm warning in 1990
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.