Alert archive / Illinois / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 41, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 25, 1989, 1:15 AM CDT for Calhoun County, Greene County, Illinois. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- May 25, 1989, 1:15 AM CDT (06:15 UTC)
- Expired
- May 25, 1989, 2:00 AM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Calhoun County, IL, Greene County, IL
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
Peoria Regional, IL (KPIA), launched 00:00Z, 6.3 hours before the alert went out and 175 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
- NaN m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTL 250620
SVRSTL
ILC013-061-250700-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
115 AM CDT THU MAY 25 1989
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST ILLINOIS
...CALHOUN...GREENE
AT 105 AM CDT A LINE OF VERY HEAVY THUNDERSTORMS EXTENDED FROM 15
MILES NORTHWEST OF JACKSONVILLE ILLINOIS TO 80 MILES NORTHWEST OF ST
LOUIS MISSOURI. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 35 MILES
PER HOUR.
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, May 24, 9:54 PM CDT, 3 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 950 PM CDT WED MAY 24 1989 ...TORNADO WATCH FOR PARTS OF NORTHERN AND WEST CENTRAL MISSOURI INTO WEST CENTRAL ILLINOIS... AT 940 PM A BAND OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN... STRONG WINDS AND POSSIBLY HAIL...EXTENDED FROM LANCASTER MISSOURI... ABOUT 20 MILES NORTH OF KIRKSVILLE...TO NEAR KANSAS CITY. THE STORMS WERE MOVING TO THE EAST AT 40 MPH AND WILL CONTINUE TRACKING ACROSS PARTS OF NORTHEAST AND NORTH CENTRAL MISSOURI FROM 10 PM TO MIDNIGHT. A FEW OF THESE STORMS SHOULD REACH THE KIRKSVILLE AREA BY 1030 PM. MCCARTHY
Special weather statement, May 25, 12:31 AM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 1230 AM CDT THU MAY 25 1989 ...TORNADO WATCH FOR PARTS OF NORTHERN AND WEST CENTRAL MISSOURI INTO WEST CENTRAL ILLINOIS... AT 1230AM...A LINE OF VERY STRONG THUNDERSTORMS EXTENDED ACROSS PORTIONS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. THE LEADING EDGE OF THIS LINE EXTENDED FROM NEAR PITTSFIELD IN PIKE COUNTY ILLINOIS..TO HANNIBAL TO MEXICO MISSOURI. THIS IS ABOUT 50 MILES TO THE NORTHWEST OF ST. LOUIS. THE STRONGEST STORMS IN THIS LINE WERE PRODUCING VERY HEAVY RAIN.. UP TO AN INCH PER HOUR..STRONG GUSTY WINDS..AND PERHAPS SOME HAIL. THE LINE WAS DROPPING EAST SOUTHEAST AT 25 MPH AND SHOULD MOVE ACROSS BROWN SCOTT AND PIKE COUNTIES IN ILLINOIS AS WELL AS PIKE AND RALLS COUNTIES IN MISSOURI BETWEEN 1230 AND 130 THIS MORNING. THESE STORMS SHOULD NEAR THE ST LOUIS AREA AROUND 2 OR 3AM THIS MORNING. A TORNADO WATCH CONTINUES FORp PORTIONS OF CENTRAL MISSOURI AND WEST CENTRAL ILLINOIS UNTIL 6AM. ALL WATCHES ARE NOW CANCELLED FROM 30 MILES NW OF HANNIBAL..TO 30 MILES S OF KANSAS CITY. FELDT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 12:54 AM CDT | Severe Thunderstorm Warning | LSX | Pike, Scott | 36 min |
| May 25, 8:50 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 55 min |
| May 25, 8:50 AM CDT | Severe Thunderstorm Warning | LSX | Greene | 55 min |
| May 25, 9:52 AM CDT | Severe Thunderstorm Warning | LSX | Greene | 38 min |
| May 25, 10:59 AM CDT | Severe Thunderstorm Warning | LSX | Monroe | 31 min |
| May 25, 12:46 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 44 min |
| May 25, 2:33 PM CDT | Tornado Warning | LSX | Effingham, Fayette | 27 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1989Every severe thunderstorm warning in 1989
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.