Alert archive / Missouri / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 21, NWS St. Louis, MO

April 26, 1989Pike County, Illinois; Marion County, Pike County, Ralls County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 26, 1989, 9:28 PM CDT for Pike County, Illinois; Marion County, Pike County, Ralls County, Missouri. It was in force for 32 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 26, 1989, 9:28 PM CDT (02:28 UTC)
Expired: Apr 26, 1989, 10:00 PM CDT
In force: 32 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Pike County, IL, Marion County, MO, Pike County, MO, Ralls County, MO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Apr 26, 9:45 PM CDT	Thunderstorm Wind 70	Marion, MO
Apr 26, 9:55 PM CDT	Thunderstorm Wind 60	Ralls, MO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 00:00Z, 2.5 hours before the alert went out and 189 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1526 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 270236 RRA
SVRSTL
ILC149-MOC163-127-173-270300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
928 PM CDT WED APR 26 1989
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST CENTRAL ILLINOIS
          ...PIKE
IN EAST CENTRAL MISSOURI
          ...PIKE
IN NORTHEAST MISSOURI
          ...MARION...RALLS
 
AT 920 PM CDT RADAR INDICATED SEVERE THUNDERSTORMS IN PORTIONS OF
NORTHEAST MISSOURI AND SOUTHWEST ILLINOIS. THE STRONGEST STORM WAS
LOCATED ABOUT 20 MILES WEST OF QUINCY IN MARION COUNTY MISSOURI. WIND
GUSTS OF 50 TO 60 MPH CAN BE EXPECTED WITH THESE STORMS. THE STORMS
WERE MOVING TO THE SOUTHEAST AROUND 40 MPH.
 
 
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.
 
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.

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 8:39 PM CDT	Severe Thunderstorm Warning	LSX	Adams	36 min
Apr 26, 8:47 PM CDT	Severe Thunderstorm Warning	LSX	Brown	28 min
Apr 26, 10:32 PM CDT	Tornado Warning	LSX	Greene	28 min
Apr 26, 10:47 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	28 min
Apr 26, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Jersey, Madison	33 min
Apr 26, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	33 min
Apr 26, 11:01 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	44 min
Apr 26, 11:08 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	52 min
Apr 27, 6:36 PM CDT	Tornado Warning	LSX	Clark	69 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1989 Severe Thunderstorm Warnings in Illinois, 1989 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.