Alert archive / Illinois / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 13, NWS St. Louis, MO

May 12, 1990Bond County, Fayette County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 12, 1990, 6:13 PM CDT for Bond County, Fayette County, Illinois. It was in force for 47 min. 1 report 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: May 12, 1990, 6:13 PM CDT (23:13 UTC)
Expired: May 12, 1990, 7:00 PM CDT
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Bond County, IL, Fayette County, IL

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
May 12, 6:30 PM CDT	Thunderstorm Wind 0	Fayette, IL

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

Paducah/Barkley, KY (KPAH), launched 12:00Z, 11.2 hours before the alert went out and 213 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1113 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 474 m²/s²
0-3 km storm-relative helicity: 601 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 122318
SVRSTL
ILC005-051-130000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
613 PM CDT SAT MAY 12 1990
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL ILLINOIS
          ...BOND...FAYETTE
 
RADAR AT 610 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 40 MILES
NORTHEAST OF ST LOUIS...JUST NORTHWEST OF GREENVILLE ILLINOIS IN BOND
COUNTY. THE STORM WAS MOVING EAST AT 45 MPH.
 
PERSONS IN THE CITIES ALONG AND NORTH OF INTERSTATE 70 FROM GREENVILLE
TO VANDALIA SHOULD PREPARE TO SEEK SHELTER IF SEVERE WEATHER
APPROACHES.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOESWITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
EISE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	49 min
May 12, 5:21 PM CDT	Tornado Warning	LSX	Jersey	39 min
May 12, 5:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	48 min
May 12, 5:57 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	48 min
May 12, 6:50 PM CDT	Severe Thunderstorm Warning	LSX	Effingham	40 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1990 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.