Alert archive / Illinois / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 125, NWS St. Louis, MO

June 27, 1997Monroe County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 27, 1997, 4:03 PM CDT for Monroe County, Illinois. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 27, 1997, 4:03 PM CDT (21:03 UTC)
Expired
Jun 27, 1997, 4:45 PM CDT
In force
42 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Monroe County, IL

The radar

The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 21:06 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

Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 248 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 1997-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 1997-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1497 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
68 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.

395 
WUUS1 KSTL 272105
SVRSTL
ILC133-272145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
403 PM CDT FRI JUN 27 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ILLINOIS
 
   ...MONROE COUNTY
 
AT 400 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
CROSSING THE MISSISSIPPI RIVER INTO MONROE COUNTY.
 
THE STORM WAS JUST NORTH OF VALMEYER AND WAS MOVING TO THE NORTHEAST AT
15 MPH.
 
THE TOWNS OF COLUMBIA...CENTERVILLE...AND MILLSTADT ARE IN THE PATH OF
THE STORM.
 
THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...LARGE HAIL
AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
 
AMS/ST

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, Jun 27, 11:15 AM CDT, 4 hours 48 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-281000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1115 AM CDT FRI JUN 27 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

NO SEVERE WEATHER IS ANTICIPATED TODAY.  SLOW MOVING THUNDERSTORMS IN
CENTRAL MISSOURI ARE EXPECTED TO MOVE SLOWLY NORTHEASTWARD INTO EASTERN
MISSOURI BY LATE THIS AFTERNOON OR EARLY THIS EVENING.  SOME OF THESE
STORMS MAY PRODUCE LOCALLY HEAVY RAIN BUT THE THUNDERSTORMS ARE EXPECTED
TO REMAIN BELOW SEVERE LEVELS.

SKYWARN ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

GKS
Special weather statement, Jun 27, 11:28 AM CDT, 4 hours 35 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-281000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1115 AM CDT FRI JUN 27 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

NO SEVERE WEATHER IS ANTICIPATED TODAY.  SLOW MOVING THUNDERSTORMS IN
CENTRAL MISSOURI ARE EXPECTED TO MOVE SLOWLY NORTHEASTWARD INTO EASTERN
MISSOURI BY LATE THIS AFTERNOON OR EARLY THIS EVENING.  SOME OF THESE
STORMS MAY PRODUCE LOCALLY HEAVY RAIN BUT THE THUNDERSTORMS ARE EXPECTED
TO REMAIN BELOW SEVERE LEVELS.

SKYWARN ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

GKS

Nearby

Severe Thunderstorm Warnings in Illinois, 1997Every severe thunderstorm warning in 1997

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.