Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 94, NWS St. Louis, MO

May 27, 1995Saint Clair County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 1995, 4:41 PM CDT for Saint Clair County, Illinois. It was in force for 24 min.

The area

The counties it named.

The facts

Issued
May 27, 1995, 4:41 PM CDT (21:41 UTC)
Expired
May 27, 1995, 5:05 PM CDT
In force
24 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Saint Clair County, IL

The radar

The St Louis radar (KLSX), 70 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 219 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 1995-05-27Temperature 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 1995-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.193958Sfc1 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
537 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
349 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 272145
SVRSTL
ILC163-272215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
441 PM CDT SAT MAY 27 1995
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ILLINOIS
 
   ...NORTHERN ST CLAIR COUNTY
 
AT 440 PM...A SEVERE THUNDERSTORM EXTENDED FROM JUST NORTH OF BELLEVILLE
TO FREEBURG ILLINOIS. THIS STORM WAS MOVING TO THE NORTHEAST AT 30 MPH.
THE TOWN OF LEBANON IS IN THE PATH OF THIS STORM.
 
THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL
AND DEADLY LIGHTNING AND VERY HEAVY RAIN. STAY INSIDE AND AWAY FROM
WINFDOWS.
 
AMS

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 27, 3:11 PM CDT, 1 hour 30 minutes before
MOZ055-056-068-069-272115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MISSOURI
310 PM CDT SAT MAY 27 1995

...STRONG THUNDERSTORMS HAVE DEVELOPED...

AT 307PM A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 15 MILES SOUTH OF
SEDALIA TO 35 MILES NORTH OF SPRINGFIELD...OR FROM COLE CAMP TO JUST
NORTH OF BOLIVAR.

MOVMENT WAS TO THE NORTHEAST AT 35 MILES PER HOUR.

THESE STORMS WILL BE CAPABLE OF TORRENTIAL RAIN...STRONG GUSTY
WINDS...AND SMALL HAIL AS THEY PASS THROUGH.  TOWNS IN THE PATH OF
THESE STORMS INCLUDE STOVER...VERSAILLES...GRAVOIS MILLS...
HERMITAGE...AND CLIMAX SPRINGS.

TRUMAN RESERVOIR...POMME DE TERRE LAKE...AND THE LAKE OF THE OZARKS ARE
ALSO GOING TO BE AFFECTED BY THESE STORMS.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.
TUNE IN NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR
THE LATEST WEATHER INFORMATION.

IN OPEN AREAS...GO TO A LOW PLACE SUCH AS A RAVINE OR VALLEY.

REAUGH

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 4:58 PM CDTSevere Thunderstorm WarningLSXClinton, Madison32 min
May 27, 5:36 PM CDTSevere Thunderstorm WarningLSXMarion54 min
May 27, 6:15 PM CDTTornado WarningLSXGreene24 min
May 27, 6:17 PM CDTTornado WarningLSXMontgomery19 min
May 27, 6:22 PM CDTTornado WarningLSXScott28 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1995Every severe thunderstorm warning in 1995

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.