Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 161, NWS St. Louis, MO

July 4, 1995Saint Clair County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 4, 1995, 3:55 PM CDT for Saint Clair County, Illinois. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: Jul 4, 1995, 3:55 PM CDT (20:55 UTC)
Expired: Jul 4, 1995, 4:45 PM CDT
In force: 50 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 20:57 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, 8.9 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-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: 1110 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 211 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 042057 RRA
SVRSTL
ILC163-042145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
355 PM CDT TUE JUL 4 1995
 
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
 
   ...WESTERN ST CLAIR COUNTY
 
AT 355 PM CDT...NWS DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM OVER
SOUTHERN PART OF ST.: LOUIS CITY MOVING NORTHEAST AT 15 MPH. THE CITY
OF EAST ST. LOUIS IS IN THE PATH OF THIS STORM.
 
THIS STORM HAS A HISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!
 
RP

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, Jul 4, 12:25 PM CDT, 3 hours 30 minutes before

ILZ049-058-095>099-MOZ036-051-052-060-061-041820-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1220 PM CDT TUE JUL 4 1995

...STRONG THUNDERSTORMS WERE MOVING ACROSS PARTS OF WEST CENTRAL
ILLINOIS AND EASTERN MISSOURI...

AT 1220 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM NEAR PITTSFIELD ILLINOIS...TO JUST SOUTH
OF MONTGOMERY CITY MISSOURI.

THE LINE WAS MOVING NORTHEAST AT 40 MILES AN HOUR...AND WILL BE MOVING
INTO EASTERN PIKE...SCOTT...GREENE...JERSEY..AND CALHOUN COUNTIES IN
ILLINOIS...AND INTO LINCOLN...ST CHARLES...AND WARREN COUNTIES IN
MISSOURI...BETWEEN 1220 AND 120 PM THIS AFTERNOON.

A CHECK WITH COUNTY SHERIFFSd INDICATE GUSTY WINDS OF 30 TO 40 MILES AN
HOUR...AND SEVERAL PERIODS OF HEAVY RAIN...WITH THE PASSAGE OF THESE
STORMS.  HOWEVER...PEOPLE SHOULD REMAIN ALERT...AS THESE STORMS MAY
INTENSIFY OVER THE NEXT HOUR.

DLF/TRUETT

Local storm report, Jul 4, 1:00 PM CDT, 2 hours 55 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
100 PM CDT TUE JUL 4 1995

...REPORTS FROM THIS MORNING...

TIME (CDT)    ...CITY LOCATION...     EVENT
              ...COUNTY LOCATION...

642 AM         MEMPHIS                FLOODING OF SOME ROADS IN
               SCOTLAND CO            MEMPHIS AND SOME COUNTY ROADS

900 AM         CLARK CO               RTE. K NORTH OF LURAY AND
                                      RTE. D CLOSED DUE TO HIGH WATER

SILVERMAN

Special weather statement, Jul 4, 1:06 PM CDT, 2 hours 49 minutes before

ILZ049-058>060-095>099-041900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
106 PM CDT TUE JUL 4 1995

...STRONG THUNDERSTORMS WERE MOVING INTO SCOTT AND GREEN COUNTIES IN
WEST CENTRAL ILLINOIS.

AT 105 PM CDT...EATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
STRONG THUNDESTORMS EXTENDING FROM 40 MILES WEST NORTHWEST OF
SPRINGFIELD ILLINOIS TO 25 MILES NORTH OF ST. LOUIS.

THE STRONGEST THUNDERSTORMS WERE IN CENTRAL SCOTT AND WESTERN GREEN
COUNTIES IN WEST CENTRAL ILLINOIS. THESE STORMS WILL BE MOVING THROUGH
THE TOWNS OF ROODHOUSE IN NORTHERN GREEN COUNTY BY 115 PM AND THROUGH
GIRARD IN NORTHERN MACOUPIN COUNTY BETWEEN 140 AND 200 PM.

WIND GUSTS OF 40 TO 45 MPH AND HEAVY DOWNPOURS CAN BE EXPECTED WITH
THESE STORMS.

THE THUNDERSTORMS WERE MOVING TO THE EAST AT 30 MPH.

RP

Special weather statement, Jul 4, 1:16 PM CDT, 2 hours 39 minutes before

ILZ049-058>060-095>099-041900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
106 PM CDT TUE JUL 4 1995

...STRONG THUNDERSTORMS WERE MOVING INTO SCOTT AND GREEN COUNTIES IN
WEST CENTRAL ILLINOIS.

AT 105 PM CDT...EATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
STRONG THUNDESTORMS EXTENDING FROM 40 MILES WEST NORTHWEST OF
SPRINGFIELD ILLINOIS TO 25 MILES NORTH OF ST. LOUIS.

THE STRONGEST THUNDERSTORMS WERE IN CENTRAL SCOTT AND WESTERN GREEN
COUNTIES IN WEST CENTRAL ILLINOIS. THESE STORMS WILL BE MOVING THROUGH
THE TOWNS OF ROODHOUSE IN NORTHERN GREEN COUNTY BY 115 PM AND THROUGH
GIRARD IN NORTHERN MACOUPIN COUNTY BETWEEN 140 AND 200 PM.

WIND GUSTS OF 40 TO 45 MPH AND HEAVY DOWNPOURS CAN BE EXPECTED WITH
THESE STORMS.

THE THUNDERSTORMS WERE MOVING TO THE EAST AT 30 MPH.

RP

Special weather statement, Jul 4, 2:20 PM CDT, 1 hour 35 minutes before

MOZ001>115-KSZ102>105-042300-

MISSOURI SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
220 PM CDT TUE JUL 4 1995

...OUTBREAK OF SEVERE THUNDERSTORMS EXPECTED ACROSS MISSOURI THIS
AFTERNOON AND TONIGHT...

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE
STATE OF MISSOURI THIS AFTERNOON AND TONIGHT.

AN UNSEASONABLY STRONG UPPER LEVEL DISTURBANCE WILL MOVE EASTWARD
ACROSS THE PLAINS THIS AFTERNOON AND EVENING.  AS THIS STORM SYSTEM
AND THE ASSOCIATED COLD FRONT PUSH EASTWARD...IT WILL INTERACT WITH
A VERY MOIST AND UNSTABLE AIR MASS IN PLACE ACROSS THE PLAINS AND
MISSOURI...TRIGGERING THE DEVELOPMENT OF THUNDERSTORMS.  GIVEN THE
STRENGTH OF THE WEATHER PARAMETERS...IT IS LIKELY THAT MANY OF THE
THUNDERSTORMS WILL BECOME SEVERE WITH THE POTENTIAL FOR LARGE
HAIL...DAMAGING WINDS...AND A FEW TORNADOES.

A TORNADO WATCH IS CURRENTLY IN EFFECT FOR MUCH OF WESTERN MISSOURI
UNTIL 800 PM.  EARLY THIS AFTERNOON THUNDERSTORMS WERE ALREADY
DEVELOPING ACROSS PORTIONS OF WESTERN KANSAS.  THUNDERSTORMS ARE
EXPECTED TO CONTINUE TO DEVELOP EASTWARD ACROSS MISSOURI THIS
AFTERNOON AND TONIGHT...WITH ADDTIONAL SEVERE WEATHER WATCHES
LIKELY.

BECAUSE OF THE FOURTH OF JULY HOLIDAY...THOSE ATTENDING OR PLANNING
ON ATTENDING OUTDOOR ACTIVITIES...SHOULD CLOSELY MONITOR THE LATEST
WEATHER CONDITIONS AND FORECASTS...AND BE PREPARED TO SEEK SHELTER
AT ANY TIME.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ALERT TO THE
LATEST FORECASTS FOR SKYWARN ACTION THIS AFTERNOON AND TONIGHT.

GLASS

Special weather statement, Jul 4, 2:23 PM CDT, 1 hour 32 minutes before

MOZ001>115-KSZ102>105-042300-

MISSOURI SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
220 PM CDT TUE JUL 4 1995

...OUTBREAK OF SEVERE THUNDERSTORMS EXPECTED ACROSS MISSOURI THIS
AFTERNOON AND TONIGHT...

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE
STATE OF MISSOURI THIS AFTERNOON AND TONIGHT.

AN UNSEASONABLY STRONG UPPER LEVEL DISTURBANCE WILL MOVE EASTWARD
ACROSS THE PLAINS THIS AFTERNOON AND EVENING.  AS THIS STORM SYSTEM
AND THE ASSOCIATED COLD FRONT PUSH EASTWARD...IT WILL INTERACT WITH
A VERY MOIST AND UNSTABLE AIR MASS IN PLACE ACROSS THE PLAINS AND
MISSOURI...TRIGGERING THE DEVELOPMENT OF THUNDERSTORMS.  GIVEN THE
STRENGTH OF THE WEATHER PARAMETERS...IT IS LIKELY THAT MANY OF THE
THUNDERSTORMS WILL BECOME SEVERE WITH THE POTENTIAL FOR LARGE
HAIL...DAMAGING WINDS...AND A FEW TORNADOES.

A TORNADO WATCH IS CURRENTLY IN EFFECT FOR MUCH OF WESTERN MISSOURI
UNTIL 800 PM.  EARLY THIS AFTERNOON THUNDERSTORMS WERE ALREADY
DEVELOPING ACROSS PORTIONS OF WESTERN KANSAS.  THUNDERSTORMS ARE
EXPECTED TO CONTINUE TO DEVELOP EASTWARD ACROSS MISSOURI THIS
AFTERNOON AND TONIGHT...WITH ADDTIONAL SEVERE WEATHER WATCHES
LIKELY.

BECAUSE OF THE FOURTH OF JULY HOLIDAY...THOSE ATTENDING OR PLANNING
ON ATTENDING OUTDOOR ACTIVITIES...SHOULD CLOSELY MONITOR THE LATEST
WEATHER CONDITIONS AND FORECASTS...AND BE PREPARED TO SEEK SHELTER
AT ANY TIME.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ALERT TO THE
LATEST FORECASTS FOR SKYWARN ACTION THIS AFTERNOON AND TONIGHT.

GLASS

Nearby

Severe Thunderstorm Warnings in Illinois, 1995 Every 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.