Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 197, NWS St. Louis, MO

August 16, 1995Adams County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 16, 1995, 2:45 PM CDT for Adams County, Illinois. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Aug 16, 1995, 2:45 PM CDT (19:45 UTC)
Expired
Aug 16, 1995, 3:30 PM CDT
In force
45 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Adams County, IL

The radar

The St Louis radar (KLSX), 150 km from the middle of the area, began a volume at 19:46 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

Davenport, (KDVN), launched 12:00Z, 7.8 hours before the alert went out and 190 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, Davenport, at 12:00Z on 1995-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 246 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 12:00Z on 1995-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
246 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
755 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 161947 RRA
SVRSTL
ILC001-162030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
245 PM CDT WED AUG 16 1995
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL ILLINOIS
 
   ...ADAMS COUNTY
 
AT 243 PM....NATIONAL WEATHER SERVICE RADAR WAS DETECTING A SEVERE
THUNDERSTORM JUST EAST OF QUINCY. THE QUINCY AIRPORT REPORTED A GUST TO
71 MPH WHEN THE STORM MOVED THROUGH. THE STORM WAS MOVING TO THE EAST AT
15 MPH. THE STORM WILL MOVE THROUGH THE TOWNS OF PAYSON...CAMP POINT AND
KINGSTON BETWEEN 3 AND 330 PM.
 
THIS STORM HAS A HISTORYR OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!
 
GKS/TPS
 
&

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, Aug 16, 1:11 PM CDT, 1 hour 34 minutes before
ILZ049-058>060-095>100-MOZ009-010-018-019-026-027-034>036-041-042-
047>052-059>064-170015-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
111 PM CDT WED AUG 16 1995

...THERE IS A SLIGHT RISK OF SEVERE WEATHER IN PORTIONS OF NORTHEAST
...EAST CENTRAL AND CENTRAL MISSOURI FOR THIS AFTERNOON AND THIS
EVENING...

THERE IS A CHANCE FOR SHOWERS AND THUNDERSTORMS OVER PORTIONS OF EAST
CENTRAL...NORTHEAST AND CENTRAL MISSOURI THIS AFTERNOON AND THIS
EVENING.  THIS AREA WILL INCLUDE THE CITIES OF HANNIBAL...COLUMBIA AND
ST LOUIS.

THE COMBINATION OF AN UPPER WEATHER DISTURBANCE AND VARY UNSTABLE AIR
MASS WILL PRODUCE A CHANCE FOR THUNDERSTORMS.  ALSO FEW OF THESE
STORMS COULD REACH SEVERE LEVEL WITH STRONG AND GUSTY WIND AND LARGE
HAIL.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE
LATEST WEATHER CONDITIONS IN CASE SPOTTER ACTIVATION IS NEEDED.

VA
Special weather statement, Aug 16, 1:38 PM CDT, 1 hour 7 minutes before
ILZ049-058>060-095>100-MOZ009-010-018-019-026-027-034>036-041-042-
047>052-059>064-170015-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
111 PM CDT WED AUG 16 1995

...THERE IS A SLIGHT RISK OF SEVERE WEATHER IN PORTIONS OF NORTHEAST
...EAST CENTRAL AND CENTRAL MISSOURI FOR THIS AFTERNOON AND THIS
EVENING...

THERE IS A CHANCE FOR SHOWERS AND THUNDERSTORMS OVER PORTIONS OF EAST
CENTRAL...NORTHEAST AND CENTRAL MISSOURI THIS AFTERNOON AND THIS
EVENING.  THIS AREA WILL INCLUDE THE CITIES OF HANNIBAL...COLUMBIA AND
ST LOUIS.

THE COMBINATION OF AN UPPER WEATHER DISTURBANCE AND VARY UNSTABLE AIR
MASS WILL PRODUCE A CHANCE FOR THUNDERSTORMS.  ALSO FEW OF THESE
STORMS COULD REACH SEVERE LEVEL WITH STRONG AND GUSTY WIND AND LARGE
HAIL.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE
LATEST WEATHER CONDITIONS IN CASE SPOTTER ACTIVATION IS NEEDED.

VA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 3:33 PM CDTSevere Thunderstorm WarningLSXBrown42 min
Aug 16, 4:48 PM CDTSevere Thunderstorm WarningLSXAdams42 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.