Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 49, NWS Lincoln, IL

June 20, 1995Douglas County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 20, 1995, 7:18 PM CDT for Douglas County, Illinois. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1995, 7:18 PM CDT (00:18 UTC)
Expired
Jun 20, 1995, 7:45 PM CDT
In force
27 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Douglas County, IL

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.3 hours before the alert went out and 282 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 00:00Z on 1995-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1146 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 1995-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
1146 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1861 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
36 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 KSPI 210020 RRA
SVRSPI
ILC041-210045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
718 PM CDT TUE JUN 20 1995
 
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL ILLINOIS
 
   ...WESTERN DOUGLAS COUNTY
 
AT 718 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO
NORTHWESTERN DOUGLAS COUNTY. THE STORM WAS LOCATED ABOUT 15 MILES SOUTH
OF CHAMPAIGN...AND WAS MOVING WEST-SOUTHWEST AT 25 MPH.
 
PEOPLE IN AND NEAR TUSCOLA...GARRETT...AND ARCOLA SHOULD BE PREPARED AS
THE STORM APPROACHES. MARBLE-SIZE HAIL WAS REPORTED AT THE CHAMPAIGN
AIRPORT AROUND 645 PM.
 
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY. IF YOU ARE IN
ITS PATH...PREPARE FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING.
$$
 
GEELHART
 
&

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 20, 1:38 PM CDT, 5 hours 40 minutes before
ILZ042>048-050>057-061>063-202330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
140 PM CDT TUE JUN 20 1995

...HEAT INDEX VALUES REACH 100 ACROSS CENTRAL AND EAST CENTRAL
ILLINOIS...

TEMPERATURES ACROSS CENTRAL AND EAST CENTRAL ILLINOIS HAVE REACHED THE
MID 90S.  THESE HIGH TEMPERATURES...COMBINED WITH RELATIVE HUMIDITIES
IN THE UPPER 30S TO LOW 40S...WILL PUSH THE HEAT INDEX TO AROUND 100.

HEAT INDICIES FROM 90 TO 105 ARE IN A CATEGORY SUCH THAT INDIVIDUALS
SHOULD USE EXTREME WHEN OUTSIDE.  SUNSTROKE...HEAT CRAMPS AND HEAT
EXHAUSTION ARE POSSIBLE WITH PROLONGED EXPOSURE AND PHYSICAL ACTIVITY.
DRINK PLENTY OF WATER AND TAKE FREQUENT BREAKS WHEN WORKING OR PLAYING
OUTDOORS.

AUTEN
Special weather statement, Jun 20, 1:40 PM CDT, 5 hours 38 minutes before
ILZ042>048-050>057-061>063-202330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
140 PM CDT TUE JUN 20 1995

...HEAT INDEX VALUES REACH 100 ACROSS CENTRAL AND EAST CENTRAL
ILLINOIS THIS AFTERNOON...

TEMPERATURES ACROSS CENTRAL AND EAST CENTRAL ILLINOIS HAVE REACHED THE
MID 90S THIS AFTERNOON.  THESE HIGH TEMPERATURES...COMBINED WITH
RELATIVE HUMDITIES IN THE UPPER 30S TO LOW 40S...WILL PUSH THE HEAT
INDEX TO AROUND 100.

HEAT INDICIES FROM 90 TO 105 ARE IN A CATEGORY SUCH THAT INDIVIDUALS
SHOULD USE EXTREME CAUTION WHEN OUTSIDE.  SUNSTROKE...HEAT CRAMPS AND
HEAT EXHAUSTION ARE POSSIBLE WITH PROLONGED EXPOSURE AND PHYSICAL
ACTIVITY.  DRINK PLENTY OF WATER AND TAKE FREQUENT BREAKS WHEN WORKING
OR PLAYING OUTDOORS.

AUTEN
Special weather statement, Jun 20, 1:44 PM CDT, 5 hours 34 minutes before
ILZ042>048-050>057-061>063-202330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
140 PM CDT TUE JUN 20 1995

...HEAT INDEX VALUES REACH 100 ACROSS CENTRAL AND EAST CENTRAL
ILLINOIS THIS AFTERNOON...

TEMPERATURES ACROSS CENTRAL AND EAST CENTRAL ILLINOIS HAVE REACHED THE
MID 90S THIS AFTERNOON.  THESE HIGH TEMPERATURES...COMBINED WITH
RELATIVE HUMDITIES IN THE UPPER 30S TO LOW 40S...WILL PUSH THE HEAT
INDEX TO AROUND 100.

HEAT INDICIES FROM 90 TO 105 ARE IN A CATEGORY SUCH THAT INDIVIDUALS
SHOULD USE EXTREME CAUTION WHEN OUTSIDE.  SUNSTROKE...HEAT CRAMPS AND
HEAT EXHAUSTION ARE POSSIBLE WITH PROLONGED EXPOSURE AND PHYSICAL
ACTIVITY.  DRINK PLENTY OF WATER AND TAKE FREQUENT BREAKS WHEN WORKING
OR PLAYING OUTDOORS.

AUTEN

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 7:01 PM CDTSevere Thunderstorm WarningILXTazewell44 min
Jun 20, 7:30 PM CDTSevere Thunderstorm WarningILXChristian30 min
Jun 20, 7:50 PM CDTSevere Thunderstorm WarningILXDouglas, Moultrie40 min
Jun 20, 8:03 PM CDTSevere Thunderstorm WarningILXColes42 min
Jun 20, 8:41 PM CDTSevere Thunderstorm WarningILXDouglas49 min
Jun 20, 8:49 PM CDTSevere Thunderstorm WarningILXEdgar41 min
Jun 21, 4:50 PM CDTSevere Thunderstorm WarningILXEdgar55 min
Jun 21, 6:08 PM CDTSevere Thunderstorm WarningILXColes, Cumberland52 min
Jun 21, 6:22 PM CDTSevere Thunderstorm WarningILXMoultrie, Shelby53 min
Jun 21, 6:24 PM CDTSevere Thunderstorm WarningILXPeoria36 min
Jun 21, 6:39 PM CDTSevere Thunderstorm WarningILXMcLean, Woodford66 min
Jun 21, 6:51 PM CDTSevere Thunderstorm WarningILXShelby28 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.