Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 65, NWS Lincoln, IL

June 21, 1995Sangamon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 21, 1995, 8:45 PM CDT for Sangamon County, Illinois. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1995, 8:45 PM CDT (01:45 UTC)
Expired
Jun 21, 1995, 9:30 PM CDT
In force
45 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Sangamon County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 100 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 00:00Z on 1995-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2411 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, Lincoln, IL at 00:00Z on 1995-06-22The 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
2411 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSPI 220145 RRA
SVRSPI
ILC167-220230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SPRINGFIELD IL
845 PM CDT WED JUN 21 1995

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE CENTRAL PART OF ILLINOIS
      SANGAMON

SEVERE THUNDERSTORMS IN LOGAN COUNTY AT 840 PM WILL MOVE SOUTHWEST
INTO SANGAMON COUNTY. THE STRONGEST STORMS WERE LOCATED NEAR
ELKHART IN SOUTHWEST LOGAN COUNTY. THE STORMS WERE MOVING
SOUTHWEST AT 30 MPH.

THE STORMS SHOULD REACH WILLIAMSVILLE AROUND 9 PM...SHERMAN BY
910 PM...AND SPRINGFIELD AROUND 920 PM.

THESE STORMS HAVE A HISTORY OF PRODUCING WINDS IN EXCESS OF 60 MPH.
IF YOU ARE IN THE PATH OF THESE STORMS...MOVE TO A REINFORCED
SHELTER NOW.

$$
GEELHART

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:46 PM CDTSevere Thunderstorm WarningILXTazewell44 min
Jun 21, 7:57 PM CDTSevere Thunderstorm WarningILXLogan48 min
Jun 21, 8:19 PM CDTSevere Thunderstorm WarningILXMason56 min
Jun 21, 8:25 PM CDTSevere Thunderstorm WarningILXLogan, Menard50 min
Jun 21, 9:02 PM CDTSevere Thunderstorm WarningILXCass, Morgan58 min
Jun 21, 9:21 PM CDTSevere Thunderstorm WarningILXMenard39 min
Jun 21, 9:47 PM CDTSevere Thunderstorm WarningILXSchuyler28 min
Jun 21, 10:01 PM CDTSevere Thunderstorm WarningILXCass, Morgan15 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.