Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 28, NWS Lincoln, IL

May 18, 1995Logan County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 18, 1995, 12:24 PM CDT for Logan County, Illinois. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
May 18, 1995, 12:24 PM CDT (17:24 UTC)
Expired
May 18, 1995, 1:15 PM CDT
In force
51 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Logan County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.4 hours before the alert went out and 65 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 1995-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 1995-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 square meters per square second.1939587897117Sfc1 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
507 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
346 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSPI 181724
SVRSPI
ILC107-181815-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
1224 PM CDT THU MAY 18 1995
 
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL ILLINOIS
 
   ...LOGAN COUNTY
 
MARBLE SIZE HAIL WAS REPORTED AT LINCOLN BY NATIONAL WEATHER
SERVICE PERSONNEL AT 1220 PM CDTz. THE STORM WAS MOVIING EAST
NORTHEAST AT 30 MPH AND IS EXPECTED TO REACH ATLANTA BY 1240 PM.
 
 
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY!
$$
 
SKIPPER
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 11:16 AM CDTSevere Thunderstorm WarningILXMason44 min
May 18, 1:09 PM CDTSevere Thunderstorm WarningILXMcLean51 min
May 18, 2:31 PM CDTSevere Thunderstorm WarningILXChampaign33 min
May 18, 2:34 PM CDTSevere Thunderstorm WarningILXCumberland33 min
May 18, 2:55 PM CDTFlash Flood WarningILXMacon4 hr

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.