Alert archive / Illinois / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 21, NWS Lincoln, IL

April 18, 1992Hancock County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 18, 1992, 5:01 PM CDT for Hancock County, Illinois. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Apr 18, 1992, 5:01 PM CDT (22:01 UTC)
Expired
Apr 18, 1992, 5:45 PM CDT
In force
44 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Hancock County, IL

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.0 hours before the alert went out and 413 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, Topeka, KS at 12:00Z on 1992-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Topeka, KS at 12:00Z on 1992-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 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
574 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
182 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 KPIA 182201
SVRPIA
ILC067-182245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE PEORIA IL
501 PM CDT SAT APR 18 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE WEST CENTRAL PART OF ILLINOIS
      WEST CENTRAL AND NORTHWEST HANCOCK

AT 455 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE
MISSISSIPPI RIVER IN WEST CENTRAL HANCOCK COUNTY ILLINOIS. THE
STORM WAS MOVING NORTHEAST AT 40 MPH.

CITIES IN THE PATH OF THIS STORM IS...NAUVOO.

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND LIGHTNING.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.

INTENSE LIGHTNING IS REPORTED WITH THIS STORM.  IF OUTDOORS...
STAY AWAY FROM HIGH OBJECTS.  MOVE INDOOR IF POSSIBLE.  WHEN
INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES AND ELECTRICAL EQUIPMENT.

ATTN ISP 14

STUMETZ

Nearby

Severe Thunderstorm Warnings in Illinois, 1992Every severe thunderstorm warning in 1992

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.