Alert archive / Illinois / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 28, NWS Lincoln, IL

June 17, 1992Winnebago County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 17, 1992, 12:56 PM CDT for Winnebago County, Illinois. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1992, 12:56 PM CDT (17:56 UTC)
Expired
Jun 17, 1992, 1:45 PM CDT
In force
49 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Winnebago County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.9 hours before the alert went out and 253 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, Green Bay/Straub, WI at 12:00Z on 1992-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 475 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, Green Bay/Straub, WI at 12:00Z on 1992-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 292 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
475 J/kg
Mixed-layer CIN
-301 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
292 m²/s²
0-3 km storm-relative helicity
272 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 KRFD 171756
SVRRFD
ILC201-171845-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
1256 PM CDT WED JUN 17 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 145 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTH CENTRAL PART OF ILLINOIS
      WINNEBAGO

AT 1255 CDT THIS AFTERNOON AN INTENSFYING THUNDERSTORM WAS JUST
WEST AND NORTHWEST OF THE AIRPORT. THIS STORM WILL PRODUCE LARGE
HAIL AND WINDS GUSTING IN EXCESS OF 60 MPH.

SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS SEVERE THUNDERSTORM...
ROCKFORD...LOVES PARK...MACHESNEY PARK...ROCKTON...AND ROSCOE.

IF YOU ARE IN AN AREA THREATENED BY THE STORM...MOVE OUT OF AREAS
THAT ARE PRONE TO FLOODING...AND GO TO A REINFORCED SHELTER!
DAMAGING WINDS...LARGE HAIL...DANGEROUS LIGHTNING...AND HEAVY
RAINFALL THAT CAN QUICKLY FLOOD A LOW LYING AREA IS IMMINENT!
REMEMBER ALSO...SEVERE THUNDERSTORMS CAN AND DO PRODUCE TORNADOES
WITH LITTLE OR NO WARNING...SO BE ALERT!

ATTN: ISP DIST 1...2...16.                   FIELDS

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 17, 9:07 AM CDT, 3 hours 49 minutes before
ILZ005>007-009-171630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
900 AM CDT WED JUN 17 1992

...THUNDERSTORM DEVELOPMENT OVER CENTRAL ILLINOIS...

AT 9AM CDT...A LONE THUNDERSTORM HAD DEVELOPED OVER EASTERN SCHUYLER
COUNTY 45 MILES NORTHWEST OF SPRINGFIELD. ELSWHERE MOSTLY CLOUDY SKIES
AND WINDY CONDITIONS PREVAILED WITH ONLY A FEW WIDELY SCATTERED LIGHT
RAIN SHOWERS.

HOWEVER...TO
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS...AND LISTEN TO
RADIO...TV...OR NOAA WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...
AND STATEMENTS. IN THE MEANTIME...REVIEW SEVERE WEATHER SAFETY RULES.
COUNTY EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD PREPARE TO ACTIVATE
THIS AFTERNOON AND INTO THIS EVENING.

MILLER
Special weather statement, Jun 17, 9:10 AM CDT, 3 hours 46 minutes before
ILZ005>007-009-171630-

SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE PEORIA IL
900 AM CDT WED JUN 17 1992

...THUNDERSTORM DEVELOPMENT OVER CENTRAL ILLINOIS...

AT 9AM CDT...A LONE THUNDERSTORM HAD DEVELOPED OVER EASTERN SCHUYLER
COUNTY 45 MILES NORTHWEST OF SPRINGFIELD. ELSWHERE MOSTLY CLOUDY SKIES
AND WINDY CONDITIONS PREVAILED WITH ONLY A FEW WIDELY SCATTERED LIGHT
RAIN SHOWERS.

HOWEVER...A HIGH RISK OF SEVERE WEATHER REMAINS FOR ALL OF THE HEART OF
ILLINOIS TODAY. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS...LISTEN TO
RADIO...TV...OR NOAA WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...
AND STATEMENTS. IN THE MEANTIME...REVIEW SEVERE WEATHER SAFETY RULES.
COUNTY EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD PREPARE TO ACTIVATE
THIS AFTERNOON AND INTO THIS EVENING.

BREESER
Special weather statement, Jun 17, 11:40 AM CDT, 1 hour 16 minutes before
ILZ005>007-009-171630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
900 AM CDT WED JUN 17 1992

...THUNDERSTORM DEVELOPING AND MOING TOWARD WESTERN ILLINOIS...

AT 1130 AM CDT...STRONG THUNDERSTORMS WERE RAPIDLY DEVELOPING IN
SOUTHEASTERN IOWA AND NORTHEASTERN MISSOURI. THESE STORMS WERE INTENSIFYING
RAPIDLY AND MOVING NORTH NORTHEAST AT 40 MPH. THESE STORMS WILL MOVE INTO
HANCOCK AND HENDERSON COUNTIES IN EXTREME WESTERN ILLINOIS WITHIN THE NEXT
1/2 HOUR.

A TORNADO WATCH IS IN EFFECT FOR A GREAT PORTION OF THE HEART OF ILLINOIS
UNTIL 8 PM THIS EVENING. PERSONS SHOULD REMAIN ALERT TO RAPIDLY CHANGING
WEATHER CONDITIONS...LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR
POwSSIBLE WARNINGS...AND STATEMENTS.

BREESER
Special weather statement, Jun 17, 11:46 AM CDT, 1 hour 10 minutes before
ILZ005>007-009-171730-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE PEORIA IL
1135 AM CDT WED JUN 17 1992

...THUNDERSTORM DEVELOPING AND MOVING TOWARD WESTERN ILLINOIS...

AT 1130 AM CDT...STRONG THUNDERSTORMS WERE RAPIDLY DEVELOPING IN
SOUTHEASTERN IOWA AND NORTHEASTERN MISSOURI. THESE STORMS WERE INTENSIFYING
RAPIDLY AND MOVING NORTH NORTHEAST AT 40 MPH. THESE STORMS WILL MOVE INTO
HANCOCK AND HENDERSON COUNTIES IN EXTREME WESTERN ILLINOIS WITHIN THE NEXT
1/2 HOUR.

A TORNADO WATCH IS IN EFFECT FOR A GREAT PORTION OF THE HEART OF ILLINOIS
UNTIL 8 PM THIS EVENING. PERSONS SHOULD REMAIN ALERT TO RAPIDLY CHANGING
WEATHER CONDITIONS...LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR
POSSIBLE WARNINGS...AND STATEMENTS.

BREESER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 12:14 PM CDTSevere Thunderstorm WarningILXHenderson61 min
Jun 17, 12:23 PM CDTSevere Thunderstorm WarningILXCarroll52 min
Jun 17, 12:57 PM CDTSevere Thunderstorm WarningILXWarren63 min
Jun 17, 1:21 PM CDTTornado WarningILXHenderson39 min
Jun 17, 1:21 PM CDTTornado WarningILXHancock, McDonough69 min
Jun 17, 1:21 PM CDTTornado WarningILXWarren69 min
Jun 17, 1:24 PM CDTSevere Thunderstorm WarningILXLee, Ogle51 min
Jun 17, 1:24 PM CDTSevere Thunderstorm WarningILXBoone, Winnebago51 min
Jun 17, 1:45 PM CDTTornado WarningILXSchuyler60 min
Jun 17, 1:47 PM CDTSevere Thunderstorm WarningILXBureau43 min
Jun 17, 2:24 PM CDTSevere Thunderstorm WarningILXDeKalb, Lee, Ogle21 min
Jun 17, 2:46 PM CDTSevere Thunderstorm WarningILXMarshall, Putnam59 min
Jun 17, 2:49 PM CDTSevere Thunderstorm WarningILXFulton, Schuyler41 min
Jun 17, 3:14 PM CDTSevere Thunderstorm WarningILXMason, Tazewell61 min
Jun 17, 3:49 PM CDTSevere Thunderstorm WarningILXMcLean, Woodford56 min
Jun 17, 4:07 PM CDTSevere Thunderstorm WarningILXMacoupin68 min
Jun 17, 4:07 PM CDTSevere Thunderstorm WarningILXChristian68 min
Jun 17, 4:30 PM CDTSevere Thunderstorm WarningILXMacon45 min
Jun 17, 5:10 PM CDTSevere Thunderstorm WarningILXDouglas50 min

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.