Alert archive / Illinois / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 39, NWS Lincoln, IL

August 8, 1988Stephenson County, Winnebago County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 8, 1988, 7:42 PM CDT for Stephenson County, Winnebago County, Illinois. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Aug 8, 1988, 7:42 PM CDT (00:42 UTC)
Expired
Aug 8, 1988, 8:30 PM CDT
In force
48 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Stephenson County, IL, Winnebago County, IL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 00:00Z, 0.7 hours before the alert went out and 187 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, Peoria Regional, IL at 00:00Z on 1988-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2160 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, Peoria Regional, IL at 00:00Z on 1988-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
2160 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1609 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
52 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 090042
SVRRFD
ILC177-203-090130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
742 PM CDT MON AUG 8 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF ILLINOIS
      EASTERN STEPHENSON...

   IN THE NORTH CENTRAL PART OF ILLINOIS
      WINNEBAGO...

AT 727 PM CDT THE STEPHENSON COUNTY SHERIFF DEPARTMENT
REPORTED SOME TREES AND POWER LINES DOWN IN FREEPORT ILLINOIS IN
CENTRAL STEPHENSON COUNTY IN NORTHERN ILLINOIS. RADAR INDICATED
THE STORMS WERE MOVING TO THE EAST AT 30 MPH.

SOME COMMUNITIES AFFECTED BY THIS SEVERE THUNDERSTORM...
PECATONICA AND ROCKFORD ILLINOIS IN WINNEBAGO COUNTY.

IF YOU ARE IN AN AREA THREATENED BY THE STORM... GO TO A REINFORECED
SHELTER.  SEVERE THUNDERSTORMS CAN PRODUCE WINDS OF 60 MPH OR
GREATER... LARGE HAIL... DANGEROUvS LIGHTNING AND HEAVY RAIN THAT
CAN QUICKLY FLOOD A LOW LYING AREA.

ATTN: ISP DIST  16                                      HELGERSON

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, Aug 8, 2:36 PM CDT, 5 hours 6 minutes before
.....HEAVY THUNDERSTORMS DEVELOPING OVER CENTRAL ILLINOIS.....

AT 230 PM CDT RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS FROM
ABOUT 10 MILES SOUTHWEST OF PEORIA TO ABOUT 40 MILES NORTHEAST
OF QUINCY.

THE HEAVIEST STORMS WERE LOCATED ALONG AND JUST NORTHWEST OF THE
ILLINOIS RIVER NEAR HAVANA TO ABOUT 20 MILES SOUTHWEST OF HAVANA.
THEY WERE MOVING EAST AT ABOUT 15 MPH.

HEAVY RAIN HAS BEEN REPORTED AT LEWISTOWN ABOUT 30 MILES SOUTHWEST
OF PEORIA.

THESE STORMS MAY PRODUCE LOCALLY HEAVY RAIN...GUSTY WINDS TO AROUND
35 MPH...DANGEROUS LIGHTNING AND SMALL HAIL.  THEY WILL BE MOVING
ACROSS MASON AND TAZEWELL COUNTIES BETWEEN 230PM AND 400 PM CDT.

ARMBRUST
Special weather statement, Aug 8, 3:29 PM CDT, 4 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
330 PM CDT MON AUG 8 1988

    ...STRONG THUNDERSTORMS OVER SOUTHERN MASON COUNTY...

AT 325 PM CDT...WEATHER SERVICE RADAR INDICATED A STRONG THUNDERSTORM
JUST NORTH OF CHANDLERVILLE...45 MILES SOUTHWEST OF PEORIA.  THIS
THUNDERSTORM IS MOVING EAST...NORTHEAST AT 15 MILES AN HOUR AND WILL
BE AFFECTING PERSONS IN KILBOURNE AND MASON CITY DURING THE NEXT HOUR.

HEAVY RAINS AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH THIS STORM.

OTHER WIDELY SCATTERED SHOWERS AND STORMS CONTINUED OVER PORTIONS OF
SOUTHERN PEORIA COUNTY...JUST SOUTH OF THE CITY OF PEORIA...AND BETWEEN
PEORIA AND QUINCY.

J LAST

ATTN ISP DIST...9
Special weather statement, Aug 8, 4:57 PM CDT, 2 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
455 PM CDT MON AUG 8 1988

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 900 PM FOR PORTIONS OF
WEST CENTRAL ILLINOIS...

AT 450 PM CDT...WEATHER RADAR INDICATED SCATTERED SHOWERS AND
THUNDERSTORMS OVER PORTIONS OF CENTRAL ILLINOIS.  A HEAVY STORM
WAS LOCATED NEAR CHANDLERVILLE...45 MILES SOUTHWEST OF PEORIA.
ANOTHER STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF BURLINGTON
IOWA...CROSSING THE MISSISSIPPI RIVER INTO SOUTHERN HENDERSON COUNTY
NEAR LOMAX AND DALLAS CITY ILLINOIS.  THE SHOWERS AND THUNDERSTORMS
ARE MOVING SLOWLY TO THE EAST AT 10 MILES AN HOUR.

HEAVY RAIN...DANGEROUS LIGHTNING...STRONG WINDS AND HAIL ARE POSSIBLE
IN THESE THUNDERSTORMS THROUGH THE EVENING HOURS.

REMEMBER...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF WEST
CENTRAL AND NORTHWEST ILLINOIS UNTIL 900 PM CDT.  PERSONS IN THESE
AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS
AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

J LAST
Special weather statement, Aug 8, 5:43 PM CDT, 1 hour 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
543 PM CDT MON AUG 8 1988

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM FOR
PORTIONS OF WEST CENTRAL ILLINOIS...

AT 540 PM CDT...WEATHER RADAR INDICATED SCATTERED SHOWERS AND
THUNDERSTORMS OVER PORTIONS OF CENTRAL ILLINOIS.  A HEAVY STORM
WAS LOCATED JUST SOUTHEAST OF MONMOUTH IN CENTRAL WARREN COUNTY...
50 MILES WEST OF PEORIA.  ANOTHER STORM WAS LOCATED 15 MILES SOUTHWEST
OF BURLINGTON IOWA...ON THE MISSISSIPPI RIVER...ENTERING SOUTHERN
HENDERSON COUNTY.

THE SHOWERS AND THUNDERSTORMS ARE MOVING TO THE EAST AT 15 MILES AN
HOUR.  DANGEROUS LIGHTNING...HEAVY RAINS...STRONG WINDS AND HAIL ARE
POSSIBLE IN THESE STORMS THROUGH THE EVENING HOURS.

REMEMBER...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF WEST
CENTRAL AND NORTHWEST ILLINOIS UNTIL 900 PM CDT.  PERSONS IN THESE
AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS
AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

J LAST
Special weather statement, Aug 8, 6:51 PM CDT, 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
650 PM CDT MON AUG 8 1988

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF NORTHERN
AND WEST CENTRAL ILLINOIS...

AT 645 PM CDT...WEATHER RADAR INDICATED SCATTERED SHOWERS AND
THUNDERSTORMS OVER PORTIONS OF CENTRAL ILLINOIS.  A LINE OF STRONG
THUNDERSTORMS EXTENDED FROM MOLINE ILLINOIS...SOUTHWEST TO BURLINGTON
IOWA OVER THE MISSISSIPPI RIVER.  THIS LINE OF THUNDERSTORMS WAS SLOWLY
MOVING EAST AT 15 MILES AN HOUR AND WILL BE AFFECTING THE COUNTIES OF
HENDERSON AND NORTHERN HANCOCK DURING THE NEXT COUPLE OF HOURS.

OTHER SHOWERS AND THUNDERSTORMS WERE LOCATED OVER SOUTHWEST KNOX
COUNTY...NEAR ABINGDON...45 MILES WEST OF PEORIA.

DANGEROUS LIGHTNING...HEAVY RAINS...STRONG WINDS AND HAIL ARE POSSIBLE
WITH THESE STORMS THROUGH THE EVENING HOURS.

REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM
FOR WEST CENTRAL AND NORTHERN ILLINOIS...AND UNTI)L MIDNIGHT FOR
NORTHEAST ILLINOIS.  PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT
FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

J LAST
Special weather statement, Aug 8, 7:41 PM CDT, 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
740 PM CDT MON AUG 8 1988

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF NORTHERN
AND WEST CENTRAL ILLINOIS...

AT 735 PM CDT...WEATHER RADAR INDICATED STRONG THUNDERSTORMS OVER
WESTERN KNOX COUNTY 10 MILES NORTHWEST OF GALESBURG...OR 45 MILES
WEST..NORTHWEST OF PEORIA.  OTHER SHOWERS AND THUNDERSTORMS CONTINUED
IN A LINE FROM 20 MILES EAST OF MOLINE ILLINOIS...SOUTHWEST TO 30 MILES
SOUTH OF BURLINGTON IOWA.  MOVEMENT OF THE SHOWERS AND STORMS WAS TO
THE EAST AT 15 MILES AN HOUR...ALTHOUGH THE SOUTHERN EXTENT OF THE
RAIN...SOUTH OF BURLINGTON...WAS NEARLY STATIONARY.

DANGEROUS LIGHTNING...HEAVY RAINS...AND STRONG WINDS TO 45 MILES AN
HOUR CAN BE EXPECTED WITH THE THUNDERSTORMS.

REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM
FOR WEST CENTRAL AND NORTHERN ILLINOIS...AND UNTIL MIDNIGHT FOR

NORTHEAST ILLINOIS.  PERSONS IN THESE AREAS SHuOULD BE ON THE LOOKOUT
FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

J LAST

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 7:42 PM CDTSevere Thunderstorm WarningILXWoodford48 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1988Every severe thunderstorm warning in 1988

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.