Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 13, NWS Lincoln, IL

April 25, 1994Ogle County, Winnebago County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 25, 1994, 7:56 PM CDT for Ogle County, Winnebago County, Illinois. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1994, 7:56 PM CDT (00:56 UTC)
Expired
Apr 25, 1994, 8:45 PM CDT
In force
49 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Ogle County, IL, Winnebago County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.9 hours before the alert went out and 271 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 00:00Z on 1994-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 1994-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 287 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
508 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
287 m²/s²
0-3 km storm-relative helicity
406 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRFD 260056
SVRRFD
ILC201-141-260145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
756 PM CDT MON APR 25 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTH CENTRAL PART OF ILLINOIS
      WINNEBAGO...OGLE

AT 750 PM...A TRAINED WEATHER SPOTTER IN BYRON...15 MILES
SOUTHWEST OF ROCKFORD...REPORTED DIME SIZE HAIL ALONG WITH
HEAVY RAINS.  THESE STORMS ARE MOVING TO THE NORTHEAST AT 30
MPH.

SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS SEVERE THUNDERSTORM...
STILLMAN VALLEY IN OGLE COUNTY AND WINNEBAGO...ROCKFORD AND
NEW MILFORD IN WINNEBAGO COUNTY.

IF YOU ARE IN THE PATH OF THIS STORM...MOVE OUT OF AREAS THAT ARE
PRONE TO FLOODING AND TAKE SHELTER.  DAMAGING WINDS...LARGE HAIL
AND VERY HEAVY RAIN IS IMMINENT! REMEMBER...SEVERE THUNDERSTORMS
CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO WARNING!

BRONIARCZYK

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, Apr 25, 5:54 PM CDT, 2 hours 2 minutes before
ILZ025-026-034-035-040-260055-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
553 PM CDT MON APR 25 1994

...THUNDERSTORMS CONTINUE OVER WEST CENTRAL ILLINOIS...

AT 550 PM CDT...STRONG THUNDERSTORMS ARE CURRENTLY WEST OF A LINE FROM
SHANGHAI CITY...IN NORTHEAST WARREN COUNTY...TO SOUTHWEST OF RUSHVILLE
...IN SCHUYLER COUNTY.  THESE STORMS ARE MOVING NORTHEAST AT 30 MPH.

GUSTY WINDS...SMALL HAIL...AND LOCALLY HEAVY RAINFALL CAN BE |EXPECTED
OVER WESTERN ILLINOIS THROUGH THE REMAINDER OF THE EVENING.

BUCKINGHAM
Special weather statement, Apr 25, 6:38 PM CDT, 1 hour 18 minutes before
ILZ025>027-034>036-040-041-260140-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
635 PM CDT MON APR 25 1994

...STRONG THUNDERSTORMS OVER WEST CENTRAL ILLINOIS...

AT 635 PM CDT...STRONG THUNDERSTORMS ARE WEST OF A LINE FROM
ALTONA...IN KNOX COUNTY...TO LEWISTOWN...IN FULTON COUNTY...TO
CHANDLERVILLE...IN SCHUYLER COUNTY.  THESE STORMS ARE MOVING NORTHEAST
AT 30 MPH.

GUSTY WINDS...SMALL HAIL...AND LOCALLY HEAVY RAINFALL CAN BE EXPECTED
OVER WESTERN ILLINOIS FOR THE REMAINDER OF THE EVENING.  STAY TUNED
TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA NEWS SOURCE FOR CURRENT
INFORMATION.

BUCKINGHAM
Special weather statement, Apr 25, 7:44 PM CDT, 12 minutes before
ILZ047-050-260145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
742 PM CDT MON APR 25 1994

...STRONG THUNDERSTORMS WERE ALONG THE ILLINOIS RIVER...

AT 740 PM...SPRINGFIELD RADAR SHOWED A LINE OF STRONG THUNDERSTORMS
ALONG THE ILLINOIS RIVER...FROM ABOUT MIDWAY BETWEEN QUINCY AND
ST LOUIS...TO NEAR BEARDSTOWN.  THESE THUNDERSTORMS WERE MOVING
TO THE NORTHEAST AT 35 MPH AND WILL CONTINUE TO AFFECT AREAS ALONG
THE RIVER FOR THE NEXT HOUR OR TWO.

FREQUENT LIGHTNING...BRIEF DOWNPOURS OF RAIN...AND SOME SMALL HAIL
ARE ALL POSSIBLE WITH THESE STORMS.

GEELHART
Special weather statement, Apr 25, 7:49 PM CDT, 7 minutes before
ILZ025>027-029-034>036-040-041-260250-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
748 PM CDT MON APR 25 1994

...SHOWERS AND THUNDERSTORMS CONTINUE ACROSS WESTERN ILLINOIS...

AROUND MID EVENING...SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE
REGION...MAINLY WEST OF THE ILLINOIS RIVER.  THE STRONGEST THUNDERSTORM
WAS OCCURRING OVER SOUTHEASTERN MCDONOUGH COUNTY 50 MILES NORTHEAST OF
QUINCY.  ALL OF THE SHOWERS AND STORMS WERE MOVING TO THE NORTHEAST AT
AROUND 35 MPH AS THE ENTIRE AREA EXPANDS SLOWLY TO THE EAST.

RAINFALL WILL BEGIN IN THE PEORIA AREA DURING THE NEXT HOUR.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TELEVISION
STATION FOR FURTHER INFORMATION.

BREESER
Special weather statement, Apr 25, 7:51 PM CDT, 5 minutes before
ILZ025>027-029-034>036-040-041-260250-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PEORIA IL
748 PM CDT MON APR 25 1994

...SHOWERS AND THUNDERSTORMS CONTINUE ACROSS WESTERN ILLINOIS...

AROUND MID EVENING...SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE
REGION...MAINLY WEST OF THE ILLINOIS RIVER.  THE STRONGEST THUNDERSTORM
WAS OCCURRING OVER SOUTHEASTERN MCDONOUGH COUNTY 50 MILES NORTHEAST OF
QUINCY.  ALL OF THE SHOWERS AND STORMS WERE MOVING TO THE NORTHEAST AT
AROUND 35 MPH AS THE ENTIRE AREA EXPANDED SLOWLY TO THE EAST.

RAINFALL WILL BEGIN IN THE PEORIA AREA DURING THE NEXT HOUR.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TELEVISION
STATION FOR FURTHER INFORMATION.

BREESER

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 9:02 PM CDTSevere Thunderstorm WarningILXOgle43 min
Apr 26, 6:20 PM CDTSevere Thunderstorm WarningILXMcLean40 min
Apr 26, 6:35 PM CDTSevere Thunderstorm WarningILXMcLean55 min
Apr 26, 6:37 PM CDTSevere Thunderstorm WarningILXWoodford53 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994Every severe thunderstorm warning in 1994

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.