Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 6, NWS Lincoln, IL

April 15, 1994Lee County, Ogle County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 15, 1994, 3:37 AM CDT for Lee County, Ogle County, Illinois. It was in force for 53 min.

The area

The counties it named.

The facts

Issued: Apr 15, 1994, 3:37 AM CDT (08:37 UTC)
Expired: Apr 15, 1994, 4:30 AM CDT
In force: 53 min
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Lee County, IL, Ogle County, IL

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 8.6 hours before the alert went out and 478 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2199 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 15, 12:27 AM CDT, 3 hours 10 minutes before

ILZ017-018-025>028-150625-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE PEORIA IL
1221 AM CDT FRI APR 15 1994

...SEVERE THUNDERSTORM WATCH UNTIL 5 AM CDT FOR PORTIONS OF WEST
CENTRAL ILLINOIS...

AT 1220 AM CDT...NO STORMS WERE OVER WEST CENTRAL ILLINOIS...HOWEVER...A
LINE OF VERY STRONG STORMS WAS APPROACHING THE MISSISSIPPI FROM 20
MILES WEST OF MOLINE TO NEAR KEOKUK IOWA.  MOVEMENT WAS NORTHEAST AT 45
MPH. THE STORMS WILL BE MOVING INTO THE WESTERN PORTIONS OF HANCOCK
AND HENDERSON COUNTIES BY 1 AM CDT.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV OR RADIO STATIONS FOR
POSSIBLE WARNINGS ON THESE STORMS.

IF YOU PLAN TO BE OUTDOORS...CHECK THE LATEST WEATHER INFORMATION.
HIGH WINDS...FREQUENT LIGHTNING AND HAIL MAY ACCOMPANY THESE STORMS.

STUMETZ
/TYPO/

Special weather statement, Apr 15, 1:22 AM CDT, 2 hours 15 minutes before

ILZ025-034-150725-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
120 AM CDT FRI APR 15 1994

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 5 AM CDT FOR PORTIONS
OF WEST CENTRAL ILLINOIS...

A LINE OF THUNDERSTORMS WAS FROM MOLINE EXTNDING SOUTHWEST TO KEOKUK
IOWA. MOVEMENT WAS NORTHEAST AT 45 MPH.  THE STRONGER STORMS WERE STILL
OVER EASTERN IOWA.  THE STORMS SEEM TO BE SKIRTING NORTHEAST TO JUST
WEST OF THE MISSISSIPPI RIVER AND HAVE NOT YET MOVED INTO WESTERN
ILLINOIS.

THE LINE OF THUNDERSTORMS ARE EXPECTED TO MOVE INTO HANCOCK AND
HENDERSON COUNTIES BY 2 AM.

STAY TUNDED TO NOAA WEATHER RADIO FOR POSSIBLE WARNINGS CONCERNING
THESE STORMS.

STUMETZ

AT SI>GNS OF AN IMPENDING STORM...MOVE TO A PLACE OF SAFETY.

Special weather statement, Apr 15, 1:25 AM CDT, 2 hours 12 minutes before

ILZ025-034-150725-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE PEORIA IL
120 AM CDT FRI APR 15 1994

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 5 AM CDT FOR PORTIONS
OF WEST CENTRAL ILLINOIS...

A LINE OF THUNDERSTORMS WAS FROM MOLINE EXTNDING SOUTHWEST TO KEOKUK
IOWA. MOVEMENT WAS NORTHEAST AT 45 MPH.  THE STRONGER STORMS WERE STILL
OVER EASTERN IOWA.  THE STORMS SEEM TO BE SKIRTING NORTHEAST TO JUST
WEST OF THE MISSISSIPPI RIVER AND HAVE NOT YET MOVED INTO WESTERN
ILLINOIS.

THE LINE OF THUNDERSTORMS ARE EXPECTED TO MOVE INTO HANCOCK AND
HENDERSON COUNTIES BY 2 AM.
STAY TUNDED TO NOAA WEATHER RADIO FOR POSSIBLE WARNINGS CONCERNING
THESE STORMS.

AT JSIGNS OF AN IMPENDING STORM...MOVE TO A PLACE OF SAFETY.

STUMETZ
/TYPO/

Special weather statement, Apr 15, 2:20 AM CDT, 1 hour 17 minutes before

ILZ025>027-034-150820-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
219 AM CDT FRI APR 15 1994

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 AM FOR PORTIONS
OF WEST CENTRAL ILLINOIS...

AT 220 AM...MOST THUNDERSTORMS WERE STILL ALONG THE MISSISSIPPI
RIVER...HOWEVER OTHER THUNDERSTORMS HAVE DEVELOPED OVER
WARREN...MCDONOUGH AND SCHUYLER CONTIES WITH THE STRONGEST STORMS WERE
5 MILES EAST OF BURLINGTON IOWA AND 10 MILES SOUTHEAST OF MACOMB.
MOVEMENT WAS NORTHEAST AT 45 MPH.

THE STONGER STORMS MAY BE CAPABLE OF PRODUCING DAMAGING WINDS...LARGE
HAIL...HEAVY RAINFALL AND FREQUENT LIGHTNING.

STAYED TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV OR RADIO STATIONS
FOR POSSIBLE WARNINGS CONCERNING THESE STORMS.

STUMETZ

Special weather statement, Apr 15, 2:56 AM CDT, 41 minutes before

ILZ017-018-025>031-034>038-040-041-150855-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
251 AM CDT FRI APR 15 1994

...TORNADO WATCH FOR ALL OF WEST CENTRAL ILLINOIS UNTIL 9 AM CDT...

AT 250 AM CDT...THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER WEST CENTRAL
ILLINOIS MAINLY BETWEEN THE MISSISSIPPI AND ILLINOIS RIVER.  THE
STRONGEST STORM WAS IN FULTON COUNTY NEAR LEWISTON.

THUNDERSTORMS WILL BE MOVING THROUGH ALL OF WEST CENTRAL ILLINOIS
DURING THE EARLY MORNING HOURS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES
AND SEVERE THUNDERSTORMS.  PERSONS IN THE WATCH AREA SHOULD BE ON THE
LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMEN6TS AD
POSSIBLE WARNINGS.

STUMETZ

Special weather statement, Apr 15, 3:06 AM CDT, 31 minutes before

ILZ042-047-048-050-051-059-150905-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
306 AM CDT FRI APR 15 1994

...A TORNADO WATCH IS IN EFFECT UNTIL 9 AM CDT FOR PORTIONS OF CENTRAL
ILLINOIS...

AT 3 AM CDT...WEATHER RADAR FROM SPRINGFIELD SHOWED A LINE OF STRONG
TO SEVERE THUNDERSTORMS EXTENDING FROM JUST EAST OF THE QUAD CITIES...TO
SOUTH OF QUINCY...AND WESTWARD TOWARD COLUMBIA MISSOURI.  THE STORMS ARE
MOVING TO THE EAST AT 45 MPH.

THE LINE OF THUNDERSTORMS SHOULD MOVE INTO CASS AND MORGAN COUNTIES BY
4 PM...AND REACH THE SPRINGFIELD AREA AROUND 5 AM.

THIS LINE OF THUNDERSTORMS HAS A HISTORY OF PRODUCING SEVERE WEATHER
WHILE TRAVELLING ACROSS IOWA...MISSOURI...AND FAR WESTERN ILLINOIS.
PEOPLE IN CENTRAL ILLINOIS SHOULD BE AWARE OF THE POTENTIAL OF
DANGEROUS WEATHER THIS MORNING.  MOVE TO THE BASEMENT OR AN INTERIOR
ROOM IF SEVERE WEATHER APPROACHES.

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 11:34 PM CDT	Severe Thunderstorm Warning	ILX	Carroll, Stephenson	41 min
Apr 15, 12:05 AM CDT	Severe Thunderstorm Warning	ILX	Winnebago	27 min
Apr 15, 3:13 AM CDT	Severe Thunderstorm Warning	ILX	Carroll	32 min
Apr 15, 4:01 AM CDT	Severe Thunderstorm Warning	ILX	Winnebago	34 min
Apr 15, 4:06 AM CDT	Severe Thunderstorm Warning	ILX	Menard	39 min
Apr 15, 4:39 AM CDT	Severe Thunderstorm Warning	ILX	Piatt	45 min
Apr 15, 4:39 AM CDT	Severe Thunderstorm Warning	ILX	Champaign	46 min
Apr 15, 4:59 AM CDT	Severe Thunderstorm Warning	ILX	McLean	61 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994 Every 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.