Alert archive / Illinois / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 1, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Mar 23, 1994, 8:42 PM CST for Stephenson County, Winnebago County, Illinois. It was in force for 36 min.
The area
The counties it named.
The facts
- Issued
- Mar 23, 1994, 8:42 PM CST (02:42 UTC)
- Expired
- Mar 23, 1994, 9:18 PM CST
- In force
- 36 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Stephenson County, IL, Winnebago County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.7 hours before the alert went out and 260 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1121 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 529 m²/s²
- 0-3 km storm-relative helicity
- 1079 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRFD 240242
SVRRFD
ILC177-201-240330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
842 PM CST WED MAR 23 1994
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 930 PM CST FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE NORTH CENTRAL PART OF ILLINOIS
STEPHENSON...WINNEBAGO
AT 8 35 PM...A POSSIBLE SEVERE THUNDERSTORM WAS INDICATED ON RADAR
TO BE INTENSIFING NEAR SHANNON IN NORTHEAST CARROLL COUNTY. THE
STORM WAS MOVING NORTHEAST AT 45 MPH...AND COULD PRODUCE LARGE
HAIL AS IT MOVES SOUTH OF FREEPORT TOWARD THE ROCKFORD METRO AREA.
SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS SEVERE THUNDERSTORM...
FREEPORT...RIDOTT...PECATONICA...THE GREATER ROCKFORD METRO AREA...
ROCTON...ROSCOE
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!
SANDERSWhat 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, Mar 23, 7:05 PM CST, 1 hour 37 minutes before
ILZ037-041-240205- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 703 PM CST WED MAR 23 1994 ...STRONG THUNDERSTORMS DEVELOPING OVER THE AREA... AT 700 PM...STRONG THUNDERSTORMS WERE BEGINNING TO DEVELOP OVER NORTHERN MASON AND EASTERN TAZEWELL COUNTIES. THESE THUNDERSTORMS ARE MOVING TO THE NORTHEAST AT 15 TO 20 MPH AND WILL AFFECT THE TOWNS OF MACKINAW AND DELAVAN...IN TAZEWELL COUNTY...BY 730 PM. HIGH WINDS...FREQUENT LIGHTNING AND HAIL MAY ACCOMPANY THESE STORMS. WATERHOUSE
Special weather statement, Mar 23, 7:43 PM CST, 59 minutes before
ILZ0042>048-050>057-059>063-240245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 743 PM CST WED MAR 24 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1 AM CST... AT 740 PM CST...RADAR INDICATED STRONG THUNDERSTORMS OVER CENTRAL ILLINOIS. THE STRONGEST STORM WAS LOCATED 30 MILES SOUTH OF SPRINGFIELD...NEAR HILLSBORO AND MORRISONVILLE. ANOTHER STORM WAS LOCATED 25 MILES NORTHEAST OF SPRINGFIELD...NEAR LINCOLN. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 TO 40 MILES AN HOUR. MORE STORMS MAY DEVELOP OVER THE AREA LATER THIS EVENING...SO BE PREPARED FOR HEAVY RAIN...HAIL...DAMAGING WINDS AND DEADLY LIGHTNING WITH THE PASSAGE OF THESE STORMS. BYRD
Special weather statement, Mar 23, 7:51 PM CST, 51 minutes before
ILZ017-018-025>031-034>038-040-041-240300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 750 PM CST WED MAR 23 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL ILLINOIS UNTIL 100 AM THIS MORNING... AT 745 PM CST...ONLY LIGHT RAIN WAS DETECTED OVER PORTIONS OF WOODFORD COUNTY. THIS PRECIPITATION IS MOVING TO THE NORTHEAST AT 15 TO 20 MPH. ALTHOUGH THERE ARE PRESENTLY NO THUNDERSTORMS IN THE WATCH AREA... CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF THUNDERSTORMS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO AND T.V. STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS. WATERHOUSE
Special weather statement, Mar 23, 8:25 PM CST, 17 minutes before
ILZ0042>048-050>057-059>063-240300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 825 PM CST WED MAR 24 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1 AM CST... AT 800 PM CST...A SPOTTER IN MORRISONVILLE...29 MILES SOUTHEAST OF SPRINGFIELD REPORTED HALF INCH HAIL AND HEAVY RAIN. AT 820 PM CST...RADAR INDICATED A VERY STRONG THUNDERSTORM LOCATED 30 MILES SOUTHEAST OF SPRINGFIELD...JUST EAST OF MORRISONVILLE. ALSO ...ANOTHER STRONG STORM WAS LOCATED 20 MILES SOUTHWEST OF DECATUR... NEAR TAYLORVILLE. OTHER STORMS WERE LOCATED FROM JUST WEST OF CHAMPAIGN TO 25 MILES NORTHWEST OF CHAMPAIGN. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 TO 40 MPH. MORE STORMS MA&Y DEVELOP OVER THE AREA LATER THIS EVENING...SO BE PREPARED FOR HEAVY RAIN...HAIL...DAMAGING WINDS AND DEADLY LIGHTNING WITH THE PASSAGE OF THESE STORMS. BYRD
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 9:24 PM CST | Severe Thunderstorm Warning | ILX | Vermilion | 27 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.