Alert archive / Illinois / Tornado Warnings in 1991
Tornado Warning 27, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Jun 1, 1991, 9:14 PM CDT for DeKalb County, Illinois. It was in force for 31 min.
The area
The counties it named.
The facts
- Issued
- Jun 1, 1991, 9:14 PM CDT (02:14 UTC)
- Expired
- Jun 1, 1991, 9:45 PM CDT
- In force
- 31 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County DeKalb County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.2 hours before the alert went out and 293 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
- 322 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRFD 020221 COR
TORRFD
BULLETIN-EBS ACTIVATION REQUESTED
TORNADO WARNING CORRECTED
NATIONAL WEATHER SERVICE ROCKFORD, IL
920 PM CDT SAT JUN 01 1991
ILC037-020245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
914 PM CDT SAT JUN 1 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE NORTH CENTRAL PART OF ILLINOIS
SOUTHERN DEKALB
AT 9 10 PM CDT...A FUNNEL CLOUD WAS SIGHTED BY FIRE DEPARTMENT
PERSONAL IN SHABBONA...ABOUT 35 MILES SOUTHEAST OF ROCKFORD.
RADAR ALSO INDICATED A POSSIBLE TORNADO DEVELOPING IN THAT SAME
AREA. THIS STORM WAS MOVING TO THE SOUTHEAST AT 25 TO 30 MPH.
SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS TORNADO...
HINCKLEY...SANDWHICH.
PERSONS IN THE PATH OF THIS DANGEROUS STORM TAKE COVER IMMEDIATELY
IN A BASEMENT OR SMALL CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR.
ABANDON CARS... FARM MACHINERY AND MOBILE HOMES FOR REINFORCED
BUILDING. IF OUT-OF-DOORS GO TO A REINFORCED SHELTER OR DITCH...
CULVERT OR RAVINE. THIS IS A SERIOUS SITUATION... YOUR LIFE MAY
DEPEND ON HOW QUICKLY YOU RESPOND TO THIS TORNADO WARNING!
ATTN: ISP DIST 2. SANDERS
...SLIGHT CORRECTION TO TEXT...What forecasters said that day
The local office's own words before this tornado 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 1, 8:27 PM CDT, 47 minutes before
ILZ005-006-007-009-020230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 830 PM CDT SAT JUN 1 1991 ...THUNDERSTORMS IN CENTRAL ILLINOIS... AT 810 PM RADAR INDICATED THE DEVELOPEMENT OF SHOWERS AND THUNDERSTORMS IN STARK MARSHALL AND PUTNAM COUNTIES...20 MILES NORTH OF PEORIA. THESE SHOWERS WERE INCREASING IN INTENSITY AND WERE MOVING TO THE SOUTHEAST AT AROUND 15 MPH. BRIEF HEAVY RAIN COULD BE ASSOCIATED WITH THESE SHOWERS AND kPONDING OF WATER IN LOW LYING AREAS IS POSSIBLE. BREESER
Nearby
Tornado Warnings in Illinois, 1991Every tornado warning in 1991Tornadoes in 1991
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.