Alert archive / Indiana / Tornado Warnings in 1990
Tornado Warning 4, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Aug 28, 1990, 4:50 PM CDT for Lake County, Indiana. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- Aug 28, 1990, 4:50 PM CDT (21:50 UTC)
- Expired
- Aug 28, 1990, 5:15 PM CDT
- In force
- 25 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
County Lake County, IN
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
Dayton/James M C, OH (KDAY), launched 12:00Z, 9.8 hours before the alert went out and 320 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
- 1114 J/kg
- Mixed-layer CIN
- -266 J/kg
- Mixed-layer LCL
- 1466 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCHI 282150
TORCHI
INC089-282215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
450 PM CDT TUE AUG 28 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE NORTHWEST PART OF INDIANA
SOUTHWEST LAKE
AT 4 45PM CDT RADAR INDICATED A POSSIBLE TORNADO NEAR BEECHER...
ABOUT 20 MILES NORTHEAST OF KANKAKEE..'.JUST WEST OF THE INDIANA
BORDER.
THE STORM IS MOVING SOUTHEAST AND WILL ENTER SOUTHWEST LAKE COUNTY
INDIANA NEAR LOWELL...SHELBY AND SCHNEIDER.
SOMREKWhat 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, Aug 28, 1:08 PM CDT, 3 hours 42 minutes before
ILZ001-002-261810- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 105 PM CDT TUE AUG 28 1990 ...TUNDERSTORMS DEVELOP OVER EXTREMEM NORTHERN ILLINOIS... AT 1 PM A CLUSTER OF STRONG THUNDERSTORMS HAVE DEVELOPED RAPIDLY OVER EXTEREME NORTHERN ILLINOIS. THE STORMS WERE LOCATED NORTH OF A LINE FORM ORANGEVILLE TO DURAND TO ROCKTON NEAR THE ILLINOIS WISCONSIN BORDERS THEY WERE WERE MOVING TO THE EAST SOUTHEAST AT 30 MPH. BREIF HEAKVY RAINFALL STRONG GUSTY WINDS AND SMALL HAIL CAN BE EXPECTED WITH THESE STORMS. PERSONS NEAR THOSE AREAS SHOULD BE ON ALERRT FOR RAPIDLY CHANGING CONDITIONS. LIBRIZZI ATT:ISP...1..16..2
Special weather statement, Aug 28, 1:12 PM CDT, 3 hours 38 minutes before
ILZ001-002-281900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 105 PM CDT TUE AUG 28 1990 ...TUNDERSTORMS DEVELOP OVER EXTREME NORTHERN ILLINOIS... AT 1 PM A CLUSTER OF STRONG THUNDERSTORMS HAVE DEVELOPED RAPIDLY OVER EXTEREME NORTHERN ILLINOIS. THE STORMS WERE LOCATED NORTH OF A LINE FORM ORANGEVILLE TO DURAND TO ROCKTON NEAR THE ILLINOIS WISCONSIN BORDERS THEY WERE WERE MOVING TO THE EAST SOUTHEAST AT 30 MPH. BREIFV HEAVY RAINFALL STRONG GUSTY WINDS AND SMALL HAIL CAN BE EXPECTED WITH THESE STORMS. PERSONS NEAR THOSE AREAS SHOULD BE ON ALERRT FOR RAPIDLY CHANGING CONDITIONS. LIBRIZZI ATT:ISP...1..16..2
Special weather statement, Aug 28, 1:26 PM CDT, 3 hours 24 minutes before
ILZ001-002-281900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 125 PM CDT TUE AUG 28 1990 ...STRONG THUNDERSTORM OVER EXTREME NORTHERN ILLINOIS... AT 120 PM RADAR INDICATED A STRONG THUNDERSTORM JUST SOUTH OF DURAND ABOUT 20 MILES NORTHWEST OF THE CITY OF ROCKFORD MOVING TOWARDS THE EAST AT 30 MPH. THIS STORM WILL BRING BRIEF HEAVY RAINFALL ALONG WITH STRONG GUSTY WINDS AND SMALL HAIL. THE STORM WILL MOVE THROUGH THE NORTHERRN PORTIONS OF THE CITY OF ROCKFORD INTO BOONE COUNTY BY 2 PM . PERSONS IN OR NEAR NEAR THOSE AREAS SHOULD BE ON ALERT FOR RAPIDLY CHANGING CONDITIONS. LIBRIZZI ATT:ISP...1..16..2
Special weather statement, Aug 28, 2:01 PM CDT, 2 hours 49 minutes before
ILZ003-201200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 2 00 PM CDT TUE AUG 28 1990 A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED FOR NORTHERN ILLINOIS INCLUDING THE CHICAGO AREA FOR THIS AFTERNOON AND EARLY EVENING. A COLD FRONT MOVING SOUTH FROM WISCONSIN HAS FORCED THUNDERSTORMS TO DEVELOP IN SOUTHERN WISCONSIN AND NORTHERN ILLINOIS. AT 2 PM THE THUNDERSTORMS WERE LOCATED IN A LINE FROM JUST SOUTH OF MILWAUKEE TO JUST WEST OF ROCKFORD AND HAD ENTERED THE EXTREME NORTH AND NORTHEST PORTIONS OF THE CHICAGO SUBURBAN AREAS. THE LINE OF THUNDERSTORMS ARE SLIPPING SOUTHEAST AND WILL MOVE ACROSS THE CHICAGO AREA BETWEEN 2 AND 6 PM. SOME OF THE THUNDERSTORMS MAY BE SEVERE2 AND PRODUCE STRONG WINDS AND LARGE HAIL. BE ALERT FOR RAPIDLY CHANGING AND THREATENING WEATHER AND BE PREPARED TO SEEK SHELTER AS NECESSARY. SOMREK
Special weather statement, Aug 28, 4:13 PM CDT, 37 minutes before
ILZ001-002-282145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 410 PM CDT TUE AUG 28 1990 ...THUNDERSTORMS HAVE ALL MOVED INTO EASTERN PARTS OF ILLINOIS... THIS AFTERNOON AT 410 CDT ALL THUNDERSTORM ACTIVITY WAS WELL TO THE EAST AND SOUTHEAST OF NORTHWEST AND NORTH CENTRAL ILLINOIS. THEY WERE STILL MOVING TO THE SOUTHEAST. ELSEWHERE...ALL OF SOUTHERN WISCONSIN ALONG WITH THE NORTHWEST AND NORTH CENTRAL PORTIONS OF ILLINOIS WERE AGAIN PARTLY TO MOSTLY SUNNY. HOWEVER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF NORTHERN ILLINOIS EARLY THIS EVENING. THIS IS DUE TO A COLD FRONT ALONG THE ILLINOIS/WISCONSIN STATE LINE MOVING TO THE SOUTHEAST. THIS FRONT MAY PRODUCE ISOLATED THUNDERSTORMS...SOME STILL SEVERE...AS IT PASSES ON TO THE SOUTHEAST OF OUR AREA. . FIELDS ATTN: ISP 1..2..16
Nearby
Tornado Warnings in Indiana, 1990Every tornado warning in 1990Tornadoes in 1990
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.