Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 61, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jun 29, 1990, 1:39 AM CDT for DeKalb County, Ogle County, Winnebago County, Illinois. It was in force for 51 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 29, 1990, 1:39 AM CDT (06:39 UTC)
- Expired
- Jun 29, 1990, 2:30 AM CDT
- In force
- 51 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties DeKalb County, IL, Ogle County, IL, Winnebago County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 1:40 AM CDT | Thunderstorm Wind 0 | Winnebago, IL | |
| Jun 29, 2:05 AM CDT | Thunderstorm Wind 0 | Ogle, IL | |
| Jun 29, 2:15 AM CDT | Thunderstorm Wind 0 | De Kalb, IL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 6.7 hours before the alert went out and 277 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
- 840 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRFD 290639
SVRRFD
ILC201-141-037-290730-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
139 AM CDT FRI JUN 29 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE NORTH CENTRAL PART OF ILLINOIS
SOUTHERN WINNEBAGO...EASTERN OGLE...NORTHERN DEKALB
AT 1 33 AM CDT...A SEVERE THUNDERSTORM WAS MOVING SOUTHEAST ACROSS
WINNEBAGO COUNTY. STRUCTURE DAMAGE WAS REPORTED AS WELL AS
TREES UPROOTED AND POWER LINES DOWN ALL ACORSS THE COUNTY. THE
THUNDERSTORM WAS MOVING TO THE SOUTHEAST AT 35 TO 40 MPH.
SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS SEVERE THUNDERSTORM...
BYRON...MONROE CENTER...ROCHELLE...GENOA...SYCAOMORE.
IF YOU ARE IN AN AREA THREATENED BY THE STORM...GO TO A REINFORECED
SHELTER. SEVERE THUNDERSTORMS CAN PRODUCE WINDS OF 60 MPH OR
GREATER...LARGE HAIL...DANGEROUS LIGHTNING AND HEAVY RAIN THAT
CAN QUICKLY FLOOD A LOW LYING AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING...SO BE ALERT!
ATTN: ISP DIST 1...16. 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, Jun 28, 8:11 PM CDT, 5 hours 28 minutes before
ILZ006-007-280045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 745 PM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST ILLINOIS IS CANCELLED... AT 7:50 PM... THUNDERSTORMS EXTENDED FROM GILMAN ILLINOIS...30 MILES SOUTH OF KANKAKEE TO EUREKA ILLINOIS NEAR PEORIA. THE STRONGEST THUNDERSTORMS ARE IN MCLEAN COUNTY AND WILL BE MOVING THROUGH BLOOMINGTON IN THE NEXT 20 MINUTES. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER. THE THUNDERSTORMS HAVE BEEN MOVING TO THE EAST-SOUTHEAST AT 35 MPH. THE STRONGER THUNDERSTORMS MAY PRODUCE GUSTY WINDS... ALONG WITH SOME VERY HEAVY RAIN. MOGGED
Special weather statement, Jun 28, 8:18 PM CDT, 5 hours 21 minutes before
ILZ010-290230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 820 PM CDT THU JUN 28 1990 ...STRONG THUNDERSTORMS MOVING INTO EAST CENTRAL ILLINOIS... AT 8 PM CDT WEATHER RADAR INDICATED AN AREA OF THUNDERSTORMS FROM FORD COUNTY...25 MILES NORTH OF CHAMPAIGN WEST TO NEAR BLOOMINGTON. THESE STORMS ARE MOVING SOUTHEAST AT 30 MPH. PERSONS IN NORTHERN CHAMPAIGN COUNTY CAN EXPECT VERY HEAVY DOWNPOURS.. STRONG GUSTY WINDS..DANGEROUS LIGHTNING AND POSSIBLE HAIL DURING THE NEXT TWO HOURS. PERSONS IN CHAMPAIGN URBANA WILL EXPERIENCE THESE STORMS AROND 9 PM CDT THIS EVENING. FENLEY ATTN ISP DIST...10
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 12:46 AM CDT | Severe Thunderstorm Warning | ILX | Stephenson, Winnebago | 44 min |
| Jun 29, 1:08 AM CDT | Severe Thunderstorm Warning | ILX | Boone | 67 min |
| Jun 29, 2:00 AM CDT | Severe Thunderstorm Warning | ILX | Carroll, Ogle | 45 min |
| Jun 29, 2:22 AM CDT | Severe Thunderstorm Warning | ILX | DeKalb, Lee | 53 min |
| Jun 29, 2:51 AM CDT | Severe Thunderstorm Warning | ILX | Bureau, Putnam | 69 min |
| Jun 29, 7:15 AM CDT | Flash Flood Warning | ILX | McLean, Peoria, Tazewell, Woodford | 2 hr |
| Jun 29, 9:20 AM CDT | Flash Flood Warning | ILX | McLean, Peoria, Tazewell, Woodford | 115 min |
| Jun 29, 11:15 AM CDT | Flash Flood Warning | ILX | McLean, Peoria, Tazewell, Woodford | 3 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 1990Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.