Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 85, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Aug 29, 1990, 5:30 AM CDT for Macon County, Moultrie County, Shelby County, Illinois. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Aug 29, 1990, 5:30 AM CDT (10:30 UTC)
- Expired
- Aug 29, 1990, 6:30 AM CDT
- In force
- 60 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Macon County, IL, Moultrie County, IL, Shelby County, IL
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
Paducah/Barkley, KY (KPAH), launched 00:00Z, 10.5 hours before the alert went out and 285 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
- 1355 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1963 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSPI 291030
SVRSPI
ILC115-173-139-291130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
530 AM CDT WED AUG 29 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 630 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE CENTRAL PART OF ILLINOIS
MACON...SHELBY...MOULTRIE
AT 520AM CDT RADAR INDICATED STRONG THUNDERSTORMS OVER SHELBY
COUNTY...JUST EAST OF SHELBYVILLE....AND OVER NORTHERN MACON
COUNTY...JUST NORTHWEST OF DECATUR.
SOME CITIES IN THE PATHS OF THESE STORMS ARE...
DECATUR...MOWEAQUA...FINDLAY...AND WINDSOR.
THESE STORMS ARE MOVING TO THE SOUTHEAST AT 35 MPH.
IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND DANGEROUS LIGHTNING.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.
ATTN ISP DIST...10
DBWhat 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, Aug 29, 1:48 AM CDT, 3 hours 42 minutes before
ILZ009-010-290745- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD ILLINOIS 145 AM CDT WED AUG 29 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR CENTRAL ILLINOIS UNTIL 7 AM CDT.. AT 135 AM CDT...RADAR INDICATED AN AREA THUNDERSTORMS OVER NORTH CENTRAL ILLINOIS...NORTH OF A LINE FROM 15 MILES SOUTH OF BURLINGTON IOWA EASTWARD TO 35 MILES NORTH OF SPRINGFIELD ONTO THE INDIANA BORDER. THESE STORMS HAVE PRODUCED LOCALLY HEAVY RAIN...STRONG GUSTY WINDS AND SOME HAIL AS WELL AS DANGEROUS LIGHTNING. BE ON THE LOOKOUT FOR CONTINUALLY CHANGING WEATHER AND FUTURE STATEMENTS...WATCHES OR WARNINGS. THE STORMS WILL BE ENTERING THE FOLLOWING COUNTIES WITHIN THE NEXT 30 MINUTESa TO AN HOUR...LOGAN...MENARD...CASS...DEWITT...CHAMPAIGN AND VERMILION COUNTIES. THE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH. ATTN ISP DISTS 9...6...10 MUNDY
Special weather statement, Aug 29, 2:58 AM CDT, 2 hours 32 minutes before
ILZ005-006-007-009-290900
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
300 AM CDT TUE AUG 29 1990
...SEVERE THUNDERSTORM WATCH UNTIL 7AM FOR CENTRAL ILLINOIS...
AT 255 AM CDT...AN AREA OF STRONG THUNDERSTORMS EXTENDED FROM DECATUR TO PEORIA
WEST TO 30 MILES SOUTH OF BURLINGTON IOWA. THE STRONGEST STORMS WERE IN A LINE
FROM DECATUR TO HAVANA. THESE STORMS CONTINUE TO MOVE TO THE SOUTHEAST AT
25 MPH. THE SEVERE THUNDERSTORM WA?RNINGS FOR PEORIA...MCLEAN...MASON...
TAZEWELL...KNOX AND FULTON HAVE EXPIRED.
SOME OF THESE THUNDERSTORMS MAY PRODUCE DAMAGING WINDS...HAIL...DANGEROUS
LIGHTNING AND HEAVY RAINS.
MOGGEDSpecial weather statement, Aug 29, 3:46 AM CDT, 1 hour 44 minutes before
ILZ005-006-007-009-290935 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 335 AM CDT TUE AUG 29 1990 ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL ILLINOIS TIL 7 AM... AT 330 AM CDT...RADAR INDICATED THAT MOST OF THE THUNDERSTORMS ACTIVITY HAD MOVED INTO SOUTH AND EAST CENTRAL ILLINOIS WITH THE STRONGEST STORMS NEAR HAVANA IN MCDONOUGH COUNTY AND NEAR SPRINGFIELD. THESE STORMS CONTINUE TO MOVE TOWARDS THE SOUTHEAST AT 35 MPH.t PORTIONS OF THE SEVERE THUNDERSTORM WATCH HAVE BEEN CANCELLED. THOSE COUNTIES ACROSS WEST CENTRAL ILLINOIS THAT ARE CANCELLED INCLUDE KNOX...WARREN...STARK...HENDERSON...BUREAU...PUTNAM AND MARSHALL. MOGGED
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 1:06 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria | 69 min |
| Aug 29, 1:33 AM CDT | Severe Thunderstorm Warning | ILX | Mason, Tazewell | 57 min |
| Aug 29, 1:57 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 63 min |
| Aug 29, 2:26 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon, Piatt | 64 min |
| Aug 29, 2:40 AM CDT | Tornado Warning | ILX | DeWitt, Macon | 35 min |
| Aug 29, 3:11 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, Douglas | 64 min |
| Aug 29, 3:11 AM CDT | Severe Thunderstorm Warning | ILX | Moultrie | 64 min |
| Aug 29, 3:20 AM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 55 min |
| Aug 29, 3:29 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Sangamon | 61 min |
| Aug 29, 3:29 AM CDT | Severe Thunderstorm Warning | ILX | Menard | 61 min |
| Aug 29, 4:18 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 57 min |
| Aug 29, 4:47 AM CDT | Severe Thunderstorm Warning | ILX | Hancock, McDonough | 58 min |
| Aug 29, 5:01 AM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 59 min |
| Aug 29, 5:23 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 67 min |
| Aug 29, 6:05 AM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 27 min |
| Aug 29, 6:34 AM CDT | Severe Thunderstorm Warning | ILX | McDonough, Schuyler | 26 min |
| Aug 29, 6:34 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason | 56 min |
| Aug 29, 7:28 AM CDT | Severe Thunderstorm Warning | ILX | Coles, Douglas | 32 min |
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; the sounding from the Mesonet's radiosonde archive.