Alert archive / Illinois / Tornado Warnings in 1990
Tornado Warning 30, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Aug 29, 1990, 2:40 AM CDT for DeWitt County, Macon County, Illinois. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Aug 29, 1990, 2:40 AM CDT (07:40 UTC)
- Expired
- Aug 29, 1990, 3:15 AM CDT
- In force
- 35 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties DeWitt County, IL, Macon 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, 7.7 hours before the alert went out and 328 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 290740
TORSPI
ILC039-115-290815-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
240 AM CDT WED AUG 29 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 315 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE CENTRAL PART OF ILLINOIS
DE WITT...MACON
AT 23SAM CDT SPOTTERS IN DEWITT COUNTY REPORTED AN UNCONFIRMED
FUNNEL CLOUD IN DEWITT COUNTY SOUTHWEST OF CLINTON. IT IS
ASSOCIATED WITH A BAND OF SEVERE THUNDERSTORMS THAT ARE MOVING
SOUTHEASTWARD AT 30 MPH THROUGH THESE COUNTIES.
FUNNEL CLOUDS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE
TO A PLACE OF SAFETY.
IF YOU ARE IN THE PATH OF A TORNADO...GO TO A BASEMENT SHELTER
IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDIN*G.
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.
ATTN ISP DIST...6...10
MUNDYThe 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, 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, 5:30 AM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Shelby | 60 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
Tornado Warnings in Illinois, 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.