Alert archive / Illinois / Tornado Warnings in 1993
Tornado Warning 17, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Jul 8, 1993, 1:31 PM CDT for Boone County, DeKalb County, Illinois. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1993, 1:31 PM CDT (18:31 UTC)
- Expired
- Jul 8, 1993, 2:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Boone County, IL, DeKalb County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.5 hours before the alert went out and 270 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
- 6 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHI 081834 RRA TORRFD ILC007-037-081900- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ROCKFORD IL ISSUED BY CHICAGO IL 131 PM CDT THU JUL 8 1993 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 200 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL ILLINOIS ...EASTERN BOONE COUNTY...DE KALB COUNTY AT 1 30 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM NEAR DEKALB TO BELVIDERE. AT 1 00 PM CDT A TORNADO WAS REPORTED AT ASHTON IN EASTERN LEE COUNTY ASSOCIATED WITH THESE THUNDERSTORMS. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS IN A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. GET AWAY FROM WINDOWS!
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 1:18 PM CDT | Tornado Warning | ILX | Ogle, Winnebago | 42 min |
| Jul 8, 1:34 PM CDT | Tornado Warning | ILX | Boone, DeKalb | 41 min |
Nearby
Tornado Warnings in Illinois, 1993Every tornado warning in 1993Tornadoes in 1993
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.