Alert archive / Illinois / Tornado Warnings in 1993

Tornado Warning 16, NWS Lincoln, IL

July 8, 1993Ogle County, Winnebago County, Illinois

NWS Lincoln, IL issued this tornado warning at Jul 8, 1993, 1:18 PM CDT for Ogle County, Winnebago County, Illinois. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jul 8, 1993, 1:18 PM CDT (18:18 UTC)
Expired
Jul 8, 1993, 2:00 PM CDT
In force
42 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Ogle County, IL, Winnebago County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.3 hours before the alert went out and 271 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.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 1993-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 1993-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMLI 081818
TORRFD
ILC201-141-081900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
ISSUED BY MOLINE IL
118 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 
COUNTIES

   IN THE EXTREME NORTH PART OF ILLINOIS
      EASTERN WINNEBAGO...EASTERN OGLE

AT 100 PM...A TORNADO TOUCHDOWN WAS REPORTED AT ASHTON IN LEE
COUNTY.  SOME COMMUNITIES IN THE PATH OF THIS TORNADO ARE CHANA...
ROCHELLE...AND ROCKFORD.

THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

LIBRIZZI/BOEHMKE

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 1:31 PM CDTTornado WarningILXBoone, DeKalb29 min
Jul 8, 1:34 PM CDTTornado WarningILXBoone, DeKalb41 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.