Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 39, NWS Lincoln, IL

June 14, 1994DeKalb County, Ogle County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 14, 1994, 2:27 AM CDT for DeKalb County, Ogle County, Illinois. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jun 14, 1994, 2:27 AM CDT (07:27 UTC)
Expired
Jun 14, 1994, 3:15 AM CDT
In force
48 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties DeKalb County, IL, Ogle County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.5 hours before the alert went out and 290 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 00:00Z on 1994-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1994-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
951 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
119 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 KRFD 140727 RRA
SVRRFD
ILC141-037-140815-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
227 AM CDT TUE JUN 14 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 315 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTH CENTRAL PART OF ILLINOIS
      EASTERN OGLE...DEKALB

AT 220 AM A SEVERE THUNDERSTORM PRODUCING WIND GUSTS TO 70 MPH
WAS LOCATED  IN SOUTHERN OGLE COUNTY MOVING TOWARDS ROCHELLE
NUMEROUS REPORTS TREES BLOWN DOWN BY THIS STORM IN OGLE COUNTY.

SOME COMMUNITIES THAT WILL BE AFFECTED BY THIS SEVERE THUNDERSTORM...
ROCHELLE...MALTA...SHABBONNA...WATERMAN...

IF YOU ARE IN THE PATH OF THIS STORM...MOVE OUT OF AREAS THAT ARE
PRONE TO FLOODING AND TAKE SHELTER.  DAMAGING WINDS...LARGE HAIL
AND VERY HEAVY RAIN IS IMMINENT! REMEMBER...SEVERE THUNDERSTORMS
CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO WARNING!

LIBRIZZI

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 1:44 AM CDTSevere Thunderstorm WarningILXCarroll, Ogle46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994Every severe thunderstorm warning in 1994

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.