Alert archive / Illinois / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 8, NWS Lincoln, IL

March 13, 1990Stephenson County, Winnebago County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 13, 1990, 3:29 PM CST for Stephenson County, Winnebago County, Illinois. It was in force for 31 min.

The area

The counties it named.

The facts

Issued: Mar 13, 1990, 3:29 PM CST (21:29 UTC)
Expired: Mar 13, 1990, 4:00 PM CST
In force: 31 min
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Stephenson County, IL, Winnebago 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.5 hours before the alert went out and 260 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1706 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 45 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 132129
SVRRFD
ILC177-201-132215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
329 PM CST TUE MAR 13 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 415 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTH CENTRAL PART OF ILLINOIS
      EASTERN STEPHENSON...WINNEBAGO

AT 325 CST THIS AFTERNOON THE ILLINOIS STATE POLICE REPORTED
GOLF BALL SIZE HAIL OVER FREEPORT ILLINOIS IN STEPHENSON
COUNTY. THIS STORM WAS MOVING EAST NORTHEAST AT 30 TO 40 MPH.

SOME COMMUNITIES AFFECTED BY THIS SEVERE THUNDERSTORM...
RIDOTT..PECATONICA..AND THE GREATER ROCKFORD METRO AREA.

IF YOU ARE IN AN AREA THREATENED BY THE STORM...GO TO A REINFORECED
SHELTER.  SEVERE THUNDERSTORMS CAN PRODUCE WINDS OF 60 MPH OR
GREATER...LARGE HAIL...DANGEROUS LIGHTNING AND HEAVY RAIN THAT
CAN QUICKLY FLOOD A LOW LYING AREA.

ATTN: ISP DIST  16                                      FIELDS

What 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, Mar 13, 12:41 PM CST, 2 hours 48 minutes before

ILZ005-006-007-009-132100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA, IL
1240 PM CST TUE MAR 13 1990

...HEAVY THUNDERSTORMS WERE OVER CENTRAL AND NORTHEAST ILLINOIS...

AT 1230 PM CST RADAR INDICATED SCATTERED THUNDERSTORMS FROM EAST
PEORIA ILLINOIS EXTENDING NORTHEAST INTO LASALLE COUNTY THEN INTO
GRUNDY COUNTY.  MOVEMENT WAS NORTHEAST AT 45 MPH.

SOME OF THE THUNDERSTORMS WILL BE ACCOMPANIED WITH BRIEF PERIODS OF
HEAVY RAINFALL...FREQUENT LIGHTNING AND HAIL.

AT 1205 PM THE PUBLIC REPORTED PEA SIZE HAIL IN EAST PEORIA ILLINOIS
ON ROUTE 150 AT THE...HIGHWAY VILLAGE.

THUNDERSTORMS AND SHOWERS WILL CONTINUE TO DEVELOPE AND MOVE THROUGH
PARTS OF ILLINOIS THIS AFTERNOON AND TONIGHT.
STUMETZ

Special weather statement, Mar 13, 1:35 PM CST, 1 hour 54 minutes before

ILZ005-006-007-009-132100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA, IL
135 PM CST TUE MAR 13 1990

SCATTERED SHOWERS AND THUNDERSTORMS...SOME STRONG WERE OVER PARTS OF
CENTRAL AND NORTHERN ILLINOIS.

AT 135 PM CST THE STRONGEST THUNDERSTORMS WERE IN MARSHALL COUNTY
NEAR WASHBURN AND LACON ILLINOIS AND IN LASALLE COUNTY JUST
NORTHEAST OF STREATOR ILLINOIS. MOVEMENT WAS NORTHEAST AT 45 MPH.

SOME OF THE STRONGER THUNDERSTORMS CAN1 BE ACCOMPANIED WITH BRIEF
PERIODS OF HEAVY RAINFALL...FREQUENT LIGHTNING...AND HAIL.

THUNDERSTORMS AND SHOWERS WILL CONTINUE TO DEVELOPE AND MOVE THROUGH
PARTS OF ILLINOIS THIS AFTERNOON AND TONIGHT.

STUMETZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 10:09 AM CST	Severe Thunderstorm Warning	ILX	Carroll, Ogle	46 min
Mar 13, 2:02 PM CST	Severe Thunderstorm Warning	ILX	Carroll	43 min
Mar 13, 2:30 PM CST	Severe Thunderstorm Warning	ILX	Stephenson	30 min
Mar 13, 3:51 PM CST	Severe Thunderstorm Warning	ILX	Stephenson	34 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1990 Every 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.