Alert archive / Illinois / Tornado Warnings in 1990

Tornado Warning 11, NWS Quad Cities, IA

June 2, 1990Rock Island County, Whiteside County, Illinois

NWS Quad Cities, IA issued this tornado warning at Jun 2, 1990, 3:31 PM CDT for Rock Island County, Whiteside County, Illinois. It was in force for 19 min.

The area

The counties it named.

The facts

Issued
Jun 2, 1990, 3:31 PM CDT (20:31 UTC)
Expired
Jun 2, 1990, 3:50 PM CDT
In force
19 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Rock Island County, IL, Whiteside 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, 8.5 hours before the alert went out and 363 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 1990-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 567 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 1990-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
567 J/kg
Mixed-layer CIN
-175 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLI 022031
TORMLI
ILC161-195-022100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE MOLINE IL
331 PM CDT SAT JUN 2 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 400 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF ILLINOIS
      NORTHERN ROCK-ISLAND...WESTERN WHITESIDE

AT  320 PM... A FUNNEL CLOUD WAS REPORTED BY ROCK ISLAND COUNTY
SHERIFF NEAR PORT BYRON.  THE STORM WAS MOVING NORTHEAST AT 40 MPH.

SOME CITIES/TOWNS IN THE PATH OF THIS STORM INCLUDE... PRINCETON...
CORDOVA

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.

IF TIME PERMITS..ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY
YOUR REPORT OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.

ATTN ISP 7 AND 1

LAGUE

What forecasters said that day

The local office's own words before this tornado 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, Jun 2, 12:15 PM CDT, 3 hours 16 minutes before
IAZ008-ILZ001-WIZ018-021830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
1205 PM CDT SAT JUN 02 1990

...TORNADO WATCH #373 IN EFFECT UNTIL 600 PM CDT...

A TORNADO WATCH FOR THE ENTIRE TRI-STATE AREA IS IN EFFECT UNTIL
600 PM CDT THIS EVENING.

THIS IS A PARTICULARLY DANGEROUS SITUATION WITH THE POSSIBILITY OF
VERY DAMAGING TORNADOES.  ALSO...LARGE HAIL...DANGEROUS LIGHTNING
AND DAMAGING THUNDERSTORM WINDS CAN BE EXPECTED.

A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND
SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON LTHE LOOKOUT FOR THREATENING
WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

=DEROY
Special weather statement, Jun 2, 1:12 PM CDT, 2 hours 19 minutes before
IAZ008-ILZ001-WIZ018-021900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
100 PM CDT SAT JUN 02 1990

...HIGH WINDS AROUND THE TRI-STATE...

HIGH WINDS SPEEDS IN EXCESS OF 50 MILES AN HOUR HAVE BEEN REPORTED
AROUND THE TRI-STATE...DELAWARE COUNTY AND JONES COUNTY BOTH HAVE
REPORTED TREES BEING BLOWN DOWN DUE TO THESE HIGH WINDS.

CAUTION IS URGED AS HIGH WINDS SWEEP ACROSS THE TRI-STATE.
FLYING DEBRIS COULD CAUSE INJURIES OR DAMWAGE.

DEROY
Special weather statement, Jun 2, 2:25 PM CDT, 1 hour 6 minutes before
IAZ008-ILZ001-WIZ018-022359-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
200 PM CDT SAT JUN 02 1990

...TORNADO WATCH CANCELLATION FOR THE TRI-STATE COUNTIES IN IOWA...

TORNADO WATCH #373 FOR THE FOLLOWING IOWA COUNTIES HAS BEEN
CANCELLED...CLAYTON...DELAWARE...DUBUQUE...JACKSON AND JONES.

TORNADO WATCH #373 FOR JO-DAVIES COUNTY IN ILLINOIS AND GRANT AND
LAFAYETTE COUNTIES IN WISCONSIN REMAIN IN EFFECT UNTIL 600 PM CDT.

HIGH WIND SPEEDS IN EXCESS OF 50 MILES AN HOUR ARE STILL  POSSIBLE IN
JO-DAVIES COUNTY AND GRANT AND LAFAYETTE COUNTIES.

CAUTION IS URGED AS HIGH WINDS SWEEP THE EASTERN AREAS OF THE TRI-
STATE.

DEROY
Special weather statement, Jun 2, 2:26 PM CDT, 1 hour 5 minutes before
IAZ008-ILZ001-WIZ018-022300-

SPECIAL WEATHER STATEMENT...CORRECTION FOR TIME...
NATIONAL WEATHER SERVICE DUBUQUE IA
200 PM CDT SAT JUN 02 1990

...TORNADO WATCH CANCELLATION FOR THE TRI-STATE COUNTIES IN IOWA...

TORNADO WATCH #373 FOR THE FOLLOWING IOWA COUNTIES HAS BEEN
CANCELLED...CLAYTON...DELAWARE...DUBUQUE...JACKSON AND JONES.

TORNADO WATCH #373 FOR JO-DAVIES COUNTY IN ILLINOIS AND GRANT AND
LAFAYETTE COUNTIES IN WISCONSIN REMAIN IN EFFECT UNTIL 600 PM CDT.

HIGH WIND SPEEDS IN EXCESS OF 50 MILES AN HOUR ARE STILL  POSSIBLE IN
JO-DAVIES COUNTY AND GRANT AND LAFAYETTE COUNTIES.

CAUTION IS URGED AS HIGH WINDS SWEEP THE EASTERN AREAS OF THE TRI-
STATE.

DEROY
Special weather statement, Jun 2, 3:21 PM CDT, 10 minutes before
IAZ008-ILZ001-WIZ018-022130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
310 PM CDT SAT JUN 02 1990

...TORNADO WATCH REMAINS IN EFFECT FOR JO-DAVIES COUNTY IN
NORTHWESTERN ILLINOIS AND GRANT AND LAFAYETTE COUNTIES IN
SOUTHWESTERN WISCONSIN...

TORNADO WATCH #373 REMAINS IN EFFECT FOR THE EASTERN AREA OF
THE TRI-STATES.

WEATHER RADAR INDICATED STRONG RAINSHOWERS ON THE EASTERN EDGE
OF JO-DAVIES COUNTY IN NORTHWESTERN ILLINOIS AND THE EASTERN
PORTION OF LAFAYETTE COUNTY IN SOUTHWESTERN WISCONSIN.

HIGH WINDS IN EXCESS OF 50 MILES AN HOUR ARE STILL POSSIBLE
AND PERSONS IN THE ABOVE MENTIONED COUNTIES ARE URGED TO TAKE
CAUTION.
DEROY

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.