Alert archive / Iowa / Tornado Warnings in 1992

Tornado Warning 1, NWS Quad Cities, IA

June 17, 1992Clinton County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 17, 1992, 12:35 PM CDT for Clinton County, Iowa. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1992, 12:35 PM CDT (17:35 UTC)
Expired
Jun 17, 1992, 1:00 PM CDT
In force
25 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Clinton County, IA

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.6 hours before the alert went out and 348 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 1992-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 475 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 1992-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 292 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
475 J/kg
Mixed-layer CIN
-301 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
292 m²/s²
0-3 km storm-relative helicity
272 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 171735
TORMLI
IAC045-171800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE MOLINE IL
1235 PM CDT WED JUN 17 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 100 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE EXTREME EAST PART OF IOWA
      EASTERN CLINTON

AT 1230 PM...SPOTTERS REPORTED A FUNNEL CLOUD NEAR LOW MOOR IOWA...
MOVING NORTHEAST TOWARD CLINTON IOWA.

IF YOUR LIVE IN CLINTON OR SURROUNDING COMMUNITIES...TAKE SHELTER
NOW!!

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.

REPORTS OF TORNADOES OR TORNADO DAMAGE SHOULD BE GIVEN TO A LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...TAKE SHELTER IN A CULVERT...DITCH...
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

COOPER/MEYER

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 17, 10:37 AM CDT, 1 hour 58 minutes before
IAZ008-ILZ001-WIZ018-171645-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
1037 AM CDT WED JUN 17 1992

AT 1035 AM CDT...RADAR INDICATED A STRONG THUNDERSTORM LOCATED NEAR
THE CITY OF FAIRPLAY IN GRANT COUNTY WISCONSIN OR ABOUT 5 MILES
NORTHEAST OF THE CITY OF DUBUQUE.  THE STORM WAS PRODUCING...SMALL HAIL
...BRIEF HEAVY RAINS AND DEADLY LIGHTNING AS WELL AS STRONG WINDS.

OTHERWISE...ANOTHER DEVELOPING STORM WAS LOCATED IN SOUTHEASTERN
JONES COUNTY NEAR THE CITY OF OXFORD JUNCTION OR 40 MILES SOUTHWEST
OF THE CITY OF DUBUQE.

THE STORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR.

SMALL HAIL...BRIEF HEAVY RAINS...DEADLY LIGHTNING...AND STRONG
WINDS CAN BE EXPECTED WITH THESE STORMS.

PERSONS IN SOUTHWESTERN GRANT COUNTY...IN OR NEAR THE CITIES OF
GEORGETOWN AND PLATTEVILLE AND PERSONS IN LAFAYETTE COUNTY NEAR
LESLIE AND ELK GROVE SHOULD BE ALERT FOR THIS STORM AS IT APPROACHES.

PERSONS IN JACKSON AND JO-DAVIES COUNTIES FROM MONMOUTH NORTHEAST
THROUGH BELLVUE AND FROM BLANDING THROUGH WARREN SHOULD BE ALERT
FOR THIS STORM AS IT APPROACHES.  MOVE INDOORS FOR SAFETY AND
BE PREPARED TO TAKE QUICK ACTION SHOULD THESE STORMS BECOME SEVERE.

DEROY

 h

NNNN
Special weather statement, Jun 17, 10:49 AM CDT, 1 hour 46 minutes before
ILZ004-IAZ015-171645-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOLINE IL
1045 AM CDT WED JUN 17 1992

THUNDERSTORMS HAD RAPIDLY DEVELOPED ACROSS EAST IOWA THIS MORNING.

AT 1040 AM CDT A LINE OF THUNDERSTORMS EXTENDED FROM 15 MILES SOUTH OF
DUBUQUE IOWA...TO TIPTON IOWA...EXTENDING TO THE SOUTHWEST NEAR
CONESVILLE IOWA.  THIS LINE OF THUNDERSTORMS WAS 40 MILES NORTHWEST OF
THE QUAD CITIES...MOVING EAST AT 30 MILES AN HOUR.

THESE LATE MORNING THUNDERSTORMS WILL MOVE INTO VERY MOIST...UNSTABLE
AIR AS THEY MOVE TO THE EAST.  THESE CONDITIONS ARE FAVERABLE FOR RAPID
AND STRONG THUNDERSTORM DEVELOPMENT.  IF YOU LIVE IN THE PATH OF THESE
APPROACHING THUNDERSTORMS...BE ON THE LOOKOUT FOR RAPIDLY CHANGING
WEATHER CONDITIONS AND BE PREPARED TO MOVE INDOORS TO A PLACE OF SAFETY
AS THUNDERSTORMS APPROACH.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING DEADLY LIGHTNING...
HEAVY RAIN AND GUSTY WINDS.  THE CITIES AND COMMUNITIES OF DEWITT
IOWA...MUSCATINE IOWA...AND THE QUAD CITIES CAN EXPECT THE ARRIVAL OF
THUNDERSTORMS BETWEEN 1115 AM AND 1145 AM CDT.

MEYER
Special weather statement, Jun 17, 11:27 AM CDT, 1 hour 8 minutes before
IAZ008-ILZ001-WIZ018-171730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
1127 AM CDT WED JUN 17 1992

...TORNADO WATCH IN EFFECT FOR BOTH JO-DAVIES IN NORTHWEST ILLINOIS
AND LAFAYETTE COUNTY IN SOUTHWEST ILLINOIS...

AT 1125 AM CDT...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
LOCATED FROM THE CITY OF SPRAGUEVILLE IN JACKSON COUNTY 35 MILES
SOUTHEAST OF THE CITY OF DUBUQUE NORTHEAST THROUGH CENTRAL JO-DAVIES
COUNTY AND THROUGH THE CITY OF FAYETTE IN LAFAYETTE COUNTY 35 MILES
TO THE NORTHEAST OF DUBUQUE.

THE STRONGEST OF THE STORMS WERE LOCATED NEAR SPRAGUEVILLE IN JACKSON
COUNTY...WOODBINE IN JO-DAVIES COUNTY...AND FAYETTE IN LAFAYETTE COUNTY.
ALL ABOUT 35 MILES SOUTHEAST TO NORTHEAST OF THE CITY OF DUBUQE.  THE
STORMS WERE PRODUCING SMALL HAIL...BRIEF HEAVY RAINS AND DEADLY LIGHTNINAS WELL AS STRONG AND GUSTY WINDS.  THE STORMS WERE MOVING NORTHEAST AT
35 MILES AN HOUR.

PERSONS IN SOUTHEASTERN JACKSON COUNTY...CENTRAL AND EASTERN JO-DAVIES
COUNTY AND CENTRAL AND EASTERN LAFAYETTE COUNTY SHOULD BE ALERT FOR
THESE THUNDERSTORMS AS THEY APPROACH AND BE PREPARED TO TAKE COVER
SHOULD ANY OF THESE STORMS BECOME SEVERE.

DEROY

 

NNNN
Special weather statement, Jun 17, 11:31 AM CDT, 1 hour 4 minutes before
IAZ008-ILZ001-WIZ018-171730-

SPECIAL WEATHER STATEMENT...CORRECTED...
NATIONAL WEATHER SERVICE DUBUQUE IA
1127 AM CDT WED JUN 17 1992

...TORNADO WATCH IN EFFECT FOR BOTH JO-DAVIES IN NORTHWEST ILLINOIS
AND LAFAYETTE COUNTY IN SOUTHWEST ILLINOIS...

AT 1125 AM CDT...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
LOCATED FROM THE CITY OF SPRAGUEVILLE IN JACKSON COUNTY 35 MILES
SOUTHEAST OF THE CITY OF DUBUQUE NORTHEAST THROUGH CENTRAL JO-DAVIES
COUNTY AND THROUGH THE CITY OF FAYETTE IN LAFAYETTE COUNTY 35 MILES
TO THE NORTHEAST OF DUBUQUE.

THE STRONGEST OF THE STORMS WERE LOCATED NEAR SPRAGUEVILLE IN JACKSON
COUNTY...WOODBINE IN JO-DAVIES COUNTY...AND FAYETTE IN LAFAYETTE COUNTY.
ALL ABOUT 35 MILES SOUTHEAST TO NORTHEAST OF THE CITY OF DUBUQE.  THE
STORMS WERE PRODUCING SMALL HAIL...BRIEF HEAVY RAINS AND DEADLY
LIGHTNING WELL AS STRONG AND GUSTY WINDS. THE STORMS WERE MOVING
NORTHEAST AT 35 MILES AN HOUR.

PERSONS IN SOUTHEASTERN -JACKSON COUNTY...CENTRAL AND EASTERN JO-DAVIES
COUNTY AND CENTRAL AND EASTERN LAFAYETTE COUNTY SHOULD BE ALERT FOR
THESE THUNDERSTORMS AS THEY APPROACH AND BE PREPARED TO TAKE COVER
SHOULD ANY OF THESE STORMS BECOME SEVERE.

DEROY
Special weather statement, Jun 17, 11:35 AM CDT, 1 hour before
IAZ008-ILZ001-WIZ018-171730-

SPECIAL WEATHER STATEMENT...CORRECTED...FOR LAFAYETTE COUNTY...
NATIONAL WEATHER SERVICE DUBUQUE IA
1134 AM CDT WED JUN 17 1992

...TORNADO WATCH IN EFFECT FOR BOTH JO-DAVIES IN NORTHWEST ILLINOIS
AND LAFAYETTE COUNTY IN SOUTHWEST WISCONSIN...

AT 1125 AM CDT...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
LOCATED FROM THE CITY OF SPRAGUEVILLE IN JACKSON COUNTY 35 MILES
SOUTHEAST OF THE CITY OF DUBUQUE NORTHEAST THROUGH CENTRAL JO-DAVIES
COUNTY AND THROUGH THE CITY OF FAYETTE IN LAFAYETTE COUNTY 35 MILES
TO THE NORTHEAST OF DUBUQUE.

THE STRONGEST OF THE STORMS WERE LOCATED NEAR SPRAGUEVILLE IN JACKSON
COUNTY...WOODBINE IN JO-DAVIES COUNTY...AND FAYETTE IN LAFAYETTE COUNTY.
ALL ABOUT 35 MILES SOUTHEAST TO NORTHEAST OF THE CITY OF DUBUQE.  THE
STORMS WERE PRODUCING SMALL HAIL...BRIEF HEAVY RAINS AND DEADLY
LIGHTNING WELL AS STRONG AND GUSTY WINDS. THE STORMS WERE MOVING
NORTHEAST AT 35 MILES AN HOUR.

PERSONS IN SOUTHEASTERN JACKSON COUNTY...CENTRAL AND EASTERN JO-DAVIES
COUNTY AND CENTRAL AND EASTERN LAFAYETTE COUNTY SHOULD BE ALERT FOR
THESE THUNDERSTORMS AS THEY APPROACH AND BE PREPARED TO TAKE COVER
SHOULD ANY OF THESE STORMS BECOME SEVERE.

DEROY
Special weather statement, Jun 17, 12:19 PM CDT, 16 minutes before
IAZ008-ILZ001-WIZ018-171815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DUBUQUE IA
1220 PM CDT WED JUN 17 1992

AT 1219 PM CDT...RADAR INDICATED A LINE OF THUNDERSTORMS STRETCHING FROM
NEAR THE QUAD CITIES IN SOUTHEAST IOWA NORTHEASTWARD TO MADISON
IN SOUTHWEST WISCONSIN.  THERE WAS NO PRECIPITATION FALLING IN THE
TRI-STATE AREA AT 1215 PM CDT.  THE STORMS WERE TO THE EAST OF THE TRI-S
TAREA AND WERE MOVING NORTHEAST AT 35 MILES AN HOUR.

OTHERWISE...MOSTLY SUNNY SKIES COVERED THE TRI-STATES AND TEMPERATURE
WAS IN THE MIDDLE 80S.

DEROY

NNNN

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 12:03 PM CDTSevere Thunderstorm WarningDVNHenry57 min
Jun 17, 12:03 PM CDTSevere Thunderstorm WarningDVNDes Moines, Lee42 min
Jun 17, 12:24 PM CDTSevere Thunderstorm WarningDVNClinton, Scott41 min

Nearby

Tornado Warnings in Iowa, 1992Every tornado warning in 1992Tornadoes in 1992

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.