Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 12, NWS Des Moines, IA

April 10, 1992Warren County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 10, 1992, 6:34 PM CDT for Warren County, Iowa. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Apr 10, 1992, 6:34 PM CDT (23:34 UTC)
Expired
Apr 10, 1992, 7:08 PM CDT
In force
34 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Warren County, IA

The nearest sounding before it

Omaha, NE (KOVN), launched 12:00Z, 11.6 hours before the alert went out and 235 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, Omaha, NE at 12:00Z on 1992-04-10Temperature 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, Omaha, NE at 12:00Z on 1992-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 245 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
647 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
245 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Apr 10, 3:41 PM CDT, 2 hours 53 minutes before
IAZALL-102140-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
340 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 327 PM CDT...WIDELY SCATTERED THUNDERSTORMS WITH HEAVY RAIN WERE
OCCURRING OVER CENTRAL THROUGH SOUTHWEST IOWA.  THE STORMS WERE WITHIN
A 25 MILE WIDE BAND FROM 40 MILES WEST OF DES MOINES TO 30 MILES SOUTHEbAST
OF OMAHA/COUNCIL BLUFFS.

THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.

RICHTER
Special weather statement, Apr 10, 4:15 PM CDT, 2 hours 19 minutes before
IAZALL-102210-

SPECIAL WEATHER STATEMENT AND IOWA WEATHER UPDATE
NATIONAL WEATHER SERVICE DES MOINES IA
412 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 405 PM CDT...A THUNDERSTORM WITH HEAVY RAIN WAS OVER SOUTHWEST IOWA.
THE STORM WAS LOCATED 50 MILES EAST OF OMAHA/COUNCIL BLUFFS...NEAR
ANITA.

THE STORM WAS MOVING EAST AT 40 MILES AN HOUR.

THE STORM WILL BE MOVING INTO EAST DALLAS COUNTY NEAR REDFIELD...OR 25
MILES EAST OF DES MOINES AT 5 PM.  OTHER THUNDERSTORMS WILL DEVELOP
OVER CENTRAL THROUGH SOUTHWEST IOWA.

RICHTER
Special weather statement, Apr 10, 4:44 PM CDT, 1 hour 50 minutes before
IAZALL-102240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
440 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 430 PM CDT...A VERY STRONG THUNDERSTORM WAS LOCATED OVER CENTRAL IOWA.
THE STORM WAS LOCATED 25 MILES NORTHEAST OF DES MOINES.  LARGE HAIL AND
HEAVY RAIN ARE POSSIBLE WITH THIS STORM.  OTHER THUNDERSTORMS AND RAIN
SHOWERS WERE OCCURRING OVER THE SOUTHWEST.  THE BAND OF STORMS AND SHOWERS
WAS 25 MILES WIDE AND CENTERED FROM REDFIELD...OR 25 MILES WEST OF DES
MOINES...TO 35 MILES SOUTHEAST OF OMAHA/COUNCIL BLUFFS.

THE STORMS WERE MOVING EAST AT 40 MILES AN HOUR.

IF YOU SEE THREATENING WEATHER...TAKE SHELTER IMMEDIATELY AND KEEP ABREAST
OF THE LATEST WEATHER INFORMATION.

RICHTER/MILLER
Special weather statement, Apr 10, 5:02 PM CDT, 1 hour 32 minutes before
IAZALL-102310-

SPECIAL WEATHER STATEMENT AND IOWA WEATHER UPDATE
NATIONAL WEATHER SERVICE DES MOINES IA
502 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 500 PM CDT...A VERY STRONG THUNDERSTORM WITH VERY HEAVY RAIN WAS
INDICATED OVER SOUTHWEST IOWA.  THE STORM WAS INDICATED OVER GREENFIELD
...OR 45 MILES SOUTHWEST OF DES MOINES.  MARBLE TO GOLF BALL SIZED HAIL
AND GUSTY SURFACE WINDS WERE REPORTED WITH THIS STORM.

THE STORM WAS MOVING EAST AT 40 MILES AN HOUR.

THE STORM WILL BE MOVING INTO SOUTHERN MADISON COUNTY...SOUTH OF WINTERSET
...AT 545 PM.

RICHTER
Special weather statement, Apr 10, 5:45 PM CDT, 49 minutes before
IAZALL-102345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
545 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 532 PM CDT...AN INTENSE THUNDERSTORM WAS INDICATED OVER CENTRAL IOWA.
THE STORM WAS LOCATED 25 MILES SOUTHWEST OF DES MOINES OVER WINTERSET.
MARBLE TO GOLF BALL SIZED HAIL...GUSTS UP TO 70 MILES AN HOUR...AND BRIEF
VERY HEAVY RAIN WERE REPORTED WITH THIS STORM.

ALSO...OTHER STRONG THUNDERSTORMS WERE LOCATED 20 MILES SOUTHEAST OF
DES MOINES.

THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.

IF YOU SEE THREATENING WEATHER...TAKE SHELTER IMMEDIATELY AND KEEP ABREAST
OF THE LATEST WEATHER INFORMATION.

RICHTER/MILLER
Special weather statement, Apr 10, 6:05 PM CDT, 29 minutes before
IAZALL-110010-

SPECIAL WEATHER STATEMENT AND IOWA WEATHER UPDATE
NATIONAL WEATHER SERVICE DES MOINES IA
605 PM CDT FRI APR 10 1992

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF THE SOUTHEAST HALF
   OF IOWA UNTIL 10 PM THIS FRIDAY EVENING...

AT 600 PM CDT...A LINE OF INTENSE THUNDERSTORMS WERE INDICATED OVER
CENTRAL THROUGH SOUTHWEST IOWA.  THE STORMS WERE WITHIN A 20 MILE WIDE
BAND CENTERED FROM PELLA...OR 35 MILES SOUTHEAST OF DES MOINES...TO
CESTON...OR 35 MILES NORTHWEST OF LAMONI.  REPORTS OF MARBLE TO GOLF BALL
SIZED HAIL...STRONG GUSTY WINDS TO 70 MILES AN HOUR...AND BRIEF VERY
HEAVY RAIN WERE ASSOCIATED WITH THESE STORMS.

THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.

THSES STORMS WILL BE INTO SOUTHERN WARREN AND NORTHERN MAHASKA COUNTIES
WITHIN THE NEXT 30 MINUTES.
TAKE SHELTER IF THREATENING WEATHER APPROACHES YOUR AREA.

RICHTER/MILLER

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 10, 6:18 AM CDTSevere Thunderstorm WarningDMXDecatur, Wayne42 min
Apr 10, 3:57 PM CDTSevere Thunderstorm WarningDMXJasper, Marshall72 min
Apr 10, 4:30 PM CDTSevere Thunderstorm WarningDMXJasper, Marshall
Apr 10, 4:55 PM CDTSevere Thunderstorm WarningDMXAdair, Madison25 min
Apr 10, 5:12 PM CDTSevere Thunderstorm WarningDMXBlack Hawk48 min
Apr 10, 5:37 PM CDTSevere Thunderstorm WarningDMXWarren53 min
Apr 10, 5:46 PM CDTSevere Thunderstorm WarningDMXBuchanan44 min
Apr 10, 5:53 PM CDTSevere Thunderstorm WarningDMXMadison52 min
Apr 10, 5:57 PM CDTSevere Thunderstorm WarningDMXMarion63 min
Apr 10, 6:10 PM CDTFlash Flood WarningDMXMadison, Warren2 hr
Apr 10, 6:26 PM CDTSevere Thunderstorm WarningDMXLinn34 min
Apr 10, 6:27 PM CDTSevere Thunderstorm WarningDMXJasper, Poweshiek63 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1992Every severe thunderstorm warning 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.