Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 15, NWS Des Moines, IA

April 10, 1992Lucas County, Monroe County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 10, 1992, 7:12 PM CDT for Lucas County, Monroe County, Iowa. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 10, 1992, 7:12 PM CDT (00:12 UTC)
Expired: Apr 10, 1992, 8:15 PM CDT
In force: 63 min
Issued by: NWS Des Moines, IA
Area: Whole counties

Counties Lucas County, IA, Monroe County, IA

What was reported inside it

Time	Report	Where	Remark
Apr 10, 7:23 PM CDT	Hail 1.75	Lucas, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 0.2 hours before the alert went out and 276 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: 1073 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1696 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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, 4:44 PM CDT, 2 hours 28 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, 2 hours 10 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, 1 hour 27 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, 1 hour 7 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

Special weather statement, Apr 10, 6:45 PM CDT, 27 minutes before

IAZALL-110045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
643 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 632 PM CDT...A LINE OF INTENSE THUNDERSTORMS WAS INDICATED OVER EAST
CENTRAL...CENTRAL AND SOUTH CENTRAL IOWA.  THE LINE WAS 25 MILES WIDE AND
WAS CENTERED FROM CEDAR RAPIDS TO 25 MILES NORTHWEST OF LAMONI.
MARBLE TO GOLF BALL SIZED HAIL...STRONG GUSTY SURFACE WINDS UP TO 70
MILES AN HOUR...BRIEF VERY HEAVY RAIN WERE ASSOCIATED WITH THESE STORMS.

THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.

IF YOU SEE THREATENING WEATHER...TAKE SHELTER IMMEDIA]TELY AND KEEP ABREAST
OF THE LATEST WEATHER INFORMATION.

RICHTER/MILLER

Special weather statement, Apr 10, 6:57 PM CDT, 15 minutes before

IAZ003-008-110010-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA
NATIONAL WEATHER SERVICE WATERLOO IA
610 PM CST SAT MAR 21 1992

...A TORNADO WATCH IS IN EFFECT UNTIL 10 PM CDT FOR PARTS OF
NORTHEAST IOWA...

AT 610 PM CDT THUNDERSTORMS WERE LOCATED IN NORTHEAST IOWA SOUTHEAST
OF DECORAH TO THE MISSISSIPPI RIVER AND IN THE DUBUQUE AREA.  THESE
THUNDERSTORMS WERE MOVING EAST AT 35 MILES AN HOUR.  A FEW SHOWERS
WERE LOCATED NEAR MASON CITY.  TEMPERATURES HAD COOLED TO THE MIDDLE
40S TO LOWER 50S WITH EASTERLY WINDS 10 TO 20 MILES AN HOUR.

THE TORNADO WATCH WILL CONTINUE UNTIL 10 PM CDT ACROSS PARTS OF
NORTHEAST IOWA MAINLY ALONG AND SOUTH OF HIGHWAY 18 AND EAST OF
HIGHWAY 14.  SOME THUNDERSTORMS MAY DEVELOP RAPIDLY IN THESE AREAS
AND PEOPLE SHOULD BE ALERT FOR CHANGING WEATHER CONDITIONS.

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:01 PM CDT	Severe Thunderstorm Warning	DMX	Clarke	44 min
Apr 10, 7:07 PM CDT	Severe Thunderstorm Warning	DMX	Marion	20 min
Apr 10, 9:34 PM CDT	Severe Thunderstorm Warning	DMX	Taylor	16 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1992 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.