Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 13, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 10, 1992, 7:01 PM CDT for Clarke County, Iowa. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- Apr 10, 1992, 7:01 PM CDT (00:01 UTC)
- Expired
- Apr 10, 1992, 7:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Clarke County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 0.0 hours before the alert went out and 219 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 110001 SVRDSM IAC039-110045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 701 PM CDT FRI APR 10 1992 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL IOWA ...CLARKE COUNTY AT 700 PM CDT...RADAR INDICATED A SEVERE STORM ABOUT 30 MILES SOUTH OF DES MOINES...NEAR OSCEOLA. THE STORM WAS MOVING EAST AT 35 MILES AN HOUR. CITIES IN THE PATH OF THIS STORM ARE...OSCEOLA...MURRAY... HOPEVILLE...AND WOODBURN. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. MOVE TO THE CENTER OF YOUR HOUSE...STAY AWAY FROM WINDOWS...AND BE READY TO ACT QUICKLY IF A TORNADO DEVELOPS. JM
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 17 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 59 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 16 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, 56 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, 16 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, 4 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, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 20 min |
| Apr 10, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 63 min |
| Apr 10, 9:34 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 16 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.