Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 5, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 10, 1992, 5:12 PM CDT for Black Hawk County, Iowa. It was in force for 48 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, 5:12 PM CDT (22:12 UTC)
- Expired
- Apr 10, 1992, 6:00 PM CDT
- In force
- 48 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Black Hawk County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 5:38 PM CDT | Hail 1 | Black Hawk, 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
Minneapolis, MN (KSTC), launched 12:00Z, 10.2 hours before the alert went out and 284 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 414 m²/s²
- 0-3 km storm-relative helicity
- 761 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KALO 102215 SVRALO IAC013-102300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WATERLOO IA 512 PM CDT FRI APR 10 1992 THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST IOWA ...SOUTHERN BLACK HAWK COUNTY AT 510 PM CDT...WEATHER RADAR IN WATERLOO SHOWED A SEVERE THUNDERSTORM 10 MILES SOUTH OF WATERLOO OR 5 MILES WEST OF LA PORTE CITY. THIS STORM WAS MOVING TO THE EAST AT 35 MILES AN HOUR AND COULD PRODUCE HEAVY RAINS...STRONG WINDS AND DEADLY LIGHTNING. SOME TOWNS IN THE PATH OF THIS STORM ARE BRANDON AND MT. AUBURN. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A REINFORCED BUILDING. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. THIS IS A DANGEROUS STORM. IF YOU ARE OUTSIDE SEEK SHELTER AT ONCE INSIDE A REINFORCED BUILDING. PREPARE FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. SPEECE
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, 1 hour 31 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, 57 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, 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, 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
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 6:18 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 42 min |
| Apr 10, 3:57 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 72 min |
| Apr 10, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | |
| Apr 10, 4:55 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 25 min |
| Apr 10, 5:37 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 53 min |
| Apr 10, 5:46 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 44 min |
| Apr 10, 5:53 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 52 min |
| Apr 10, 5:57 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 63 min |
| Apr 10, 6:10 PM CDT | Flash Flood Warning | DMX | Madison, Warren | 2 hr |
| Apr 10, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 34 min |
| Apr 10, 6:27 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek | 63 min |
| Apr 10, 6:34 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 34 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.