Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 57, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 2, 1992, 11:30 AM CDT for Davis County, Wapello County, Iowa. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1992, 11:30 AM CDT (16:30 UTC)
- Expired
- Jul 2, 1992, 12:00 PM CDT
- In force
- 30 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Davis County, IA, Wapello County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 12:00Z, 4.5 hours before the alert went out and 335 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
- NaN m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
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, Jul 2, 9:45 AM CDT, 1 hour 45 minutes before
IAZ006>011-016>019-026>29-038>040-021600 SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA 930 AM CDT THU JUL 2 1992 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST IOWA UNTIL 2PM CDT... AT 940 AM CDT A LINE OF THUNDERSTORMS WAS CROSSING THE I35 AREA. THESE THUNDERSTORMS WERE MOVING EASTERLY AT 45 MILES AN HOUR. ELSEWHERE IT WAS MOSTLY CLOUDY ACROSS NORTHEAST IOWA. THE LINE OF THUNDERSTORMS ALONG THE I35 CORRIDOR WILL BE MOVING INTO NORTH CENTRAL AND NORTHEAST IOWA BETWEEN 1030 AND 1130 AM CDT. THESE ARE POTENTIALLY DANGEROUS STORMS AND SHOULD BE WATCHED CLOSELY. THEY WILL EFFECT THE HAMTPON...GRUNDY CENTER..CONRAD...ALLISON AND THE PARKERSBURG AREA...THEN ON TO THE WATERLOO METRO AREA. RR
Special weather statement, Jul 2, 9:45 AM CDT, 1 hour 45 minutes before
IAZALL-021540- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 844 AM CDT THU JUL 2 1992 ...A TORNADO WATCH FOR A LARGE PART OF IOWA UNTIL 2 PM CDT... AT 928 AM CDT...INTENSE THUNDERSTORMS WERE OCCURRING IN CENTRAL IOWA. THE THUNDERSTORMS WERE LOCATED 25 TO 30 MILES NORTH OF DES MOINES. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS TO 60 MILES AN HOUR...AND SMALL HAIL. THE MENTIONED STORMS WERE PART OF AN AREA OF SCATTERED STRONG STORMS OVER THE WEST HALF OF IOWA...MAINLY WEST OF A LINE FROM ALGONA...TO JUST EAST OF DES MOINES...THEN TO LAMONI. THE STORMS WERE MOVING EAST 45 MILES AN HOUR. RICHTER
Special weather statement, Jul 2, 9:48 AM CDT, 1 hour 42 minutes before
IAZALL-021540- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...COR FOR TIME NATIONAL WEATHER SERVICE DES MOINES IA 944 AM CDT THU JUL 2 1992 ...A TORNADO WATCH FOR A LARGE PART OF IOWA UNTIL 2 PM CDT... AT 928 AM CDT...INTENSE THUNDERSTORMS WERE OCCURRING IN CENTRAL IOWA. THE THUNDERSTORMS WERE LOCATED 25 TO 30 MILES NORTH OF DES MOINES. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS TO 60 MILES AN HOUR...AND SMALL HAIL. THE MENTIONED STORMS WERE PART OF AN AREA OF SCATTERED STRONG STORMS OVER THE WEST HALF OF IOWA...MAINLY WEST OF A LINE FROM ALGONA...TO JUST EAST OF DES MOINES...THEN TO LAMONI. THE STORMS WERE MOVING EAST 45 MILES AN HOUR. RICHTER
Special weather statement, Jul 2, 10:42 AM CDT, 48 minutes before
IAZALL-021640- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1040 AM CDT THU JUL 2 1992 ...A TORNADO WATCH FOR A LARGE PART OF IOWA UNTIL 2 PM CDT... AT 1031 AM CDT...INTENSE THUNDERSTORMS WERE OCCURRING OVER NORTH CENTRAL INTO SOUTH CENTRAL IOWA. THE LEADING EDGE OF THE PRECIPITATION EXTENDED FROM MASON CITY...TO 60 MILES EAST OF DES MOINES...NEAR MONTEZUMA...TO THE MISSOURI BORDER...SOUTHWEST OF OTTUMWA. THE STRONGEST STORMS WERE 30 TO 50 MILES SOUTHWEST OF WATERLOO...BETWEEN TAMA AND SOUTH OF ELDORA. DAMAGING THUNDERSTORM WINDS...HAIL...VERY HEAVY RAINS...FREQUENT DEADLY LIGHTNING IS LIKELY WITH THESE STORMS. THE STORMS WERE MOVING EAST 45 MILES AN HOUR. FILLBACH/BARLOW
Special weather statement, Jul 2, 11:19 AM CDT, 11 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:35 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 55 min |
| Jul 2, 1:14 AM CDT | Severe Thunderstorm Warning | DMX | Audubon | 61 min |
| Jul 2, 2:16 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 44 min |
| Jul 2, 9:11 AM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 34 min |
| Jul 2, 9:50 AM CDT | Tornado Warning | DMX | Marshall | 25 min |
| Jul 2, 9:50 AM CDT | Tornado Warning | DMX | Story | 20 min |
| Jul 2, 9:56 AM CDT | Severe Thunderstorm Warning | DMX | Jasper | 34 min |
| Jul 2, 10:09 AM CDT | Severe Thunderstorm Warning | DMX | Grundy | 51 min |
| Jul 2, 10:21 AM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 24 min |
| Jul 2, 10:43 AM CDT | Severe Thunderstorm Warning | DMX | Benton | 42 min |
| Jul 2, 10:44 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 46 min |
| Jul 2, 10:44 AM CDT | Severe Thunderstorm Warning | DMX | Grundy | 23 min |
| Jul 2, 10:55 AM CDT | Severe Thunderstorm Warning | DMX | Keokuk | 43 min |
| Jul 2, 11:08 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 37 min |
| Jul 2, 2:58 PM CDT | Tornado Warning | DMX | Mahaska | 32 min |
| Jul 2, 3:12 PM CDT | Tornado Warning | DMX | Keokuk, Wapello | 21 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.