Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 49, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 2, 1992, 9:56 AM CDT for Jasper County, Iowa. It was in force for 34 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1992, 9:56 AM CDT (14:56 UTC)
- Expired
- Jul 2, 1992, 10:30 AM CDT
- In force
- 34 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Jasper County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 12:00Z, 2.9 hours before the alert went out and 279 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
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 021456
SVRDSM
IAC099-021530-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
956 AM CDT THU JUL 2 1992
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1030 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE CENTRAL PART OF IOWA
NORTHERN JASPER
AT 950 AM CDT A SEVERE THUNDERSTORM WAS MOVING INTO NORTHWEST
JASPER COUNTY NEAR MINGO...ABOUT 25 MILES NORTHEAST OF DES MOINES
THE STORM WAS MOVING EAST AT 30 TO 35 MPH.
CITIES INCLUDED IN THE WARNING ARE IRA...MINGO...BAXTER AND
NEWTON. THE STORM WILL REACH NEWTON BY 10 AM CDT.
REMEMBER...SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MILES
AN HOUR...LARGE HAIL...DANGEROUS LIGHTNING...AND VERY HEAVY RAINS.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOU HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
IN ADDITION...THESE STORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCED WARNING SO BE ON THE LOOKOUT.
GGFWhat 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, 8:50 AM CDT, 1 hour 6 minutes before
IAZALL-021440- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 747 AM CDT THU JUL 2 1992 ...A LINE OF STRONG THUNDERSTORMS WAS MOVING ACROSS WESTERN IOWA... AT 825 AM CDT...A LINE OF SCATTERED STRONG THUNDERSTORMS WAS INDICATED OVER THE WEST HALF OF IOWA. THE LINE WAS 25 MILES WIDE AND WAS CENTERED FROM 50 MILES NORTHEAST OF COUNCIL BLUFFS/OMAHA NEAR DENISON TO THE IOWA/MISSOURI 55 MILES SOUTHEAST OF OMAHA NEAR CLARINDA. A VERY STRONG THUNDERSTORM WAS OCCURRING 65 MILES WEST OF DES MOINES NEAR AUDUBON. IN ADDITION...STRONG THUNDERSTORMS WERE OCCURRING OVER THE SOUTHEAST QUATER OF IOWA GENERALLY SOUTHEAST OF A LINE FROM DUBUQUE TO 35 MILES SOUTH OF OTTUMWA. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...FREQUENT DEADLY LIGHTNING... WIND GUSTS UP TO 50 MILES AN HOUR...AND PEA SIZED HAIL. RICHTER/FILLBACH
Special weather statement, Jul 2, 9:24 AM CDT, 32 minutes before
IAZ060-021540- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 920 AM CDT THU JUL 2 1992 A LINE OF STRONG THUNDERSTORMS WAS ENTERING THE WEST SIDE OF THE DES MOINES METROPOLITAN AREA. THUS FAR...NO REPORTS OF SEVERE WEATHER HAVE BEEN RECEIVED...HOWEVER STRONG WINDS...VERY HEAVY RAIN...AND SOME HAIL WILL OCCUR WITH THESE STORMS. RAINFALL AMOUNTS OF 1/2 TO 1 INCH ARE LIKELY WITH THESE STORMS IN A SHORT PERIOD OF TIME. THIS WILL CAUSE SOME STREET FLOODING IN AND AROUND THE CITY. THE STORMS WERE MOVING EAST AT NEARLY 50 MILES AN HOUR AND WILL PASS EAST OF THE CITY BY AROUND 1015 AM THIS MORNING.
Special weather statement, Jul 2, 9:38 AM CDT, 18 minutes before
IAZ060-021540- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 937 AM CDT THU JUL 2 1992 ...TORNADO WATCH IN EFFECT UNTIL 2 PM FOR A LARGE PART OF IOWA... A LINE OF INTENSE THUNDERSTORMS CONTINUED TO ADVANCE EAST AT 45 MILES AN HOUR ACROSS CENTRAL IOWA. THE LEADING EDGE OF THE LINE EXTENDED FROM BOONE...DES MOINES TO THAYER. THIS IS 40 MILES NORTH NORTHWEST OF DES MOINES TO 40 MILES SOUTH SOUTHWEST OF DES MOINES. INTENSE RAINFALL WITH NEAR ZERO VISIBILITY...40 TO 55 MILE AN HOUR WINDS AND PEA-SIZED HAIL CAN BE EXPECTED. THE LINE SHOULD BE NEAR THE COMMUNITES OF STATE CENTER...NEWTON AND CHARITON BY 1035 AM. MYERS
Special weather statement, Jul 2, 9:45 AM CDT, 11 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, 11 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, 8 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
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, 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, 11:30 AM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 30 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.