Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 6, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 24, 1986, 11:07 PM CST for Warren County, Iowa. It was in force for 38 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 24, 1986, 11:07 PM CST (05:07 UTC)
- Expired
- Apr 24, 1986, 11:45 PM CST
- In force
- 38 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Warren County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 24, 11:10 PM CST | Hail 1.75 | Warren, 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 (KOAX), launched 00:00Z, 5.1 hours before the alert went out and 235 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
- 3542 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 24, 7:48 PM CST, 3 hours 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 748 PM CST THU APR 24 1986 THE SEVERE THUNDERSTORM WATCH NUMBER 105 THAT WAS IN EFFECT FOR SOUTHWEST AND SOUTH CENTRAL IOWA HAS BEEN CANCELLED. ISOLATED SHOWERS AND THUNDERSTORMS CONTINUED OVER PARTS OF SOUTHWEST INTO CENTRAL IOWA THIS EVENING. THESE SHOWERS COULD PRODUCE BRIEF HEAVY RAINS AND GUSTY WINDS WITH THEIR PASSAGE. HOWEVER..THE THUNDERSTORMS ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS. THERE IS A CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE ENTIRE STATE REST OF TONIGHT. THE BEST CHANCE OF PRECIPITATION WILL OCCUR NEAR THE VICINITY OF THE FRONTAL BOUNDARY. MCQUIRTER
Special weather statement, Apr 24, 7:54 PM CST, 3 hours 13 minutes before
SPECIAL WEATHER STATEMENT <PQ< NATIONAL WEATHER SERVICE DES MOINES IA 748 PM CST THU APR 24 1986 THE SEVERE THUNDERSTORM WATCH NUMBER 105 THAT WAS IN EFFECT FOR SOUTHWEST AND SOUTH CENTRAL IOWA HAS BEEN CANCELLED. ISOLATED SHOWERS AND THUNDERSTORMS CONTINUED OVER PARTS OF SOUTHWEST INTO CENTRAL IOWA THIS EVENING. THESE SHOWERS COULD PRODUCE BRIEF HEAVY RAINS AND GUSTY WINDS WITH THEIR PASSAGE. HOWEVER..THE THUNDERSTORMS ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS. THERE IS A CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE ENTIRE STATE REST OF TONIGHT. THE BEST CHANCE OF PRECIPITATION WILL OCCUR NEAR THE VICINITY OF THE FRONTAL BOUNDARY. MCQUIRTER
Special weather statement, Apr 24, 8:33 PM CST, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 825 PM CST THU APR 24 1986 AT 825 PM.. A THUNDERSTORM..PRODUCING SOME VERY HEAVY RAIN..WAS LOCATED 25 MILES SOUTHWEST OF DES MOINES IN SOUTHERN MADISON COUNTY. THIS STORM WAS SOME 10 MILES SOUTH OF WINTERSET. IT WAS MOVING NORTHEAST AT 25 MILES AN HOUR...AND WILL STAY SOUTH OF THE DES MOINES METRO AREA. IT SHOULD MOVE INTO WARREN COUNTY BY 9 PM..AROUND ST MARYS. NO SEVERE WEATHER WAS EXPECTED..ALTHOUGH BRIEF HEAVY RAINS AND SOME HAIL PROBABLY WILL OCCUR. POTTS
Special weather statement, Apr 24, 8:48 PM CST, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 847 PM CST THU APR 24 1986 AT 835 PM.. A SMALL CLUSTER OF THUNDERSTORMS..WITH VERY HEAVY RAIN AND POSSIBLY SOME SMALL HAIL..WAS LOCATED ABOUT 25 MILES SOUTHWEST OF DES MOINES NEAR WINTERSET. THE STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR AND SHOULD BE MOVING INTO THE DES MOINES AND INDIANOLA AREAS BY 930 PM. THERE HAS BEEN NO SEVERE WESTHER REPORTED WITH THESE STORMS. BARLOW
Special weather statement, Apr 24, 8:50 PM CST, 2 hours 17 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 847 PM CST THU APR 24 1986 AT 835 PM.. A SMALL CLUSTER OF THUNDERSTORMS..WITH VERY HEAVY RAIN AND POSSIBLY SOME SMALL HAIL..WAS LOCATED ABOUT 25 MILES SOUTHWEST OF DES MOINES NEAR WINTERSET. THE STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR AND SHOULD BE MOVING INTO THE DES MOINES AND INDIANOLA AREAS BY 930 PM. THERE HAS BEEN NO SEVERE WEATHER REPORTED WITH THESE STORMS. BARLOW
Special weather statement, Apr 24, 9:43 PM CST, 1 hour 24 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 940 PM CST THU APR 24 1986 AT 915 PM..MARBLE SIZE HAIL WAS REPORTED AT WINTERSET. AT 920 PM..SMALL HAIL WAS REPORTED JUST SOUTHEAST OF INDIANOLA. AT 935 PM.. A THUNDERSTORM WITH VERY HEAVY RAIN AND SMALL HAIL WAS LOCATED 20 MILES SOUTHWEST OF DES MOINES NEAR WINTERSET. ANOTHER THUNDERSTORM WITH VERY HEAVY RAIN AND SMALL HAIL WAS LOCATED 20 MILES SOUTHEAST O"F DES MOINES BETWEEN INDIANOLA AND MELCHER. THE STORMS WERE MOVING EAST AT 25 MILES AN HOUR.AND SHOULD BE MOVING INTO THE KNOXVILLE AREA BY 1015 PM. THERE HAS BEEN NO SEVERE WEATHER REPORTED WITH THESE STORMS. BARLOW/MCQUIRTER
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 10:37 PM CST | Severe Thunderstorm Warning | DMX | Madison, Warren | 33 min |
| Apr 24, 11:39 PM CST | Severe Thunderstorm Warning | DMX | Marion | 36 min |
| Apr 25, 1:17 AM CST | Severe Thunderstorm Warning | DMX | Keokuk, Mahaska, Wapello | 58 min |
| Apr 25, 4:24 PM CST | Severe Thunderstorm Warning | DMX | Floyd | 41 min |
| Apr 25, 4:42 PM CST | Severe Thunderstorm Warning | DMX | Allamakee | 53 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1986Every severe thunderstorm warning in 1986
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.