Alert archive / Iowa / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 14, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 24, 1989, 2:33 PM CDT for Kossuth County, Iowa. It was in force for 42 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, 1989, 2:33 PM CDT (19:33 UTC)
- Expired
- Apr 24, 1989, 3:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Kossuth 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, 2:40 PM CDT | Hail 1.5 | Kossuth, 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, 7.6 hours before the alert went out and 189 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
- 1304 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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, 9:54 AM CDT, 4 hours 39 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 950 AM CDT MON APR 24 1989 AT 930 AM...A VERY STRONG THUNDERSTORM HAD DEVELOPED OVER NORTHWEST IOWA NEAR CHEROKEE...40 MILES NORTHEST OF SIOUX CITY. PEA TO MARBLE SIZE HAIL HAS BEEN REPORTED WITH THIS STORM IN THE COMMUNITY OF CHEROKEE. HEAVY RAINS ARE ALSO POSSIBLE WITH THIS STORM. THIS STORM WAS PART OF A SYSTEM OF SCATTERED THUNDERSTORMS AND SHOWERS OVER NORTHWEST...NORTH CENTRAL...AND NORTHEAST IOWA. MOST OF THE SHOWERS WERE NORTH OF A CHEROKEE TO MASON CITY LINE. THE STRONG STORM WAS MOVING NORTHEAST AT 10 MILES AN HOUR WHILE THE SHOWERS WERE MOVING EAST AT 10 MILES AN HOUR. MILL ER
Special weather statement, Apr 24, 12:26 PM CDT, 2 hours 7 minutes before
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</html>Special weather statement, Apr 24, 1:42 PM CDT, 51 minutes before
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</html>Local storm report, Apr 24, 1:44 PM CDT, 49 minutes before
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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 |
|---|---|---|---|---|
| Apr 24, 11:03 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 42 min |
| Apr 24, 11:48 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 32 min |
| Apr 24, 2:51 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 54 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1989Every severe thunderstorm warning in 1989
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.