Alert archive / Iowa / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 87, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 30, 1989, 6:50 PM CDT for Hardin County, Iowa. It was in force for 40 min. 2 reports 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
- May 30, 1989, 6:50 PM CDT (23:50 UTC)
- Expired
- May 30, 1989, 7:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Hardin 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 |
|---|---|---|---|
| May 30, 6:55 PM CDT | Hail 1 | Hardin, IA | |
| May 30, 7:32 PM CDT | Hail 0.75 | Hardin, 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, 11.8 hours before the alert went out and 276 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
- 43 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 165 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, May 30, 3:06 PM CDT, 3 hours 44 minutes before
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</html>Special weather statement, May 30, 3:40 PM CDT, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 335 PM CDT TUE MAY 30 1989 ...SEVERE THUNDERSTORM WATCH FOR EXTREME NORTHEAST IOWA UNTIL 7 PM... AT 335...AN OCCASIONAL SPRINKLE WAS LOCATED IN PARTS CENTRAL AND NORTH EAST IOWA...HOWEVER THESE SPRINKLES WERE QUITE BRIEF...DISSIPATING AS QUICKLY AS THEY HAVE FORMED. SCOTT
Special weather statement, May 30, 4:24 PM CDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 410 PM CDT TUE MAY 30 1989 ...SEVERE THUNDERSTORM WATCH FOR EXTREME NORTHEAST IOWA UNTIL 7 PM... AT 410...AN OCCASIONAL SPRINKLE WAS LOCATED IN PARTS OF THE NORTH HALF OF IOWA...HOWEVER THESE SPRINKLES WERE QUITE BRIEF. OTHERWISE SKIES ARE MOSTLY CLOUDY IN THE NORTH AND EAST...PARTLY CLOUDY TO SUNNY IN THE SOUTH AND EAST. TEMPERATURES ARE IN THE MID 80S TO AROUND 90. SCeOTT
Special weather statement, May 30, 4:40 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
435 PM CDT TUE MAY 30 1989
...SEVERE THUNDERSTORM WATCH FOR A SMALL PART OF EASTERN IOWA
UNTIL 10 PM...
AT 430...AN OCCASIONAL SPR{INKLE WAS LOCATED IN PARTS OF THE NORTH HALF
OF IOWA...HOWEVER THESE SPRINKLES WERE QUITE BRIEF.
SCOTTSpecial weather statement, May 30, 6:20 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 605 PM CDT TUE MAY 30 1989 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A SMALL PART OF EASTERN IOWA UNTIL 10PM... AT 600 PM...SCATTERED THUNDERSTORMS WITH HEAVY RAINS HAD DEVELOPED IN CENTRAL IOWA...AND SCATTERED SHOWERS AND THUDERSHOWERS CONTINUED JUST SOUTH OF THE MASON CITY AREA. OTHERWISE...SKIES WERE MOSTLY CLOUDY IN THE NORTHERN HALF OF IOWA...SUNNY TO PARTLY C+LOUDY IN THE SOUTHERN HALF. TEMPERATURES WERE IN THE MID 50S TO LOWER 60S IN NORTHWEST IOWA...AND IN THE MID 80S TO AROUND 90 IN THE SOUTHEAST HALF OF IOWA. SCOTT
Special weather statement, May 30, 6:45 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 6 35 PM CDT TUE MAY 30 1989 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A SMALL PART OF EASTERN IOWA UNTIL 10PM... AT 6 30 PM...THUNDERSTORMS WITH VERY HEAVY RAINS HAD DEVELOPED IN CENTRAL IOWA BETWEEN STORY CITY AND IOWA FALLS. VERY HEAVY RAINS... STRONG GUSTY WINDS AND HAIL CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. A FEW SHOWERS WERE AL>SO LOCATED IN NORTH CENTRAL INTO NORTHEAST IOWA IN THE CHARLES CITY AREA...ABOUT 40 MILES EAST OF MASON CITY. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 25 MILES AN HOUR. SCOTT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 6:49 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 41 min |
| May 30, 7:01 AM CDT | Severe Thunderstorm Warning | DMX | Bremer, Chickasaw, Fayette | 44 min |
| May 30, 8:18 AM CDT | Severe Thunderstorm Warning | DMX | Bremer | 57 min |
| May 30, 10:18 AM CDT | Severe Thunderstorm Warning | DMX | Howard | 32 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.