Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 32, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 5, 1990, 3:21 AM CDT for Kossuth County, Iowa. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Jun 5, 1990, 3:21 AM CDT (08:21 UTC)
- Expired
- Jun 5, 1990, 4:00 AM CDT
- In force
- 39 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.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 8.4 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
- 1422 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 050821
SVRDSM
IAC109-050900-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
321 AM CDT TUE JUN 5 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 400 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTH CENTRAL PART OF IOWA
KOSSUTH
AT 315 AM CDT SEVERAL SEVERE THUNDERSTORMS WERE MOVING INTO THE
WESTERN PART OF KOSSUTH COUNTY IN NORTH CENTRAL IOWA.
THESE STORMS WERE MOVING AT 40 TO 45 MILES AN HOUR AND SHOULD BE
THROUGH THE COUNTY BY 345 AM CDT. HIGH WINDS OF AROUND 60 MILES
AN HOUR HAVE BEEN REPORTED WITH THESE STORMS.
CITIES AFFECTED BY THE WARNING INCLUDE BANCROFT AND ALGONA...BOTH
ABOUT 50 MILES WEST OF MASON CITY IOWA.
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.
FORSTERWhat 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, Jun 5, 1:34 AM CDT, 1 hour 47 minutes before
IAZALL-050735- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 135 AM CDT TUE JUN 5 1990 AT 125 AM CDT...SHOWERS AND THUNDERSTORMS CONTINUED TO SPREAD INTO NORTHWEST AND WEST CENTRAL IOWA...FROM SOUTHEAST SOUTH DAKOTA... WITH SOME OF THE STORMS PRODUCING WIND GUSTS TO AROUND 60 MILES AN HOUR...ALONG WITH SOME SMALL HAIL. THE AREA OF SHOWERS AND STORMS WAS ABOUT 60 MILES WIDE...CENTERED FROM THE IOWA/SOUTH DAKO_TA BORDER 50 MILES NORTH OF SIOUX CITY...TO 60 MILES WEST OF DES MOINES. THE SHOWERS AND STORMS WERE SPREADING SOUTHEAST AT 35 MILES AN HOUR. SHOULD THREATENING WEATHER APPROACH...PEOPLE IN THE PATH SHOULD SEEK SHELTER IMMEDIATELY. WPM
Special weather statement, Jun 5, 2:36 AM CDT, 45 minutes before
IAZALL-050835-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
235 AM CDT TUE JUN 5 1990
...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A SMALL PORTION
OF EXTREME NORTHWEST IOWA UNTIL 7AM THIS TUESDAY MORNING...
AT 225 AM CDT...SHOWERS AND THUNDERSTORMS CONTINUED TO SPREAD ACROSS
NORTHWEST AND WEST CENTRAL AND CENTRAL IOWA.
THE AREA OF NUMEROUS SHOWERS AND STRONG THUNDERSTORMS WAS 60 MILES
WIDE...CENTERED FROM THE NORTHWEST CORNER OF IOWA...TO ABOUT 40
MILES WEST OF DES MOINES.
THE STRONGEST THUNDERSTORMS CONTINUED OVER THE EXTREME NORTHWEST AREAS
OF IOWA...AND WERE MOVING RAPIDLY EAST AT AROUND 45 MILES AN HOUR.{{}
SHOULD THREATENING STORMS APPROACH...BE PREPARED TO SEEK SHELTER
IMMEDIATELY.{{}
WPMThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 4:24 AM CDT | Severe Thunderstorm Warning | DMX | Clay, Dickinson | 36 min |
| Jun 5, 4:53 AM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 37 min |
| Jun 5, 5:22 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 53 min |
| Jun 5, 6:27 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 63 min |
| Jun 5, 8:57 AM CDT | Severe Thunderstorm Warning | DMX | Hardin | 43 min |
| Jun 5, 9:00 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 25 min |
| Jun 5, 9:00 AM CDT | Severe Thunderstorm Warning | DMX | Butler | 45 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning in 1990
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.