Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 91, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 28, 1990, 3:47 AM CDT for Cherokee County, O'Brien County, Iowa. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Jun 28, 1990, 3:47 AM CDT (08:47 UTC)
- Expired
- Jun 28, 1990, 4:45 AM CDT
- In force
- 58 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Cherokee County, IA, O'Brien 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
Omaha, NE (KOAX), launched 00:00Z, 8.8 hours before the alert went out and 187 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
- 3614 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 202 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 KSUX 280847
SVRSUX
IAC035-141-280945-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
347 AM CDT THU JUN 28 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 445 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE NORTHWEST PART OF IOWA
NORTHEAST CHEROKEE...OBRIEN
AT 335 AM CDT 2 TO 3 INCH DIAMETER HAIL WAS REPORTED 5 MILES EAST
OF HOSPERS...55 MILES NORTHEAST OF SIOUX CITY. HAIL WAS COVERING
THE GROUND UP TO 6 INCHES DEEP. MOVEMENT OF THE STORM WAS
SOUTHEAST AT 20 MILES AN HOUR. STRONG WINDS AND VERY HEAVY RAIN...
CAUSING LOCALIZED FLOODING ARE POSSIBLE. PERSONS IN THE TOWNS OF
PRIMGHAR AND CHEROKEE AS WELL AS THE SURROUNDING AREA SHOULD TAKE
SHELTER IMMEDIATELY.
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW LYING AREAS. IF YOU ARE IN THE PATH OF THIS STORM
TAKE SHELTER IN A REINFORCED BUILDING IMMEDIATELY.
ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS
OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
DROZDWhat 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 28, 2:07 AM CDT, 1 hour 40 minutes before
IAZ001-280800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 205 AM CDT THU JUN 28 1990 ...SEVERE WEATHER WARNING FOR NORTHERN SIOUX AND SOUTHERN LYON COUNTIES OF NORTHWEST IOWA EXPIRED AT 2 AM... AT 2 AM CDT THE SEVERE THUNDERSTORM WARNING EXPIRED FOR NORTHERN SIOUX AND SOUTHERN LYON COUNTIES OF NORTHWEST IOWA. THUNDERSTORMS CONTINUE IN NORTHWEST IOWA...BUT WERE NOT NOW SEVERE IN EXTREME NORTHWEST IOWA AND NO ADDITIONAL WARNINGS WILL BE ISSUED AT THIS TIME. UMLAND
Special weather statement, Jun 28, 2:09 AM CDT, 1 hour 38 minutes before
SDZ019-MNZ017-IAZ001-280810- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 208 AM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH SOUTHEAST TIL 5 AM CDT... ...FLASH FLOOD WATCH SOUTHEAST TIL 5 AM CDT... AT 2 AM CDT THUNDERSTORMS WITH HEAVY RAIN...GUSTY WINDS...SMALL HAIL AND DANGEROUS LIGHTNING CONTINUED IN SOUTHWEST MINNESOTA AND NORTHWEST IOWA. THESE THUNDERSTORMS WERE EAST OF A LINE FROM 25 MILES NORTHEAST OF SIOUX FALLS NEAR PIPESTONE TO 45 MILES SOUTHEAST OF SIOUX FALLS NEAR SIOUX CENTER IOWA. MOVEMENT WAS EAST SOUTHEAST AND 35 MILES AN HOUR. ANOTHER NEW DEVELOPMENT EXTENDED FROM 25 MILES SOUTHEAST OF CHAMBERLAIN NEAR PLATTE TO 55 MILES SOUTHEAST OF CHAMBERLAIN NEAR BUTTE. THIS AREA WAS INCREASING IN INTENSITY AS IT MOVED EAST AT 35 MILES AN HOUR. BERG
Special weather statement, Jun 28, 2:55 AM CDT, 52 minutes before
SDZ017-019-MNZ017-IAZ001-280800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 255 AM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH SOUTHEAST TIL 5 AM CDT... ...FLASH FLOOD WATCH SOUTHEAST TIL 5 AM CDT... AT 245 AM CDT THUNDERSTORMS WITH HEAVY RAIN...GUSTY WINDS...SMALL HAIL AND DANGEROUS LIGHTNING CONTINUED IN SOUTHWEST MINNESOTA AND NORTHWEST IOWA. THESE THUNDERSTORMS WERE EAST OF A LINE FROM 35 MILES NORTHEAST OF SIOUX FALLS NEAR TROSKY MINNESOTA TO 40 MILES SOUTHEAST OF SIOUX FALLS NEAR SIOUX CENTER IOWA. MOVEMENT WAS EAST SOUTHEAST AT 35 MILES AN HOUR. ANOTHER AREA OF THUNDERSHOWERS CONTINUED IN SOUTHCENTRAL SOUTH DAKOTA. THESE THUNDERSHOWERS WERE 20 MIL?ES SOUTHWEST WEST OF MITCHELL TO 45 MILES SOUTHWEST OF MITCHELL NEAR PICKSTOWN. MOVEMENT WAS EAST AT 35 MILES AN HOUR. BERG
Special weather statement, Jun 28, 2:57 AM CDT, 50 minutes before
SDZ003-019-280740 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 255 AM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF NORTHERN SOUTH DAKOTA UNTIL 4 AM CDT AND PARTS OF SOUTHEAST SOUTH DAKOTA UNTIL 5 AM CDT... AT 230 AM CDT...ISOLATED THUNDERSTORMS CONTINUED OVER SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE IN A 40 MILE WIDE AREA ALONG AND 25 MILES EITHER SIDE OF THE MISSOURI RIVER ALONG THE SOUTH DAKOTA AND NEBRAKA BORDER. THE STRONGEST THUNDERSTORM WAS 15 MILES SOUTH OF PLATTE SOUTH DAKOTA. MOVEMENT WAS EAST AT 35 MILES AN HOUR. ALSO...SCATTERED THUNDERSTORMS WITH LIGHT RAIN CONTINUED OVER NORTH CENTRAL SOUTH DAKOTA IN@ A 50 MILE WIDE AREA NORTH OF A FAITH...EAGLE BUTTE...GETTSBURG LINE. MOVEMENT WAS EAST AT 35 MILES AN HOUR MOHR
Special weather statement, Jun 28, 3:26 AM CDT, 21 minutes before
SDZALL-280915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 325 AM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH PORTIONS OF NORTH UNTIL 4 AM CDT... ...FLASH FLOOD WATCH FOR SOUTHEAST UNTIL 5 AM CDT... AT 3 AM CDT SKIES WERE MOSTLY CLOUDY WITH SCATTERED SHOWERS AND THUNDERSTORMS NORTHWEST AND NORTHCENTRAL AND A SMALL PART OF THE SOUTHEAST NEAR THE MISSOURI RIVER. OTHERWISE SKIES WERE CLEAR TO PARTLY CLOUDY IN THE STATE. NORTH WINDS WERE GUSTING TO 55 MPH IN PARTS OF THE NORTHWEST NEAR THUNDERSTORMS. TEMPERATURES RANGED FROM 77 AT CHAMBERLAIN TO 61 AT LEMMON. THROUGH 5 AM CDT THUNDERSTORMS SHOULD DEVELOP SOUTHEASTWARD INTO NORTHERN SOUTH DAKOTA. TEMPERATURES SHOUlLD FALL 1 TO 3 DEGREES MOST AREAS. RYRHOLM
Special weather statement, Jun 28, 3:29 AM CDT, 18 minutes before
SDZ017-018-020-280900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 328 AM CDT THU JUN 28 1990 ...SEVERE THUNDERSTORM WATCH FOR SOUTHEAST SOUTH DAKOTA HAS BEEN CANCELLED... THE SEVERE THUNDERSTORMS WATCH THAT WAS IN EFFECT EFFECT FOR SOUTHEAST SOUTH DAKOTA UNTIL 5 AM CDT HAS BEEN CANCELLED. SCATTERED THUNDERSTORMS HOWEVER ARE EXPECTED CONTINUE THUNDERSTORMS BUT THIS TIME THE THREAT OF SEVERE WEATHER HAS MOVED EAST OF SOUTHEoAST SOUTH DAKOTA. BEHREND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 9:34 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 56 min |
| Jun 27, 11:56 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 34 min |
| Jun 28, 12:30 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 30 min |
| Jun 28, 12:49 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth | 41 min |
| Jun 28, 12:58 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 32 min |
| Jun 28, 1:26 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 34 min |
| Jun 28, 1:37 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth | 53 min |
| Jun 28, 2:08 AM CDT | Severe Thunderstorm Warning | FSD | Ida | 37 min |
| Jun 28, 2:36 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida | 69 min |
| Jun 28, 2:36 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 69 min |
| Jun 28, 2:58 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 32 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.