Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 36, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 5, 1990, 3:56 AM CDT for Osceola County, Iowa. It was in force for 49 min.
The area
The counties it named.
The facts
- Issued
- Jun 5, 1990, 3:56 AM CDT (08:56 UTC)
- Expired
- Jun 5, 1990, 4:45 AM CDT
- In force
- 49 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Osceola 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, 8.9 hours before the alert went out and 230 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 KFSD 050858
SVRFSD
IAC119-143-167-050945-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
356 AM CDT TUE JUN 5 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHWEST IOWA
...SOUTHEASTERN LYON...SOUTHERN OSCEOLA
...NORTHEASTERN SIOUX
SOME CITIES INCLUDED IN THIS WARNING ARE GEORGE..SHELDON..ASHTON AND
MELVIN IOWA.
AT 350 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 35 MILES SOUTHEAST
OF SIOUX FALLS NEAR GEORGE IOWA. THE SEVERE THUNDERSTORM WAS MOVING
EAST AT 35 MPH.
IF YOU ARE IN THE PATH OF THIS STqORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
BEHRENDWhat 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, 3:06 AM CDT, 50 minutes before
SDZ18-050900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 305 AM CDT TUE JUN 5 1990 ...INTENSE THUNDERSTORM 30 MILES WEST OF SIOUX FALLS... AT 2 AM CDT AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS OVER SOUTH CENTRAL MCCOOK COUNTY...30 MILES WEST OF SIOUX FALLS...MOVING EAST AT 35 TO 40 MPH. THIS THUNDERSTORM WAS THE STRONGEST IN A LINE EXTENDING FROM ABOUT 35 MILES NORTHWEST OF SIOUX FALLS TO 40 MILES SOUTHWEST OF SIOUX FALLS. THE THUNDERSTORMS WILL MOVE INTO MINNEHAHA COUNTY AROUND 330 AM CDT AND COULD REACH THE SIOUX FALLS AREA AROUND 4 AM CDT. NO SEVERE WEATHER HAD BEEN REPORTED WITH THESE STORMS BUT THERE IS SOME POTENTIAL FOR THE STORMS TO BECOME STRONGER.*..POSSIBLY PRODUCING HAIL AND STRONG WINDS. A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR THIS AREA ALONG WITH OTHER PARTS OF EASTERN SOUTH DAKOTA UNTIL 7 AM CDT. WILLIAMS
Special weather statement, Jun 5, 3:06 AM CDT, 50 minutes before
SDZ18-050900- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE SIOUX FALLS SD 305 AM CDT TUE JUN 5 1990 ...INTENSE THUNDERSTORM 30 MILES WEST OF SIOUX FALLS... AT 3 AM CDT AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS OVER SOUTH CENTRAL MCCOOK COUNTY...30 MILES WEST OF SIOUX FALLS...MOVING EAST AT 35 TO 40 MPH. THIS THUNDERSTORM WAS THE STRONGEST IN A LINE EXTENDING FROM ABOUT 35 MILES NORTHWEST OF SIOUX FALLS TO 40 MILES SOUTHWEST OF SIOUX FALLS. THE THUNDERSTORMS WILL MOVE INTO MINNEHAHA COUNTY AROUND 330 AM CDT AND COULD REACH THE SIOUX FALLS AREA AROUND 4 AM CDT. NO SEVERE WEATHER HAD BEEN REPORTED WITH THESE STORMS BUT THERE IS SOME POTENTIAL FOR THE STORMS TO+ BECOME STRONGER...POSSIBLY PRODUCING HAIL AND STRONG WINDS. A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR THIS AREA ALONG WITH OTHER PARTS OF EASTERN SOUTH DAKOTA UNTIL 7 AM CDT. WILLIAMS
Local storm report, Jun 5, 3:45 AM CDT, 11 minutes before
SEVERE LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX CITY IA
345 AM CDT TUE JUN 5 1990
TIME..CDT.. EVENT
JUN 5 1990
...WOODBURY COUNTY IOWA...
1233 AM WIND GUST OF 59 MILES AN HOUR AT NATIONAL WEATHER
SERVICE OFFICE AT SIOUX GATEWAY AIRPORT IN SIOUX
CITY.
1250 AM AT 200 AM WOODBURY COUNTY EMERGENCY OPERATIONS
TO CENTER REPORTS MANY POWER LINES DOWN IN THE SIOUX
130 AM SIOUX CITY AREA BETWEEN 1250 AM CDT AND 130 AM CDT.
...UNION COUNTY SOUTH DAKOTA...
126 AM SECURITY AT DAKOTA DUNES REPORTED PART OF ROOF OF
LARGE TRACTOR GARAGE AND TOOL STORAGE BUILDING
BLOWN OFF. REPORT RELAYED BY WOODBURY COUNTY EOC.
...PLYMOUTH COUNTY IOWA...
126 AM PLYMOUTH COUNTY SHERIFF REPORTS SHORT POWER OUTAGE
IN THE CITY OF LEMARS.
KROPP
PERRY CREEK FALLING BUT EXTENSIVE FLOODING IN SIOUX
CITY WEST SIDE. EVACUATIONS CONTINUING.
850 AM WOODBURY COUNTY EOC REPORTED THAT PERRY CREEK LEVELS
WERE FALLING. WESTSIDE AND DOWNTOWN AREAS THAT WERE
FLOODED MAY 18 1990 WERE FLOODED AGAIN...BUSINESS
AND RESIDENTIAL AREAS.
KROPPLocal storm report, Jun 5, 3:47 AM CDT, 9 minutes before
SEVERE LOCAL STORM REPORT...DELETED EXTRA MATERIAL FROM MESSAGE
NATIONAL WEATHER SERVICE SIOUX CITY IA
345 AM CDT TUE JUN 5 1990
TIME..CDT.. EVENT
JUN 5 1990
...WOODBURY COUNTY IOWA...
1233 AM WIND GUST OF 59 MILES AN HOUR AT NATIONAL WEATHER
SERVICE OFFICE AT SIOUX GATEWAY AIRPORT IN SIOUX
CITY.
1250 AM AT 200 AM WOODBURY COUNTY EMERGENCY OPERATIONS
TO CENTER REPORTS MANY POWER LINES DOWN IN THE SIOUX
130 AM SIOUX CITY AREA BETWEEN 1250 AM CDT AND 130 AM CDT.
...UNION COUNTY SOUTH DAKOTA...
126 AM SECURITY AT DAKOTA DUNES REPORTED PART OF ROOF OF
LARGE TRACTOR GARAGE AND TOOL STORAGE BUILDING
BLOWN OFF. REPORT RELAYED BY WOODBURY COUNTY EOC.
...PLYMOUTH COUNTY IOWA...
126 AM PLYMOUTH COUNTY SHERIFF REPORTS SHORT POWER OUTAGE
IN THE CITY OF LEMARS.
KROPP
PERRY CREEK FALLING BUT EXTENSIVE FLOODING IN SIOUX
CITY WEST SIDE. EVACUATIONS CONTINUING.
850 AM WOODBURY COUNTY EOC REPORTED THAT PERRY CREEK LEVELS
WERE FALLING. WESTSIDE AND DOWNTOWN AREAS THAT WERE
FLOODED MAY 18 1990 WERE FLOODED AGAIN...BUSINESS
AND RESIDENTIAL AREAS.
KROPPLocal storm report, Jun 5, 3:48 AM CDT, 8 minutes before
SEVERE LOCAL STORM REPORT...DELETED EXTRA MATERIAL FROM MESSAGE
NATIONAL WEATHER SERVICE SIOUX CITY IA
345 AM CDT TUE JUN 5 1990
TIME..CDT.. EVENT
JUN 5 1990
...WOODBURY COUNTY IOWA...
1233 AM WIND GUST OF 59 MILES AN HOUR AT NATIONAL WEATHER
SERVICE OFFICE AT SIOUX GATEWAY AIRPORT IN SIOUX
CITY.
1250 AM AT 200 AM WOODBURY COUNTY EMERGENCY OPERATIONS
TO CENTER REPORTS MANY POWER LINES DOWN IN THE SIOUX
130 AM SIOUX CITY AREA BETWEEN 1250 AM CDT AND 130 AM CDT.
...UNION COUNTY SOUTH DAKOTA...
126 AM SECURITY AT DAKOTA DUNES REPORTED PART OF ROOF OF
LARGE TRACTOR GARAGE AND TOOL STORAGE BUILDING
BLOWN OFF. REPORT RELAYED BY WOODBURY COUNTY EOC.
...PLYMOUTH COUNTY IOWA...
126 AM PLYMOUTH COUNTY SHERIFF REPORTS SHORT POWER OUTAGE
IN THE CITY OF LEMARS.
KROPPSpecial weather statement, Jun 5, 3:53 AM CDT, 3 minutes before
SDZ05-12-050945 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 345 AM CDT TUE JUN 5 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EASTERN SOUTH DAKOTA...MAINLY IN THE AREA EAST OF THE JAMES RIVER UNTIL 7 AM CDT... AT 335 AM CDT...NUMEROUS THUNDERSTORMS...SOME WITH VERY HEAVY RAIN AND HAIL...CONTINUED OVER NORTHEAST SOUTH DAKOTA IN THE AREA NORTH AND EAST OF A LINE FROM THE NORTH DAKOTA LINE ABOUT 70 MILES NORTiH OF WATERTOWN... THROUGH WATERTOWN...TO BROOKINGS. MOST OF THESE STORMS WERE MOVING EAST AT 60 MILES AN HOUR AND WOULD MOVE OUT OF SOUTH DAKOTA AND INTO MINNESOTA BY 430 AM CDT. SPRINGER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 12:39 AM CDT | Severe Thunderstorm Warning | FSD | Monona, Plymouth, Woodbury | 66 min |
| Jun 5, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 56 min |
| Jun 5, 1:45 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 30 min |
| Jun 5, 2:20 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 25 min |
| Jun 5, 3:56 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 34 min |
| Jun 5, 4:13 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 62 min |
| Jun 5, 4:42 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 63 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.