Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 35, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 5, 1990, 2:20 AM CDT for Sioux County, Iowa. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- Jun 5, 1990, 2:20 AM CDT (07:20 UTC)
- Expired
- Jun 5, 1990, 2:45 AM CDT
- In force
- 25 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Sioux 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, 7.3 hours before the alert went out and 197 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
- 3602 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 492 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 050722
SVRFSD
IAC167-050745-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
220 AM CDT TUE JUN 5 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHWEST IOWA
...EASTERN SIOUX
SOME CITIES INCLUDED IN THIS WARNING ARE SHELDON AND ORANGE CITY.
AT 215 AM CDT RADAR INDCATED A SEVERE THUNDERSTORMS 40 MILES SOUTHEAST OSIOUX FALLS NEAR ORANGE CITY IOWA. THE THUNDERSTORM WAS MOVING EAST AT
35 MPH.
IF YOU ARE IN THE PATH OF THIS STORM...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, 12:26 AM CDT, 1 hour 54 minutes before
IAZ001-004-005-050615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1220 AM CDT TUE JUN 5 1990 ...THUNDERSTORMS WITH STRONG GUSTY WINDS IN SIOUXLAND AREA... AT 1215 AM CDT RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS MOVING EAST ACROSS THE SIOUXLAND AREA AT 35 TO 40 MILES AN HOUR. THESE STORMS WERE ACCOMPANIED BY STRONG GUSTY WINDS CAPABLE OF DOWNING DEAD TREES AND BRANCHES. A GUST OF 42 MILES AN HOUR WAS RECORDED BY THE NATIONAL WEATHER SERVICE AT THE SIOUX GATEWAY AIRPORT AT SIOUX CITY AT 1159 AM CDT. THESE THUNDERSTORMS EXTENDED ALONG BOTH SIDES OF THE MISSOURI AND BIG SIOUX RIVERS FROM NEAR SIOUX FALLS SOUTH DAKOTA...THROUGH SIOUX CITY TO JUST NORTH OF OMAHA NEBRASKA. THEY WILL AFFECT THE SIOUXLAND AREA WITH WIND GUSTS TAROUND 45 MILES AN HOUR AND BRIEF HEAVY RAIN THROUGH 200 AM CDT. KROPP
Special weather statement, Jun 5, 1:04 AM CDT, 1 hour 16 minutes before
SDZ020-050630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 100 AM CDT TUE JUN 5 1990 ...INTENSE THUNDERSTORMS OVER EXTREME SOUTHEAST SOUTH DAKOTA... AT 1255 AM CDT A INTENSE THUNDERSTORM WAS LOCATED 45 MILES SOUTH OF SIOUX FALLS NEAR HUB CITY. VERY HEAVY RAIN...HAIL AND WINDS GUSTING TO 40 TO 50 MPH ARE POSSIBLE WITH THIS THUNDERSTORM AS IT MOVES EAST AT 35 TO 40 MPH. PEOPLE IN EASTERN CLAY COUNTY SOUTH DAKOTA SHOULD BE ALERT UNTIL 130 AM CDT FOR POSSIBLE ADVERSE WEATHER IN INTENSE THUNDERSTORMS. BEHREND
Special weather statement, Jun 5, 2:09 AM CDT, 11 minutes before
IAZ04-050800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 209 AM CDT TUE JUN 5 1990 ...INTENSE THUNDERSTORMS OVER EXTREME NORTHWEST IOWA... AT 2AM CDT THUNDERSTORMS WITH VERY HEAVY RAIN AND HIGH WINDS WERE SCATTERED FROM 30 MILES SOUTHEAST OF SIOUX FALLS NEAR HUDSON IOWA TO 45 MILES NORTHEAST OF SIOUX CITY NEAR MARCUS IOWA. THESE THUNDERSTORMS PRODUCED A WIND GUST TO 59 MILES AN HOUR AT THE SIOUX CITY AIRPORT AND WIND DAMAGE WAS REPORTED IN SOUTHERN UNION COUNTY OF SOUTHEAST SOUTH DAKOTA. MOVEMENT WAS EAST AT 35 TO 40 MILES AN HOUR. OTHER SHOWERS WERE LOCATED 35 MILES SOUTH OF SIOUX FALLS NEAR BERESFORD AND STILL OTHER SHOWERS WERE LOCATED FROM MITCHELL SOUTH DAKOTA WEST TO THE MISSOURI RIVER. SHEEHAN
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, 3:56 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 49 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.