Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 55, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 16, 1990, 8:03 PM CDT for Osceola County, Iowa. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Jun 16, 1990, 8:03 PM CDT (01:03 UTC)
- Expired
- Jun 16, 1990, 8:30 PM CDT
- In force
- 27 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, 1.1 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
- NaN m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 185 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 170103
SVRFSD
IAC143-170130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
803 PM CDT SAT JUN 16 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTHWEST PART OF IOWA
OSCEOLA
SOME OF THE CITIES INCLUDED IN THIS WARNING ARE ASHTON...MELVIN
AND SIBLEY.
AT 755 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF
SIBLEY...OR 40 MILES SOUTHEAST OF SIOUX FALLS. MOVEMENT WAS
NORTHEAST AT 35 MILES AN HOUR.
IF YOU ARE IN THE PATH OF THIS STORM..YOU SHOULD GET TO A REINFORCED
SHELTER. A SEVERE THUNDERSTORM PRODUCES DAMAGING 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.
THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING SO BE ON THE LOOKOUT.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, Jun 16, 6:53 PM CDT, 1 hour 10 minutes before
SDZ012-018-170015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 652 PM CDT SAT JUN 16 1990 ...LINE OF THUNDERSTORMS MOVING ACROSS BROOKINGS AND LAKE COUNTIES OF EASTERN SOUTH DAKOTA... AT 650 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS WITH HEAVY RAINS FROM 50 MILES NORTH NORTHWEST OF SIOUX FALLS NEAR BROOKINGS TO 35 MILES NORTHWEST OF SIOUX FALLS JUST SOUTHWEST OF MADISON SOUTH DAKOTA. THIS LINE WAS MOVING EAST AT 45 MPH. GUSTY WINDS...SMALL HAIL AND HEAVY RAINS CAN BE EXPECTED WITH THIS LINE AS IT MOVES EAST ACROSS LAKE AND BROOKINGS COUNTY.
Special weather statement, Jun 16, 7:17 PM CDT, 46 minutes before
SDZ012-017-018-019-020-170100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 717 PM CDT SAT JUN 16 1990 ...TORNADO WATCH IN EFFECT FOR SOUTHCENTRAL AND SOUTHEAST SOUTH DAKOTA UNTIL 7PM CDT... AT 705 PM CDT SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED IN SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA. THE THUNDERSTORMS EXTENDED FROM NEAR YANKTON TO NEAR BROOKINGS. STRONGER THUNDERSTORMS WERE LOCATED NEAR BROOKINGS AND 25 MILES SOUTH/ EAST OF SIOUX FALLS NEAR SIOUX CENTER IOWA. THESE STORMS ARE CAPABLE OF DANGEROUS CLOUD TO GROUND LIGHTNING... HAIL AND GUSTY WINDS. THESE STORMS CAN PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT AND LISTEN TO LATER STATEMENTS AND WARNINGS. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. BERG
Special weather statement, Jun 16, 7:22 PM CDT, 41 minutes before
SDZ012-017-018-019-020-170100- SPECIAL WEATHER STATEMENT ...CORRECTED FOR TORNADO WATCH... NATIONAL WEATHER SERVICE SIOUX FALLS SD 722 PM CDT SAT JUN 16 1990 ...TORNADO WATCH IN EFFECT FOR EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA UNTIL 11 PM CDT... AT 705 PM CDT SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED IN SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA. THE THUNDERSTORMS EXTENDED FROM NEAR YANKTON TO NEAR BROOKINGS. STRONGER THUNDERSTORMS WERE LOCATED NEAR BROOKINGS AND 25 MILES SOUTH/ EAST OF SIOUX FALLS NEAR SIOUX CENTER IOWA. THESE STORMS ARE CAPABLE OF PRODUCING DANGEROUS CLOUD TO GROUND LIGHTENING...HAIL AND GUSTY WINDS. TH1ESE STORMS CAN PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT AND LISTEN TO LATER STATEMENTS AND WARNINGS. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. BERG
Special weather statement, Jun 16, 7:25 PM CDT, 38 minutes before
IAZ004-170130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 725 PM CDT SAT JUN 16 1990 ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST NEBRASKA AND NORTHWEST IOWA TONIGHT... ...A TORNADO WATCH IS IN EFFECT FOR NORTHEAST NEBRASKA UNTIL 9 PM CDT. ...A TORNADO WATCH IS IN EFFECT FOR SOUTHEAST SOUTH DAKOTA AND PART OF NORTHWEST IOWA UNTIL 11 PM CDT... STRONG THUNDERSTORMS WERE MOVING ACROSS SIOUX COUNTY IOWA EARLY THIS EVENING. AT 7:20 PM CDT RADAR SHOWED THUNDERSTORMS NORTH OF A LINE FROM CHATSWORTH IOWA TO HOSPERS IOWA. THE STORMS WERE MOVING NORTHEAST AT 35 MPH. THE STORM WILL PRODUCE LOCALLY HEAVY RANFALL AND MAY PRODUCE PEA TO MARBLE SIZE HAIL. PEOPLE IN SIOUX COUNTY SHOULD BE ALERT TO CHANGING WEATHER CONDITIONS AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES. HOPPES
Special weather statement, Jun 16, 7:56 PM CDT, 7 minutes before
SDZ010-161930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 750 PM CDT SAT JUN 16 1990 ...TORNADO WATCH IN EFFECT FOR PARTS OF EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA UNTIL 11 PM CDT. AT 730 PM CDT...A ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN AND HAIL WAS LOCATED 10 MILES SOUTHEAST OF BROOKINGS NEAR ELKTON. MOVEMENT WAS EAST AT 50 MILES AN HOUR. ALSO...A LARGE AREA OF SHOWERS AN NUMEROUS THUNDERSTORMS CONTINUED OVER EASTERN AND SOUTHEAST SOUTH DAKOTA. THE AREA WAS FROM NORTHEAST SOUTH DAKOTA TO NORTHEAST NEBRASKA AND EAST OF A LINE FROM SISSETON TO 30 MILES SOUTHEAST OF PIERRE TO SOUTH OF LAKE ANDES NEAR THE MISSOURI RIVER. THE STRONGEST THUNDERSTORMSz WERE 30 MILES EAST OF YANKTON AND 20 MILES NORTH OF SIOUX FALLS. MOVEMENT WAS EAST AT 50 MILES AN HOUR. MOHR
Special weather statement, Jun 16, 8:01 PM CDT, 2 minutes before
SDZ012-170130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY..CORRECTION... NATIONAL WEATHER SERVICE HURON SD 750 PM CDT SAT JUN 16 1990 ...TORNADO WATCH IN EFFECT FOR PARTS OF EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA UNTIL 11 PM CDT. AT 730 PM CDT...A ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN AND HAIL WAS LOCATED 10 MILES SOUTHEAST OF BROOKINGS NEAR ELKTON. MOVEMENT WAS EAST AT 50 MILES AN HOUR. ALSO...A LARGE AREA OF SHOWERS AN NUMEROUS THUNDERSTORMS CONTINUED OVER EASTERN AND SOUTHEAST SOUTH DAKOTA. THE AREA WAS FROM NORTHEAST SOUTH DAKOTA TO NORTHEAST NEBRASKA AND EAST OF A LINE FROM SISSETON TO 30 MILES SOUTHEAST OF PIERRE TO SOUTH OF LAKE ANDES NEAR THE MISSOURI RIVER. THE STRONGEST THUNDERSTORMS WERE 30 MILES EAST OF YANKTON AND 20 MILES NORTH OF SIOUX FALLS. MOVEMENT WAS EAST AT 50 MILES AN HOUR. MOHR
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:32 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 28 min |
| Jun 16, 7:39 PM CDT | Flash Flood Warning | FSD | Lyon, Sioux | 4 hr |
| Jun 16, 8:26 PM CDT | Severe Thunderstorm Warning | FSD | Monona, Woodbury | 64 min |
| Jun 16, 9:08 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida | 37 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.