Alert archive / South Dakota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 23, 1989, 6:24 PM CDT for Minnehaha County, South Dakota; Rock County, Minnesota. It was in force for 36 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 23, 1989, 6:24 PM CDT (23:24 UTC)
- Expired
- May 23, 1989, 7:00 PM CDT
- In force
- 36 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Rock County, MN, Minnehaha County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 23, 6:55 PM CDT | Hail 2 | Minnehaha, SD |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Aberdeen, SD (KHON), launched 12:00Z, 11.4 hours before the alert went out and 202 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
- 16 J/kg
- Mixed-layer CIN
- -631 J/kg
- Mixed-layer LCL
- 1235 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 134 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 232326
SVRFSD
MNC133-SDC099-240000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
624 PM CDT TUE MAY 23 1989
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST MINNESOTA
...ROCK
IN SOUTHEAST SOUTH DAKOTA
...EASTERN MINNEHAHA
SOME CITIES INCLUDED IN THIS WARNING ARE GARRETSON AND BRANDON SD AND
HARDWICK AND LUVERNE MN. THIS LINE OF SEVERE THUNDERSTORMS WAS MOVING
SOUTHEAST AT 25 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.
KAPELAWhat 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, May 23, 5:24 PM CDT, 1 hour before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 520 PM CDT TUE MAY 23 1989 INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN...DANGEROUS LIGHTNING... AND SMALL HAIL WERE MOVING ACROSS MOVING ACROSS MOODY COUNTY IN SOUTHEAST SOUTH DAKOTA AND ALONG THE SOUTHWEST BORDER OF PIPESTONE COUNTY IN SOUTHWEST MINNESOTA AT 515 PM CDT. THE VERY HEAVY RAIN WILL BE A HAZARD FOR MOTORISTS AND ANYONE OUTDOORS SHOULD SEEK SHELTER WHEN LIGHTNING MOVES INTO THEIR IMMEDIATE AREA. THE INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. PERSONS IN FLANDREAU...EGAN...AND LONE TREE IN SOUTHEAST SOUTH DAKOTA...AND PERSONS IN PIPESTONE AND TROSKY IN PIPESTONE COUNTY AND HARDWICK IN ROCK COUNTY OF SOUTHWEST IOWA SHOULD BE ALERT FOR THE POSSIBLITLY OF THESE STORMS INTENSIFYING AND CAUSING SEVERE WEATHER THROUGH 630 PM CDT. UMLAND
Special weather statement, May 23, 5:28 PM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT ...CORRECTED.. NATIONAL WEATHER SERVICE SIOUX FALLS SD 520 PM CDT TUE MAY 23 1989 INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN...DANGEROUS LIGHTNING... AND SMALL HAIL WERE MOVING ACROSS MOODY COUNTY IN SOUTHEAST SOUTH DAKOTA AND ALONG THE SOUTHWEST BORDER OF PIPESTONE COUNTY IN SOUTHWEST MINNESOTA AT 515 PM CDT. THE VERY HEAVY RAIN WILL BE A HAZARD FOR MOTORISTS AND ANYONE OUTDOORS SHOULD SEEK SHELTER WHEN LIGHTNING MOVES INTO THEIR IMMEDIATE AREA. THE INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. PERSONS IN FLANDREAU...EGAN...AND LONE TREE IN SOUTHEAST SOUTH DAKOTA...AND PERSONS IN PIPESTONE AND TROSKY IN PIPESTONE COUNTY AND HARDWICK IN ROCK COUNTY OF SOUTHWEST MINNESOTA SHOULD BE ALERT FOR THE POSSIBLITLY OF THESE STORMS INTENSIFYING AND CAUSING SEVERE WEATHER THROUGH 630 PM CDT. UMLAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 6:38 PM CDT | Severe Thunderstorm Warning | FSD | Nobles | 37 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1989Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.