Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 48, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 15, 1990, 11:35 PM CDT for Lake County, South Dakota. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- Jun 15, 1990, 11:35 PM CDT (04:35 UTC)
- Expired
- Jun 16, 1990, 12:00 AM CDT
- In force
- 25 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lake County, SD
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
Aberdeen, SD (KHON), launched 00:00Z, 4.6 hours before the alert went out and 140 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
- 13 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 898 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFSD 160436
SVRFSD
SDC079-160500-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1135 PM CDT FRI JUN 15 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL SOUTH DAKOTA
...SOUTHWESTERN LAKE
SOME CITIES INCLUDED IN THIS WARNING ARE...MADISON AND ORLAND.
AT 1130 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES
NORTHWEST OF SIOUX FALLS MOVING TOWARDS THE EAST NORTHEAST AT 30 MPH.
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESlS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
THUNDERSTORMS 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 15, 7:20 PM CDT, 4 hours 15 minutes before
SDZ010-011-016-160100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 719 PM CDT FRI JUN 15 1990 AT 715 PM CDT...THUNDERSTORMS WITH HAIL...STRONG GUSTY WIND AND VERY HEAVY RAIN WERE IN A 30 MILE WIDE AREA EXTENDING FROM 45 MILES SOUTHEAST OF PIERRE...NEAR KENNEBEC TO 30 MILES WEST OF HURON. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 35 MILES AN HOUR. PEOPLE IN THE PATH OF THESE STORMS SHOULD REMAIN ON THE ALERT FOR CHANGING WEATHER CONDITIONS. HUTCHEON
Special weather statement, Jun 15, 10:14 PM CDT, 1 hour 21 minutes before
SDZ017- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1005 PM CDT FRI JUN 15 1990 ...AN INTENSE THUNDERSTORM IN EASTERN SOUTH DAKOTA... AT 10 PM CDT AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN CONTINUED MOVING ACROSS DAVISON COUNTY NEAR MITCHELL. THIS STORM MAY ALSO PRODUCE SMALL HAIL AND GUSTY WINDS AS IT MOVES TO THE EAST AT 30 MILES AN HOUR. PERSONS IN THE COUNTIES OF DAVISON AND HANSON INCLUDING THE COMMUNITIES OF ALEXANDRIA AND MITCHELL SHOULD BE ON THE LOOKOUT FOR THIS STORM THROUGH 11 PM CDT. SOME SCATTERED SHOWERS HAVE ALSO DEVELOPED SOUTH OF SIOUX FALLS EXTENDING FROM BERESFORD TO MARION.
Special weather statement, Jun 15, 10:47 PM CDT, 48 minutes before
SDZ015-160415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1045 PM CDT FRI JUN 15 1990 ...THUNDERSTORM WITH VERY HEAVY RAIN IN NORTHWESTERN TRIPP COUNTY OF SOUTHCENTRAL SOUTH DAKOTA... AT 1042 PM CDT RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAINS 20 MILES NORTHWEST OF WINNER SOUTH DAKOTA IN EXTREME NORTHWEST TRIPP COUNTY. THE STORM WAS MOVING EAST NORTHEAST AT 40 MPH. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINS...SMALL HAIL AND GUSTY WINDS AS IT MOVES ACROSS NORTHERN TRIPP COUNTY THROUGH 1130 PM CDT. PERSONS ACROSS NORTHERN TRIPP COUNTY SHOULD KEEP ABREAST OF THIS WEATHER SITUATION AND BE BE PREPARED TO GO TO A SAFE PLACE IF THREATENING WEATHER APPR-OACHES OR IF A WARNING IS ISSUED.
Local storm report, Jun 15, 11:29 PM CDT, 6 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1128 PM CDT FRI JUN 15 1990
STORM DATA FOR FRIDAY EVENING JUNE 9 1990
TIME COUNTY...LOCATION AND STATE CHARACTER OF STORM...DAMAGE
.......................................................................
925 PM CDT AURORA...PLANKINTON SD 55 TO 55 MPH WIND..HEAVY RAIN..
PEA SIZE HAIL
950 PM CDT DAVISON...MT VERNON SD 50 MPH WIND..HVY RAIN..TREE
DAMAGE
1012 PM CDT DAVINSON...MITCHELL SD 45-50 MPH...HEAVY RAIN...TREE
DAMAGE
1025 PM CDT DAVISON...1 MILE NORTH AND 1/2 MILE EAST OF MITCHELL SD
a FARM BUILDINGS DAMAGE..TRACTOR
SHED DESTORYEDThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison | 46 min |
| Jun 15, 10:27 PM CDT | Severe Thunderstorm Warning | FSD | Hanson | 33 min |
| Jun 15, 10:59 PM CDT | Severe Thunderstorm Warning | FSD | McCook | 31 min |
| Jun 16, 1:23 PM CDT | Severe Thunderstorm Warning | FSD | Mellette | 52 min |
| Jun 16, 4:31 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 29 min |
| Jun 16, 5:21 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 39 min |
| Jun 16, 5:46 PM CDT | Tornado Warning | FSD | Clay, Lincoln | 29 min |
| Jun 16, 5:56 PM CDT | Tornado Warning | FSD | Union | 34 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 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.