Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 139, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 25, 1990, 9:30 PM CDT for Aurora County, Charles Mix County, Douglas County, South Dakota. It was in force for 60 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
- Aug 25, 1990, 9:30 PM CDT (02:30 UTC)
- Expired
- Aug 25, 1990, 10:30 PM CDT
- In force
- 60 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Aurora County, SD, Charles Mix County, SD, Douglas 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 |
|---|---|---|---|
| Aug 25, 9:30 PM CDT | Thunderstorm Wind 58 | Aurora, 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 00:00Z, 2.5 hours before the alert went out and 163 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
- 4027 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1709 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 7.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFSD 260231
SVRFSD
SDC003-023-043-260330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
930 PM CDT AUG 25 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL SOUTH DAKOTA
...SOUTHWESTERN AURORA...NORTHERN CHARLES-MIX
...NORTHWESTERN DOUGLAS
SOME SOUTH DAKOTA CITIES INCLUDED IN THIS WARNING ARE PLATTE...ACADEMY
...NEW HOLLAND AND HARRISON.
AT 925 PM CDT RADAR INDCATED A SEVERE THUNDERSTORM NEAR ACADEMY WHICH
IS 35 MILES EAST OF WINNER SOUTH DAKOTA. THE SEVERE THUNDERSTORM WAS
MOVING NORTHEAST AT 15 MPH.
THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.
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...DE{ADLY 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, Aug 25, 7:42 PM CDT, 1 hour 48 minutes before
SDZ015>020-260215- SPECIAL WEATHER STATEMENT ...CORRECETED... NATIONAL WEATHER SERVICE SIOUX FALLS SD 740 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTH CENTRAL SOUTH DAKOTA UNTIL 1 AM CDT... AT 735 PM SCATTERED THUNDERSTORMS SOME SEVERE AND WITH HEAVY RAIN...HAIL AND STRONG GUSTY WINDS CONTINUED IN SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE MOSTLY ALONG A LINE FROM 50 MILES SOUTHWEST OF CHAMBERLAIN TO 30 MILES EAST OF CHAMBERLAIN. THE STORMS WERE MOVING NORTHEAST AT 20 MPH.
Special weather statement, Aug 25, 7:42 PM CDT, 1 hour 48 minutes before
SDZ003-004-010-011-015-016-017-260135 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 740 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 1 AM CDT... AT 730 PM CDT...NUMEROUS THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER CENTRAL SOUTH DAKOTA IN THE AREA ALONG AND 45 MILES EITHER SIDE OF A LINE FROM ABERDEEN...THROUGH PIERRE...TO WINNER. HAIL AND STRONG GUSTY WIND AREA LIKELY IN THIS AREA. MOVEMENT WAS EAST AT 20 MILES AN HOUR. SPRINGER
Special weather statement, Aug 25, 8:36 PM CDT, 54 minutes before
SDZ003-004-010-011-015-016-017-260235 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 830 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 1 AM CDT... AT 830 PM CDT...NUMEROUS THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER CENTRAL AND NORTHEAST SOUTH DAKOTA IN THE AREA ALONG AND 25 MILES EITHER SIDE OF A LINE FROM NEAR GROTON...10 MILES EAST OF ABERDEEN SOUTHWEST TO PIERRE. A LARGE THUNDERSTORM WITH VERY HEAVY RAIN WAS OCCURRING OVER SOUTH CENTRAL SOUTH DAKOTA OVER THE COUNTIES OF EASTERN TRIP AND GREGORY COUNTY. HAIL AND STRONG GUSTY WINDS AND FREQUENT LIGHTNING ARE LIKELY IN THESE AREAS. MOVEMENT WAS EAST AT 20 MILES AN HOUR. MILLER
Special weather statement, Aug 25, 8:46 PM CDT, 44 minutes before
SDZ015>016>019-260315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 845 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTH CENTRAL SOUTH DAKOTA UNTIL 1 AM CDT... AT 840 PM SCATTERED THUNDERSTORMS SOME SEVERE AND WITH HEAVY RAIN...HAIL AND STRONG GUSTY WINDS CONTINUED IN SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE MOSTLY ALONG A LINE FROM 30 MILES SOUTH OF CHAMBERLAIN TO MITCHELL. THE STORMS WERE; MOVING NORTHEAST AT 20 MPH.
Special weather statement, Aug 25, 9:21 PM CDT, 9 minutes before
SDZ015>020-260215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 915 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTH CENTRAL SOUTH DAKOTA UNTIL 1 AM CDT... AT 9 PM SCATTERED THUNDERSTORMS...SOME SEVERE CONTINUED TO PLAQUE PARTS OF SOUTH CENTRAL SOUTH DAKOTA. GOLFBALL SIZED HAIL WAS REPORTED AT GREGORY BETWEEN 8 AND 830 PM AND STRONG WINDS GUSTING TO NEAR 70 MPH WERE REPORTED OVER VARIOUS PARTS OF THE AREA. THE STORMS RESPONSIBLE FOR THIS DAMAGING WEATHER WERE MAINLY SOUTH OF I-90 FROM KENNEBEC TO PLANKINTON OR ABOUT 20 MILES SOUTH OF CHAMBERLAIN AND WERE MOVING SLOWLY NORTHEAST. OTHERWISE...PARTLY TO MOSTLY CLOUDY SKIES PREVAILED ACROSS THE AREA. TEMPERATURES RANGED FROM THE MID 70S IN AREAS WITH THUNDERSTORMS TO 88 AT CHAMBERLAIN. TONIGHT...SCATTERED THUNDERSTORMS...SOME SEVERE WILL CONTINUE OVER THE SOUTH CENTRAL AND WILL MOVE INTO THE SOUTHEAST AFTER 10 PM. LOWS TONIGHT WILL COOlL TO THE 60S AND WINDS WILL BECOME LIGHT AND VARIABLE. AS IS ALWAYS TRUE...WEATHER CONDITIONS IN AND AROUND THUNDERSTORMS WILL VARY DRASTICALLY. EDDY
Special weather statement, Aug 25, 9:29 PM CDT, 1 minute before
SDZ003-004-010-011-015-016-017-260235 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 930 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND NORTHEAST SOUTH DAKOTA UNTIL 1 AM CDT... AT 930 PM CDT...NUMEROUS THUNDERSTORMS WITH VERY HEAVY RAIN AND SOME HAIL WERE OCCURRING OVER PARTS OF EASTERN SOUTH DAKOTA. THE LARGEST THUNDERSTORMS WERE LOCATED OVER NORTHERN GREGORY...NORTHEAST HUGHyES AND CENTRAL SPINK AND SOUTHWEST DAY COUNTIES. HAIL...STRONG GUSTY WINDS AND FREQUENT LIGHTNING STRIKES ARE LIKELY WITH THESE STORMS. MOVEMENT WAS NORTHEAST AT 20 MILES AN HOUR. MILLER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 7:30 PM CDT | Severe Thunderstorm Warning | FSD | Gregory, Tripp | 60 min |
| Aug 25, 8:30 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 60 min |
| Aug 25, 8:55 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 65 min |
| Aug 25, 10:00 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 30 min |
| Aug 25, 10:30 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Douglas | 45 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.