Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 137, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 25, 1990, 8:30 PM CDT for Charles Mix County, Gregory 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, 8:30 PM CDT (01:30 UTC)
- Expired
- Aug 25, 1990, 9:30 PM CDT
- In force
- 60 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Charles Mix County, SD, Gregory 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, 8:55 PM CDT | Thunderstorm Wind 0 | Charles Mix, 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, 1.5 hours before the alert went out and 193 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 260132
SVRFSD
SDC023-053-260230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT AUG 25 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL SOUTH DAKOTA
...NORTHERN CHARLES-MIX...CENTRAL AND NORTHERN GREGORY
SOME SOUTH DAKOTA CITIES INCLUDED IN THIS WARNING ARE
BURKE...LUCAS...PLATTE AND ACADEMY.
AT 830 PN CDT RADAR INDCATED A SEVERE THUNDERSTORMS JUST EAST OF
GREGORY SOUTH OR 25 MILES SOUTHEAST OF WINNER. THE SEVERE
THUNDERSTORMS WAS MOVING EASTNORTHEAST AT 20 MPH.
FROM 813 PM TO 825 PM CDT 3/4 INCH TO 11/2 INCH HAIL WAS REPORTED AT
GREGORY.
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...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, Aug 25, 6:27 PM CDT, 2 hours 3 minutes before
SDZ015-260015- WEATHER UPDATE FOR SOUTH CENTRAL AND SOUTHEAST SOUTH DAKOTA NATIONAL WEATHER SERVICE SIOUX FALLS SD 625 PM CDT SAT AUG 25 1990 ...STRONG THUNDERSTORMS OVER SOUTHWEST TRIPP COUNTY... AT 620 PM CDT AN ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN AND STRONG GUSTY WINDS WAS 20 MILES SOUTHWEST OF WINNER. THE THUNDERSTORM WAS MOVING NORTHEAST AT 10 MILES AN HOUR AND WAS INCREASING IN INTENSITY. AS WITH ANY THUNDERSTORM...HAIL AND FREQUENT LIGHTNING STRIKES CAN ALSO BE EXPECTED. THIS THUNDERSTORM WILL MOVE SOUTH OF WINNER BUT WILL EFFECT MOST OF SOUTHERN TRIPP COUNTY BY 730 PM CDT. IF YOU ARE IN THE PATH OF THIS OR ANY THUNDERSTORM...REMAIN ALERT TO THE QUICKLY CHANGING WEATHER CONDITIONS AND BE READY TO TAKE COVER IF NEEDED. EDDY
Special weather statement, Aug 25, 7:12 PM CDT, 1 hour 18 minutes before
SDZ015>020-260215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 724 PM CDT THU AUG 23 1990 AT 7 PM SCATTERED THUNDERSTORM SOME SEVERE AND WITH HEAVY RAIN...HAIL AND STRONG GUSTY WINDS WERE INVADING SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE MOSTLY ALONG A LINE FROM 20 MILES SOUTH OF WINNER TO 20 MILES WEST OF CHAMBERLAIN. THE STORMS WERE MOVING NORTHEAST AT 20 MPH. OTHERWISE...CLOUDS...MOSTLY HIGH LEVEL...FROM THE THUNDERSTORMS IN THE SOUTH CENTRAL...WERE MOVING INTO THE SOUTHEAST. OTHERWISE...HOT AND HUMID WEATHER CONTINUED WITH TEMPERATURES RANGING FROM THE MID 80S TO THE UPPER 90S. WINDS WERE SOUTHEAST AT 10 TO 25 MPH. TONIGHT...SCATTERED THUNDERSTORMS...SOME SEVERE WILL CONTINUE TO DEVELOP OVER THE SOUTH CENTRAL AND WILL MOVE INTO THE SOUTHEAST AROUND OR AFTER MIDNIGHT. LOWS TONIGHT WILL COOL TO THE 60S AND WINDS WILL BECOME LIGHT AND VARIABLE. WEATHER CONDITIONS IN AND AROUND THUNDERSTORMS WILL V_ARY DRAMATICALLY. EDDY
Special weather statement, Aug 25, 7:14 PM CDT, 1 hour 16 minutes before
SDZ015>020-260215- SPECIAL WEATHER STATEMENT ...CORRECETED... NATIONAL WEATHER SERVICE SIOUX FALLS SD 724 PM CDT THU AUG 23 1990 ...A SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTH CENTRAL SOUTH DAKOTA UNTIL 1 AM CDT... AT 7 PM SCATTERED THUNDERSTORM SOME SEVERE AND WITH HEAVY RAIN...HAIL AND STRONG GUSTY WINDS WERE INVADING SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE MOSTLY ALONG A LINE FROM 20 MILES SOUTH OF WINNER TO 20 MILES WEST OF CHAMBERLAIN. THE STORMS WERE MOVING NORTHEAST AT 20 MPH. OTHERWISE...CLOUDS...MOSTLY HIGH LEVEL...FROM THE THUNDERSTORMS IN THE SOUTH CENTRAL...WERE MOVING INTO THE SOUTHEAST. OTHERWISE...HOT AND HUMID WEATHER CONTINUED WITH TEMPERATURES RANGING FROM THE MID 80S TO THE UPPER 90S. WINDS WERE SOUTHEAST AT 10 TO 25 MPH. TONIGHT...SCATTERED THUNDERSTORMS...SOME SEVERE WILL CONTINUE TO DEVELOP OVER THE SOUTH CENTRAL AND WILL MOVE INTO THE SOUTHEAST AROUND OR AFTER MIDNIGHT. LOWS TONIGHT WILbL COOL TO THE 60S AND WINDS WILL BECOME LIGHT AND VARIABLE. WEATHER CONDITIONS IN AND AROUND THUNDERSTORMS WILL VARY DRAMATICALLY. EDDY
Special weather statement, Aug 25, 7:17 PM CDT, 1 hour 13 minutes before
SDZ015>020-260215- SPECIAL WEATHER STATEMENT ...CORRECETED... NATIONAL WEATHER SERVICE SIOUX FALLS SD 717 PM CDT SAT AUG 25 1990 ...A SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTH CENTRAL SOUTH DAKOTA UNTIL 1 AM CDT... AT 7 PM SCATTERED THUNDERSTORM SOME SEVERE AND WITH HEAVY RAIN...HAIL AND STRONG GUSTY WINDS WERE INVADING SOUTH CENTRAL SOUTH DAKOTA. THE THUNDERSTORMS WERE MOSTLY ALONG A LINE FROM 20 MILES SOUTH OF WINNER TO 20 MILES WEST OF CHAMBERLAIN. THE STORMS WERE MOVING NORTHEAST AT 20 MPH. OTHERWISE...CLOUDS...MOSTLY HIGH LEVEL...FROM THE THUNDERSTORMS IN THE SOUTH CENTRAL...WERE MOVING INTO THE SOUTHEAST. OTHERWISE...HOT AND HUMID WEATHER CONTINUED WITH TEMPERATURES RANGING FROM THE MID 80S TO THE UPPER 90S. WINDS WERE SOUTHEAST AT 10 TO 25 MPH. TONIGHT...SCATTERED THUNDERSTORMS...SOME SEVERE WILL CONTINUE TO DEVELOP OVER THE SOUTH CENTRAL AND WILL MOVE INTO THE SOUTHEAST AROUND OR AFTER MIDNIGHT. LOWS TONIGHT WILdL COOL TO THE 60S AND WINDS WILL BECOME LIGHT AND VARIABLE. WEATHER CONDITIONS IN AND AROUND THUNDERSTORMS WILL VARY DRAMATICALLY. EDDY
Special weather statement, Aug 25, 7:42 PM CDT, 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, 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
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, 8:55 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 65 min |
| Aug 25, 9:30 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Charles Mix, Douglas | 60 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.