Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 8, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 19, 1997, 11:13 PM CDT for Brule County, South Dakota. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1997, 11:13 PM CDT (04:13 UTC)
- Expired
- Jun 19, 1997, 11:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Brule County, SD
The radar
The Sioux Falls radar (KFSD), 190 km from the middle of the area, began a volume at 04:12 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 4.2 hours before the alert went out and 142 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
- 941 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1569 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
665 WUUS1 KFSD 200413 RRA SVRFSD SDC015-200445- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1113 PM CDT THU JUN 19 1997 * SEVERE THUNDERSTORM WARNING FOR NORTHERN BRULE COUNTY - IN SOUTHCENTRAL SOUTH DAKOTA * UNTIL 1145 PM CDT * THE STORM IS EXPECTED TO REMAIN IN RURAL AREAS. * AT 1109 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 19 MILES WEST OF CHAMBERLAIN MOVING EAST AT 30 MPH. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED UNLESS IN AN EMERGENCY. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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.
NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 19, 8:29 PM CDT, 2 hours 44 minutes earlier.
Area forecast discussion, Jun 19, 8:29 PM CDT, 2 hours 44 minutes before
SOUTH DAKOTA/NORTHWEST IOWA/SOUTHWEST MINNESOTA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 830 PM CDT WED JUN 18 1997 SEVERE THUNDERSTORM POTENTIAL HAS NOT DEVELOPED AS WELL AS EARLIER EXPECTED AND SOME ADJUSTMENT TO EARLIER CWA ZONES WILL BE MADE. WILL ADJUST ZONES IN LINE WITH SPC CHANGES TO WATCH AREA WHICH IS ANTICIPATED AROUND 9 PM. WILL LOWER THE POPS FOR LATER TONIGHT FOLLOWING THE THUNDERSTORMS MOVING ALONG THE SOUTHEAST BORDER. POTENTIAL FOR SEVERE THUNDERSTORMS YET THROUGH MIDNIGHT FROM AROUND YANKTON ON EAST INTO NORTHWEST IOWA AS THE THUNDERSTORMS MOVE INTO THAT AREA. .FSD...NONE UMLAND
In the hours before
Local storm report, Jun 19, 10:55 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1055 PM CDT THU JUN 19 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0910 PM CLAYTON SD 1.25 INCH HAIL
06/19/97 HUTCHINSON 4 MILES SOUTH OF CLAYTON
UMLANDSpecial weather statement, Jun 19, 11:04 PM CDT, 9 minutes before
NEZ013-014-SDZ060>062-065>071-200510- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1104 PM CDT THU JUN 19 1997 THE SEVERE THUNDERSTORM WATCH NUMBER 482 WHICH WAS IN EFFECT FOR EXTREME SOUTHEAST SOUTH DAKOTA AND DAKOTA AND DIXON COUNTIES OF EXTREME NORTHEAST NEBRASKA HAS BEEN CANCELED. THUNDERSTORMS HAVE MOVED OUT OF THE AREA. ADDITIONAL THUNDERSTORMS MAY DEVELOP LATER TONIGHT. UMLAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:06 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 34 min |
| Jun 19, 9:39 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha, Turner | 31 min |
| Jun 19, 9:39 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 31 min |
| Jun 19, 11:46 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 34 min |
| Jun 19, 11:49 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 31 min |
| Jun 20, 12:25 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 35 min |
| Jun 20, 3:05 AM CDT | Severe Thunderstorm Warning | FSD | Brule | 45 min |
| Jun 20, 3:23 AM CDT | Severe Thunderstorm Warning | FSD | Turner | 32 min |
| Jun 20, 3:40 AM CDT | Severe Thunderstorm Warning | FSD | Aurora | 50 min |
| Jun 20, 4:05 AM CDT | Severe Thunderstorm Warning | FSD | Brule | 35 min |
| Jun 20, 4:13 AM CDT | Severe Thunderstorm Warning | FSD | Davison | 32 min |
| Jun 20, 4:32 AM CDT | Severe Thunderstorm Warning | FSD | Hanson | 33 min |
| Jun 20, 4:41 AM CDT | Severe Thunderstorm Warning | FSD | Brule | 19 min |
| Jun 20, 4:45 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Douglas | 30 min |
| Jun 20, 5:00 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 30 min |
| Jun 20, 5:14 AM CDT | Severe Thunderstorm Warning | FSD | Turner | 31 min |
| Jun 20, 5:19 AM CDT | Severe Thunderstorm Warning | FSD | Douglas, Hutchinson | 36 min |
| Jun 20, 5:32 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 33 min |
| Jun 20, 5:59 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Yankton | 31 min |
| Jun 20, 6:38 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 32 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.