Alert archive / South Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 126, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 8, 1997, 12:58 PM CDT for Brookings County, Kingsbury County, South Dakota. It was in force for 32 min. 6 reports 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
- Sep 8, 1997, 12:58 PM CDT (17:58 UTC)
- Expired
- Sep 8, 1997, 1:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Brookings County, SD, Kingsbury County, SD
The radar
The Sioux Falls radar (KFSD), 93 km from the middle of the area, began a volume at 18:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 8, 12:58 PM CDT | Hail 0.75 | Arlington, SD | |
| Sep 8, 1:05 PM CDT | Hail 0.75 | Arlington, SD | |
| Sep 8, 1:15 PM CDT | Hail 0.75 | Bruce, SD | Hail caused crop damage in a path one mile wide and 15 miles long. The damage was limited because of the near maturity of the crops. |
| Sep 8, 1:15 PM CDT | Thunderstorm Wind 52 | Bruce, SD | Thunderstorm winds destroyed a pole barn and damaged trees over a small area. |
| Sep 8, 1:16 PM CDT | Hail 0.75 | Arlington, SD | |
| Sep 8, 1:20 PM CDT | Hail 0.88 | Sinai, 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 6.0 hours before the alert went out and 116 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
- 1740 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1054 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
009 WUUS1 KFSD 081759 RRA SVRFSD SDC011-077-081830- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1258 PM CDT MON SEP 8 1997 * SEVERE THUNDERSTORM WARNING FOR BROOKINGS COUNTY IN EASTCENTRAL SOUTH DAKOTA EASTERN KINGSBURY COUNTY IN EASTCENTRAL SOUTH DAKOTA * UNTIL 130 PM CDT * SOME AREAS AFFECTED BADGER AROUND 100 PM CDT LAKE PRESTON AROUND 100 PM CDT HETLAND AROUND 110 PM CDT ARLINGTON AROUND 120 PM CDT VOLGA AROUND 125 PM CDT BROOKINGS AROUND 130 PM CDT * AT 1253 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 32 MILES WEST OF BROOKINGS OR 5 MILES NORTHWEST OF LAKE PRESTON MOVING SOUTHEAST AT 25 MPH. AT 1250 PM CDT DIME SIZE HAIL AND 60 MPH WINDS CAUSED TREE DAMAGE 7 MILES SOUTHWEST OF ERWIN SD...AND AT 1255 PM CDT DIME SIZE HAIL AND 50 MPH WERE REPORTED AT DE SMET SD. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY. & WILLIAMS
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 Sep 8, 11:56 AM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, Sep 8, 11:56 AM CDT, 1 hour 2 minutes before
SOUTHEAST SD/NORTHWEST IA/SOUTHWEST MN FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 1150 AM CDT MON SEP 8 1997 FOG EPSIODE OVER...SO NOW THUNDERSTORMS BECOME THE MAIN CONCERN. WRN CWA GETTING CLOSE TO SFC BASED CONVECTIVE TMPS...AND EXTREMELY UNSTABLE. TSRA FORMING ALONG SFC CDFNT...AND ALSO BNDRY FM LAST NGT THRU NE/ECNTRL SD. ABR VWP EXHIBITING GUD SHEAR...AND FLOW FAVORABLE FOR SPLITTING CELLS. HAVE UPDATED TO INCREASE POPS CWAWIfDE. TEMPS ALSO NEEDED A SMALL BOOST SRN CWA...NOW HOPE LOW CLDS DISSIPATE IN TIME. .FSD...NONE CHAPMAN
In the hours before
Special weather statement, Sep 8, 11:04 AM CDT, 1 hour 54 minutes before
SIGNIFICANT WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1105 AM CDT MON SEP 8 1997 *** SIGNIFICANT WEATHER PERTAINS TO WEATHER ELEMENTS ASSOCIATED WITH THUNDERSTORMS. *** .SYNOPSIS...A STRONG UPPER LEVEL SYSTEM WILL DROP SOUTHEAST ACROSS SOUTH DAKOTA LATE THIS AFTERNOON AND TONIGHT. THE ASSOCIATED COLD FRONT WILL MOVE INTO NORTHWEST IOWA BY EARLY EVENING. THE ATMOSPHERE OVER THE AREA CONTINUES MOIST AND MODERATELY UNSTABLE... SO WITH HEATING OF THE DAY...SCATTERED THUNDERSTORMS ARE EXPECTED. PREFERRED LOCATION FOR DEVELOPMENT THIS AFTERNOON WILL BE ALONG THE COLD FRONT...AND ALSO ALONG A BOUNDARY FROM LAST NIGHTS CONVECTION LYING ACROSS EAST CENTRAL SOUTH DAKOTA AND SOUTHWEST MINNESOTA. RELATIVELY COLD AIR ALOFT MAY RESULT IN SOME SMALL HAIL IN STRONGER STORMS. SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-IAZ001>003- 012>014-020>022-031-032-NEZ013-014-090500- AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-CHARLES MIX-CLAY-DAVISON- DOUGLAS-GREGORY-HANSON-HUTCHINSON-JERAULD-KINGSBURY-LAKE-LINCOLN- MC COOK-MINER-MINNEHAHA-MOODY-SANBORN-TURNER-UNION-YANKTON-COTTONWOOD- JACKSON-LINCOLN-LYON-MURRAY-NOBLES-PIPESTONE-ROCK-BUENA VISTA- CHEROKEE-CLAY-DICKINSON-IDA-LYON-O'BRIEN-OSCEOLA-PLYMOUTH-SIOUX- WOODBURY-DAKOTA-DIXON- INCLUDING THE CITIES OF...BROOKINGS...CHAMBERLAIN...HURON...MITCHELL... SIOUX FALLS...YANKTON...LUVERNE...PIPESTONE...SLAYTON...WORTHINGTON... LE MARS...ROCK RAPIDS...SIOUX CENTER...SIOUX CITY...SPENCER... SPIRIT LAKE...STORM LAKE 1105 AM CDT MON SEP 8 1997 FORECAST THROUGH MIDNIGHT: WIDELY SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND PUSH ACROSS THE AREA THROUGH THE EVENING. SOME STORMS MAY CONTAIN SMALL HAIL AND WINDS GUSTS TO 40 MILES AN HOUR...BUT SIGNIFICANT WEATHER IS NOT EXPECTED IN THIS AREA THROUGH MIDNIGHT. * SIGNIFICANT WEATHER: NONE * SPOTTER ACTIVATION: SPOTTER ACTIVATION IS NOT ANTICIPATED. CHAPMAN
Special weather statement, Sep 8, 11:05 AM CDT, 1 hour 53 minutes before
SIGNIFICANT WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1105 AM CDT MON SEP 8 1997 *** SIGNIFICANT WEATHER PERTAINS TO WEATHER ELEMENTS ASSOCIATED WITH THUNDERSTORMS. *** .SYNOPSIS...A STRONG UPPER LEVEL SYSTEM WILL DROP SOUTHEAST ACROSS SOUTH DAKOTA LATE THIS AFTERNOON AND TONIGHT. THE ASSOCIATED COLD FRONT WILL MOVE INTO NORTHWEST IOWA BY EARLY EVENING. THE ATMOSPHERE OVER THE AREA CONTINUES MOIST AND MODERATELY UNSTABLE... SO WITH HEATING OF THE DAY...SCATTERED THUNDERSTORMS ARE EXPECTED. PREFERRED LOCATION FOR DEVELOPMENT THIS AFTERNOON WILL BE ALONG THE COLD FRONT...AND ALSO ALONG A BOUNDARY FROM LAST NIGHTS CONVECTION LYING ACROSS EAST CENTRAL SOUTH DAKOTA AND SOUTHWEST MINNESOTA. RELATIVELY COLD AIR ALOFT MAY RESULT IN SOME SMALL HAIL IN STRONGER STORMS. SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-IAZ001>003- 012>014-020>022-031-032-NEZ013-014-090500- AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-CHARLES MIX-CLAY-DAVISON- DOUGLAS-GREGORY-HANSON-HUTCHINSON-JERAULD-KINGSBURY-LAKE-LINCOLN- MC COOK-MINER-MINNEHAHA-MOODY-SANBORN-TURNER-UNION-YANKTON-COTTONWOOD- JACKSON-LINCOLN-LYON-MURRAY-NOBLES-PIPESTONE-ROCK-BUENA VISTA- CHEROKEE-CLAY-DICKINSON-IDA-LYON-OBRIEN-OSCEOLA-PLYMOUTH-SIOUX- WOODBURY-DAKOTA-DIXON- INCLUDING THE CITIES OF...BROOKINGS...CHAMBERLAIN...HURON...MITCHELL... SIOUX FALLS...YANKTON...LUVERNE...PIPESTONE...SLAYTON...WORTHINGTON... LE MARS...ROCK RAPIDS...SIOUX CENTER...SIOUX CITY...SPENCER... SPIRIT LAKE...STORM LAKE 1105 AM CDT MON SEP 8 1997 FORECAST THROUGH MIDNIGHT: WIDELY SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND PUSH ACROSS THE AREA THROUGH THE EVENING. SOME STORMS MAY CONTAIN SMALL HAIL AND WINDS GUSTS TO 40 MILES AN HOUR...BUT SIGNIFICANT WEATHER IS NOT EXPECTED IN THIS AREA THROUGH MIDNIGHT. * SIGNIFICANT WEATHER: NONE * SPOTTER ACTIVATION: SPOTTER ACTIVATION IS NOT ANTICIPATED. CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 11:37 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 33 min |
| Sep 8, 12:08 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Sanborn | 32 min |
| Sep 8, 12:28 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 27 min |
| Sep 8, 1:24 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 31 min |
| Sep 8, 1:55 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 30 min |
| Sep 8, 2:10 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 30 min |
| Sep 8, 2:22 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 33 min |
| Sep 8, 2:25 PM CDT | Tornado Warning | FSD | Hutchinson, Turner | 35 min |
| Sep 8, 2:29 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 31 min |
| Sep 8, 3:13 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 32 min |
| Sep 8, 3:42 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 33 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.