Alert archive / South Dakota / Tornado Warnings in 1997
Tornado Warning 10, NWS Rapid City, SD
NWS Rapid City, SD issued this tornado warning at Aug 13, 1997, 4:58 PM CDT for Mellette 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
- Aug 13, 1997, 4:58 PM CDT (21:58 UTC)
- Expired
- Aug 13, 1997, 5:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Rapid City, SD
- Area
- Whole counties
County Mellette County, SD
The radar
The Rapid City radar (KUDX), 177 km from the middle of the area, began a volume at 21:58 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 4:50 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 10.0 hours before the alert went out and 179 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
- 37 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1364 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Aug 13, 10:25 AM CDT, 6 hours 33 minutes earlier.
Area forecast discussion, Aug 13, 10:25 AM CDT, 6 hours 33 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 925 AM MDT WED AUG 13 1997 I UPDATED NORTHWEST SOUTH DAKOTA FOR MOSTLY CLOUDY INSTEAD OF INCREASING CLOUDS. WATER VAPOR AND VISIBLE IMAGERY INDICATING DRY PUNCH MOVING IN FROM WYOMING...SO UPDATED SOUTHWEST SOUTH DAKOTA FOR PARTLY CLOUDY SKIES AND DROPPED PRECIPITATION CHANCES. NUMEROUS LITTLE WAVES SHOWING UP IN WATER VAPOR SO WITH HEATING AND INCREASING INSTABILITY... AFTERNOON CONVECTION A GOOD POSSIBILITY OVER THE BLACK HILLS AND SOUTHWEST. TEMPERATURES SEEM ON TRACK. .UNR...NONE. FRANZEN
In the hours before
Local storm report, Aug 13, 3:25 PM CDT, 1 hour 33 minutes before
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</html>Local storm report, Aug 13, 3:28 PM CDT, 1 hour 30 minutes before
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<div class="status" id="status">Temporary Notice</div>
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</html>The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 2:22 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 63 min |
| Aug 13, 3:20 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 60 min |
| Aug 13, 3:26 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 59 min |
| Aug 13, 4:09 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 61 min |
| Aug 13, 4:24 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 61 min |
| Aug 13, 4:37 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 63 min |
| Aug 13, 4:41 PM CDT | Severe Thunderstorm Warning | UNR | Mellette | 49 min |
| Aug 13, 5:11 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 64 min |
| Aug 13, 5:25 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 50 min |
| Aug 13, 5:31 PM CDT | Severe Thunderstorm Warning | UNR | Mellette | 49 min |
| Aug 13, 5:38 PM CDT | Severe Thunderstorm Warning | UNR | Haakon | 47 min |
| Aug 13, 2:49 PM CDT | Severe Thunderstorm Warning | UNR | Crook | 61 min |
Nearby
Tornado Warnings in South Dakota, 1997Every tornado warning in 1997Tornadoes 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.