Alert archive / South Dakota / Flash Flood Warnings in 2001
Flash Flood Warning 3, NWS Rapid City, SD
NWS Rapid City, SD issued this flash flood warning at Jul 15, 2001, 1:26 PM MDT for Pennington County, South Dakota. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 15, 2001, 1:26 PM MDT (19:26 UTC)
- Expired
- Jul 15, 2001, 6:30 PM MDT
- In force
- 5 hr
- Issued by
- NWS Rapid City, SD
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pennington County, SD
The radar
The Rapid City radar (KUDX), 13 km from the middle of the area, began a volume at 19:28 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 7.4 hours before the alert went out and 349 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
- 414 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 958 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -129 m²/s²
- 0-3 km storm-relative helicity
- -37 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 flash flood 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 flash flood warning went out at Jul 15, 12:40 PM MDT, 46 minutes earlier.
Area forecast discussion, Jul 15, 12:40 PM MDT, 46 minutes before
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Special weather statement, Jul 15, 10:40 AM MDT, 2 hours 46 minutes before
SDZ001-002-012>014-024>032-041>044-046-047-049-WYZ054>058-151945- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 1040 AM MDT SUN JUL 15 2001 ...SLIGHT RISK OF SEVERE THUNDERSTORMS... THUNDERSTORMS ARE EXPECTED OVER NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA THIS AFTERNOON AND EVENING...WITH A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE REGION. THE MAIN THREATS FROM THE SEVERE THUNDERSTORMS WILL BE HAIL LARGER THAN 3/4 INCH AND STRAIGHT LINE WINDS GREATER THAN 60 MPH. .DISCUSSION...AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE REGION THIS AFTERNOON AND EVENING. THIS TROUGH WILL COMBINE WITH ABUNDANT MOISTURE AND AN UNSTABLE ATMOSPHERE TO PRODUCE SCATTERED THUNDERSTORMS ACROSS THE REGION THIS AFTERNOON AND EVENING. A FEW OF THESE STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. COUNTIES INCLUDED IN THIS OUTLOOK ARE...CUSTER...TRIPP...BENNETT... SHANNON...JACKSON.&..ZIEBACH...PERKINS...MEADE...BUTTE...HARDING... CROOK...CAMPBELL...LAWRENCE...MELLETTE...TODD...WESTON...HAAKON... FALL RIVER AND PENNINGTON. WCJIN-WYNE CZEPYHA
Local storm report, Jul 15, 12:42 PM MDT, 44 minutes before
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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 |
|---|---|---|---|---|
| Jul 15, 12:23 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 52 min |
| Jul 15, 12:36 PM MDT | Severe Thunderstorm Warning | UNR | Ziebach | 54 min |
| Jul 15, 1:10 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 50 min |
| Jul 15, 1:25 PM MDT | Severe Thunderstorm Warning | UNR | Haakon | 50 min |
| Jul 15, 2:12 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 63 min |
| Jul 15, 5:57 PM MDT | Severe Thunderstorm Warning | UNR | Perkins | 63 min |
| Jul 15, 3:45 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 45 min |
Nearby
Flash Flood Warnings in South Dakota, 2001Every flash flood warning in 2001
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.