Alert archive / South Dakota / Flash Flood Warnings in 2008
Flash Flood Warning 7, NWS Rapid City, SD
NWS Rapid City, SD issued this flash flood warning at Jul 18, 2008, 5:00 AM MDT for Fall River County, South Dakota. It was in force for 3 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 18, 2008, 5:00 AM MDT (11:00 UTC)
- Expired
- Jul 18, 2008, 8:00 AM MDT
- In force
- 3 hr
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
- Flood severity
- None
County Fall River County, SD
The radar
The Rapid City radar (KUDX), 113 km from the middle of the area, began a volume at 10:58 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 11.0 hours before the alert went out and 336 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
- 173 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -107 m²/s²
- 0-3 km storm-relative helicity
- -86 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
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 18, 2:44 AM MDT, 2 hours 16 minutes earlier.
Area forecast discussion, Jul 18, 2:44 AM MDT, 2 hours 16 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 747 AM MDT THU JUL 17 2008 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-181000- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 747 AM MDT (847 AM CDT) THU JUL 17 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE AREA TODAY. WIDESPREAD SEVERE WEATHER IS NO LONGER ANTICIPATED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AN ACTIVE SEVERE WEATHER PATTERN IS EXPECTED FRIDAY...WITH A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA. LARGE HAIL AND AN ISOLATED TORNADO WILL BE THE MAIN THREATS OVER NORTHEASTERN WYOMING...WHILE LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE MAIN THREATS LATER FRIDAY EVENING AS THE STORMS DEVELOP INTO WESTERN SOUTH DAKOTA. SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN ON SATURDAY...WITH THE POSSIBILITY OF ADDITIONAL SEVERE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY.
In the hours before
Local storm report, Jul 18, 1:02 AM MDT, 3 hours 58 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 18, 3:30 AM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 60 min |
| Jul 18, 3:41 AM MDT | Flash Flood Watch | UNR | Butte, Custer, Fall River, Haakon, Harding, Jackson and 6 more | 25 hr |
| Jul 18, 4:22 AM MDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 53 min |
| Jul 18, 7:01 AM MDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 59 min |
| Jul 18, 12:29 PM MDT | Areal Flood Advisory | UNR | Custer, Fall River | 6 hr |
| Jul 18, 3:00 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 60 min |
| Jul 18, 3:42 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 63 min |
| Jul 18, 4:32 PM MDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 58 min |
| Jul 18, 4:42 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 63 min |
| Jul 18, 5:15 PM MDT | Areal Flood Warning | UNR | Fall River | 5 hr |
| Jul 18, 5:21 PM MDT | Severe Thunderstorm Warning | UNR | Perkins | 54 min |
| Jul 18, 5:33 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 57 min |
| Jul 18, 5:40 PM MDT | Severe Thunderstorm Warning | UNR | Fall River | 65 min |
| Jul 18, 5:55 PM MDT | Severe Thunderstorm Warning | UNR | Perkins | 43 min |
| Jul 17, 6:26 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 64 min |
| Jul 17, 8:07 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 68 min |
| Jul 18, 12:40 AM MDT | Areal Flood Advisory | UNR | Crook | 3 hr |
| Jul 18, 4:05 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 55 min |
| Jul 18, 4:55 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Weston | 18 min |
| Jul 18, 5:27 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 63 min |
Nearby
Flash Flood Warnings in South Dakota, 2008Every flash flood warning in 2008
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.