Alert archive / South Dakota / Flash Flood Warnings in 2019
Flash Flood Warning 13, NWS Rapid City, SD
NWS Rapid City, SD issued this flash flood warning at Aug 2, 2019, 2:43 PM MDT for Custer 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
- Aug 2, 2019, 2:43 PM MDT (20:43 UTC)
- Expired
- Aug 2, 2019, 5:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
- Flood severity
- None
County Custer County, SD
The radar
The Rapid City radar (KUDX), 70 km from the middle of the area, began a volume at 20:45 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 12:00Z, 8.7 hours before the alert went out and 367 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
- 733 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 568 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 Aug 2, 1:34 PM MDT, 1 hour 9 minutes earlier.
Area forecast discussion, Aug 2, 1:34 PM MDT, 1 hour 9 minutes before
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</html>Hazardous weather outlook, Aug 2, 3:26 AM MDT, 11 hours 17 minutes before
Hazardous Weather Outlook National Weather Service Rapid City SD 326 AM MDT Fri Aug 2 2019 SDZ002-013-014-024>032-041>044-046-047-049-072>074-031300- Perkins-Northern Meade Co Plains-Ziebach-Northern Black Hills- Northern Foot Hills-Rapid City-Southern Foot Hills- Central Black Hills-Southern Black Hills-Custer Co Plains- Pennington Co Plains-Haakon-Fall River-Oglala Lakota-Jackson- Bennett-Mellette-Todd-Tripp-Sturgis/Piedmont Foot Hills- Southern Meade Co Plains-Hermosa Foot Hills- 326 AM MDT Fri Aug 2 2019 /426 AM CDT Fri Aug 2 2019/ This Hazardous Weather Outlook is for portions of northwestern South Dakota...south central South Dakota...southwestern South Dakota...and the Black Hills of South Dakota. .DAY ONE...Today and Tonight There is a chance of thunderstorms today and tonight. Severe thunderstorms are not expected at this time. However, locally heavy rain is possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a chance of thunderstorms each day. There is a marginal risk of severe thunderstorms Saturday and Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ001-012-WYZ054>058-071-031300- Harding-Butte-Northern Campbell-Southern Campbell-Western Crook- Wyoming Black Hills-Weston-Northeastern Crook- 326 AM MDT Fri Aug 2 2019 This Hazardous Weather Outlook is for portions of northwestern South Dakota...northeast Wyoming...and the Black Hills of Wyoming. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a chance of thunderstorms each day. There is a marginal risk of severe thunderstorms Saturday and Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity
In the hours before
Local storm report, Aug 2, 9:31 AM MDT, 5 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
931 AM MDT FRI AUG 02 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 3 W SCENIC 43.78N 102.62W
08/02/2019 M3.29 INCH PENNINGTON SD COCORAHS
HEAVY RAIN BEGAN AROUND 10PM AND ENDED AFTER 2AM
&&
EAGANLocal storm report, Aug 2, 9:32 AM MDT, 5 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
932 AM MDT FRI AUG 02 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN 12 S QUINN 43.82N 102.13W
08/02/2019 M1.35 INCH PENNINGTON SD COCORAHS
&&
EAGANLocal storm report, Aug 2, 9:33 AM MDT, 5 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
933 AM MDT FRI AUG 02 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 4 WSW WANBLEE 43.55N 101.73W
08/02/2019 M3.43 INCH JACKSON SD COCORAHS
&&
EAGANSpecial weather statement, Aug 2, 1:12 PM MDT, 1 hour 31 minutes before
Special Weather Statement National Weather Service Rapid City SD 112 PM MDT Fri Aug 2 2019 SDZ029-021945- Southern Black Hills SD- 112 PM MDT Fri Aug 2 2019 ...SPECIAL WEATHER STATEMENT... At 111 PM MDT, Doppler radar was tracking a strong thunderstorm near Pringle, or 9 miles south of Custer, moving southeast at 10 mph. Pea to half inch hail will be possible with this storm. Locations impacted include... Custer, Pringle, Blue Bell, western Wind Cave National Park, Jewel Cave National Monument and southern Custer State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4375 10384 4381 10375 4368 10336 4350 10354 TIME...MOT...LOC 1911Z 297DEG 10KT 4363 10356 Eagan
Special weather statement, Aug 2, 1:45 PM MDT, 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 |
|---|---|---|---|---|
| Aug 1, 6:12 PM MDT | Special Weather Statement | UNR | Haakon | 33 min |
| Aug 1, 6:43 PM MDT | Special Weather Statement | UNR | Haakon | 32 min |
| Aug 1, 8:09 PM MDT | Special Weather Statement | UNR | Pennington | 36 min |
| Aug 1, 9:41 PM MDT | Special Weather Statement | UNR | Pennington | 34 min |
| Aug 1, 9:55 PM MDT | Severe Thunderstorm Warning | UNR | Jackson, Oglala Lakota, Pennington | 52 min |
| Aug 1, 10:41 PM MDT | Flash Flood Warning | UNR | Jackson, Oglala Lakota, Pennington | 6 hr |
| Aug 2, 4:44 AM MDT | Areal Flood Advisory | UNR | Jackson, Oglala Lakota, Pennington | 6 hr |
| Aug 2, 1:12 PM MDT | Special Weather Statement | UNR | Custer | 33 min |
| Aug 2, 1:38 PM MDT | River Flood Warning | UNR | Haakon, Ziebach | 66 hr |
| Aug 2, 1:38 PM MDT | River Flood Warning | UNR | Meade, Pennington | 34 hr |
| Aug 2, 1:45 PM MDT | Special Weather Statement | UNR | Custer | 45 min |
| Aug 2, 2:27 PM MDT | Special Weather Statement | UNR | Custer | 33 min |
| Aug 2, 2:56 PM MDT | Special Weather Statement | UNR | Custer | 49 min |
| Aug 2, 5:46 PM MDT | Areal Flood Warning | UNR | Custer | 18 hr |
Nearby
Flash Flood Warnings in South Dakota, 2019Every flash flood warning in 2019
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.