Alert archive / South Dakota / Flash Flood Warnings in 2021
Flash Flood Warning 3, NWS Aberdeen, SD
NWS Aberdeen, SD issued this flash flood warning at Jun 8, 2021, 9:33 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2021, 9:33 PM MDT (03:33 UTC)
- Expired
- Jun 9, 2021, 5:30 AM MDT
- In force
- 8 hr
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Corson County, SD, Dewey County, SD
The radar
The Bismarck radar (KBIS), 155 km from the middle of the area, began a volume at 03:34 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 00:00Z, 3.6 hours before the alert went out and 157 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
- 113 J/kg
- Mixed-layer CIN
- -181 J/kg
- Mixed-layer LCL
- 2317 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
665
WGUS53 KABR 090333
FFWABR
SDC031-041-091130-
/O.NEW.KABR.FF.W.0003.210609T0333Z-210609T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Aberdeen SD
1033 PM CDT Tue Jun 8 2021
The National Weather Service in Aberdeen has issued a
* Flash Flood Warning for...
South Central Corson County in north central South Dakota...
Northwestern Dewey County in north central South Dakota...
* Until 530 AM MDT Wednesday.
* At 933 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Radar estimates up to 7 inches
of rain have fallen. Additional rainfall amounts of 1 to 2 inches
are possible in the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Isabel, Firesteel, southern Standing Rock Nation and northern
Cheyenne River Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4547 10154 4554 10153 4562 10117 4547 10114
4533 10140 4538 10149 4539 10149 4539 10147
4544 10147 4547 10147 4547 10149 4547 10150
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Parkin2 follow-up statements
702
WGUS73 KABR 090814
FFSABR
Flash Flood Statement
National Weather Service Aberdeen SD
314 AM CDT Wed Jun 9 2021
SDC031-041-091130-
/O.CON.KABR.FF.W.0003.000000T0000Z-210609T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Corson SD-Dewey SD-
214 AM MDT Wed Jun 9 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM MDT EARLY THIS
MORNING FOR SOUTH CENTRAL CORSON AND NORTHWESTERN DEWEY COUNTIES...
At 214 AM MDT, Doppler radar indicated thunderstorms continuing to
produce additional rain across the warned area. Up to 7 inches of
rain have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Isabel, Firesteel, southern Standing Rock Nation and northern
Cheyenne River Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4547 10154 4554 10153 4562 10117 4547 10114
4533 10140 4538 10149 4539 10149 4539 10147
4544 10147 4547 10147 4547 10149 4547 10150
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Dorn233
WGUS73 KABR 091123
FFSABR
Flash Flood Statement
National Weather Service Aberdeen SD
623 AM CDT Wed Jun 9 2021
SDC031-041-091133-
/O.EXP.KABR.FF.W.0003.000000T0000Z-210609T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Corson SD-Dewey SD-
523 AM MDT Wed Jun 9 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 530 AM MDT EARLY THIS MORNING
FOR SOUTH CENTRAL CORSON AND NORTHWESTERN DEWEY COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4547 10154 4554 10153 4562 10117 4547 10114
4533 10140 4538 10149 4539 10149 4539 10147
4544 10147 4547 10147 4547 10149 4547 10150
$$
DornThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 6:17 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 43 min |
| Jun 8, 6:22 PM MDT | Flash Flood Warning | ABR | Corson | 3 hr |
| Jun 8, 6:44 PM MDT | Flash Flood Warning | ABR | Corson, Dewey | 3 hr |
| Jun 8, 6:44 PM MDT | Special Weather Statement | ABR | Corson | 31 min |
| Jun 8, 7:02 PM MDT | Special Weather Statement | ABR | Corson | 28 min |
| Jun 8, 7:11 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 49 min |
| Jun 8, 7:21 PM MDT | Tornado Warning | ABR | Corson, Dewey | 24 min |
| Jun 8, 7:25 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 50 min |
| Jun 8, 7:44 PM MDT | Tornado Warning | ABR | Corson | 16 min |
| Jun 8, 8:11 PM MDT | Special Weather Statement | ABR | Corson | 34 min |
| Jun 8, 8:28 PM MDT | Severe Thunderstorm Warning | ABR | Dewey | 47 min |
| Jun 8, 9:12 PM MDT | Severe Thunderstorm Warning | ABR | Dewey | 36 min |
| Jun 8, 10:54 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 66 min |
| Jun 8, 11:58 PM MDT | Severe Thunderstorm Warning | ABR | Dewey, Jones, Stanley | 37 min |
| Jun 9, 12:03 AM MDT | Special Weather Statement | ABR | Corson, Dewey | 57 min |
| Jun 9, 12:40 AM MDT | Special Weather Statement | ABR | Jones, Stanley | 65 min |
Nearby
Flash Flood Warnings in South Dakota, 2021Every flash flood warning in 2021
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.