Alert archive / South Dakota / Flash Flood Warnings in 2016
Flash Flood Warning 5, NWS Aberdeen, SD
NWS Aberdeen, SD issued this flash flood warning at Aug 11, 2016, 11:28 PM CDT for Codington County, Hamlin County, South Dakota. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 11, 2016, 11:28 PM CDT (04:28 UTC)
- Expired
- Aug 12, 2016, 2:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Codington County, SD, Hamlin County, SD
The radar
The Aberdeen radar (KABR), 127 km from the middle of the area, began a volume at 04:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 11:31 PM CDT | FLASH FLOOD | Watertown, SD | WATER UP TO CURBS IN TOWN. A COUPLE OF CARS HAVE STALLED IN ROADWAYS. |
| Aug 11, 11:48 PM CDT | FLASH FLOOD | 3 Ese Watertown, SD | STREETS IMPASSABLE DUE TO STANDING WATER. CARS STALLED IN ROADWAYS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 4.5 hours before the alert went out and 98 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
- 873 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.9
The text
As transmitted.
438 WGUS53 KABR 120428 FFWABR SDC029-057-120730- /O.NEW.KABR.FF.W.0005.160812T0428Z-160812T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 1128 PM CDT THU AUG 11 2016 THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN CODINGTON COUNTY IN NORTHEASTERN SOUTH DAKOTA... HAMLIN COUNTY IN NORTHEASTERN SOUTH DAKOTA... * UNTIL 230 AM CDT * AT 1127 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... WATERTOWN...CASTLEWOOD...LAKE NORDEN...HAYTI...RAUVILLE... SANDY SHORE REC AREA...LAKE KAMPESKA...LAKE ALBERT...DEMPSTER... STONE BRIDGE...WATERTOWN CITY PARK...GOOSE LAKE...THOMAS... HAMLIN EDUCATION CENTER...LAKE POINSETT...CLAREMONT COLONY... MEMORIAL PARK CAMPING SITE AND PELICAN LAKE. LAT...LON 4454 9735 4499 9733 4498 9695 4454 9694 $$ SERR
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 12:25 AM CDT | Flash Flood Warning | ABR | Deuel, Hamlin | 3 hr |
| Aug 12, 12:37 AM CDT | Special Weather Statement | ABR | Deuel | 53 min |
| Aug 12, 2:30 AM CDT | Areal Flood Warning | ABR | Codington, Hamlin | 10 hr |
Nearby
Flash Flood Warnings in South Dakota, 2016Every flash flood warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.