Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 32, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Sep 15, 2016, 4:37 PM CDT for Nobles County, Minnesota; Lyon County, Osceola County, Sioux County, Iowa; Lincoln 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 outline as issued.
The facts
- Issued
- Sep 15, 2016, 4:37 PM CDT (21:37 UTC)
- Expired
- Sep 15, 2016, 7:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lyon County, IA, Osceola County, IA, Sioux County, IA, Nobles County, MN, Lincoln County, SD
The radar
The Sioux Falls radar (KFSD), 77 km from the middle of the area, began a volume at 21:37 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
Omaha, NE (KOAX), launched 12:00Z, 9.6 hours before the alert went out and 225 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
- 696 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
479
WGUS53 KFSD 152137
FFWFSD
IAC119-143-167-MNC105-SDC083-160030-
/O.NEW.KFSD.FF.W.0032.160915T2137Z-160916T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
437 PM CDT THU SEP 15 2016
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
LYON COUNTY IN NORTHWESTERN IOWA...
NORTHERN SIOUX COUNTY IN NORTHWESTERN IOWA...
OSCEOLA COUNTY IN NORTHWESTERN IOWA...
SOUTHERN NOBLES COUNTY IN SOUTHWESTERN MINNESOTA...
SOUTHEASTERN LINCOLN COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
* UNTIL 730 PM CDT
* AT 434 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. TWO TO
FOUR INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA. THIS IS AN EXTENSION OF THE PREVIOUS FLASH FLOOD
WARNING THAT WAS IN EFFECT FOR THIS AREA THROUGH 445 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4326 9542 4326 9587 4311 9600 4309 9668
4337 9658 4364 9552 4345 9543
$$
GILLISPIEThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 1:40 PM CDT | Flash Flood Warning | FSD | Nobles, Rock | 3 hr |
| Sep 15, 4:07 PM CDT | Flash Flood Warning | FSD | Jackson, Nobles | 3 hr |
| Sep 15, 11:34 AM CDT | Flash Flood Warning | FSD | Lyon | 3 hr |
| Sep 15, 2:11 PM CDT | Flash Flood Warning | FSD | Lyon | 3 hr |
| Sep 15, 5:53 PM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 3 hr |
Nearby
Flash Flood Warnings in Iowa, 2016Flash Flood Warnings in Minnesota, 2016Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.