Alert archive / South Dakota / Flash Flood Warnings in 2007
Flash Flood Warning 22, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 16, 2007, 5:20 PM CDT for Union County, South Dakota; Woodbury County, Iowa; Dakota County, Nebraska. It was in force for 115 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 16, 2007, 5:20 PM CDT (22:20 UTC)
- Expired
- Jun 16, 2007, 7:15 PM CDT
- In force
- 115 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Woodbury County, IA, Dakota County, NE, Union County, SD
The radar
The Sioux Falls radar (KFSD), 119 km from the middle of the area, began a volume at 22:21 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 |
|---|---|---|---|
| Jun 16, 5:25 PM CDT | FLASH FLOOD | North Sioux City, SD | PUBLIC REPORTED STREET FLOODING IN NORTH SIOUX CITY TO SHERIFF |
| Jun 16, 5:25 PM CDT | FLASH FLOOD | Sioux City, IA | CONTINUED STREET FLOODING IN DOWNTOWN SIOUX CITY |
| Jun 16, 5:30 PM CDT | FLASH FLOOD | South Sioux City, NE | STREETS...PARKING LOT...AND BASEBALL FIELDS FLOODED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 136 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
- 197 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KFSD 162221
FFWFSD
IAC193-NEC043-SDC127-170015-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
520 PM CDT SAT JUN 16 2007
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN DAKOTA COUNTY IN NORTHEAST NEBRASKA
NORTHWESTERN WOODBURY COUNTY IN NORTHWEST IOWA
SOUTHERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA
* UNTIL 715 PM CDT
* AT 513 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS PRODUCING INTENSE RAINFALL RATES OVER THE WARNED
AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE SIOUX
CITY METRO AREA AND JEFFERSON
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF URBAN
AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE
AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
LAT...LON 4241 9653 4264 9670 4266 9669 4268 9673
4269 9670 4266 9664 4265 9655 4256 9650
4256 9638 4236 9622
$$
MG1 follow-up statement
000
WGUS73 KFSD 162335
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
634 PM CDT SAT JUN 16 2007
IAC193-NEC043-SDC127-162344-
WOODBURY IA-DAKOTA NE-UNION SD-
634 PM CDT SAT JUN 16 2007
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
UNION...NORTHEASTERN DAKOTA AND NORTHWESTERN WOODBURY COUNTIES...
THE THUNDERSTORMS THAT HAD PRODUCED FLASH FLOODING IN THE SIOUX CITY
METRO AREA HAVE DISSIPATED OR MOVED OUT OF THE AREA. THEREFORE THE
FLASH FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 4241 9653 4264 9670 4266 9669 4268 9673
4269 9670 4266 9664 4265 9655 4256 9650
4256 9638 4236 9622
$$
MGThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 9:35 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 19 min |
| Jun 16, 12:20 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 26 min |
| Jun 16, 3:07 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 38 min |
| Jun 16, 3:39 PM CDT | Flash Flood Warning | FSD | Minnehaha | 2 hr |
| Jun 16, 12:48 PM CDT | Air Stagnation Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 18 hr |
| Jun 16, 5:53 PM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee | 2 hr |
| Jun 16, 6:08 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 37 min |
Nearby
Flash Flood Warnings in South Dakota, 2007Flash Flood Warnings in Iowa, 2007Flash Flood Warnings in Nebraska, 2007Every flash flood warning in 2007
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.