Alert archive / Iowa / Flash Flood Warnings in 2007
Flash Flood Warning 19, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 10, 2007, 5:27 PM CDT for Lyon County, Sioux County, Iowa. It was in force for 93 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 10, 2007, 5:27 PM CDT (22:27 UTC)
- Expired
- Jun 10, 2007, 7:00 PM CDT
- In force
- 93 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Lyon County, IA, Sioux County, IA
The radar
The Sioux Falls radar (KFSD), 59 km from the middle of the area, began a volume at 22:29 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.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.5 hours before the alert went out and 213 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
- 896 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 1337 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KFSD 102228 FFWFSD IAC119-167-110000- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 527 PM CDT SUN JUN 10 2007 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL LYON COUNTY IN NORTHWEST IOWA NORTH CENTRAL SIOUX COUNTY IN NORTHWEST IOWA * UNTIL 700 PM CDT * AT 525 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM NEAR DOON...OR ABOUT 13 MILES SOUTH OF ROCK RAPIDS...MOVING EAST AT 5 MPH. * THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF BETWEEN DOON AND HULL. UP TO 3 INCHES OF RAIN HAS FALLEN NEAR THE SIOUX AND LYON COUNTY LINE WITH ADDITIONAL RAINFALL OF UP TO AN INCH EXPECTED. RUNOFF FROM THIS RAINFALL WILL CONTINUE TO PRODUCE WATER OVER ROADS AND RAPID RISES IN SMALL CREEKS. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. LAT...LON 4321 9633 4319 9615 4331 9609 4333 9628 $$ SCHUMACHER
1 follow-up statement
000 WGUS73 KFSD 102312 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 609 PM CDT SUN JUN 10 2007 IAC119-167-110000- LYON IA-SIOUX IA- 609 PM CDT SUN JUN 10 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR NORTH CENTRAL SIOUX AND SOUTH CENTRAL LYON COUNTIES... AT 609 PM CDT...THE STORM WHICH HAD PRODUCED THE HEAVY RAINFALL HAD DISSIPATED. HOWEVER...RADAR HAS ESTIMATED 2 TO 4 INCHES OF RAIN HAS FALLEN IN THE VICINITY OF ROCK VALLEY AND DOON. THEREFORE... CONTINUED WATER RUNOFF CONTINUES TO PRODUCE THE THREAT OF WATER OVER THE RURAL ROADWAYS. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING FOR NORTHWEST IOWA. LAT...LON 4321 9633 4319 9615 4331 9609 4333 9628 $$ SCHUMACHER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 1:39 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 36 min |
| Jun 10, 3:58 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 47 min |
| Jun 10, 4:32 PM CDT | Flash Flood Warning | FSD | Lyon, Sioux | 58 min |
| Jun 10, 4:42 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 48 min |
Nearby
Flash Flood Warnings in Iowa, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.