Alert archive / Iowa / Flash Flood Warnings in 2008
Flash Flood Warning 21, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 6, 2008, 4:41 PM CDT for Buena Vista County, Cherokee County, Ida County, Iowa. It was in force for 100 min. 1 report 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
- Jul 6, 2008, 4:41 PM CDT (21:41 UTC)
- Expired
- Jul 6, 2008, 6:21 PM CDT
- In force
- 100 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Buena Vista County, IA, Cherokee County, IA, Ida County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 6:00 PM CDT | FLASH FLOOD | 5 S Storm Lake, IA | WATER ACROSS ROAD FROM BOYER RIVER TRIBUTARY |
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, 9.7 hours before the alert went out and 154 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
- 2155 J/kg
- Mixed-layer CIN
- -356 J/kg
- Mixed-layer LCL
- 1374 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KFSD 062142
FFWFSD
IAC021-035-093-062345-
/O.NEW.KFSD.FF.W.0021.080706T2141Z-080706T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
441 PM CDT SUN JUL 6 2008
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN BUENA VISTA COUNTY IN NORTHWEST IOWA
SOUTHEASTERN CHEROKEE COUNTY IN NORTHWEST IOWA
NORTHERN IDA COUNTY IN NORTHWEST IOWA
* UNTIL 645 PM CDT
* AT 436 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
NUMEROUS THUNDERSTORMS PRODUCING HEAVY RAINS OVER THE WARNED
AREAS. RAINFALL RATES OF 1 TO 2 INCHES CAN BE EXPECTED.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
TRUESDALE...STORM LAKE...QUIMBY...NEWELL...LAKESIDE...ALTA AND
ALBERT CITY
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
LAT...LON 4256 9539 4249 9538 4247 9533 4241 9533
4238 9568 4247 9568 4248 9575 4256 9575
4256 9582 4259 9582 4281 9491 4256 9491
TIME...MOT...LOC 2141Z 180DEG 0KT 4258 9533
$$
CJ2 follow-up statements
000
WGUS73 KFSD 062220
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
520 PM CDT SUN JUL 6 2008
IAC021-035-093-062345-
/O.CON.KFSD.FF.W.0021.000000T0000Z-080706T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE IA-BUENA VISTA IA-IDA IA-
520 PM CDT SUN JUL 6 2008
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHERN IDA...SOUTHERN BUENA VISTA AND SOUTHEASTERN CHEROKEE
COUNTIES...
AT 518 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE NUMEROUS THUNDERSTORMS PRODUCING HEAVY RAINS. THE STORMS
WERE MOVING TOWARDS THE EAST AT 15 MPH.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SUNDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND
NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA.
LAT...LON 4256 9539 4249 9538 4247 9533 4241 9533
4238 9568 4247 9568 4248 9575 4256 9575
4256 9582 4259 9582 4281 9491 4256 9491
TIME...MOT...LOC 2220Z 180DEG 0KT 4258 9533
$$
CJ000
WGUS73 KFSD 062321
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
621 PM CDT SUN JUL 6 2008
IAC021-035-093-062331-
/O.CAN.KFSD.FF.W.0021.000000T0000Z-080706T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE IA-BUENA VISTA IA-IDA IA-
621 PM CDT SUN JUL 6 2008
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN IDA...
SOUTHERN BUENA VISTA AND SOUTHEASTERN CHEROKEE COUNTIES...
THE HEAVIEST RAINS HAVE MOVED OUT OF THE WARNED AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SUNDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND
NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA.
LAT...LON 4256 9539 4249 9538 4247 9533 4241 9533
4238 9568 4247 9568 4248 9575 4256 9575
4256 9582 4259 9582 4281 9491 4256 9491
TIME...MOT...LOC 2321Z 180DEG 0KT 4258 9533
$$
CJThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:52 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 38 min |
| Jul 6, 4:02 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 43 min |
| Jul 6, 4:29 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
| Jul 6, 4:34 PM CDT | Flash Flood Warning | FSD | Cherokee, Woodbury | 116 min |
| Jul 6, 4:41 PM CDT | Tornado Warning | FSD | Plymouth, Woodbury | 34 min |
| Jul 6, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 40 min |
| Jul 6, 5:11 PM CDT | Tornado Warning | FSD | Plymouth | 34 min |
| Jul 6, 5:14 PM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee, Plymouth | 86 min |
Nearby
Flash Flood Warnings in Iowa, 2008Every flash flood warning in 2008
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.