Alert archive / Iowa / Flash Flood Warnings in 2014
Flash Flood Warning 34, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 26, 2014, 5:41 PM CDT for Woodbury County, Iowa. 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
- Jun 26, 2014, 5:41 PM CDT (22:41 UTC)
- Expired
- Jun 26, 2014, 8:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
County Woodbury County, IA
The radar
The Omaha radar (KOAX), 133 km from the middle of the area, began a volume at 22:41 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 26, 6:25 PM CDT | HEAVY RAIN 4.6 | 7 Nw Anthon, IA | RAINFALL AMOUNT FELL IN ABOUT 2 HOURS. |
| Jun 26, 6:48 PM CDT | HEAVY RAIN 4.5 | 4 E Moville, IA |
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, 10.7 hours before the alert went out and 133 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
- 1326 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
591 WGUS53 KFSD 262241 FFWFSD IAC193-270130- /O.NEW.KFSD.FF.W.0034.140626T2241Z-140627T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 541 PM CDT THU JUN 26 2014 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL WOODBURY COUNTY IN WEST CENTRAL IOWA * UNTIL 830 PM CDT * AT 537 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO TO THREE INCHES OF RAINFALL ACROSS THE WARNED AREA. STORMS CONTINUE TO TRAIN ACROSS THE AREA...LEADING TO ADDITIONAL RAINFALL ACROSS THE WARNED AREA. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ANTHON...CORRECTIONVILLE...MOVILLE AND PIERSON. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 9615 4256 9576 4237 9574 4235 9613 $$ BT
1 follow-up statement
701 WGUS73 KFSD 270025 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 725 PM CDT THU JUN 26 2014 IAC193-270041- /O.CAN.KFSD.FF.W.0034.000000T0000Z-140627T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WOODBURY IA- 725 PM CDT THU JUN 26 2014 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL WOODBURY COUNTY IS CANCELLED... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED... PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 4256 9615 4256 9576 4237 9574 4235 9613 $$ BT
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 3:46 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 33 min |
| Jun 26, 5:34 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 41 min |
| Jun 26, 5:37 PM CDT | Flash Flood Warning | FSD | Lyon, O'Brien, Sioux | 3 hr |
| Jun 26, 6:08 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 23 min |
Nearby
Flash Flood Warnings in Iowa, 2014Every flash flood warning in 2014
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.