Alert archive / Iowa / Flash Flood Warnings in 2015
Flash Flood Warning 3, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 6, 2015, 10:11 PM CDT for Plymouth County, Woodbury County, Iowa; Union County, South Dakota; Dakota County, Dixon County, Nebraska. It was in force for 3 hr. 4 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 6, 2015, 10:11 PM CDT (03:11 UTC)
- Expired
- Jun 7, 2015, 1:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Plymouth County, IA, Woodbury County, IA, Dakota County, NE, Dixon County, NE, Union County, SD
The radar
The Sioux Falls radar (KFSD), 117 km from the middle of the area, began a volume at 03:13 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 6, 10:50 PM CDT | FLASH FLOOD | 1 Nw Sioux City, IA | 18TH STREET AND JACKSON AVE STREET FLOODING. |
| Jun 6, 10:50 PM CDT | FLASH FLOOD | North Sioux City, SD | RIVERSIDE AREA STREET FLOODING. |
| Jun 6, 10:55 PM CDT | FLASH FLOOD | 1 W Sioux City, IA | STREET FLOODING ON PEARL STREET SOUTH OF 9TH AVE. |
| Jun 6, 11:20 PM CDT | HEAVY RAIN 3.8 | Concord, NE |
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 00:00Z, 3.2 hours before the alert went out and 137 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
- 1554 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 388 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 13.1
The text
As transmitted, in the capitals the NWS used until 2016.
249
WGUS53 KFSD 070311
FFWFSD
IAC149-193-NEC043-051-SDC127-070615-
/O.NEW.KFSD.FF.W.0003.150607T0311Z-150607T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1011 PM CDT SAT JUN 6 2015
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WOODBURY COUNTY IN WEST CENTRAL IOWA...
PLYMOUTH COUNTY IN NORTHWESTERN IOWA...
DIXON COUNTY IN NORTHEASTERN NEBRASKA...
DAKOTA COUNTY IN NORTHEASTERN NEBRASKA...
SOUTHEASTERN UNION COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
* UNTIL 115 AM CDT
* AT 1010 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SIOUX CITY...LE MARS...PONCA...SOUTH SIOUX CITY...SERGEANT BLUFF...
NORTH SIOUX CITY...DAKOTA CITY...REMSEN...MOVILLE...WAKEFIELD...
KINGSLEY...HINTON...LAWTON...EMERSON...MERRILL...ANTHON...HOMER...
JEFFERSON...ALLEN AND PIERSON.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DONT 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 4246 9701 4290 9629 4291 9586 4228 9585
4227 9702
$$
GILLISPIE2 follow-up statements
896
WGUS73 KFSD 070410
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1110 PM CDT SAT JUN 6 2015
IAC149-193-NEC043-051-SDC127-070615-
/O.CON.KFSD.FF.W.0003.000000T0000Z-150607T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WOODBURY IA-PLYMOUTH IA-DIXON NE-DAKOTA NE-UNION SD-
1110 PM CDT SAT JUN 6 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT FOR
WOODBURY...PLYMOUTH...DIXON...DAKOTA AND SOUTHEASTERN UNION
COUNTIES...
AT 1108 PM CDT...LOCAL LAW ENFORCEMENT REPORTED NUMEROUS STREETS
FLOODING IN THE SIOUX CITY METRO AREA AS A RESULT OF HEAVY RAIN. UP
TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS
OCCURRING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4246 9701 4290 9629 4291 9586 4228 9585
4227 9702
$$
GILLISPIE117
WGUS73 KFSD 070521
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1221 AM CDT SUN JUN 7 2015
IAC149-193-NEC043-051-SDC127-070531-
/O.CAN.KFSD.FF.W.0003.000000T0000Z-150607T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WOODBURY IA-PLYMOUTH IA-DIXON NE-DAKOTA NE-UNION SD-
1221 AM CDT SUN JUN 7 2015
...THE FLASH FLOOD WARNING FOR WOODBURY...PLYMOUTH...DIXON...DAKOTA
AND SOUTHEASTERN UNION COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.
LAT...LON 4246 9701 4290 9629 4291 9586 4228 9585
4227 9702
$$
GILLISPIEThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 10:32 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 27 min |
| Jun 6, 7:02 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 24 min |
| Jun 6, 7:31 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 44 min |
| Jun 6, 7:44 PM CDT | Tornado Warning | FSD | Clay | 31 min |
| Jun 6, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 38 min |
| Jun 6, 8:30 PM CDT | Tornado Warning | FSD | Clay, Turner, Yankton | 13 min |
| Jun 6, 9:23 PM CDT | Flash Flood Warning | FSD | Lake, Moody | 3 hr |
| Jun 7, 10:47 AM CDT | River Flood Warning | FSD | Minnehaha, Moody | 40 hr |
| Jun 7, 4:08 PM CDT | Flash Flood Warning | FSD | Beadle | 3 hr |
| Jun 7, 4:34 PM CDT | Tornado Warning | FSD | Miner | 12 min |
| Jun 7, 4:52 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook, Miner | 23 min |
Nearby
Flash Flood Warnings in Iowa, 2015Flash Flood Warnings in Nebraska, 2015Flash Flood Warnings in South Dakota, 2015Every flash flood warning in 2015
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.