Alert archive / South Dakota / Flash Flood Warnings in 2013
Flash Flood Warning 8, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at May 27, 2013, 12:42 AM CDT for 6 counties in South Dakota; Lyon County, Plymouth County, Sioux County, Iowa. It was in force for 4 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
- May 27, 2013, 12:42 AM CDT (05:42 UTC)
- Expired
- May 27, 2013, 4:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lyon County, IA, Plymouth County, IA, Sioux County, IA, Clay County, SD, Lincoln County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 49 km from the middle of the area, began a volume at 05:42 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 |
|---|---|---|---|
| May 27, 2:00 AM CDT | FLASH FLOOD | 2 Sse Sioux Falls, SD | WATER INTO TUTHILL PARK |
| May 27, 2:30 AM CDT | FLASH FLOOD | Alton, IA | WATER IN BASEMENTS...FLOODED ROADS BETWEEN ALTON ASN HOSPERS, WATER OVER HIGHWAY 60...TRAFFIC DOWN TO ONE LANE IN SPOTS. |
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, 5.7 hours before the alert went out and 207 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
- 3377 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 966 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 16.4
The text
As transmitted, in the capitals the NWS used until 2016.
985
WGUS53 KFSD 270542
FFWFSD
IAC119-149-167-SDC027-083-099-125-127-135-270930-
/O.NEW.KFSD.FF.W.0008.130527T0542Z-130527T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1242 AM CDT MON MAY 27 2013
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
LYON COUNTY IN NORTHWEST IOWA
NORTHEASTERN CLAY COUNTY IN SOUTHEAST SOUTH DAKOTA
NORTHEASTERN YANKTON COUNTY IN SOUTHEAST SOUTH DAKOTA
NORTHERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA
PLYMOUTH COUNTY IN NORTHWEST IOWA
SIOUX COUNTY IN NORTHWEST IOWA
SOUTHERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA
TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA
* UNTIL 430 AM CDT
* AT 1237 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. WIDESPREAD ESTIMATED RATES OF 1 TO 2 INCHES PER HOUR
ARE OCCURRING. THEREFORE THESE AMOUNTS ARE EXPECTED ACROSS THE
AREA WITH HEAVIER AMOUNTS CERTAINLY POSSIBLE. THE BIG PROBLEM IS
THIS RAIN WILL FALL OVER ALREADY SATURATED GROUND FROM SATURDAY
NIGHTS RAINFALL.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BERESFORD...CANTON...HAWARDEN...LE MARS...ORANGE CITY...PARKER...
ROCK RAPIDS...SIOUX FALLS...AKRON...ALCESTER...ALTON...ALVORD...
BOYDEN...CENTERVILLE...CHANCELLOR...CRAIG...DAVIS...DOON...
FAIRVIEW...GEORGE...GRANVILLE...HARRISBURG...HARTFORD...HOSPERS...
HUDSON...HULL...HURLEY...INWOOD...IRETON AND LARCHWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 4272 9644 4301 9686 4318 9738 4368 9693
4354 9645 4350 9645 4350 9634 4335 9586
4258 9587
$$
MJF2 follow-up statements
556
WGUS73 KFSD 270637
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
137 AM CDT MON MAY 27 2013
IAC119-149-167-SDC027-083-099-125-127-135-270930-
/O.CON.KFSD.FF.W.0008.000000T0000Z-130527T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SIOUX IA-PLYMOUTH IA-LYON IA-MINNEHAHA SD-LINCOLN SD-CLAY SD-
TURNER SD-UNION SD-YANKTON SD-
137 AM CDT MON MAY 27 2013
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN YANKTON...
NORTHERN UNION...TURNER...NORTHEASTERN CLAY...LINCOLN...SOUTHERN
MINNEHAHA...LYON...PLYMOUTH AND SIOUX COUNTIES UNTIL 430 AM CDT...
AT 129 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH HEAVY RAINFALL ACROSS THE WARNED AREA. AT THIS
TIME...THE HEAVIEST RAINFALL WAS GENERALLY CONFINED TO THE SOUTHERN
HALF OF THIS WARNING...ALONG AND SOUTH OF THE HIGHWAY 18 CORRIDOR.
TO THE NORTH OF HIGHWAY 18 INCLUDING SIOUX FALLS...THE RAINFALL
RATES ARE LIGHTER...BUT THESE AREAS RECEIVED VERY HEAVY RAINFALL
SATURDAY NIGHT GIVING EXTREMELY SATURATED GROUND.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BERESFORD...CANTON...HAWARDEN...LE MARS...ORANGE CITY...PARKER...
ROCK RAPIDS...SIOUX FALLS...AKRON...ALCESTER...ALTON...CENTERVILLE...
DAVIS...GEORGE...HARRISBURG...HARTFORD...HURLEY...INWOOD...AND
LARCHWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER POOR DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 4272 9644 4301 9686 4318 9738 4368 9693
4354 9645 4350 9645 4350 9634 4335 9586
4258 9587
$$
MJF791
WGUS73 KFSD 270925
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
425 AM CDT MON MAY 27 2013
IAC119-149-167-SDC027-083-099-125-127-135-270940-
/O.EXP.KFSD.FF.W.0008.000000T0000Z-130527T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SIOUX IA-PLYMOUTH IA-LYON IA-MINNEHAHA SD-LINCOLN SD-CLAY SD-
TURNER SD-UNION SD-YANKTON SD-
425 AM CDT MON MAY 27 2013
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHEASTERN
YANKTON...NORTHERN UNION...TURNER...NORTHEASTERN CLAY...LINCOLN...
SOUTHERN MINNEHAHA...LYON...PLYMOUTH AND SIOUX COUNTIES WILL BE
ALLOWED TO EXPIRE AT 430 AM CDT...
MODERATE RAINFALL STILL LINGERS OVER THE AREA...THEREFORE AN AREAL
FLOODING WARNING WILL BE ISSUED SHORTLY FOR THE REMAINING FLOODING
THREAT.
LAT...LON 4272 9644 4301 9686 4318 9738 4368 9693
4354 9645 4350 9645 4350 9634 4335 9586
4258 9587
$$
MJFThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 4:46 AM CDT | Areal Flood Warning | FSD | Clay, Lincoln, Minnehaha, Turner, Union | 6 hr |
| May 27, 6:57 AM CDT | Flash Flood Watch | FSD | Clay, Lincoln, Union | 22 hr |
| May 26, 10:18 PM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 6 hr |
| May 27, 2:01 AM CDT | River Flood Warning | FSD | Cherokee | 3 days |
| May 27, 2:33 AM CDT | River Flood Warning | FSD | Plymouth | 56 hr |
| May 27, 3:59 AM CDT | River Flood Warning | FSD | Lyon | 8 hr |
| May 27, 4:36 AM CDT | Areal Flood Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 9 hr |
| May 27, 4:51 AM CDT | Areal Flood Warning | FSD | Lyon, Plymouth, Sioux | 6 hr |
| May 27, 9:13 AM CDT | River Flood Warning | FSD | Plymouth | 49 hr |
| May 27, 9:13 AM CDT | River Flood Warning | FSD | Woodbury | 3 days |
| May 27, 10:19 AM CDT | River Flood Warning | FSD | Monona, Woodbury | 11 hr |
| May 27, 10:34 AM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien, Plymouth, Sioux | 12 hr |
| May 27, 10:40 AM CDT | Areal Flood Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien, Plymouth, Sioux | 24 hr |
Nearby
Flash Flood Warnings in South Dakota, 2013Flash Flood Warnings in Iowa, 2013Every flash flood warning in 2013
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.