Alert archive / Nebraska / Flash Flood Warnings in 2005
Flash Flood Warning 9, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at May 31, 2005, 5:14 PM CDT for Dixon County, Nebraska; Clay County, South Dakota. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 31, 2005, 5:14 PM CDT (22:14 UTC)
- Expired
- May 31, 2005, 8:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
Counties Dixon County, NE, Clay County, SD
The radar
The Sioux Falls radar (KFSD), 94 km from the middle of the area, began a volume at 22:14 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, 10.2 hours before the alert went out and 166 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KFSD 312214
FFWFSD
NEC051-SDC027-010115-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
514 PM CDT TUE MAY 31 2005
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN DIXON COUNTY IN NORTHEAST NEBRASKA
SOUTHEASTERN CLAY COUNTY IN SOUTHEAST SOUTH DAKOTA
* UNTIL 815 PM CDT
* AT 514 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A PERSISTENT BAND OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAINFALL
CAPABLE OF PRODUCING FLASH FLOODING FROM NEAR BERESFORD SOUTHWARD
TO NEAR MASKELL...MOVING EAST AT 10 MPH.
AROUND 2 INCHES OF RAINFALL WAS REPORTED IN VERMILLION THROUGH 5
PM...RESULTING IN SOME STREET FLOODING. RAINFALL IS EXPECTED TO
CONTINUE THROUGH 6 PM...AND WILL BE MODERATE TO HEAVY AT TIMES.
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.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.
LAT...LON 4260 9701 4271 9682 4295 9681 4290 9694
4276 9700
$$
CHAPMAN2 follow-up statements
000
WGUS73 KFSD 312346
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
645 PM CDT TUE MAY 31 2005
NEC051-SDC027-010115-
DIXON NE-CLAY SD-
645 PM CDT TUE MAY 31 2005
...A FLASH FLOOD WARNING CONTINUES UNTIL 815 PM CDT FOR SOUTHEASTERN
CLAY AND NORTHWESTERN DIXON COUNTIES...
AT 600 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SIGNIFICANT
STREET FLOODING IN VERMILLION WITH SEVERAL INTERSECTIONS CLOSED ON
THE NORTHWEST...AND FAR EASTERN PORTIONS OF TOWN...UNDER UP TO TWO
FEET OF WATER. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
FLASH FLOOD PRODUCING RAINFALL HAD DIMINISHED CONSIDERABLY IN
INTENSITY SINCE 530 PM...BUT LIGHT RAINFALL WILL CONTINUE THROUGH 8
PM.
RUNOFF FROM THE EARLIER RAINFALL WILL CONTINUE TO CREATE PROBLEMS
WITH URBAN PONDING IN AND AROUND MASKELL AND VERMILLION THROUGH 815
PM...AND SMALL RURAL CREEKS AND STREAMS ARE LIKELY TO BE OUT OF
THEIR BANKS...INCLUDING LIME CREEK...EAST CREEK...AND AMES CREEK IN
NORTHWEST DIXON COUNTY.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
LAT...LON 4260 9701 4271 9682 4295 9681 4290 9694
4276 9700
$$
CHAPMAN000
WGUS73 KFSD 010126
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
825 PM CDT TUE MAY 31 2005
NEC051-SDC027-010134-
DIXON NE-CLAY SD-
825 PM CDT TUE MAY 31 2005
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN CLAY AND NORTHWESTERN
DIXON COUNTIES ALLOWED TO EXPIRE AT 815 PM CDT...
WITH RAINFALL TAPERING OFF...AND WATER RECEDING AROUND VERMILLION
FROM PRIOR HEAVY RAINFALL...THE FLASH FLOOD WARNING HAS BEEN
ALLOWED TO EXPIRE. RAINFALL TOTALS THROUGH 8 PM RECEIVED WERE 2.21
INCHES AT VERMILLION...AND ALMOST 4 INCHES A MILE NORTH OF MASKELL.
LAT...LON 4260 9701 4271 9682 4295 9681 4290 9694
4276 9700
$$
CHAPMANNearby
Flash Flood Warnings in Nebraska, 2005Flash Flood Warnings in South Dakota, 2005Every flash flood warning in 2005
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.