Alert archive / Nebraska / Flash Flood Warnings in 2006
Flash Flood Warning 9, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 16, 2006, 7:37 PM CDT for Dakota County, Nebraska; Woodbury County, Iowa; Union County, South Dakota. It was in force for 4 hr. 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
- Jun 16, 2006, 7:37 PM CDT (00:37 UTC)
- Expired
- Jun 16, 2006, 11:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
Counties Woodbury County, IA, Dakota County, NE, Union County, SD
The radar
The Omaha radar (KOAX), 123 km from the middle of the area, began a volume at 00:37 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 16, 7:55 PM CDT | HEAVY RAIN 3.65 | Sioux City, IA | 3.65 INCHES OF RAINFALL SO FAR AT THE NORTH END OF SIOUX CITY. LOTS OF WATER IN LOW LYING AREAS AND STANDING WATER IN THE DITCHES. ALL THE CREEKS, INCLUDING PERRY CREEK, ARE RUNNING HIGH AND FAST. |
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, 0.6 hours before the alert went out and 123 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
- 371 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 2359 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KFSD 170038
FFWFSD
IAC193-NEC043-SDC127-170415-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
737 PM CDT FRI JUN 16 2006
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
EASTERN DAKOTA COUNTY IN NORTHEAST NEBRASKA
WESTERN WOODBURY COUNTY IN NORTHWEST IOWA
SOUTHERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA
* UNTIL 1115 PM CDT
* AT 730 PM CDT...ADDITIONAL THUNDERSTORMS OVER EASTERN NEBRASKA
WERE MOVING NORTHEAST AT 35 MPH TOWARD THE SIOUX CITY METRO
AREA. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE
POSSIBLE IN THE WARNED AREA. POOR DRAINAGE URBAN AREAS WILL
AGAIN LIKELY EXPERIENCE FLASH FLOODING.
LAT...LON 4229 9654 4227 9628 4256 9619 4255 9646
4259 9662
$$
CHAPMAN1 follow-up statement
000
WGUS73 KFSD 170312
FFSFSD
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1011 PM CDT FRI JUN 16 2006
IAC193-NEC043-SDC127-170321-
WOODBURY IA-DAKOTA NE-UNION SD-
1011 PM CDT FRI JUN 16 2006
...THE FLASH FLOOD WARNING FOR SOUTHERN UNION...EASTERN DAKOTA AND
WESTERN WOODBURY COUNTIES IS CANCELLED...
THE THREAT FOR RAINFALL HAS TAPERED OFF IN AND AROUND THE SIOUX CITY
METRO AREA LATE EVENING. HOWEVER...MORE RAINFALL WILL SPREAD BACK IN
FROM THE SOUTH AND WEST AFTER MIDNIGHT...SOME OF WHICH COULD BE
HEAVY AT TIMES. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM
CDT.
LAT...LON 4229 9654 4227 9628 4256 9619 4255 9646
4259 9662
$$
CHAPMANNearby
Flash Flood Warnings in Nebraska, 2006Flash Flood Warnings in Iowa, 2006Flash Flood Warnings in South Dakota, 2006Every flash flood warning in 2006
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.