Flash Flood Warning 41, NWS Sioux Falls, SD

Issued

Jul 24, 2005, 11:12 PM CDT (04:12 UTC)

Expired

Jul 25, 2005, 1:15 AM CDT

In force

2 hr

Issued by

NWS Sioux Falls, SD

Area

Counties, with a storm outline in the text

Counties Lyon County, IA, Rock County, MN, Lincoln County, SD, Turner County, SD

The Sioux Falls radar (KFSD), 17 km from the middle of the area, began a volume at 04:14 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

000 
WGUS53 KFSD 250413
FFWFSD
IAC119-MNC133-SDC083-125-250615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1112 PM CDT SUN JUL 24 2005

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN LYON COUNTY IN NORTHWEST IOWA
  NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA
  SOUTHERN ROCK COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 115 AM CDT

* AT 1112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM
  BEAVER CREEK TO 4 MILES SOUTHWEST OF VIBORG...OR ALONG A LINE
  EXTENDING FROM 11 MILES WEST OF LUVERNE TO 17 MILES WEST OF
  BERESFORD...MOVING EAST AT 25 MPH.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA BEFORE 1 AM CDT.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4367 9644 4350 9646 4348 9692 4331 9716
      4310 9716 4339 9607 4367 9605

$$
RSR

000 
WGUS73 KFSD 250538
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1237 AM CDT MON JUL 25 2005

IAC119-MNC133-SDC083-125-250615-
LYON IA-ROCK MN-LINCOLN SD-TURNER SD-
1237 AM CDT MON JUL 25 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 115 AM CDT FOR TURNER AND 
NORTHERN LINCOLN COUNTIES IN SOUTH DAKOTA...SOUTHERN ROCK COUNTY 
MINNESOTA...AND NORTHERN LYON COUNTY IOWA...

AT 1235 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING.  THESE STORMS WERE 
CENTERED ALONG A LINE EXTENDING MENNO TO ROCK RAPIDS TO FULDA... 
MOVING EAST AT 25 MPH.

RADAR ESTIMATES RAINFALL TOTALS OF 1 TO 3 INCHES SINCE 10 PM...AND 
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE 
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS. CAMPERS AND HIKERS 
SHOULD AVOID STREAMS OR CREEKS.

LAT...LON 4367 9644 4350 9646 4348 9692 4331 9716
      4310 9716 4339 9607 4367 9605

$$

MG

Flash Flood Warnings in South Dakota, 2005Flash Flood Warnings in Iowa, 2005Flash Flood Warnings in Minnesota, 2005Every flash flood warning in 2005

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.