O'Brien Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flash Flood Warning
Issued: 9:30 AM CDT Sep. 20, 2018 – National Weather Service

The National Weather Service in Sioux Falls has issued a

* Flash Flood Warning for...
southern Lyon County in northwestern Iowa...
southern Osceola County in northwestern Iowa...
Sioux County in northwestern Iowa...
southwestern Clay County in northwestern Iowa...
O'Brien County in northwestern Iowa...
northern Clay County in southeastern South Dakota...
Lincoln County in southeastern South Dakota...
northern Union County in southeastern South Dakota...

* until 1230 PM CDT.

* At 929 am CDT, numerous rural roads are reported to remain under
water at mid morning. Additional heavy rain will continue across
the warned area through the next 1 to 2 hours. Flash flooding will
remain a significant concern.

* Some locations that will experience flooding include...
Sioux Center, Orange City, Sheldon, Canton, Hawarden, Beresford,
Rock Valley, Hull, Lennox, Hartley, Sanborn, Alton, Paullina,
Primghar, Worthing, Inwood, Alcester, Boyden, Hospers and
Sutherland.

Precautionary/preparedness actions...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

Please report flooding to your local law enforcement agency when you
can do so safely.


Lat... Lon 4291 9536 4291 9716 4304 9716 4299 9706
      4300 9693 4331 9681 4334 9693 4344 9692
      4326 9586 4326 9540 4312 9527


Chapman



922 am CDT Thu Sep 20 2018

... Forecast flooding increased from minor to moderate severity...
the Flood Warning continues for
the Floyd river at Sheldon.
* Until late Friday night.
* At 08am Thursday the stage was 12.86 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast... the river will crest 14.5 feet by 1 PM Thursday.
* At stages near 14.0 feet... flooding affects large areas of farm
land within 1000 feet of the river.


Lat... Lon 4325 9584 4326 9568 4324 9565 4322 9580
          4307 9589 4307 9596


Location flood latest observed maximum forecast
         stage stage time stage time



706 am CDT Thu Sep 20 2018

... Observed flooding increased from minor to moderate severity...
the Flood Warning continues for
the Waterman creek near Sutherland.
* Until further notice.
* At 06am Thursday the stage was 1239.32 feet.
* Flood stage is 1235.00 feet.
* At stages near 1239 feet... significant flooding of crop land
begins.


Lat... Lon 4301 9544 4301 9540 4299 9540 4298 9542
          4294 9541 4294 9543 4299 9545


Location flood latest observed maximum forecast recent observed
         stage stage time stage time crest time

Floyd river
mrli4 12.0 e4.40 Thu 1 am 14.4 Fri 7 am

Little Sioux river


649 am CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a

* Flood Warning for
the little Floyd river near Sanborn.
* Until further notice.
* At 05am Thursday the stage was 89.30 feet.
* Flood stage is 87.00 feet.


Lat... Lon 4317 9587 4316 9581 4321 9570 4320 9567
          4315 9575 4315 9578 4314 9582 4315 9587




Flash Flood Watch
Issued: 6:31 AM CDT Sep. 20, 2018 – National Weather Service

... Flash Flood Watch remains in effect until 1 PM CDT this
afternoon...

The Flash Flood Watch continues for

* portions of northwest Iowa, southwest Minnesota, and South
Dakota, including the following areas, in northwest Iowa,
Buena Vista, Cherokee, Clay IA, Dickinson, Lyon IA, O'Brien,
Osceola, Plymouth, and Sioux. In southwest Minnesota,
Cottonwood, Jackson, Lincoln MN, Lyon MN, Murray, Nobles,
Pipestone, and rock. In South Dakota, Bon Homme, Brookings,
Charles Mix, Clay SD, Davison, Douglas, Hanson, Hutchinson,
Lake, Lincoln SD, McCook, Miner, Minnehaha, Moody, Turner,
Union, and Yankton.

* Until 1 PM CDT this afternoon

* showers and a few thunderstorms will continue this morning. The
general rainfall will be trending downward. However there will
still be isolated to scattered pockets of heavy rain under the
heavier cells which will produce thunderstorms. Therefore
isolated areas could receive a quick one inch of rain in a brief
amount of time, on top of already saturated ground.

* Reports of County and township roads, and even some state
highways underwater are coming in for locations south of
Interstate 90. Heavy rains can lead to flash flooding, with
water covered roads and urban flooding possible.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.





Flash Flood Watch
Issued: 6:31 AM CDT Sep. 20, 2018 – National Weather Service

... Flash Flood Watch remains in effect until 1 PM CDT this
afternoon...

The Flash Flood Watch continues for

* portions of northwest Iowa, southwest Minnesota, and South
Dakota, including the following areas, in northwest Iowa,
Buena Vista, Cherokee, Clay IA, Dickinson, Lyon IA, O'Brien,
Osceola, Plymouth, and Sioux. In southwest Minnesota,
Cottonwood, Jackson, Lincoln MN, Lyon MN, Murray, Nobles,
Pipestone, and rock. In South Dakota, Bon Homme, Brookings,
Charles Mix, Clay SD, Davison, Douglas, Hanson, Hutchinson,
Lake, Lincoln SD, McCook, Miner, Minnehaha, Moody, Turner,
Union, and Yankton.

* Until 1 PM CDT this afternoon

* showers and a few thunderstorms will continue this morning. The
general rainfall will be trending downward. However there will
still be isolated to scattered pockets of heavy rain under the
heavier cells which will produce thunderstorms. Therefore
isolated areas could receive a quick one inch of rain in a brief
amount of time, on top of already saturated ground.

* Reports of County and township roads, and even some state
highways underwater are coming in for locations south of
Interstate 90. Heavy rains can lead to flash flooding, with
water covered roads and urban flooding possible.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.





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