Lyon 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



915 am CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a

* Flood Warning for
the Ocheyedan river near Everly.
* Until further notice.
* At 08am Thursday the stage was 1364.01 feet.
* Flood stage is 1364.00 feet.
* At stages near 1364 feet... ditches fill, the lowest banks overflow,
and minor flooding of agricultural land begins.


Lat... Lon 4324 9542 4324 9537 4318 9534 4317 9527
          4313 9529 4316 9539





915 am CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a

* Flood Warning for
the Rock River at Luverne.
* From this evening to Saturday morning.
* At 07am Thursday the stage was 4.61 feet.
* Minor flooding is forecast.
* Flood stage is 10.00 feet.
* Forecast... the river will crest near 10.2 feet by 1 am Friday.
* At stages near 10.0 feet... significant agricultural flooding
begins.


Lat... Lon 4371 9622 4370 9611 4360 9616 4350 9614
          4350 9625 4363 9625




649 am CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a

* Flood Warning for
the Rock River at Rock Valley.
* From this evening to Sunday morning.
* At 06am Thursday the stage was 12.66 feet.
* Moderate flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast... rise above flood stage by 7 PM Thursday and crest near
17.3 feet by Friday September 21. The river will fall below flood
stage by Saturday September 22.
* At stages near 16.0 feet... significant amounts of agricultural
lands are flooded, and some rural roads are also threatened by high
water.


Lat... Lon 4334 9625 4331 9618 4312 9636 4303 9647
          4314 9644 4325 9639




649 am CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a

* Flood Warning for
the Rock River at Rock Rapids.
* From this afternoon to Sunday morning.
* At 05am Thursday the stage was 11.62 feet.
* Moderate flooding is forecast.
* Flood stage is 13.00 feet.
* Forecast... rise above flood stage by 12 PM Thursday and crest near
17.3 feet by Friday September 21. The river will fall below flood
stage by Saturday September 22.
* At stages near 16.0 feet... the higher banks on the left side of the
river, and the lower banks on the right side, will begin flooding.


Lat... Lon 4350 9625 4350 9614 4338 9611 4331 9618
          4334 9625 4341 9619




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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