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Sioux County Sheriff's Office
Wednesday September 19th, 2018 :: 01:58 p.m. CDT

Advisory

Flash Flood Watch until 01:00PM Thursday

Thunderstorms will continue to develop Wednesday evening and continue through Thursday morning. This thunderstorm activity will have the potential to produce high rainfall rates, and rapid accumulation of rainfall in a short period of time. Total rainfall accumulations of 1 to 3 inches will be possible by Thursday morning with localized rainfall amounts above 3 inches possible. This rainfall on top of saturated grounds will lead to a heightened risk of flash flooding as well as river flooding. The Flash Flood Watch is now in effect for

* Portions of northwest Iowa, southwest Minnesota, and South Dakota, including the following areas, in northwest Iowa, Clay IA, Dickinson, Lyon IA, O'Brien, Osceola, and Sioux. In southwest Minnesota, Cottonwood, Jackson, Lincoln MN, Lyon MN, Murray, Nobles, Pipestone, and Rock. In South Dakota, Aurora, Brookings, Brule, Davison, Douglas, Hanson, Hutchinson, Jerauld, Kingsbury, Lake, Lincoln SD, McCook, Miner, Minnehaha, Moody, Sanborn, and Turner.

* From 7 PM CDT this evening through Thursday afternoon

* Thunderstorms will continue to develop Wednesday evening and continue into Thursday morning. This thunderstorm activity will have the potential to produce extreme rainfall rates. Widespread rainfall accumulations between 1 and 3 inches will be possible. Localized rainfall accumulations greater than 3 to even 5 inches will also be possible.

* Heavy rains can lead to flash flooding, with water covered roads and urban flooding possible. Flooding an area streams and rivers will also be possible into Thursday.

* AFFECTED AREAS: LINCOLN ... HANSON ... JACKSON ... KINGSBURY ... BRULE ... LYON ... DAVISON ... O'BRIEN ... PIPESTONE ... COTTONWOOD ... SANBORN ... DICKINSON ... NOBLES ... TURNER ... DOUGLAS ... MCCOOK ... LAKE ... LYON ... MOODY ... JERAULD ... CLAY ... AURORA ... MINER ... ROCK ... OSCEOLA ... LINCOLN ... HUTCHINSON ... SIOUX ... BROOKINGS ... MINNEHAHA ... MURRAY

Instructions:

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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Address/Location
Sioux County Sheriff's Office
4363 Ironwood Ave., Ste 1
Orange City, IA 51250

Contact
Emergency: 9-1-1
Non-emergencies: 712-737-3307

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Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Future - Responsive action SHOULD be taken in the near future
Certainty:
Possible (p <= ~50%)
Category:
Meteorological (inc. flood)
Event:
Flash Flood Watch

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