StormTeam 3: Flash Flood Watch in effect; Heavy rain possible in much of viewing area

We're tracking Thursday's flood threats and severe weather risks.

Posted: Sep 12, 2019 7:02 AM
Updated: Sep 12, 2019 12:49 PM

A Flash Flood Watch has been issued for the majority of the viewing area until 1 a.m. Friday as periods of heavy rain is expected to last throughout Thursday. Some could see around 3+" of new rain over the next 36 hours.

One last round of strong to severe storms will race in Thursday afternoon into the night alongside the excessive rainfall threat. By Friday, a dramatic shift in the weather pattern heads our way. Fall makes a brief comeback as temperatures look to top off in the upper 60s alongside strong winds from the west.

This will be due to a passing cold front that will also be responsible for pushing away leftover rain and storms from the workweek. Our next chance for showers and storms heads in Saturday night/Sunday morning, but the weekend also brings a very impressive rebound as temps climb back into the 80s under mostly sunny skies for the rest of Sunday.

The next work week looks to stay above average with temperatures maxing out in the low to mid-80s.

Flash Flood Watch
Areas Affected: Allamakee; Chickasaw; Clayton; Fayette; Floyd; Howard; Mitchell; Winneshiek

NWS LaCrosse (Southwestern Wisconsin, Southeastern Minnesota, and Northeast Iowa)
...Threat for Additional Flash Flooding Continues... .Thunderstorms overnight produced areas of heavy rain, especially across parts of northeast Iowa and southwest Wisconsin. Those areas experienced flash flooding with 3 to 5 inches of rain. Most other areas saw closer to 1-2 inches. More thunderstorms are moving across the area this morning, now just east of Interstate 35 in Minnesota and Iowa. These will bring more rounds of heavy rain before Noon. In addition, more storms are possible through the afternoon into the evening, all with a heavy rain potential. Recent heavy rains has saturated the ground in areas that were relatively dry just last week. Flash flooding could quickly develop so use caution. In hilly terrain, be on alert for water over roads or mudslides. ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for

* Portions of Iowa, southeast Minnesota, and Wisconsin, including the following areas, in Iowa, Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell, and Winneshiek. In southeast Minnesota, Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha, and Winona. In Wisconsin, Buffalo, Crawford, Grant, La Crosse, Richland, Trempealeau, and Vernon.

* Through late tonight

* Heavy rainfall from thunderstorms with the potential for rainfall rates of 1 to 3 inches per hour. An additional 2 to 4 inches of rain is possible.

* Be prepared for rapidly rising water levels and possible flooding if you are near a river, stream, or low lying area. Be ready to move to higher ground if heavy rain develops.

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. Never drive into flood waters.

Flash Flood Watch
Areas Affected: Anoka; Carver; Dakota; Freeborn; Goodhue; Hennepin; Le Sueur; Ramsey; Rice; Scott; Steele; Waseca; Washington

NWS Minneapolis (Southern Minnesota)
...HEAVY RAINFALL EXPECTED INTO THIS EVENING... .A Flash Flood Watch remains in effect through Thursday afternoon for much of central and southern Minnesota, and until 10 PM over a portion of west central Wisconsin. This watch includes those counties located east of a line from Monticello to Fairmont, and south of a line from Monticello to Forest Lake in Minnesota, to New Richmond and Cornell in Wisconsin. Thunderstorms capable of heavy rainfall and flash flooding are expected to redevelop over southern Minnesota and move east into western Wisconsin by evening. A line of thunderstorms is expected to develop over central and southern Minnesota this afternoon. This will produce heavy rainfall which will exacerbate any flooding issues from the heavy rain that fell last night. Additional rainfall amounts of 1 to 3 inches are expected by this evening across the watch area. Recent heavy rainfall has led to very moist soil conditions and elevated streams and creeks across much of central and southern Minnesota. The combination of high rainfall rates and wet soil conditions could lead to rapid runoff and areas of flash flooding. ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... The Flash Flood Watch continues for

* Portions of east central Minnesota, south central Minnesota, and southeast Minnesota, including the following areas, in east central Minnesota, Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington. In south central Minnesota, Freeborn, Le Sueur, Rice, Steele, and Waseca. In southeast Minnesota, Goodhue.

* Until 7 PM CDT this evening

* Thunderstorms with heavy rainfall. 1 to 3 inches of rain expected, with localized higher amounts possible.

* Never drive through flood waters.

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
Areas Affected: Black Hawk; Bremer; Butler; Cerro Gordo; Franklin; Grundy; Hancock; Winnebago; Worth

NWS DesMoines (Central Iowa)
...Flash Flooding Possible in Northeast Iowa Later Today... Showers and thunderstorms will redevelop over northern and northeastern Iowa this afternoon and evening, with the potential for locally heavy rainfall in an area generally east of Interstate 35 and north of Highway 20. Localized flash flooding is possible. ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... The Flash Flood Watch continues for

* Portions of central Iowa, north central Iowa, and northeast Iowa, including the following areas, in central Iowa, Grundy. In north central Iowa, Butler, Cerro Gordo, Franklin, Hancock, Winnebago, and Worth. In northeast Iowa, Black Hawk and Bremer.

* Until 7 PM CDT this evening

* Rainfall rates of around 2 inches per hour with rainfall totals of 2 to 3 inches are possible.

* Flash flooding is most likely in urban and poor drainage areas. Flash flooding is also possible near small streams and due to overland flooding, especially where recent heavy rainfall occurred Wednesday night.

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
Areas Affected: Dodge; Fillmore; Houston; Mower; Olmsted; Wabasha; Winona

NWS LaCrosse (Southwestern Wisconsin, Southeastern Minnesota, and Northeast Iowa)
...Threat for Additional Flash Flooding Continues... .Thunderstorms overnight produced areas of heavy rain, especially across parts of northeast Iowa and southwest Wisconsin. Those areas experienced flash flooding with 3 to 5 inches of rain. Most other areas saw closer to 1-2 inches. More thunderstorms are moving across the area this morning, now just east of Interstate 35 in Minnesota and Iowa. These will bring more rounds of heavy rain before Noon. In addition, more storms are possible through the afternoon into the evening, all with a heavy rain potential. Recent heavy rains has saturated the ground in areas that were relatively dry just last week. Flash flooding could quickly develop so use caution. In hilly terrain, be on alert for water over roads or mudslides. ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for

* Portions of Iowa, southeast Minnesota, and Wisconsin, including the following areas, in Iowa, Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell, and Winneshiek. In southeast Minnesota, Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha, and Winona. In Wisconsin, Buffalo, Crawford, Grant, La Crosse, Richland, Trempealeau, and Vernon.

* Through late tonight

* Heavy rainfall from thunderstorms with the potential for rainfall rates of 1 to 3 inches per hour. An additional 2 to 4 inches of rain is possible.

* Be prepared for rapidly rising water levels and possible flooding if you are near a river, stream, or low lying area. Be ready to move to higher ground if heavy rain develops.

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. Never drive into flood waters.

 

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Warmer weather is set to return this week
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