Flash Flood Watch continues through Monday; Rounds of showers/t-storms through Sunday night, very heavy rainfall rates, possible flooding and a few strong to severe storms

/Issued 4:41 PM CDT, Saturday, June 16, 2018/

Source:  http://www.wpc.ncep.noaa.gov

Note:  Flash Flood Watch remains in effect for much of the Northland (Green area on map) through Monday afternoon, except in western areas from Grand Rapids to Brainerd where the Flash Flood Watch runs through Sunday morning.

Weather Synopsis

The heaviest rain today was over portions of northern Minnesota, farther north from the areas that were hit hard on Friday.  Cook, Minnesota reported 4.50 inches of rain in just 1 hour and 30 minutes today which resulted in flooding in that area, incredible rainfall rates!

The atmosphere remains loaded with deep tropical moisture with PWATS through Sunday evening ranging from 1.60 to 2.25 inches (Record or near record territory for mid June) Dew points will remain in the 65 to 75 degree range, and instability will remain favorably strong to support convection at times through Sunday night.

A nearly stationary frontal boundary will remain over the upper Midwest tonight and Sunday before it finally shifts farther south/east and further away from the Northland by Monday morning which will end the threat for heavy rainfall.

A few of the thunderstorms could be strong to severe tonight and again Sunday afternoon/evening with hail and damaging wind gusts the primary threats in our area.  The greatest potential for a few severe storms is over southern portions of the Northland tonight, from Brainerd and Grand Rapids to Duluth and Hinckley, east into all of northwest Wisconsin.  Sunday’s risk shifts more into eastern Minnesota and includes all of northwest Wisconsin once again.

As we’ve seen since Friday, will continue to have some breaks in the rainfall at times through Sunday night.

Lows tonight will range from the upper 50s to lower 70s with cooler temps and possible fog at times near Lake Superior.  Highs Sunday will range from around 70 to the middle 80s, cooler near Lake Superior.

Normal Temperatures for June 17 at Duluth, Minnesota

High:  71
Low:  50

Sunrise Sunday:  5:14 AM CDT
Sunset Sunday:   9:06 PM CDT

Tim