Wednesday, June 28, 2017

Nearly an inch of rain so far today in Duluth. Tornado Watch until 10 PM for parts of northwest Wisconsin. Little bit nicer Thursday

/Issued 5:05 PM CDT, Wednesday, June 28, 2017/

Radar rainfall estimates through late Wednesday afternoon, and rainfall reports from

Analysis from earlier this afternoon

Weather Synopsis

A cool and wet Wednesday as a rather strong area of low pressure moved east out of the eastern Dakotas today.  The surface low at 4 PM today was moving into central Minnesota.  Rain has been falling most of the day in northeast Minnesota and northwest Wisconsin with embedded heavier downpours.  The overcast and rainy conditions in our area has kept the instability in check except for the far southern portions of the Northland where CAPE values have risen to 500-1000 j/kg late this afternoon, result from this has been for very little thunderstorm activity in our area today, but a few storms have been developing late this afternoon in Burnett County Wisconsin where the northern edge of the higher instability is located.  Highs today were mainly in the 50s and 60s with a few locales in the far south getting close to 70 degrees.

An unsettled weather pattern will be with us for the next few days.  The system giving us the rain today will exit slowly to the east tonight while additional areas of low pressure and their troughs/cold fronts pass through the area through Saturday.

Occasional rain will continue in parts of the Northland tonight with thunderstorms also expected especially this evening over the far southern portions of northwest Wisconsin.  A few of these storms could become strong to severe with favorable 0-1 km shear in place ~30 knots along with Storm Relative Helicity Values of 200-300 m2/s2  -- An isolated tornado threat does exist this evening from Burnett County, east to Price County Wisconsin, and there could also be some hail and gusty winds.

Lows tonight will mainly be in the 50s.

Some improvements in the weather on the way for Thursday under partly sunny to mostly cloudy skies.  Highs are forecast to be in the 60s and 70s with a wind shift to the north or northwest.  There could be a few showers over parts of the area with an isolated afternoon thunderstorm possible too.

Will see an upper level low/trough approach from the NW on Friday and that system will likely be with us through the weekend -- Colder temperatures aloft (Although not as cold as last weekend) will move over the upper Midwest, and this combined with surface heating will likely cause scattered showers and isolated thunderstorms Friday and Saturday with a lower chance for this to occur on Sunday.

Highs Friday, Saturday and Sunday are expected to be in the 60s and 70s.

Forecast for Duluth and Superior

.Tonight...  Occasional showers.  Patchy fog.  Mostly cloudy.  Low 48 to 53.  Wind east at 10 to 20 mph becoming variable late.

.Thursday...  Considerable cloudiness, some sun possible at times.  High 67 to 72 but it could be cooler at times near Lake Superior.  Wind north to northwest at 10 to 15 mph.

.Friday...  A few showers possible.  Mostly cloudy (Some peeks of sun)  Highs in the 60s.

Normal temperatures for Thursday

High:  74
Low:   53

Sunrise Thursday:  5:17 AM CDT
Sunset Thursday:   9:06 PM CDT