Saturday, July 30, 2016

July 30, 2016: Mild temperatures; Isolated showers and possibly a t-storm tonight and Sunday

/Issued 6:42 PM CDT, Saturday, July 30, 2016/

Forecast for Duluth and Superior

Normal temperatures for Sunday

High:  77
Low:  56

Sunrise Sunday:  5:48 AM CDT
Sunset Sunday:  8:41 PM CDT

Tonight's low temperature forecast.  Source, National Weather Service Duluth, Minnesota.

Sunday's high temperature forecast.  Source, National Weather Service Duluth, Minnesota.

Weather Summary for NE Minnesota and NW Wisconsin
Date:  July 30, 2016

A mix of sun and clouds over the Northland today with a few pop up showers and isolated thunderstorms occurring in two areas -- The first was in far northern Minnesota with the second area concentrating on east central Minnesota/far northwest Wisconsin (Some of that activity may have developed near lake breeze boundaries today)  No real organization to these storms as winds aloft were very weak, but there was enough instability and moisture to get these spotty storms going today with brief heavy downpours being the main hazard.  High temperatures today were in the 70s to around 80 degrees with late afternoon dew points generally in the 50s to lower 60s.  Winds were mainly out of the south or east at 5 to 15 mph.

Forecast Discussion for NE Minnesota and NW Wisconsin

Confidence:  High.

Tonight (July 30)

Partly to mostly cloudy skies with lows in the 50s to lower 60s, maybe a few 40s in the typical cold spots.  Winds will remain out of the south or east at 5 to 15 mph.  Note:  The computer models are showing the development of spotty showers and possibly a thunderstorm through the night with most of this activity occurring in eastern Minnesota and far northwest Wisconsin--There's no real boundary to focus on tonight, and usually in the type of pattern were currently in, most of the spotty showers will occur with the heating of the day (afternoon-early evening hours) Will see what happens tonight.

Sunday (July 31)

Confidence:  Medium to High.

The month of July will end on a mild note as high temperatures reach the 70s and lower 80s with lows Sunday night in the 50s and 60s.  High pressure will remain over the central/eastern Great Lakes to close out the weekend.  Moisture, some instability plus daytime heating will probably lead to a few spotty showers and isolated thunderstorms once again over parts of the Northland Sunday (Similar to what happened today, Saturday)  Any convection that manages to develop should be isolated and brief with no real organization to these storms as winds aloft remain weak but there will be enough instability and moisture once again to possibly help trigger a few storms with brief heavy downpours possible.

Extended Forecast

Confidence:  Medium.

A cold front is forecast to move southeast into the Northland Monday night and Tuesday -- Scattered showers and thunderstorms are possible as this front approaches.  High temperatures are forecast to be in the 80s on Monday and Tuesday with 60s and 70s along the North Shore of Lake Superior.