Saturday, March 11, 2017

Cold tonight; Snow on the way for Sunday and Monday (Winter Weather Advisory 7 PM Sun - 7 PM Mon for Duluth and North Shore of Lake Superior)

/Issued 5:32 PM CST, Saturday, March 11, 2017/

Here's my snowfall accumulation map for the Sunday-Monday event.

























Tonight's low temperature forecast.  Source:  https://graphical.weather.gov




















Sunday's high temperature forecast.  Source:  https://graphical.weather.gov




















Link to Minnesota road conditions:  http://lb.511mn.org/mnlb/winterdriving/routeselect.jsf

Weather Synopsis for northeast Minnesota and northwest Wisconsin

A chilly day but there was quite a bit of sunshine which made it feel a touch warmer.  Highs today were in the teens to lower 20s.

High pressure moving into western Manitoba Province this afternoon will shift south/east through Monday while low pressure moves into eastern Wyoming Sunday morning, southern Iowa Monday morning and northern Kentucky Monday evening -- A trough will extend north of the surface low and that trough will be over the upper Midwest and will help to produce some snow from Sunday into Monday, the heaviest snow with this system will remain west and south of the Northland but lake effect snow could pile up to several inches around Lake Superior, more on that below.

Winds will shift to the east/northeast Sunday morning and are forecast to remain out of the E/NE through Monday.  Cold air will remain in place with 850mb temperatures at around -17 degrees Celsius while lake water temperatures are at around +2 degrees Celsius, this temperature contrast combined with minimal ice coverage over Lake Superior should aid in the development of lake effect and lake enhanced snowfall especially from late Sunday afternoon into Monday but scattered lake effect snow showers and flurries could develop as early as Sunday morning as low level winds veer to the NE.  Note:  There is potential for 3 to 6 inches of snow in the Twin Ports and along portions of the North Shore and South Shore of Lake Superior but locally higher amounts are possible if a more persistent snow band sets up and remains over the same location for a few hours.

Low temperatures tonight will be in the single digits below to single digits above zero but the typical cold spots in the Northland could drop into the teens below.  Highs Sunday will be in the teens and 20s.

Forecast for Duluth and Superior

Event:  *Winter Weather Advisory for Duluth*
Timing:  7 PM Sunday until 7 PM CDT Monday

.Tonight...  Mostly clear.  Cold.  Low 1 below to 4 above.  Wind north to northwest around 10 mph.

.Sunday...  Becoming mostly cloudy.  Scattered snow showers or flurries possible.  High 15 to 20.  Wind east at 10 to 20 mph.

.Sunday night and Monday...  Light snow with occasional heavier lake effect snow showers.  Total snow accumulations of 3 to 6 inches possible.

Normal temperatures for Sunday

High:  33
Low:   16

Sunrise Sunday:  7:27 AM CDT
Sunset Sunday:   7:11 PM CDT

Tim