Sunday, March 19, 2017

Widespread record heat in the central Plains today! Northland weather for Monday, dry with highs in the 40s to around 50 degrees; Colder temps return Tue-Wed

/Issued 4:33 PM CDT, Sunday, March 19, 2017/

These temperatures over the central Plains this afternoon sure do look nice! Source, 19z HRRR model;

All the colored dots on the map below represent stations that have tied, broken, or are near their daily record high temperature as of late Sunday afternoon, March 19, 2017.  Source:

Temperature departure map for the week of March 12, 2017.  Source:

Note:  Last week was definitely one of the colder weeks in quite some time across all of the upper Midwest and Great Lakes.

Precipitation departure map for the week of March 12, 2017.  Source:

Tonight's low temperature forecast.  Source:

Monday's high temperature forecast.  Source:

Temperature and precipitation report for Duluth, Minnesota (Airport location)

March 12-18, 2017

High temperatures:

3/12:  18 F/-15 degrees below normal
3/13:  21 F/-12 degrees below normal
3/14:  29 F/-4 degrees below normal
3/15:  36 F/+2 degrees above normal
3/16:  39 F/+5 degrees above normal
3/17:  37 F/+2 degrees above normal
3/18:  34 F/-1 degree below normal

Low temperatures:

3/12:  5 F/-11 degrees below normal
3/13:  2 F/-14 degrees below normal
3/14:  -3 F/-20 degrees below normal
3/15:  3 F/-14 degrees below normal
3/16:  16 F/-2 degrees below normal
3/17:  29 F/+11 degrees above normal
3/18:  23 F/+5 degrees above normal

Total precipitation:  0.52"
Normal:  0.32"
Departure:  +0.20" above normal

Weather Synopsis for northeast Minnesota and northwest Wisconsin

Very warm temperatures covered a large portion of the central U.S. today with 80s and even some 90s stretching from Nebraska to Texas -- 70s as far north as southern South Dakota this afternoon.  Of course it was cooler farther north here in the Northland but still above average for this time of year as highs topped out in the mid 40s to low 50s with 30s near Lake Superior because of an onshore wind.  There has been quite a bit of cloud cover across the area this afternoon but some breaks in the clouds have allowed for filtered sunshine from time to time.  Elevated instability has been on the increase this afternoon with mesoanalysis showing around 100-500 j/kg of most unstable cape along with very steep mid level lapse rates of 7.0-8.5 c/km covering portions of the Northland -- This has caused a few showers and thunderstorms to develop this afternoon over western Lake Superior with a few spotty showers also affecting extreme northeast Minnesota.

A weakening cold front will pass through the area this evening followed by high pressure for Monday which will then be followed by a stronger cold frontal passage for Monday night.  A few spotty showers are possible this evening otherwise it looks mainly dry through Monday night.

Lows tonight will be in the 20s and 30s with highs Monday in the 40s with a few lower 50s possible in far southern areas.  Lows Monday night will range from the teens in far northern Minnesota to around 30 degrees in northwest Wisconsin.

Cooler temperatures return for Tuesday and Wednesday along with a chance for lake effect snow showers.  Northerly winds and cold air moving over Lake Superior could cause some lake effect snow showers Tuesday along the South Shore -- winds will swing around to the east on Wednesday which could bring some lake effect snow showers to the North Shore of Lake Superior.  Daytime highs Tuesday and Wednesday will be in the 20s to lower 30s. Note:  Average highs as we move into late March are in the mid to upper 30s.

Note:  Late this week could feature some light rain or snow in northeast Minnesota and northwest Wisconsin but with strong high pressure setting up to our north the potential for a stronger storm moving far enough to the north to affect us has lessened compared to what it looked like a few days ago.

Forecast for Duluth and Superior

.Tonight...  Partly to mostly cloudy.  Low 30 to 33.  Wind east to southeast at 10 to 20 mph becoming west late.

.Monday...  Breezy.  Partly cloudy.  High 45 to 50.  Wind northwest at 10 to 20 mph with higher gusts possible mainly before Noon.

Normal temperatures for Monday

High:  36
Low:   19

Sunrise Monday:  7:11 AM CDT
Sunset Monday:   7:22 PM CDT