/Issued 4:25 PM CDT, Monday, September 16, 2013/
*From frost/freeze to a mini late summer heat wave? 18z high res WRF model cranks out widespread 80s and even some 90s over much of Minnesota on Wednesday, but it will be cooler near Lake Superior.
Low temperature report for September 16, 2013
Source: National Weather Service Duluth, Minnesota
Duluth, MN: 37F
International Falls, MN: 29F
Hibbing, MN: 28F
Ashland, WI: 33F
Hayward, WI: 30F
Sky Harbor, MN: 39F
Two Harbors, MN: 30F
Silver Bay, MN: 28F
Grand Marais, MN (Airport) 28F
Ely, MN: 28F
Orr, MN: 27F
Cook, MN: 28F
Crane Lake, MN: 27F
Eveleth, MN: 28F
Bigfork, MN: 27F
Grand Rapids, MN: 32F
Moose Lake, MN: 32F
Hinckley, MN: 32F
McGregor, MN: 32F
Superior, WI: 32F
Siren, WI: 31F
Phillips, WI: 31F
Cass Lake, MN: 33F
Northome, MN: 32F
Togo, MN: 25F
Brimson, MN: 23F
Duluth, MN (NWS) 34F
Embarrass, MN: 26F
4 E of Island Lake, MN: 32F
3 E of Orr, MN: 28F
2 S of Tower, MN: 28F
Butternut, WI: 31F
Gurney, WI: 32F
Upson, WI: 30F
4 W of Clam Lake, WI: 33F
2 S of Brimson, MN: 23F
2 NNW of Cotton, MN: 27F
-Today’s low temperature (September 16) of 37 degrees at the Duluth Airport is the coldest minimum temperature this month so far and is also the coldest low temperature since June 3 (also 37 degrees)
-1st half of September climate data for Duluth, MN (Airport location) Average temperature 61.6 degrees which is 3.0 degrees warmer than average. 0.58″ of precipitation which is 1.52″ below average. 8 days at or above 70F; 2 days at or above 80F; 1 day with a high temperature below 60F; 2 days with a low temperature below 40F.
Source: National weather Service Duluth, Minnesota
Parts of Northeast Minnesota including the North Shore, Iron Range, and Arrowhead and portions of Northwest Wisconsin.
1 AM to 8 AM CDT Tuesday.
Counties included in the frost advisory:
Central and Northern St. Louis MN
Some cities included in the frost advisory:
Grand Marais…Lutsen…Isabella…Finland…Silver Bay…Two Harbors…Ely…Crane Lake…Orr…Hibbing…Cotton…Bayfield…Cable…Ashland…High Bridge…Mellen…Hurley…Upson…Gile…Hayward…Winter…Exeland…Park Falls…Phillips…and Ogema.
Low temperatures bottoming out in the low to mid 30s with some 20s also possible. Sensitive vegetation could be damaged or killed if left uncovered or unprotected.
A frost advisory means that frost is possible.
*Areas in blue are in a frost advisory for Tonight. (Source, NWS hazards map)
Note: I forgot to include Saturday Night/Sunday Morning’s rainfall totals in yesterday’s post, so here they are.
September 14-15, 2013 rainfall totals
Source: National Weather Service Duluth, MN
Duluth, MN: 0.16″
International Falls, MN: 0.24″
Brainerd, MN: 1.02″
Grand Marais, MN: 0.25″
Hayward, WI: 0.35″
7 NW of Brainerd, MN: 1.13″
12 N of Isle, MN: 1.02″
3 NE of Nisswa, MN: 1.05″
Northome, MN: 0.26″
Togo, MN: 0.47″
Cook, MN: 0.30″
Duluth, MN (NWS) 0.17″
Gunflint Lake, MN: 0.63″
Kabetogama, MN: 0.62″
3 E of Orr, MN: 0.54″
Silver Bay, MN: 0.13″
2 S of Tower, MN: 0.17″
Butternut, WI: 0.33″
Upson, WI: 0.20″
4 W of Clam Lake, WI: 0.19″
Sarona, WI: 0.70″
*Rainfall map from this past weekend’s system. (Source, Midwest Regional Climate Center)
Today’s Weather Summary for Northeast Minnesota and Northwest Wisconsin
Strong high pressure averaging 1032mb was over the Central Great Lakes late This Afternoon. A frosty and in some places a foggy Morning gave way to plentiful amounts of Afternoon sunshine. High temperatures were generally in the lower to middle 60s with south or east winds at 5 to 15 mph.
Forecast Discussion for Northeast Minnesota and Northwest Wisconsin
Short Term Forecast – Confidence: High.
Tonight (September 16)
Mostly clear skies and cool temperatures are expected once again with lows in the 30s and 40s with a few 20s possible as well. South or east winds will continue at under 15 mph.
Tuesday and Tuesday Night (September 17)
Dry weather this period under partly to mostly cloudy skies. Highs will be in the 60s and 70s with lows in the 40s and 50s. Southerly winds are expected at 10 to around 20 mph.
Extended Forecast – Confidence: High.
Wednesday through Friday (September 18-20)
A strong area of low pressure is forecast to move from the Northern Plains to Western-Northern Ontario between Wednesday and Friday. The Northland will have milder temperatures ahead of this system on Wednesday and Thursday with cooler air moving back in for Friday in wake of this storm.
High temperatures on Wednesday will be in the 70s with a few 80s even possible but it will be cooler near Lake Superior. Lows Wednesday Night will be in the 50s and 60s. Highs on Thursday will mainly be in the 70s with lows in the 40s and 50s. Highs on Friday will be in the 50s and 60s.
The majority of Wednesday looks dry at this time, might see a few showers or thunderstorms move into Western parts of the Northland Wednesday Night. Should be a greater risk for some showers or thunderstorms in the area on Thursday. A few showers can’t be ruled out Friday as well, but Thursday appears to be the day that holds the greatest potential for some showers the way it looks now.
Long Range Forecast – Confidence: High.
Near to possibly above average temperatures are expected during this period. The possibility also exists for a low pressure system or 2 to eject out of the Western U.S., if that happens, then there could be some rain over parts of the Upper Midwest. The 1st event looks to be around the 23rd, the other sometime between the 25th-26th.
5 DAY FORECAST FOR DULUTH/SUPERIOR
.Tonight… Mostly clear. Patchy frost possible. Low 35 to 40. Wind south to southeast around 10 mph.
.Tuesday… Mostly sunny. High 62 to 67. Wind south at 10 to 20 mph.
.Tuesday Night… Partly cloudy. Low 50 to 55. Wind south at 5 to 15 mph.
.Wednesday… Partly to mostly cloudy. High 68 to 73.
.Wednesday Night… Partly to mostly cloudy. Low 55 to 60.
.Thursday… Scattered showers. Isolated thunderstorms also possible. High 65 to 70.
.Thursday Night… Mostly cloudy. Low 45 to 50.
.Friday… Partly sunny. High 55 to 60.
Normal temperatures for Today
Sunrise Tuesday: 6:49 AM CDT
Sunset Tuesday: 7:16 PM CDT