Issued at 5:14 PM CST, Friday, November 27th, 2009
Weather History:
On this date in 1998… A record high temperature of 60 degrees occurred at Duluth, Minnesota.
On this date in 1985… A record low temperature of -12 degrees occurred at Duluth, Minnesota.
On this date in 1994… 1.34″ of precipitation and 12.4″ of snow fell at Duluth, Minnesota.
Source: National Weather Service, Duluth, MN.
Note: Consecutive number of days at or above 32 degrees has ended at International Falls Minnesota. The high temperature on November 26th, 2009 was 28 degrees which ended the streak at 242 straight days at or above 32 degrees. The record was 246 set in 1958 while second place occurred in 2001 with 244 days.
Forecast Discussion for Northeast Minnesota and Northwest Wisconsin
(Today’s Weather)
It has definately turned cooler across our area over the last two days but still nothing terribly cold…But that could change by later next week. Partly-mostly cloudy skies occurred in our area Today with a tight baroclinic zone in place across the Northern Plains/Upper Midwest/Western High Plains region. High temperatures ranged from the 30s across Northern Minnesota and Northwest Wisconsin to the 50s and 60s over the Western High Plains and Central Plains. 850 mb temperatures as of 5 PM ranged from zero to -3 degrees C in Northeast Minnesota to +2 to +7 degrees C across Western and Southern parts of our area. Winds Today were out of the south or east under 15 mph. Weather map early This Evening featured low pressure of 1008 mb centered in Eastern South Dakota with a trough stretching from Western Ontario Province south through the Eastern Dakotas.
(Today’s Upper Level Analysis)
West to east 500 mb flow was in place across the Upper Midwest Today with a (534 meter) 500 mb low lifting north through the Northeast U.S. while an upper level trough digs south-southeast through California. Lots of mid and high level moisture was pushing east through the Northern Rockies/Northern Plains/and Central Rockies out ahead of the Western U.S. trough early This Evening per water vapor satellite imagery. 60-150 meter 12 hour 500 mb height falls covered portions of the Northern Rockies and Western U.S. Today near this upper level trough.
(Tonight)
Partly to mostly cloudy skies will be found across Northern Minnesota with low pressure remaining to our west-southwest while a trough edges east into the Upper Midwest. Lows Tonight will be in the 20s and 30s with variable winds under 15 mph.
(Saturday and Saturday Night)
Low pressure will pass south-southeast of our area during this period while a trough passes east through Northern Minnesota and Northwest Wisconsin. Partly sunny-mostly cloudy skies are forecast on Saturday with mostly cloudy skies in store for Saturday Night. Some light snow or flurries are possible by Saturday Night but little if any accumulation of snow is expected at this time. Highs Tomorrow will be in the 30s but some 40s are possible in parts of Northwest Wisconsin. Lows Tomorrow Night will be in the 20s and lower 30s. Winds during this period will be out of the north or west under 20 mph.
(Extended Forecast)
Flurries or some snow showers could linger around our area for Sunday and then dry weather is expected from Sunday Night into early next week. Highs Sunday and Monday will be mainly in the 30s with lows Sunday Night and Monday Night in the teens and 20s.
By the middle to end of next week will see an area of low pressure head east or east-southeast out of Western Canada while another area of low pressure develops near the Gulf Coast states. Some of the forecast models Today and over the last few days for that matter have been phasing these two seperate lows into one area of low pressure somewhere over the Eastern Great Lakes region later next week while an upper level trough develops across the Upper Midwest and Great Lakes region. Some measurable snow could develop around our area sometime the middle or end of next week if these systems can phase together. If the pattern remains unphased which is quite possible then we would only see some flurries or perhaps a few snow showers later next week.
The bigger weather headline could ultimately be the temperatures as it does appear that some arctic air could slip south out of Central Canada into the Northern Plains/Upper Midwest later next week. 850 mb temperatures could drop into the minus teens below zero C…Which could result in daytime highs actually falling below normal for a change while Overnight lows could get close to the zero degree mark but that would be dependent on sky conditions and wind speeds. The overall trend during the first week or two of December is for a colder weather regime across the Upper Midwest with a couple arctic air outbreaks looking possible.
5 Day Forecast for Duluth/Superior
.Tonight… Partly to mostly cloudy. Low 25 to 30. Wind south to southeast under 12 mph.
.Saturday… Partly sunny. High 33 to 38. Wind becoming northwest at 10 to 15 mph.
.Saturday Night… Mostly cloudy. Flurries possible. Low 25 to 30. Wind northwest at 10 to 15 mph.
.Sunday… Flurries possible. Mostly cloudy. High 32 to 35.
.Sunday Night… Partly cloudy. Low 20 to 25.
.Monday… Partly cloudy. High 30 to 35.
.Monday Night… Partly cloudy. Low 20 to 25.
.Tuesday… Partly sunny. High 35 to 40.
Normal High Temperature Tomorrow 29 degrees
Normal Low Temperature Tomorrow 14 degrees
Tim
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