Wednesday, February 23, 2011

2/23/11: Wednesday's Weather Report

Issued at 5:00 PM CST, Wednesday, February 23rd, 2011

Local snowfall report for Wednesday, February 23rd, 2011.  Source:  NWS Duluth, Minnesota.

3 miles east of Orr, MN (St. Louis county)  2.6"
7 miles southeast of Grand Rapids, MN (Itasca county)  2.2"
Cotton, MN (St. Louis county)  2.1"
15 miles north of Grand Rapids, MN (Itasca county)  2.0"
Nashwauk, MN (Itasca county)  2.0"
Lutsen, MN (Cook county)  1.2"

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

Low pressure of 1011mb was centered in Northern Minnesota as of 4 PM with a cold front attached to this low extending south through Central Minnesota.  Good lift and steep mid level lapse rates led to some bands of moderate to heavy snow Today across Northcentral-Northeast Minnesota with generally 1-2" with isolated 3" accumulations reported north of Highway 2 in Minnesota.  High temperatures Today were in the 20s to lower 30s with south, southeast, or southwest winds under 20 mph.

Today's Upper Level Analysis:

Southwest 500mb flow was in place across the Upper Midwest Today with a vigorous disturbance heading E/NE through the Upper Midwest per water vapor satellite imagery.  An upper level low/500mb trough covered the Pacific Northwest/Western Canada with another system charging east-southeast out of California.  The storm moving into the Southwest U.S. will lead to a severe weather and possible tornado outbreak on Thursday across Dixie Alley with a winter storm to the northwest-north of the surface low. 

Tonight:

Low pressure will exit our area to the NE with a cold front sweeping east through our area This Evening.  Snow will taper off to flurries from west to east This Evening in Northern-Northeast Minnesota with total accumulations of 1-3".  Scattered snow showers and flurries could occur elsewhere This Evening with accumulations under 1".  Mostly cloudy skies with patchy light freezing drizzle is also possible for Tonight.  Lows will be in the single digits and teens with winds shifting to the north and west at 10-20 mph.

Thursday and Thursday Night:

Strong high pressure will be centered to our W/NW while low pressure tracks northeast out of the Southern Plains.  Partly to mostly cloudy skies with highs in the teens and 20s on Thursday with lows Thursday Night in the single digits below to single digits above zero with some teens below possible in Northern Minnesota.  North or northwest winds at 10-20 mph are expected during this period.

Extended Forecast:

An occasional flurry risk from Friday through the weekend, but for the most part our area will generally be dry as strong high pressure builds into the Upper Midwest late this week through the weekend.  Another powerful storm is forecast to lift northeast out of the Southern Plains, toward the Ohio Valley or Eastern Great Lakes from Sunday into Monday but on it's present track this system would have no effect on Northern Minnesota or Northwest Wisconsin's weather.  Highs for Friday and Saturday will be in the single digits and teens with lows Friday Night in the single digits and teens below zero, maybe some 20s below in Northern Minnesota.  Lows Saturday Night will be in the single digits below to single digits above zero with some teens below possible in Northern Minnesota.

5 Day Forecast for Duluth/Superior

.Tonight...  Occasional snow showers and flurries This Evening.  Accumulations 1" or less.  Mostly cloudy with patchy light freezing drizzle also possible This Evening.  Low 10 to 15.  Wind south to southwest at 5 to 15 mph becoming northwest.

.Thursday...  Partly sunny.  High 20 to 25.  Wind northwest at 10 to 20 mph.

.Thursday Night...  Partly cloudy.  Low zero to 5 below.

.Friday...  Partly sunny.  High 8 to 13.

.Friday Night...  Partly cloudy.  Low 3 below to 8 below.

.Saturday...  Partly cloudy.  High 10 to 15.

.Saturday Night...  Partly cloudy.  Low 3 below to 2 above.

.Sunday...  Partly sunny.  High 20 to 25.

Normal temperatures for Tomorrow

High:  27
Low:    8

Sunrise Tomorrow:  6:58 AM CST
Sunset Tomorrow:   5:47 PM CST

Tim