Saturday, September 25, 2010

9/25/10: Saturday's Weather Report

Issued at 3:29 PM CDT, Saturday, September 25th, 2010

All headlines issued by the National Weather Service Duluth, Minnesota

*FREEZE WARNING*

Timing:

1 AM CDT Tonight until 8 AM CDT Sunday

Counties included in the warning:

Northern Cook MN...Northern Lake MN...Central and Northern St. Louis MN...Bayfield WI...Ashland WI...Iron WI...Washburn WI...Sawyer WI...and Price WI...

Some cities included in the warning:

Forest Center MN...Ely MN...Crane Lake MN...Orr MN...Hibbing MN...Melrude MN...Port Wing WI...Bayfield WI...Cable WI...Ashland WI...Butternut WI...Hurley WI...Mercer WI...Minong WI...Shell Lake WI...Hayward WI...Exeland WI...Park Falls WI...Phillips WI...and Ogema WI...

Discussion:

Mostly clear skies and light winds will allow temperatures to fall into the middle 20s to lower 30s in the warning area Tonight and early Sunday which will result in a widespread frost and killing freeze.

A freeze warning means sub-freezing temperatures are imminent or highly likely.  These conditions will kill crops and other sensitive vegetation.

*FROST ADVISORY*

Timing:

1 AM CDT Tonight until 8 AM CDT Sunday

Counties included in the advisory:

Southern Cook MN...Southern Lake MN...Southern St. Louis MN...Carlton MN...Pine MN...Douglas WI...and Burnett WI...

Some cities included in the advisory:

Hovland MN...Grand Portage MN...Grand Marais MN...Silver Bay MN...Finland MN...Two Harbors MN...Duluth MN...Floodwood MN...Cromwell MN...Moose Lake MN...Hinckley MN...Pine City MN...Superior WI...Solon Springs WI...Danbury WI...Grantsburg WI...and Siren WI...

Discussion:

Mostly clear skies and light winds will allow temperatures to fall into the lower to middle 30s in the advisory area Tonight which will result in areas of frost.

A frost advisory means that frost is possible.  Sensitive outdoor plants may be killed if left uncovered.

Rainfall report for Friday, September 24th, 2010.  Source:  NWS Duluth, Minnesota.

Duluth MN:  0.17"
International Falls MN:  0.25"
Hibbing MN:  0.18"
4 miles south of Bruno MN:  0.23"
Embarrass MN:  0.48"
Floodwood MN:  0.21"
Kabetogama MN:  0.52"
3 miles east of Orr MN:  0.54"
Silver Bay MN:  0.23"
Finland MN:  0.25"
Gurney WI:  0.23"
9 miles north of Bayfield WI:  0.24"
Washburn WI:  0.21"

Low temperature report for Saturday, September 25th, 2010.  Source:  NWS Duluth, Minnesota.

Duluth MN:  37 degrees
International Falls MN:  33 degrees
Hibbing MN:  32 degrees
Hayward WI:  33 degrees
Superior WI:  34 degrees
Eveleth MN:  36 degrees
Bruno MN:  35 degrees
Littlefork MN:  35 degrees
Embarrass MN:  33 degrees
Floodwood MN:  32 degrees

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

A low pressure disturbance dropped south-southeast out of the Northern Plains earlier Today and passed well southwest of our local area This Afternoon.  A few light rain showers or sprinkles on the eastern side of this low did make it into the Brainerd Lakes/Aitkin area This Morning, otherwise partly-mostly cloudy skies This Morning turned sunnier during the Afternoon in most areas, but clouds were still a little more extensive especially in far western-southwest areas.  Winds Today were calm or light easterly in direction with high temperatures in the middle 50s to lower 60s which continues the trend of how September has been thus far (below normal) Note:  Today marks the 21st day this month with a below normal high temperature at Duluth, Minnesota.

Today's Upper Level Analysis:

Northerly flow aloft covered the Upper Midwest Today per water vapor satellite imagery as a pretty vigorous disturbance drops S-SE from the Upper Midwest to the Central Plains.  Thursday-Friday's storm which affected the Upper Midwest has moved into Eastern Canada Today while an upper level ridge which covered most of the Southern-Eastern U.S. last week retrogrades to it's new position across the Southwest U.S./Rockies/and Western U.S. Today.

Tonight through Sunday Night:

An area of high pressure averaging 1025 mb will be over our local area Tonight before shifting off to our south/east for Sunday and Sunday Night.  Clear-partly cloudy skies will be found in Northern Minnesota and Northwest Wisconsin during this period with lows in the 20s and 30s Tonight along with areas of frost and patchy fog.  Highs Tomorrow will be in the 50s and 60s with lows Tomorrow Night in the 30s and 40s.  Nearly calm wind Tonight will turn southerly under 20 mph Tomorrow and Tomorrow Night.

Extended Forecast:

A few cold fronts will pass through the Upper Midwest next week.  One sometime Monday or early Tuesday, the other around mid-week.  Minimal moisture associated with these fronts should lead to mainly dry conditions across our area from Monday through Friday of next week with high temps in the 50s and 60s Monday and Tuesday, but a few locales could push toward 70 degrees on Monday, mainly in southern areas.  Lows Monday Night and Tuesday Night will be in the 40s, maybe some 30s in the north.

5 Day Forecast for Duluth/Superior

*FROST ADVISORY* in effect from 1 AM CDT Tonight until 8 AM CDT Sunday

.Tonight...  Mostly clear.  Areas of frost developing.  Low 32 to 37.  Wind east around 12 mph.

.Sunday...  Mostly sunny.  High 58 to 63.  Wind south at 5 to 15 mph.

.Sunday Night...  Mostly clear.  Low 40 to 45.  Wind south to southwest at 5 to 15 mph.

.Monday...  Partly sunny.  High 62 to 67.

.Monday Night...  Partly cloudy.  Low 40 to 45.

.Tuesday...  Partly cloudy.  High 55 to 60.

.Tuesday Night...  Mostly clear.  Low 38 to 43.

.Wednesday...  Partly cloudy.  High 60 to 65.

Normal High Temperature Today 61 degrees
Normal Low Temperature Today 42 degrees

Tim