Issued at 4:52 PM CDT, Saturday, October 31st, 2009
*Don’t forget to fall back one hour…Turn your clocks back one hour Tonight!
***Happy Halloween to everyone, have a safe and fun time Tonight***
Forecast Discussion for Northeast Minnesota and Northwest Wisconsin
Partly sunny-mostly cloudy skies were found across our area Today with some passing flurries, sprinkles, and snow showers at times but little if any accumulations were reported. Highs Today were in the 30s and lower 40s with 850 mb temperatures as of 4 PM ranging from -4 to -5 degrees C. Winds were out of the west or northwest at 10-20 mph with some higher gusts. Surface map as of 4 PM features an intense area of low pressure centered in Northeast Canada with low pressure of 996 mb centered over the Eastern Alberta-Western Saskatchewan Province area with a warm front attached to this low centered over the Western Dakotas.
(Today’s Upper Level Analysis)
Northwest flow aloft was in control across the Upper Midwest on this last day of October 2009. Axis of the powerful winds aloft which were over our area 24 hours ago have shifted into Eastern Canada Today along with intense 12 hour 500 mb height falls of 150-240 meters! Note: At one point last night height falls reached 270 meters over portions of the Upper Midwest as low pressure was deepening as it passed through Southern Ontario Province. Water vapor satellite imagery reveals that the cold upper trough that was over our area earlier Today was progressing east through the Central and Eastern Great Lakes/Eastern Canada region late This Afternoon with the next system of concern for our area sliding east-southeast through Southwestern Canada. Weak 60 meter 12 hour 500 mb height falls were occurring near this system Today across parts of Western Canada and the Pacific Northwest.
Look for partly-mostly cloudy skies across our area Tonight with some light snow or mixed precipitation possible after Midnight west of a line from International Falls to Brainerd. Any flurries left-over from Today should come to an end early This Evening. Lows Tonight will be in the 20s and 30s with west or northwest winds turning south or southeast at 5-15 mph later in the night.
(Sunday and Sunday Night)
Low pressure currently in Southwest Canada will head east and drag it’s warm front and cold front through the Upper Midwest. A 30-40 knot low level jet will be in place across Northern Minnesota on Sunday and this combined with warm advection and some lift provided by the warm front should be enough to generate some light snow and rain in Northcentral and Northeast Minnesota with lesser chances for mainly light rain showers and sprinkles farther south in Northwest Wisconsin and Eastcentral Minnesota. Any snow accumulations should be under an inch and should be confined to areas north of the Iron Range. Some lingering rain and or snow showers will be possible across our area Sunday Night as the cold front moves through. Highs Tomorrow will be in the 30s and 40s with lows Tomorrow Night in the 20s and 30s. South, southeast, or southwest winds are forecast on Sunday at 10-20 mph with south, west, or northwest winds at 10-25 mph for Sunday Night.
A northwest flow aloft is expected for the Upper Midwest most of next week which will result in some fairly weak low pressure disturbances that will pass east-southeast through the Northern Plains/Upper Midwest. Each one of these systems could bring a period of snow or rain but amounts continue to look fairly light. High temperatures Monday and Tuesday will be in the 30s and 40s across Northern Minnesota and Northwest Wisconsin with lows both nights in the 20s and 30s.
5 Day Forecast for Duluth/Superior
.Tonight… Mostly cloudy although a period of clearing is possible This Evening. Low 28 to 33. Wind west at 10 to 20 mph becoming south to southeast at 5 to 15 mph toward dawn.
.Sunday… Mostly cloudy. Light rain is possible at times which could be mixed with snow during the Morning. High 40 to 45. Wind south at 10 to 20 mph. Chance of precipitation 40%.
.Sunday Night… Mostly cloudy. Rain or snow showers possible. Low 30 to 35. Wind south becoming west at 10 to 20 mph. Chance of precipitation 20%.
.Monday… Partly sunny. High 38 to 43.
.Monday Night… Partly cloudy. Low 25 to 30.
.Tuesday… Partly sunny. High 38 to 43.
.Tuesday Night… Mostly cloudy. Snow showers or flurries possible. Low 28 to 33. Chance of snow 20%.
.Wednesday… Mostly cloudy. Snow or rain showers possible. High 37 to 42. Chance of precipitation 20%.
Normal High Temperature Today 44 degrees
Normal Low Temperature Today 28 degrees