Saturday, April 23, 2011

4/23/11: Saturday's Weather Report

Issued at 4:12 PM CDT, Saturday, April 23rd, 2011

Several inches of snow accumulated late last night and early This Morning in portions of Northeast Minnesota and Northwest Wisconsin.  Here are some snowfall reports from Friday and Saturday, April 22nd-23rd, 2011.  Source:  NWS Duluth, MN.

Gile, WI (Iron county)  5.0"
2 miles east of Wales, MN (Lake county)  4.2"
Glidden, WI (Ashland county)  4.0"
Babbitt, MN (St. Louis county)  3.0"
3 miles west of Butternut, WI (Ashland county)  2.5"
Chisholm, MN (St. Louis county)  2.5"
Park Falls, WI (Price county)  2.2"
Silver Bay, MN (Lake county)  2.0"
Embarrass, MN (St. Louis county)  2.0"
Saginaw, MN (St. Louis county)  1.5"
5 miles northwest of Grand Marais, MN (Cook county)  1.0"

Duluth, MN (St. Louis county)  0.6" measured at the NWS.

Precipitation totals from Friday-early Saturday, April 22nd-23rd, 2011.  Source:  NWS Duluth, MN.

International Falls, MN:  0.23"
Brainerd, MN:  0.52"
Grand Marais, MN:  0.39"
Hibbing, MN:  0.64"
Ashland, WI:  0.45"
Hayward, WI:  0.20"
Dixon Lake, MN:  0.51"
Littlefork, MN:  0.40"
Northome, MN:  0.35"
Cook, MN:  0.43"
Embarrass, MN:  0.64"
Floodwood, MN:  0.49"
Upson, WI:  0.70"

Duluth, MN:  0.47" measured at the NWS.

Note:  Another severe thunderstorm outbreak developed Friday Evening, April 22nd, 2011 across portions of the Southern Plains, Mid-Mississippi Valley, and Ohio Valley areas.  309 severe weather reports/26 tornadoes occurred in these areas per Storm Prediction Center

Weather Headlines:

*Scattered showers end This Evening
*Mainly dry late Tonight through Monday
*Warmer temperatures move in for Sunday and Monday
*Model agreement is poor for next Tuesday and Wednesday

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

Low pressure which brought the rain and snow to our area Friday Night and This Morning has moved into Western Quebec Province late This Afternoon with high pressure centered in Western Nebraska.  Skies were mostly cloudy Today with spotty instability showers moving southeast through Northern-Northeast Minnesota.  Highs Today were mainly in the 40s, but a few locales were close to 50 degrees This Afternoon.  Winds were out of the north or northwest under 15 mph.

Today's Upper Level Analysis:

A west-southwest 500mb flow was in place from the Southern Rockies through the Central Plains and Northeast U.S. while a west-northwest H5 flow stretched from the Northern Rockies to the Upper Midwest.  An upper level trough covered the Pacific Northwest per water vapor satellite imagery with several disturbances heading E-NE through the Southern Rockies to Ohio Valley.

Tonight:

Scattered showers will end by mid-Evening.  Partly to mostly cloudy skies will be found in our area Tonight with lows mainly in the 30s.  Winds will be out of the north or west under 15 mph.

Easter Sunday and Sunday Night:

High pressure will head east out of the Western High Plains with a milder southwest wind developing in our area.  Highs on Sunday will be in the 50s to lower 60s with lows Sunday Night in the 30s to around 40 degrees.  Partly to mostly sunny skies are forecast Tomorrow with the possibility for a few Afternoon showers in Northern Minnesota.  Sunday Night will be dry with partly cloudy skies.  Winds will be out of the southwest at 10-20 mph during this period.

Extended Forecast:

Monday and Monday Night, April 25th:  Looks dry in our area with a stationary front off to our north while low pressure develops in the Southcentral Plains.  Highs on Monday will be in the 50s and 60s, but it will be turning cooler near Lake Superior as onshore winds develop.  Lows Monday Night will be in the 30s to lower 40s.

Tuesday and Tuesday Night, April 26th:  Model differences continue during this period with the track of a low pressure system.  The GEM-GLOBAL, UK, and EURO models are farther west-north with this system which would result in rain spreading into Northwest Wisconsin and Northeast-Eastern Minnesota Tuesday Afternoon through Tuesday Night.  The GFS is farther south-east which would keep most of our area dry.  Highs on Tuesday will be in the 40s and 50s with 30s near Lake Superior.  Lows Tuesday Night will mainly be in the 30s.  Note:  Strong E-NE winds could develop during this period near Lake Superior, especially if this low takes the northern route.  A few of the models during the past few days have shown 850mb wind speeds increasing to 40 to 60 knots on Tuesday which would result in wind gusts >35 mph.

Some lingering showers are possible Wednesday and Thursday, April 27th-28th as an upper level trough pushes slowly east across the Upper Midwest.  It does appear that the secondary low which will develop in the Southern Plains on Wednesday will track too far east to give us any rain or snow for mid-week.

5 Day Forecast for Duluth/Superior

.Tonight...  Scattered showers before 9 PM.  Considerable cloudiness with partial clearing late.  Low 30 to 35.  Wind northwest at 5 to 15 mph.

.Easter Sunday...  Warmer.  First time above 50 degrees since April 13th.  Partly sunny.  High 57 to 62.  Wind southwest at 10 to 20 mph.

.Sunday Night...  Partly cloudy.  Low 35 to 40.  Wind southwest at 10 to 15 mph.

.Monday...  Partly cloudy.  High 58 to 63 but turning cooler near Lake Superior late in the day.

.Monday Night...  Partly to mostly cloudy.  Low 35 to 40.

.Tuesday...  Mostly cloudy and cooler.  Breezy.  Rain possible.  High 40 to 45.  East wind gusting to 30 mph.

.Tuesday Night...  Mostly cloudy.  Rain possible.  Low 33 to 35.

.Wednesday...  Mostly cloudy.  Showers possible.  High 40 to 45.

Normal temperatures for Today

High:  53
Low:  32

Sunrise Tomorrow:  6:06 AM CDT
Sunset Tomorrow:   8:09 PM CDT

Tim