Tuesday, May 24, 2011

5/24/11: Tuesday's Weather Report

Issued at 4:04 PM CDT, Tuesday, May 24th, 2011

*FROST ADVISORY*

The National Weather Service in Duluth, Minnesota has issued a Frost Advisory from 3 AM CDT Tonight until 7 AM CDT Wednesday.  Counties included in the advisory are:  Koochiching MN...Northern Itasca MN...and Northern St. Louis MN.  Some cities included in the advisory are:  International Falls, MN...Northome MN...Bigfork MN...Togo MN...Crane Lake MN...and Ely MN.

Temperatures will drop to the upper 20s to lower 30s early Wednesday Morning which will result in areas of frost in far Northern Minnesota Tonight.

Unprotected tender plants could be damaged or killed by near or below freezing temperatures.

A frost advisory means that frost is possible.  Sensitive outdoor plants may be killed if left uncovered.  Cover tender plants or take them indoors.

Additional storm reports from Sunday, May 22nd, 2011.  Source:  NWS Duluth, MN.

*4:18 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  2 miles north of Mercer, WI (Iron county)  Several trees down.

*2:35 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  13 miles west of Phillips, WI (Price county)  Trees down along county Highway W near the Price and Sawyer county border.

*2:38 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  13 miles west-northwest of Phillips, WI (Price county)  Trees down along Price Lakes road, south of Highway 70.

*3:57 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  10 miles northeast of Butternut, WI (Ashland county)  Sporadic tree damage near and east of Butternut to the northeast into the area just northwest of Turtle Flambeau Flowage.  A large volume of hail fell in Butternut.

*4:27 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  2 miles northeast of Stone Lake, WI (Sawyer county)  Some small trees and tree branches down near Highway 70 and 27 Intersection.

*4:40 PM CDT 5/22/11:  THUNDERSTORM WIND DAMAGE.  Couderay, WI (Sawyer county)  Some small trees and tree branches down east on Highway 70 toward Couderay.

*2:25 PM CDT 5/22/11:  1.25" HAIL.  9 miles south-southeast of Loretta, WI (Sawyer county)  Hail fell at Flambeau River State Park Headquarters.  Sporadic tree damage and a few limbs broken off or trees snapped across parts of the State Forest.

*2:35 PM CDT 5/22/11:  1.25" HAIL.  7 miles east-southeast of Loretta, WI (Sawyer county)  Hail accumulated to a depth of 6" on sides of roads.

*MINNEAPOLIS, MN TORNADO UPDATE*

Nearly 5 mile path from suburban St. Louis Park through North Minneapolis into Fridley.  Strong EF1, possibly EF2 rating.  The tornado was on the ground for 6.25 miles in Hennepin county plus an additional 8 miles in Anoka and Ramsey counties.  Wind speeds in a EF1 tornado is 109 mph.  EF2 wind speeds range from 110-137 mph.

WEATHER HEADLINES:

-Cool and dry weather pattern thru Friday
-Frost threat Tonight and for the next couple nights
-Rain may return at times this weekend into early next week

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

Partly to mostly cloudy skies were found in our area Today with high temperatures ranging from the 60s in Southern areas with 40s near Lake Superior and 50s in Northern Minnesota.  Winds Today were out of the north or east under 20 mph.

Today's Upper Level Analysis:

W-NW 500mb flow covered the Upper Midwest per RUC model analysis with a SW flow aloft in place in the Plains as a potent disturbance ejects east out of Colorado.  An 80 knot mid level jet and a 110+ knot upper level jet was located on the south side of this system and it's this jet stream energy that is helping to trigger another round of severe weather for portions of Oklahoma, Kansas, and Texas Today.

Tonight through Wednesday Night:

High pressure will be centered to our north during this period while a weakening cold front drops south out of Central Canada and through our area Wednesday Afternoon/Evening.  Skies will become partly cloudy Tonight and will remain that way into Wednesday Night.  The strong low pressure system in Southwestern Kansas This Afternoon will move into Missouri with it's precipitation shield staying south of Northern Minnesota and Northwest Wisconsin.  Low temperatures Tonight and Wednesday Night will be in the 30s to lower 40s with some 20s expected in the typical cold spots.  Highs Tomorrow will be in the 50s and 60s with 40s near Lake Superior.  Winds through Tomorrow Night will be out of the north or east under 20 mph.

Extended Forecast:

Quiet weather pattern continues in our area for Thursday and Friday, May 26th-27th.  High temperatures will be in the 50s and 60s with 40s near Lake Superior for Thursday and Friday with low temperatures in the 30s and 40s with some 20s Thursday Night.  500mb flow is forecast to become west and eventually southwest this weekend into early next week with one or more low pressure systems in the Rockies moving east and possibly northeast.  The computer models remain at odds as to how these systems will track and how far north the warm/humid air gets, and this will determine whether or not our area sees occasional rain with a limited risk of thunderstorms, or if a strong to severe thunderstorm risk unfolds this far north.  At the moment, it would appear that next Monday, May 30th would hold the greatest chance for stronger storms for portions of the Upper Midwest based on latest model data.

5 DAY FORECAST FOR DULUTH/SUPERIOR

.Tonight...  Mostly clear.  Low 35 to 40.  Wind east to northeast at 10 to 15 mph.

.Wednesday...  Mostly sunny.  High 55 to 60 but cooler near Lake Superior.  Wind east to northeast at 10 to 15 mph.

.Wednesday Night...  Mostly clear.  Low 35 to 40.  Wind northeast at 5 to 15 mph.

.Thursday...  Mostly sunny.  High 53 to 58 but cooler near Lake Superior.

.Thursday Night...  Mostly clear.  Low 35 to 40.

.Friday...  Partly sunny.  High 55 to 60 but cooler near Lake Superior.

.Friday Night...  Mostly cloudy.  Showers possible.  Low 38 to 42.

.Saturday...  Mostly cloudy.  Showers possible.  High 50 to 55 but cooler near Lake Superior.

Normal temperatures for Today

High:  66
Low:  43

Wednesday's Pollen Forecast:

Tree:    High
Grass:  None
Weed:  None

Sunrise Tomorrow:  5:24 AM CDT
Sunset Tomorrow:   8:48 PM CDT

Tim