Tuesday, July 5, 2011

7/5/11: Tuesday's Weather Report

Issued at 3:59 PM CDT, Tuesday, July 5th, 2011

Local Storm Reports from Monday, July 4th, 2011.
Source:  NWS Duluth, Minnesota.

*9:35 PM CDT 7/4/11:  THUNDERSTORM WIND DAMAGE.  8 miles south of Inger, MN (Itasca County)  Tree blown down near Ball Club Lake.  Some tree branches blown down around Inger.

*8:45 PM CDT 7/4/11:  THUNDERSTORM WIND DAMAGE.   3 miles southeast of International Falls, MN (Koochiching County)  Report of power lines down near the Intersection of Highway 53 and County Road 332.

*8:42 PM CDT 7/4/11:  THUNDERSTORM WIND GUST.  54 mph.  International Falls, MN (Koochiching County) Measured at the Airport.

Rainfall report for Monday, July 4th, 2011.
Source:  NWS Duluth, MN.

Duluth, MN:  0.17"
International Falls, MN:  0.51"
Brainerd, MN:  0.29"
12 miles north of Isle, MN:  0.40"
7 miles northwest of Brainerd, MN:  0.52"
Cass Lake, MN:  0.45"
Cook, MN:  0.18"
Floodwood, MN:  0.27"
Littlefork, MN:  0.23"
4 miles east of Island Lake, MN:  0.22"

Weather Tidbits for Duluth, MN (Airport location)

-Today marks the 3rd day in a row with a high temperature of at least 80 degrees
-August 29th-31st, 2010 the last time we had 3 consecutive days at or above 80 degrees
-4 out of the first 5 days in July has had a maximum temperature of at least 80 degrees

WEATHER HEADLINES:

-Few showers/thunderstorms This Evening in Northwest Wisconsin
-Pleasant weather late Tonight thru Wednesday Night
-Risk for showers/thunderstorms return late this week and this weekend
-Temperatures to remain at or above seasonal averages thru the weekend

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

A cold front continued to sag south into Northwest Wisconsin and Eastcentral Minnesota This Afternoon.  The atmosphere was rather unstable along and ahead of this front with CAPE of 1000-2000 j/kg with Lifted Indices of -3 to -7 degrees C.  Scattered showers and thunderstorms have been developing This Afternoon in Northwestern Wisconsin, mainly south of a line from Drummond to Upson, no severe weather has occurred so far Today, but heavy downpours and dangerous lightning strikes are likely occurring.  Partly to mostly sunny skies were found in our area Today with highs in the 70s and 80s.  Dewpoints ranged from the upper 40s and 50s in Northern Minnesota to the muggy 60s and lower 70s in Northwest Wisconsin.  Winds Today were out of the north or west at 5-15 mph with some higher gusts.

Today's Upper Level Analysis:

W-NW 500mb flow covered the Upper Midwest per RUC model analysis and water vapor satellite imagery with an upper level ridge over the Rockies, Central and Southwest U.S.

Tonight:

Cold front will exit Northwest Wisconsin This Evening, high pressure will then build into the Upper Midwest as it moves east out of the Northern Plains.  Showers and thunderstorms with locally heavy rain and dangerous lightning will remain a threat until around 7-8 PM This Evening, mainly in Sawyer, Price, Southern Bayfield, Southern Ashland and Iron Counties in Northwest Wisconsin...The strongest of the storms may also have some small hail and wind gusts to 40 mph, but severe weather is not expected.  Skies will be clear to partly cloudy Tonight with lows in the 50s to around 60 degrees, but some 40s are possible in Northern Minnesota.  There could be some patchy late night fog in spots due to the recent rainfall.  Winds Tonight will be out of the north or west under 20 mph.

Wednesday and Wednesday Night:

High pressure will pass through the Upper Midwest during this period.  Partly cloudy skies with highs in the 70s and 80s are on tap for Wednesday with lows Wednesday Night in the 50s to around 60.  North or west winds under 15 mph are expected.

Extended Forecast:

A weak cold front will head southeast across our area Thursday and Thursday Night as high pressure pushes off to our east.  Some moisture and instability will move into the Upper Midwest ahead of this front with CAPE around 1000 j/kg with dewpoints in the 50s and lower 60s with PWS of 1.00-1.25".  Very little shear, weak mid/upper level winds and a weak low level jet means little if any risk for severe weather, but scattered showers and thunderstorms will probably develop Thursday and Thursday Evening in Northern-Eastern Minnesota and Northwest Wisconsin with the main threats being from brief heavy rain and lightning.  Highs on Thursday will be in the 70s and 80s with lows Thursday Night in the 50s to lower 60s.  Dry weather should return to the area Friday and Friday Night, and a lake breeze may also develop by then with high pressure to our north/east while a strong low/upper level trough moves through Western Canada and the Pacific Northwest.  High temperatures on Friday will be in the 70s and 80s with cooler temperatures near Lake Superior.  Lows Friday Night will be in the 50s to around 60 degrees.  That system to our west is forecasted to move into Minnesota this weekend...Stronger winds aloft combined with moderate instability and moisture should accompany this system as it heads into the Upper Midwest.  Scattered showers and thunderstorms with a few severe storms are possible in Northern Minnesota and Northwest Wisconsin Saturday into Sunday based on latest model data.

5 DAY FORECAST FOR DULUTH/SUPERIOR

.Tonight...  Mostly clear.  Low 53 to 58.  Wind north to northwest at 5 to 15 mph with gusts to 20 mph This Evening.

.Wednesday...  Mostly sunny.  High 77 to 82.  Wind northwest at 10 to 15 mph.

.Wednesday Night...  Mostly clear.  Low 55 to 60.  Wind west at 5 to 15 mph.

.Thursday...  Afternoon showers or thunderstorms possible.  Partly sunny.  High 78 to 83.  Chance of rain 30%.

.Thursday Night...  Showers or thunderstorms possible early.  Variable cloudiness.  Low 55 to 60.  Chance of rain 30%.

.Friday...  Partly cloudy.  High 71 to 76 but cooler near Lake Superior.

.Friday Night...  Partly cloudy.  Low 55 to 60.

.Saturday...  Partly sunny.  Showers or thunderstorms possible.  High 70 to 75.  Chance of rain 20%.

Normal temperatures for Today

High:  75 degrees
Low:  53 degrees

Sunrise Tomorrow:  5:22 AM CDT
Sunset Tomorrow:   9:05 PM CDT

Wednesday's Pollen Forecast:

Grass:  High
Tree:    Low
Weed:  None

Tim