Thursday, July 15, 2010

7/15/10: Thursday's Weather Report

Issued at 8:25 PM CDT, Thursday, July 15th, 2010

...WIDESPREAD SEVERE WEATHER HIT THE NORTHERN PLAINS AND UPPER MIDWEST FROM TUESDAY NIGHT THROUGH WEDNESDAY EVENING...

*200 severe weather reports occurred across the U.S. on Wednesday, July 14th, 2010 with the bulk of these reports coming out of the Upper Midwest and portions of the Central Plains.

*Tornado count from Wednesday, July 14th, 2010: 10. 4 tornadoes in Minnesota and 6 in Wisconsin.

*Tornado reports from Minnesota. Source: NWS Chanhassen and Duluth, MN.

2:32 PM CDT 7/14/10: Tornado. 1 mile North of Northfield MN (Rice County)

2:40 PM CDT 7/14/10: Tornado. Lakeville MN (Dakota County)

2:43 PM CDT 7/14/10: Tornado. 2 miles Northwest of Randolph MN (Dakota County)

6:15 PM CDT 7/14/10: Unconfirmed tornado. 5 miles East-Southeast of Cloverdale MN (Pine County) Possible tornado near Pathfinder Village, just east of Hinckley Minnesota, near Highway 48.

*This severe weather outbreak started on Tuesday, July 13th, 2010 with 2 tornadoes in far Western Minnesota.

*The tornadoes occurred between 8-10 PM Tuesday with one of the tornadoes touching down 7 miles East of Georgetown MN (Clay County at 8:08 PM CDT) The second tornado occurred at 10:09 PM CDT in Dent MN (Otter Tail County)

*The next round of severe weather formed out in portions of North Dakota late Tuesday Night/early Wednesday Morning...Between the hours of 11:00 PM and 3:00 AM. These storms dropped some monster size hail as numerous supercells exploded during the night over portions of Southern and Central North Dakota. Some of the hail was as big as 4.25" in diameter! Extensive damage was done to vehicles and homes because of the very large hail that hit parts of North Dakota late Tuesday Night.

Here are the severe weather reports that occurred around Northern Minnesota and Northwest Wisconsin from Wednesday, July 14th, 2010. Source: NWS Duluth, MN.

*9:02 AM CDT 7/14/10: Thunderstorm wind damage. 2 miles South of Cromwell MN (Carlton County) Trees blown down across Highway 73, south of Cromwell MN.

*9:25 AM CDT 7/14/10: Thunderstorm wind damage. Scanlon MN (Carlton County) Trees down in Scanlon, near 22nd street and Dodridge.

*9:22 AM CDT 7/14/10: Thunderstorm wind damage. Cloquet MN (Carlton County) Trees reported down in and around Cloquet...Including a 40 foot pine tree near 14th and Washington.

*9:46 AM CDT 7/14/10: Thunderstorm wind gust. 6 miles West-Southwest of Poplar WI (Douglas County) 56 mph wind gust reported at a private weather station.

*9:28 AM CDT 7/14/10: Thunderstorm wind gust. 2 miles East of Pine City MN (Pine County) 49 mph wind gust, measured at the Pine City School.

*9:48 AM CDT 7/14/10: Thunderstorm wind damage. 4 miles North of Grantsburg WI (Burnett County) Trees blown down. Wind estimated at 60 mph, possibly stronger. Spotter reported 1.90" of rain in about an hour!

*9:48 AM CDT 7/14/10: Marine thunderstorm wind gust. 2 miles Northeast of Superior WI. 41 knots/49 mph wind gust measured at Sky Harbor Airport.

*10:00 AM CDT 7/14/10: Thunderstorm wind damage. Webster WI (Burnett County) Oakland Township, large oak tree blown down. Winds estimated at 60 mph. 1.40" of rain fell in 30 minutes!

*10:00 AM CDT 7/14/10: Thunderstorm wind damage. 1 mile East of Gheen MN (St. Louis County) County Highway Department clearing several small trees covering the road. Pea sized hail was also reported.

*10:02 AM CDT 7/14/10: Thunderstorm wind damage. Siren WI (Burnett County) Burnett County Sheriff dispatch reports trees blown down across the County.

*10:15 AM CDT 7/14/10: Thunderstorm wind damage. Minong WI (Washburn County) Widespread tree damage with trees snapped or blown over in Minong and Chicog Townships.

*10:25 AM CDT 7/14/10: Thunderstorm wind damage. Trego WI (Washburn County) Trees down across Washburn County, particularly in the Trego area and just north of Spooner.

*10:37 AM CDT 7/14/10: Thunderstorm wind damage. 5 miles North of Hayward WI (Sawyer County) Small outbuilding blown and shifted off foundation in Hayward. Large trees downed in Lenroot and Hayward Townships and most significant tree damage was in Western Sawyer County, in these areas.

*10:37 AM CDT 7/14/10: Thunderstorm wind damage. Hayward WI (Sawyer County) Roof off a home in Hayward. Garage destroyed.

*10:38 AM CDT 7/14/10: Thunderstorm wind damage. 3 miles South of Hayward WI (Sawyer County) Trees down.

*10:39 AM CDT 7/14/10: Thunderstorm wind damage. 2 miles Northeast of Hayward WI (Sawyer County) Doors blown off hangers at the Hayward Airport. A few sections of roofs of the hangers also blown off. Power outage at the Hayward Airport.

*10:50 AM CDT 7/14/10: Thunderstorm wind damage. 10 miles West of Drummond WI (Bayfield County) Trees down in the Barnes Wisconsin area.

*11:50 AM CDT 7/14/10: Thunderstorm wind damage. 17 miles East of Fifield WI (Price County) Trees down near Pike Lake in the Chequamegon National Forest.

*12:00 PM CDT 7/14/10: Thunderstorm wind damage. Phillips WI (Price County) Trees and power lines down around Phillips.

*12:10 PM CDT 7/14/10: Thunderstorm wind damage. 11 miles East of Phillips WI (Price County) Trees down along County Highway W. Some trees fell into power lines, bringing them down.

*3:10 PM CDT 7/14/10: Thunderstorm wind damage. Mellen WI (Ashland County) Power lines down across Highway 13.

*3:12 PM CDT 7/14/10: Thunderstorm wind damage. 1 mile West of Mellen WI (Ashland County) Tree branches down.

*3:25 PM CDT 7/14/10: Thunderstorm wind damage. 3 miles North of Brainerd MN (Crow Wing County) 2 big oak trees snapped 6-10 feet off the ground. Lots of large oak trees down.

*3:27 PM CDT 7/14/10: Thunderstorm wind gust. 4 miles Northeast of Brainerd MN (Crow Wing County) 59 mph wind gust along with 1/4 mile visibility in heavy rain.

*3:30 PM CDT 7/14/10: Thunderstorm wind damage. 2 miles Northeast of Brainerd MN (Crow Wing County) Many areas of tree branches down. Trees down along with downed power lines just northeast of Brainerd.

*3:36 PM CDT 7/14/10: 1.50" diameter hail. 3 miles West of Emily MN (Crow Wing County) 40 mph winds with visibility of around 300 feet.

*4:10 PM CDT 7/14/10: Thunderstorm wind damage. Park Falls WI (Price County) Trees down.

*4:30 PM CDT 7/14/10: Thunderstorm wind damage. Phillips WI (Price County) Trees down county wide. Ogema and Park Falls were hit hard.

Following are heavy rain/flash flood reports from Wednesday, July 14th, 2010. Source: NWS Duluth, MN.

*Couderary WI (Sawyer County) 2.70"

*Hill City MN (Aitkin County) 1.80". 1.00" of rain fell during the Afternoon with 0.80" of rain falling during the Morning.

*Flash Flood* Fifield WI (Price County) Street flooding. Widespread water over roads. Radar estimated that 4-5" of rain fell in the Northwest part of Price County, from Park Falls to Fifield.

*Phillips WI (Price County) 2.21". 1.12" fell between 1:30-5:30 PM CDT.

*Sandstone MN (Pine County) 1.70"

*1 mile West of Park Falls WI (Price County) 3.10"

*8 miles Northwest of Phillips WI (Price County) 2.40"

*3 miles North of Brainerd MN (Crow Wing County) 2.10"

Here are some rainfall totals that occurred in Northern Minnesota and Northwest Wisconsin from Wednesday, July 14th, 2010. Source: NWS Duluth, MN.

Duluth MN: 0.67"

International Falls MN: 0.76"

Brainerd MN: 1.83"

Grand Marais MN: 1.88"

Hibbing MN: 0.93"

Ashland WI: 0.44"

Grand Portage MN: 0.99"

Cook MN: 0.70"

Kabetogama MN: 1.05"

Northome MN: 0.64"

2 miles South of Tower MN: 1.90"

Embarrass MN: 1.63"

4 miles East of Island Lake MN: 0.92"

Bruno MN: 1.14"

3 miles East of Orr MN: 0.81"

9 miles North of Bayfield WI: 1.12"

Gordon WI: 1.40"

Solon Springs WI: 1.32"

Winter WI: 2.30"

Webster WI: 2.42"

Butternut WI: 2.04"

Upson WI: 0.80"

Gurney WI: 0.62"

Sarona WI: 3.27"

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

The daytime hours featured mostly sunny skies with breezy west winds from 10-25 mph with gusts to 30 mph along with high temperatures in the middle 70s to lower 80s while dewpoints dropped into the 40s and 50s. By late This Afternoon, an upper level disturbance moved in from Southern Manitoba Province. This disturbance combined with enough low level moisture in place in conjunction with a build-up of some instability with CAPES of 500-1000 j/kg led to the development of scattered showers and a few thunderstorms across portions of Northcentral and Northeast Minnesota. One of these storms even turned severe for a time late This Afternoon around Bemidji Minnesota, and southeast through the Lake Winni, Deer River, Grand Rapids area in Northern Minnesota.

This Evening's Upper Level Analysis:

Strong upper level low was centered in Northwest Ontario Province This Evening per water vapor satellite imagery with a potent upper level disturbance approaching Thunder Bay Ontario Canada as of mid-Evening. The tail end of that disturbance was pushing southeast through Northern Minnesota and has been responsible in generating a few showers/thunderstorms This Evening. A northwest flow aloft covered the Upper Midwest This Evening per RUC model analysis.

Rest of Tonight:

A few showers and isolated thunderstorms should dissipate by Midnight. Most of this activity will be confined to an area north of a line from Walker to Moose Lake Minnesota and north of a Gordon to Upson line in Northwest Wisconsin. Occasional lightning strikes, wind gusts to 30 mph, and brief heavy downpours will be possible in the strongest thunderstorms. Otherwise for Tonight expect partly-mostly cloudy skies with the upper level disturbance over Northern Minnesota This Evening exiting to our east Overnight. Lows Tonight will be in the 50s to lower 60s with west winds at 10-20 mph.

Friday and Friday Night:

Partly cloudy-mostly sunny skies will be found across our area on Friday with mostly clear skies Friday Night. Highs Tomorrow will be in the 70s and 80s with lows Tomorrow Night in the 50s to lower 60s. Winds will be out of the northwest or west on Friday at 10-25 mph with west or south winds Tomorrow Night at 5-15 mph.

Extended Forecast:

Low pressure along with it's warm front and cold front will push east through the Upper Midwest Saturday into early Sunday. This system combined with increasing amounts of moisture and instability should lead to scattered shower and thunderstorm development across Northern Minnesota and Northwest Wisconsin from Saturday into early Sunday. Favorable shear and strong jet stream winds overhead could lead to a few of these storms becoming severe Saturday Afternoon or Night with damaging winds and large hail being the main threats at this time. Highs on Saturday will be mainly in the 80s with dewpoints rising through the 50s and 60s with PWS climbing to between 1.00"-1.75". Lows Saturday Night will be in the 50s and 60s. Low pressure will exit to our east on Sunday which will result in generally dry conditions for our local area after the possibility of some showers Sunday Morning. Highs Sunday will be in the 70s and 80s with lows Sunday Night in the 50s to around 60 degrees.

5 Day Forecast for Duluth/Superior

.Tonight... A few showers and possibly a thunderstorm ending by Midnight. Mostly cloudy with skies becoming mostly clear late. Low 57 to 62. Wind west at 5 to 15 mph.

.Friday... Mostly sunny. High 79 to 84. Wind west to northwest at 10 to 20 mph.

.Friday Night... Mostly clear. Low 57 to 62.

.Saturday... Partly sunny. Showers or thunderstorms possible, mainly late. High 80 to 85. Chance of rain 30%.

.Saturday Night... Showers or thunderstorms possible. Mostly cloudy. Low 58 to 63. Chance of rain 30%.

.Sunday... Showers possible early, otherwise partly to mostly cloudy. High 73 to 78. Chance of rain 20%.

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

.Monday... Partly cloudy. High 75 to 80.

Normal High Temperature Tomorrow 77 degrees

Normal Low Temperature Tomorrow 55 degrees

Tim