Sunday, August 8, 2010

8/8/10: Sunday's Weather Report

Issued at 6:12 PM CDT, Sunday, August 8th, 2010

FLASH FLOODING AND SOME SEVERE WEATHER HIT PORTIONS OF THE UPPER MIDWEST ON SATURDAY, AUGUST 7TH, 2010.

Storm reports across Northern Minnesota and Northwest Wisconsin from Saturday Evening/Sunday Morning, August 7th and 8th, 2010. Source: NWS Duluth, MN.

*9:13 PM CDT 8/7/10: Thunderstorm Wind Damage. Pine River MN (Cass County) Cass County Sheriff reports several calls of trees down near Pine River.

*9:25 PM CDT 8/7/10: Thunderstorm Wind Damage. Crosslake MN (Crow Wing County) A tree was reported down on County Road 1, near Crosslake.

*9:50 PM CDT 8/7/10: 1.00" diameter hail. 5 miles South of Oliver WI (Douglas County)

*10:00 PM CDT 8/7/10: Tornado. New Post WI (Sawyer County) Sawyer County Sheriff reports numerous trees down from a possible tornado.

*10:15 PM CDT 8/7/10: Funnel Cloud. 10 miles Northwest of Winter WI (Sawyer County)

*11:03 PM CDT 8/7/10: 0.25" diameter hail. Loretta WI (Sawyer County)

*11:35 PM CDT 8/7/10: Thunderstorm Wind Damage. 1 mile Southwest of Siren WI (Burnett County) Tree down reported by Burnett County Sheriff.

LOCAL FLOOD REPORTS FROM SATURDAY, AUGUST 7TH, 2010... Source: NWS Duluth, MN.

*11:06 PM CDT 8/7/10: Proctor MN (St. Louis County) 3.00" of rain.

*11:36 PM CDT 8/7/10: Duluth MN (St. Louis County) 1.29" of rain.

*11:39 PM CDT 8/7/10: FLASH FLOOD. Duluth MN (St. Louis County) Water over road in West Duluth along Riverside Road and Grand Ave. Cars driving thrugh water have stalled.

*11:45 PM CDT 8/7/10: 1 mile West of Park Falls WI (Price County) 2.75" of rain since 2:00 PM CDT Saturday.

*11:59 PM CDT 8/7/10: FLASH FLOOD. Phillips WI (Price County) Street flooding along Highway 13 in Phillips.

*12:02 AM CDT 8/8/10: 8 miles Northwest of Phillips WI (Price County) 3.93" of rain between 10:45 PM and 12:00 AM CDT.

*12:21 AM CDT 8/8/10: Duluth MN (St. Louis County) 4.45" of rain since 10:00 PM CDT reported at 47th Ave. West in Duluth. Water flowing along Grand Ave.

Note: Reports of some serious flooding late Saturday Evening in Morgan Park (Duluth, MN) at 88th Ave. West, near the stop light...via Channel 6 news.

Western Minnesota tornado reports from Saturday, August 7th, 2010. Source: SPC.

*6:26 PM CDT 8/7/10: Tornado. 3 miles west of Campbell MN (Wilkin County)

*6:50 PM CDT 8/7/10: Tornado. 8 miles south of Fergus Falls MN (Otter Tail County)

*8:05 PM CDT 8/7/10: Tornado. 3 miles west of Evansville MN (Douglas County)

*8:18 PM CDT 8/7/10: Tornado. 4 miles south of Evansville MN (Douglas County)

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

Today's Weather:

A variable day in terms of weather across our local area. High temperatures Today ranged from the 80s north of the Iron Range and also around the Brainerd Lakes and Hayward areas with upper 60s and lower 70s common around the head of Lake Superior and along the North Shore. Dewpoints Today were in the 60s and 70s with late Afternoon PWS of 1.30-1.70"! Lots of low clouds along with areas of fog prevailed Today near portions of Lake Superior while areas farther Inland saw a mix of sun and clouds.

Strong instability was in place away from Lake Superior This Afternoon with CAPES of 1000-2500 j/kg and Lifted Indices from -2/-8 degrees C. This moisture combined with a weak surface boundary in Northern Minnesota has resulted in the development of a few showers and thunderstorms late This Afternoon in far Northern Koochiching County Minnesota. Severe storms have been tracking SE through portions of Ontario Province Today while some additional thunderstorms have been trying to organize in parts of Northwest Minnesota. A seperate boundary located across the South half of Minnesota has even more instability to work with compared to the one up north, and this has resulted in an eruption of scattered severe thunderstorms over the Twin Cities Metro area early This Evening.

This Evening's Upper Level Analysis:

West-southwest flow aloft was in place over the Upper Midwest per RUC model analysis and water vapor satellite imagery. Several disturbances embedded within this 500 mb flow are tracking from the Rockies through the Northern Plains and Upper Midwest or to the west and north of a hot air dome which covered much of the Western High Plains/Central Plains/and parts of the Southern U.S.

Tonight through Monday Night:

Isolated showers and thunderstorms with a threat for heavy rain and severe weather with damaging winds and large hail should dissipate by Midnight in Northern Minnesota...Koochiching, Itascsa and Northern St. Louis Counties will be most susceptible to see some strong or severe convection This Evening...Otherwise the rest of this period looks generally dry, but with lingering instability and moisture in place, a rogue shower or thunderstorm is certainly possible Monday Afternoon and Evening. Partly-mostly cloudy skies will be found in our area Tonight through Tomorrow Night with lows both nights in the 50s and 60s with highs Tomorrow in the 80s and 90s, but it could be cooler at times close to Lake Superior. Areas of fog some of which could be dense will also be possible late Tonight into early Tomorrow due to the light winds and high levels of moisture in place. Winds during this period will be variable in direction under 15 mph.

Extended Forecast:

The overall weather pattern will change little from Tuesday through Friday with a southwest or west-southwest flow aloft continuing over the Upper Midwest. Disturbances/areas of low pressure will pass through the Northern Plains and Upper Midwest from time to time which will result in scattered showers/thunderstorms across our area from Tuesday into Friday. The prospects for severe weather seem rather low at this point with areas of heavy rainfall probably the bigger concern the way it looks now. High temperatures Tuesday and Wednesday will be in the 70s and 80s in Northern Minnesota and Northwest Wisconsin with low temperatures generally in the 60s both nights.

5 Day Forecast for Duluth/Superior

.Tonight... Areas of fog which could become dense at times. Mostly cloudy. Low 58 to 63. Wind east at 5 to 15 mph.

.Monday... Areas of fog early, skies becoming partly to mostly sunny. Warmer. High 83 to 88. Wind becoming west at 5 to 15 mph.

.Monday Night... Partly cloudy. Low 60 to 65. Wind variable at 5 to 15 mph.

.Tuesday... Partly sunny. Showers or thunderstorms possible. High 78 to 83. Chance of rain 30%.

.Tuesday Night... Showers or thunderstorms possible. Mostly cloudy. Low 62 to 67. Chance of rain 30%.

.Wednesday... Showers or thunderstorms possible. Partly sunny. High 80 to 85. Chance of rain 30%.

.Wednesday Night... Partly cloudy. Low 60 to 65.

.Thursday... Partly cloudy. High 80 to 85.

Normal High Temperature Tomorrow 76 degrees

Normal Low Temperature Tomorrow 55 degrees

Tim