Severe Thunderstorm Watch this morning

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THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL AND SOUTHERN MINNESOTA

WESTERN WISCONSIN

EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON UNTIL 100 PM CDT.

HAIL TO 1.5 INCHES IN DIAMETER…THUNDERSTORM WIND GUSTS TO 70

MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHEAST

OF EAU CLAIRE WISCONSIN TO 10 MILES SOUTH OF ORTONVILLE

MINNESOTA.

Heavy rain fell across portions of northeast Minnesota and northwest Wisconsin overnight. Three and a third inches of rain was reported at Askov in Pine County, MN and near Floodwood in St. Louis County, MN. The automated gauge at the Duluth Airport captured two and a half inches of rain.

Severe thunderstorms are possible in the southern portion of Minnesota and west central Wisconsin this morning as a cool front slips through the region. Less humid conditions are on tap for Wednesday.

Here’s the complete report of the record dew point for this summer as published Monday afternoon by the Minnesota State Climate Office:

The Exceptionally Muggy Summer of 2011

The National Weather Service is forecasting a break in the high dew point temperatures over the next few days after the muggy day today. So far this summer as of 3pm August 1, there have been 274 hours of dew point temperatures of 70 degrees or higher recorded at the Twin Cities International Airport. The record is 512 hours in 2002. What really stands out are the counts of extremely muggy dew point temperatures. So far this summer as of 3pm August 1, there have been 98 hours of dew point temperatures of 75 degrees or higher. This breaks the old record of 78 hours that was set back on 2001.

Twin Cities International Airport

Greatest Number of hours with dew point

temperature of 70 degrees F

(1945-2011)

Rank Year Hours

———————-

1. 2002 512

2. 1983 392

3. 1995 387

4. 2001 357

5. 1955 345

1981-2010 average = 182

so far in 2011 274

(through 3pm August 1)

Twin Cities International Airport

Greatest Number of hours with dew point

temperature of 75 degrees F

(1945-2011)

Rank Year Hours

——————–

1. 2011 98 (as of 3pm August 1)

2. 2001 78

3. 1999 64

4. 1987 60

5. 1995 56

1981-2010 average = 18

  • Luke

    Any info on the strength of the thunderstorm that came through St. Paul at about 5:30 this morning?

    There are lots of arm-sized branches down in my neighborhood on the East Side and it just about ripped the “storm door” right off the front of my house.

    Any idea if it was severe or not? Any reports of damage anywhere else?

  • Craig

    St. Paul Airport reported a wind gust of less than 20 mph this morning. I have not seen a report to the NWS of strong winds in St. Paul with the 530AM storm. Could have been very localized. Branches down usual support wind gusts of 40 mph.

    CE

  • Terry

    Storms blew through White Bear Lake this morning too, small branches down all over and the wind rattled the whole house. Every planter on the deck was overturned, including some that were blocked in between a bench and the house. It was pretty wild and crazy for a while.

  • Terry

    Just got our power back on. Major damage here, many trees snapped in half, branches all over – trees across the power lines on our street. Excel energy guy is convinced there was a tornado as the damage seemed to be isolated to one area of town.

  • Craig

    Often squalls of circulating wind are embedded in fast moving rotating thunderstorm cells. While observing the Doppler mean relative velocity data there was evidence of rotation several thousand feet above the ground.

    Heavy rain can obscure a funnel cloud. Regardless winds were probably on the order of 65 mph.