Saturday, July 3, 2010

*SEVERE THUNDERSTORM WATCH*

Issued at 7:38 PM CDT, Saturday, July 3rd, 2010

...Storm Prediction Center in Norman Oklahoma has issued *Severe Thunderstorm Watch* number 440 for Northwest Minnesota and Eastern North Dakota...

Expiration time: 1:00 AM CDT Sunday Morning.

Threats: Large hail to 2" in diameter. Thunderstorm wind gusts to 70 mph. Dangerous lightning.

Counties in the Duluth area included in this watch:

Koochiching MN.

Cities in the Duluth area included in this watch:

Northome MN...Littlefork MN...International Falls MN...Big Falls MN...And Margie MN...

Latest meso-analysis continues to indicate that there is plenty of instability in place to support the development of thunderstorms across our area early This Evening. The cold front was entering the Eastern Dakotas while a secondary boundary was sinking south toward the Minnesota-Ontario border.

The most robust thunderstorm development thus far has been near that northern boundary with numerous severe thunderstorm and tornado warnings currently in effect across portions of Manitoba and Ontario Province Canada. The cap (warm air aloft) is somewhat weaker the farther north you go, thus explosive thunderstorm development has been ongoing per Canadian radars.

Scattered showers and thunderstorms have been trying to develop over portions of Northcentral and Western Minnesota early This Evening, but a stronger cap in these areas has prevented these storms from taking off...so far.

The threat is certainly there for additional scattered shower and thunderstorm development the rest of Tonight across Northern, Northeast, and Eastcentral Minnesota as well as far Northwest Wisconsin.

Severe thunderstorms are possible along with very heavy rainfall...Refer to the previous blog issued a few hours ago for more details.

Tim