6-18-12_Excelsior-MN_Mammatus-Clouds-CBMAM_Todd-Nelson
Severe Recap, Wildfire Update, and possible Cyclone Formation in Northwest Atlantic Jun 18, 2012

Monday, June 18th, 2012

After a stormy night, lingering showers and thunderstorms across the Twin Cities produced this neat sight… Mammatus clouds, which indicate unsettled weather and possibly thunderstorms nearby.

Storm Reports From Sunday

These are the hail, high wind and tornado reports from Sunday… note the red dots near the South Dakota/Minnesota boarder… those are tornado reports! As thunderstorms merged into a line, they produced more wind damage into central Minnesota and near the Twin Cities.

Storm Damage in Ortonville, MN

Thanks to the National Weather Service out of Aberdeen, SD for sharing this picture from The Ortonville Independent

“Ortonville hit by storm. Main St (2nd) is a mess.

Rotating Wall Cloud

This picture is from Andy Mair, who was watching a rotating thunderstorm that produced a funnel cloud near Benson, MN

Heavy Rain

These thunderstorms produced some heavy rain! Radar estimates of rain from Sunday night’s early Monday morning’s event show nearly 2″ to 4″ swath from western Minnesota into west central Wisconsin.

Thanks to WeatherNation meteorologist Bryan Karrick for the picture below of his rain gauge… Bryan picked up nearly 3.5″ of rain and said his sump pump is getting a good workout.

Severe Threat Today

The Storm Prediction Center has highlighted areas across the Upper Mississippi Valley and the Great Lakes Region for a chance at strong to severe storms later today. Hail and high winds look to be the primary threat along with more heavy rain, but an isolated tornado can’t be ruled out near northeastern Wisconsin.

Severe Threat Tomorrow

The last full day of Spring 2012 will be comprised of another thundery outbreak across the far north. Hail and high winds looks to be the main threat along with more heavy rain.

HPC Rainfall Forecast

Look at the heavier rain forecast across the far north… the potential for another 2″ to 4″ or more is possible through the end of the week.

Extreme Heat

Most of this rain and thunder activity is/will be developing on the out edge of the extreme heat and humidity that is bubbling up through the central part of the country. Look at the 500mb vorticity map from across the nation by the early part of next week allowing more heat to settle into the central part of the country.

Winds Fuel Colorado Wildfire 

Wildfires continue out west. Hot, dry and windy conditions aren’t helping the situation.

Crews face powerful winds as they battle a Wildfire in Colorado that has burned about 86 square miles of mountainous forest land.  181 homes have been destroyed, the most in state history. Photo courtesy: David Zalubowski / AP

This photo shows the fire erupting  on a ridge over a Boy Scouts camp east of Red Feather Lakes, Colo., on Sunday, June 17, 2012.

Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2012/06/18/state/n012527D12.DTL#ixzz1y9lmsH6V

Watching the Tropics

Chance of Tropical Cyclone Formation in the Northwest Atlantic

A well-defined non-tropical area of low pressure located about 300 miles northeast of Bermuda is producing gale-force winds and scattered showers and thunderstorms. This system could gradually acquire subtropical cyclone characteristics as it moves northeastward at around 10 mph over the next couple of days. This system has a medium chance, 30%, of becoming a subtropical or tropical cyclone during the next 48 hours. This image was taken by GOES East at 1415Z on June 18, 2012.

See more from the National Hurricane Center HERE:

Storm Names

If this thing develops into a tropical storm, then it’s name will be Chris… the third name on the Atlantic name list for 2012. Interested in seeing if your name is on the list of potential upcoming tropical storms or hurricanes in the future? See the list below from the NHC and find out more about the naming convention HERE:

Alrighty, thanks for checking in on this Monday, have a great rest of your week!

Don’t forget to follow me on Twitter @TNelsonWNTV

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