July 11, 2009

Severe Thunderstorms & Isolated Tornadoes Possible Into Tonight


National Weather Service Storm Prediction Center Special Mesoscale Discussion (Click HERE To View Details!)


Champlain Valley Weather Discussion:
     Currently, things are quieting down across the region other than some light to moderate rain across Vermont, mainly east of the Champlain Valley. Things may become interesting overnight as the atmosphere remains unstable. The threat for severe weather overnight, is a rare occurrence across the Northeast United States, as we don't have enough sub-tropical or tropical moisture to make up for the daytime heating, that produces our primary instability. With that in mind, the Storm Prediction Center, has issued a Mesoscale discussion stating that the possibility for continued severe thunderstorms will be possible overnight, and to make it even more rare, the possibility of isolated tornadoes. The Greatest threat for continued severe weather will be across Northern New York, Western, and Central New York, south into Pennsylvania. This situation will be monitored closely, and if a Severe Weather Watch is issued for our area I will post that immediately.

     National Weather Service Doppler Radar is currently indicating storms developing along the St. Lawrence River Valley, and further South, and West into Ontario, Canada, and Buffalo, New York. One area of showers and thunderstorms that will be concern to our area, are a line of storms currently just west of St. Lawrence County, in Canada right now. Doppler radar is indicating that this line of thunderstorms has the potential to produce penny to nickel size hail. This storm is approximately 30 miles West of Potsdam, New York. No Severe Thunderstorm Warning has been issued yet, but that may change soon. This area of storms will be watched closely as they progress across Northern New York, and possibly into Western Vermont. Stay tuned for possible further updates.

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