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-By Jeb Postle
-A source of weather for all of New England and Eastern New York.
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Tuesday, July 26, 2011

Sever Weather update/ Sun has arrived



Good Afternoon Everyone
The Storm Prediction Center has issued a Severe Thunderstorm Watch for all of Eastern NY,  Litchfield County Connecticut,  Berkshire County Massachusetts,  All of Vermont, and Northern New Hampshire.

-Watch is in effect until 7 p.m for Eastern New York, Berkshire County MA, Litchfield County CT,  All of Vermont,  and Northern New Hampshire.  Conditions are favorable for storms to develop.

Currently,  There are breaks of Sun present across Eastern New York, and now New England. This will begin the process of destabilizing the atmosphere for storm development.  On radar, there are scattered Showers and storms across upstate NY. There is even a possible storm with tornado rotation detected by doppler radar near Utica NY.  The surface cape values are starting to rise steadily. There are values currently between 500 J/Kg to 1500 J/kg across Eastern NY and much of New England.  Cape represents the amount of potential energy in the atmosphere. The Lifting Index is currently very low across Eastern New York, and Western New England. There are values as low as -6 around Albany, NY. The lifted Index is the difference in temperature between the temperature of the environment and a parcel of air in the atmosphere.  The Wind shear is currently between 40 to 50 m/s across parts of Eastern NY.  The shear needs to be higher for a better chance of severe storms. Wind Shear is a difference of wind speed via altitude.

 The Cape Values and Lifted Index values currently observed across parts of the region are a good start for  storm development. If the wind shear picks up, Storms are a good bet across the region.

Currently, the greatest chance of storms forming is in Eastern NY and  parts of Western New England.  The main threats will be damaging winds,  hail, heavy rainfall, and an isolated threat of tornadoes. The storm threat will last through this  afternoon and evening.  Storm threat will increase later this afternoon and evening for the remainder of New England as long as the following factors are present.

If you hear thunder or see storm clouds, prepare to take shelter.

-SPC
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1 comment:

  1. Alex AvalosJuly 26, 2011 at 1:32 PM

    Great post Jeb! Watching this line closely. Moving fast and instability is really good for most this early on. Should be fun to watch, especially for those west of I-495. Happy storm watching!

    Keep up the great work with your blog.

    -Alex

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