Mesoscale Discussion 1872, severe thunderstorms possible for Northeastern United States

A Severe Thunderstorm watch is likely across the northeastern United States.

Screen shot 2013-09-11 at 1.22.24 PMAccording to the National Weather Service Storm Prediction Center, the cumulus field is deepening over higher terrain of upstate New York where surface temperatures have warmed into the upper 80s.

Destabilization will continue over the next few hours leading to the potential for severe thunderstorms from Albany, New York northeast to Portland, Maine.

Per the Discussion:

Cu field will likely continue to expand as boundary layer heats over the next few hours. Temperatures downstream across vt/nh are quite warm with readings now approaching 90f…Roughly convective temperature based on early morning soundings. Rapid warming/destabilization is expected across the remainder of nrn new england prior to tstm development.

Over the last hour or so mid level convection has gradually deepened across sern qb along the st. Lawrence valley and lightning is now observed with deeper updrafts roughly 70mi north of the vt border. This activity is moving quickly east in excess of 40kt and should spread into extreme nrn me over the next few hours.

Gradual intensification is likely during the next few hours with the main threats being damaging winds. This area is also under a 5-percent tornado risk.



Author of the article:


Nick Lilja

Nick is former television meteorologist with stints in Amarillo and Hattiesburg. During his time in Hattiesburg, he was also an adjunct professor at the University of Southern Mississippi. He is a graduate of both Oregon State and Syracuse University that now calls Houston home. Now that he is retired from TV, he maintains this blog in his spare time.