Tornado Watch -Washington County

[ture....@dot.gov]

A Tornado Watch has been issued until 8:00 pm for all of Vermont except the southern counties. 

At this point storms are in extreme NW Vermont. 

We will be watching the situation and updating as necessary.

Ture

Deputy Incident Commander-Logistics

URGENT - IMMEDIATE BROADCAST REQUESTED

   TORNADO WATCH NUMBER 380

   NWS STORM PREDICTION CENTER NORMAN OK

   1230 PM EDT THU MAY 26 2011

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   TORNADO WATCH FOR PORTIONS OF 

          NORTHEAST NEW YORK

          NORTHERN AND CENTRAL VERMONT

   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL

   800 PM EDT.

   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

   AREAS.

   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

   MILES EAST AND WEST OF A LINE FROM 25 MILES WEST NORTHWEST OF

   NEWPORT VERMONT TO 50 MILES SOUTH SOUTHWEST OF BURLINGTON

   VERMONT.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

   TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

   AND POSSIBLE WARNINGS.

   OTHER WATCH INFORMATION...CONTINUE...WW 379...

   DISCUSSION...A SUPERCELL HAS ALREADY EVOLVED EARLY THIS AFTERNOON

   OVER NERN NY WITHIN AN KINEMATIC ENVIRONMENT CHARACTERIZED BY 50-55

   KT OF EFFECTIVE BULK SHEAR AND 0-1 KM SRH APPROACHING 200 M2/S2 /PER

   BURLINGTON VWP/.  INFLOW AIR MASS SHOULD CONTINUE TO

   WARM/DESTABILIZE OVER THE NEXT SEVERAL HOURS...SUPPORTING MLCAPE

   VALUES OF 1000-2000 J/KG.  THIS COMBINATION OF INSTABILITY AND

   VERTICAL SHEAR IS RESULTING IN AN ENVIRONMENT QUITE FAVORABLE FOR

   SUPERCELLS CAPABLE OF LARGE HAIL...DAMAGING WINDS AND TORNADOES.

   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

   500. MEAN STORM MOTION VECTOR 24035.