Severe Thumderstorm Watch

SEL7

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 417
NWS STORM PREDICTION CENTER NORMAN OK
145 PM EDT FRI JUN 22 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CONNECTICUT
WESTERN MASSACHUSETTS
CENTRAL AND NORTHERN NEW JERSEY
SOUTHEASTERN NEW YORK AND LONG ISLAND
SOUTH-CENTRAL AND EASTERN PENNSYLVANIA
COASTAL WATERS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 900
PM EDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHEAST OF
HARRISBURG PENNSYLVANIA TO 35 MILES NORTHWEST OF PITTSFIELD
MASSACHUSETTS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...TSTMS INCREASING IN COVERAGE/INTENSITY ALONG/AHEAD OF
SFC COLD FRONT OVER CENTRAL PA ARE EXPECTED TO OFFER PRIMARY RISK OF
DAMAGING GUSTS...WITH ISOLATED LARGE HAIL ALSO POSSIBLE. ACTIVITY
WILL MOVE INTO ENVIRONMENT CHARACTERIZED BY WELL-MIXED BOUNDARY
LAYERS...MUCAPE UP TO AROUND 2500 J/KG AND 25-35 KT EFFECTIVE SHEAR
MAGNITUDES...IN SUPPORT OF PRIMARY MULTICELLULAR MODE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 26030.


...EDWARDS

Quick Storm- CNJ

moving into the CNJ area. Storm is moving rather quickly, but could have some dangerous lightening, winds and heavy downpours.

TORNADO WARNING

Northern Philadelphia moving towards Jenkintown! C7

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
903 PM EDT FRI JUN 1 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...

* UNTIL 930 PM EDT

* AT 901 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
JENKINTOWN...OR NEAR PHILADELPHIA...MOVING NORTH AT 30 MPH.

* THE TORNADO WILL BE NEAR...
WILLOW GROVE...ABINGTON AND BRYN ATHYN BY 910 PM EDT...
HATBORO BY 915 PM EDT...
IVYLAND BY 920 PM EDT...
RICHBORO BY 925 PM EDT...
DOYLESTOWN...6 MILES SOUTHEAST OF ROBESONIA...7 MILES SOUTH OF
GARDENVILLE AND 9 MILES SOUTHWEST OF NEW HOPE BY 930 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4010 7506 4008 7508 4005 7510 4006 7514
4008 7517 4007 7519 4008 7521 4041 7521
4038 7495 4033 7493
TIME...MOT...LOC 0103Z 190DEG 25KT 4009 7513 

Tornado Watch Further North, To Camden County

SPC's latest watches extend the latest tornado watches further north, to Camden County in NJ. This includes Philadelphia Metro until 2am. Most areas in PA are also covered by a tornado watch as well (exception far NE PA).

There is also a Severe Thunderstorm Warning which stretches from N PA to S PA through state college as one of the intense lines pushes east

A Flash Flood Watch is in effect for the remainder of NJ through 8am tomorrow (exceptions are the coastal areas.

Tornado Watch May Be Extended Further North

The latest Mesoscale Discussion from the Storm Prediction Center leads me to believe that a tornado watch may soon be extended north into Central NJ, around Trenton. This would also include the Philadelphia area. SPC is hedging their bets that the warm front currently located south of the area moves north. We shall see:


MESOSCALE DISCUSSION 1010
NWS STORM PREDICTION CENTER NORMAN OK
0325 PM CDT FRI JUN 01 2012

AREAS AFFECTED...SERN PA...SRN NJ...DE

CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY

VALID 012025Z - 012130Z

PROBABILITY OF WATCH ISSUANCE...80 PERCENT

SUMMARY...TORNADO THREAT WILL INCREASE ACROSS SERN PA...DE...AND SRN
NJ OVER THE NEXT FEW HOURS.

DISCUSSION...WARM FRONT IS EXPECTED TO ADVANCE SLOWLY NWD ACROSS DE
INTO SERN PA AND SRN NJ. THIS NWD SHIFT WILL ALLOW ONGOING
SUPERCELL ACTIVITY UPSTREAM OVER MD TO SPREAD INTO THE REGION AS
HIGHER THETA-E AIR REPLACES COOLER ELY LOW LEVEL FLOW. SOMEWHAT
STRONGER LOW LEVEL SHEAR ALONG THE WARM FRONT SUGGESTS TORNADO
THREAT MAY BE ENHANCED AS THIS BOUNDARY LIFTS NWD.

..DARROW/CARBIN.. 06/01/2012


ATTN...WFO...PHI...CTP...

LAT...LON 40627561 39667418 38617424 38517560 39767598 40457635
40627561

Severe Thuderstorms South, Rains North

A potentially dangerous situation is setting up for the southern Mid
Atlantic states this evening and tonight. There Will be multiple lines
of storms that move through, all associated with a frontal boundary
located over West Virginia and Western PA. Areas in Virginia up
through DC/Baltimore and into south central PA will likely see
multiple tornadoes develop. Areas further north and east will
primarily see heavy rains as our air mass is much more stable compared
to the southern Mod Atlantic states. A moderate risk of tornadoes
(30%) exists for areas of Virginia up to DC! A flash flood watch has
been issued further north into Jersey. Expect multiple bands of storms
south / heavy rains north to move through.