Tropical Storm Andrea Update Four

000

WTNT41 KNHC 072051
TCDAT1

POST-TROPICAL CYCLONE ANDREA DISCUSSION NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012013
500 PM EDT FRI JUN 07 2013

SURFACE OBSERVATIONS AND DOPPLER RADAR DATA INDICATE THAT ANDREA IS
NO LONGER TROPICAL. DEEP CONVECTION OVER NORTH CAROLINA
APPEARS TO BE ASSOCIATED MORE WITH A FRONTAL ZONE THAN THE
CYCLONE ITSELF...AND THE LOW-LEVEL CENTER HAS BEGUN TO LOSE
DEFINITION. HOWEVER...EVEN THOUGH THE CYCLONE IS BEING DECLARED
POST-TROPICAL...ADVISORIES FROM NHC WILL CONTINUE UNTIL THE SYSTEM
NO LONGER POSES A SIGNIFICANT THREAT TO THE U.S. EAST COAST.

THE INITIAL INTENSITY REMAINS 40 KT...WHICH IS SUPPORTED BY A
PARTIAL ASCAT PASS FROM 1448 UTC. TROPICAL STORM CONDITIONS ARE
PRIMARILY CONFINED TO THE ATLANTIC WATERS AND COASTAL AREAS OF
NORTH CAROLINA AND EXTREME SOUTHEASTERN VIRGINIA. THE INTENSITY
GUIDANCE CONTINUES TO SHOW ANDREA CHANGING LITTLE IN STRENGTH AS IT
MOVES UP THE U.S. EAST COAST...AND THE OFFICIAL INTENSITY FORECAST
IS UNCHANGED FROM THE PREVIOUS ONE. GLOBAL MODEL GUIDANCE IS
SHOWING ANDREA BEING STRETCHED OVER THE NORTH ATLANTIC IN 24-48
HOURS...WITH A SECOND LOW PRESSURE SYSTEM BECOMING THE MORE
DOMINANT SYSTEM AND ABSORBING ANDREA BY 72 HOURS EAST OF
NEWFOUNDLAND.

THE INITIAL MOTION IS 040/24 KT. ANDREA WILL CONTINUE TO ACCELERATE
NORTHEASTWARD DURING THE NEXT 24 HOURS WHILE IT BECOMES INCREASINGLY
EMBEDDED IN STRONG MID-LATITUDE FLOW. THE SPREAD AMONG THE TRACK
GUIDANCE REMAINS RELATIVELY SMALL...AND THE UPDATED NHC TRACK
FORECAST IS VERY SIMILAR TO THE PREVIOUS ONE.

IT SHOULD BE STRESSED THAT EVEN THOUGH ANDREA HAS BECOME
POST-TROPICAL...THE THREAT FOR HIGH WINDS...HEAVY RAINFALL...AND
LOCALIZED COASTAL FLOODING WILL CONTINUE THROUGH SATURDAY ACROSS
THE MID-ATLANTIC STATES AND NEW ENGLAND. HAZARDOUS CONDITIONS FROM
THE DELMARVA PENINSULA NORTHWARD TO NEW ENGLAND WILL CONTINUE TO BE
COMMUNICATED THROUGH LOCAL NATIONAL WEATHER SERVICE WARNING
PRODUCTS.

FORECAST POSITIONS AND MAX WINDS

INIT 07/2100Z 36.1N 77.8W 40 KT 45 MPH...POST-TROP/EXTRATROP
12H 08/0600Z 39.3N 74.1W 40 KT 45 MPH...POST-TROP/EXTRATROP
24H 08/1800Z 43.4N 67.6W 40 KT 45 MPH...POST-TROP/EXTRATROP
36H 09/0600Z 46.0N 60.0W 35 KT 40 MPH...POST-TROP/EXTRATROP
48H 09/1800Z 46.9N 51.5W 35 KT 40 MPH...POST-TROP/EXTRATROP
72H 10/1800Z...ABSORBED BY ANOTHER LOW

$$
FORECASTER BERG/BEVEN

Queens County P.E.I.

3:52 PM ADT Friday 07 June 2013

Rainfall warning for

Queens County P.E.I. issued

Remnants of Andrea to bring heavy rain to Prince Edward Island this weekend.

This is a warning that significant rainfall is expected or occurring in these regions. Monitor weather conditions..listen for updated statements.

Tropical storm Andrea, currently located over North Carolina, will become post-tropical tonight and approach the Maritimes this weekend. This system is expected to bring significant rainfall to Prince Edward Island beginning early Saturday morning and continuing throughout most of the day. Rain will be heavy at times and general rainfall amounts of up to 50 millimetres are expected however it is certainly possible that some areas could receive locally higher amounts.

The rain will be accompanied by strong winds on Saturday especially for regions along the Atlantic coast and in Inverness County where Les Suetes winds gusting up to 100 km/hour will develop Saturday afternoon. The Les Suetes winds will end early Saturday evening.

Halifax County - east of Porters Lake

3:52 PM ADT Friday 07 June 2013

Rainfall warning for

Halifax County - east of Porters Lake issued

Remnants of Andrea to bring heavy rain to Nova Scotia this weekend.

This is a warning that significant rainfall is expectedin these regions. Monitor weather conditions..listen for updated statements.

Tropical storm Andrea, currently located over North Carolina, will become post-tropical tonight and approach the Maritimes this weekend. This system is expected to bring significant rainfall to Nova Scotia beginning late this evening in the west, spreading eastward Saturday and continuing throughout most of the day. Rain will be heavy at times and general rainfall amounts of 40 to 60 millimetres are expected however it is certainly possible that some areas could receive locally higher amounts.

The rain will be accompanied by strong winds on Saturday especially for regions along the Atlantic coast and in Inverness County where Les Suetes winds gusting up to 100 km/hour will develop Saturday afternoon. The Les Suetes winds will end early Saturday evening.

St. Stephen and Northern Charlotte County

3:42 PM ADT Friday 07 June 2013

Rainfall warning for

St. Stephen and Northern Charlotte County issued

Significant rainfall expected for these regions.

This is a warning that significant rainfall is expected or occurring in these regions. Monitor weather conditions..listen for updated statements.

Tropical storm Andrea, currently located over North Carolina, will become post-tropical and then approach the Maritimes tonight. Up to 50 millimetres can be expected over southwestern and southcentral New Brunswick. Rain is expected to begin overnight tonight and taper to showers Saturday afternoon. Winds gusts of up to 70 km/h can also be expected with this storm. The remainder of New Brunswick will also receive a significant amount of rain but currently not expected to reach rainfall warning criteria.