ATL: ANDREA - Post-Tropical

[Riptide]

Finally starting to get windy inside the warm sector. Patches of sun trying to come out, looks like a good setup for severe weather and tornadoes.

[cycloneye]

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

[cycloneye]

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

...ANDREA BECOMES POST-TROPICAL...
...NHC ADVISORIES WILL CONTINUE...


SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...36.1N 77.8W
ABOUT 55 MI...90 KM ENE OF RALEIGH NORTH CAROLINA
ABOUT 100 MI...160 KM WSW OF NORFOLK VIRGINIA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 40 DEGREES AT 28 MPH...44 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.41 INCHES

[HurricaneBelle]

First example of the new post-Sandy protocol for the NHC to continue to issue advisories on post-tropical systems affecting land.

[CrazyC83]

I wonder how long it will be maintained? If it weakens to TD-force (i.e. 30 kt or less), it goes to HPC?

[jlauderdal]

Post tropical andrea pounding SE florida this afternoon with very heavy rain

[Syx6sic]

Been getting winds up to 45 here in Norfolk at my house just only gotten .65 inches of rain

[Bizzles]

Rain/drizzle all day here in Central Jersey, just got heavy about 1/2 hour ago and increasingly down pouring, very little wind. Roads are pretty bad, lots of accidents with standing water.

[Annie Oakley]

Thanks for all the updates/advisories et al!

So glad the beautiful State of Florida didn't fare worse.

[cycloneye]

BULLETIN
POST-TROPICAL CYCLONE ANDREA INTERMEDIATE ADVISORY NUMBER 9A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012013
800 PM EDT FRI JUN 07 2013

...POST-TROPICAL ANDREA MOVING RAPIDLY NEAR THE MID-ATLANTIC
COAST...


SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...37.5N 76.0W
ABOUT 45 MI...70 KM NNE OF NORFOLK VIRGINIA
ABOUT 75 MI...120 KM SW OF OCEAN CITY MARYLAND
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 40 DEGREES AT 35 MPH...55 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.41 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* SURF CITY NORTH CAROLINA TO CAPE CHARLES LIGHT VIRGINIA
* PAMLICO AND ALBEMARLE SOUNDS
* LOWER CHESAPEAKE BAY SOUTH OF NEW POINT COMFORT

GALE CONDITIONS ARE EXPECTED NEAR PORTIONS OF THE U.S. EAST COAST
FROM THE DELMARVA PENINSULA NORTHWARD TO SOUTHERN NEW JERSEY...AS
WELL AS COASTAL RHODE ISLAND AND SOUTHEASTERN MASSACHUSETTS. A
HIGH WIND ADVISORY IS IN EFFECT FOR NANTUCKET MASSACHUSETTS.

FOR ADDITIONAL INFORMATION...INCLUDING OTHER INLAND WATCHES AND
WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICE AT WEATHER.GOV.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 800 PM EDT...0000 UTC...THE CENTER OF POST-TROPICAL CYCLONE
ANDREA WAS LOCATED NEAR LATITUDE 37.5 NORTH...LONGITUDE 76.0 WEST.
ANDREA IS MOVING TOWARD THE NORTHEAST NEAR 35 MPH...55 KM/H...AND
THIS GENERAL MOTION IS EXPECTED THROUGH SATURDAY. A TURN TOWARD THE
EAST-NORTHEAST AND EAST SHOULD OCCUR SATURDAY NIGHT AND SUNDAY. ON
THE FORECAST TRACK...THE CENTER OF ANDREA WILL MOVE NORTHEASTWARD
NEAR THE U.S. EAST COAST THROUGH SATURDAY...AND ACROSS ATLANTIC
CANADA LATE SATURDAY THROUGH SUNDAY.

MAXIMUM SUSTAINED WINDS REMAIN NEAR 45 MPH...75 KM/H...WITH HIGHER
GUSTS...MAINLY OVER THE ATLANTIC WELL TO THE EAST OF THE CENTER.
LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 48 HOURS.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES...370 KM
TO THE EAST OF THE CENTER. A WEATHERFLOW STATION IN THE AVON
SOUND...RECENTLY REPORTED A SUSTAINED WIND OF 40 MPH...64
KM/H...AND A WIND GUST TO 49 MPH...79 KM/H.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 996 MB...29.41 INCHES.


HAZARDS AFFECTING LAND
----------------------
RAINFALL...ANDREA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF
2 TO 4 INCHES FROM CENTRAL NORTH CAROLINA NORTHEASTWARD ALONG THE
EASTERN SEABOARD INTO COASTAL MAINE.

STORM SURGE...LOCALIZED COASTAL FLOODING IS POSSIBLE ALONG PORTIONS
OF THE U.S. EAST COAST FROM NORTH CAROLINA TO NEW ENGLAND. FOR
INFORMATION SPECIFIC TO YOUR AREA...PLEASE SEE PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE.

WIND...TROPICAL STORM CONDITIONS WILL CONTINUE TO SPREAD
NORTHEASTWARD ALONG THE COASTS OF NORTH CAROLINA AND SOUTHEASTERN
VIRGINIA WITHIN THE WARNING AREA THROUGH THIS EVENING. WINDS NEAR
GALE FORCE ARE POSSIBLE ELSEWHERE ALONG THE COAST FROM VIRGINIA TO
ATLANTIC CANADA TONIGHT THROUGH SUNDAY.

TORNADOES...A FEW TORNADOES ARE POSSIBLE OVER NORTHEASTERN NORTH
CAROLINA...SOUTHEASTERN VIRGINIA...AND SOUTHEASTERN MARYLAND.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...1100 PM EDT.

$$
FORECASTER PASCH/CANGIALOSI

[cycloneye]

BULLETIN
POST-TROPICAL CYCLONE ANDREA INTERMEDIATE ADVISORY NUMBER 9A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012013
800 PM EDT FRI JUN 07 2013

...POST-TROPICAL ANDREA MOVING RAPIDLY NEAR THE MID-ATLANTIC
COAST...


SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...37.5N 76.0W
ABOUT 45 MI...70 KM NNE OF NORFOLK VIRGINIA
ABOUT 75 MI...120 KM SW OF OCEAN CITY MARYLAND
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 40 DEGREES AT 35 MPH...55 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.41 INCHES

[angelwing]

Absolutely POURING in Philly!

[Hurricane Alexis]

Post tropical andrea pounding SE florida this afternoon with very heavy rain

I thought the rain was sea breeze driven.

[JonathanBelles]

Interesting area of vorticity off the Yucatan peninsula left behind.

[jlauderdal]

Post tropical andrea pounding SE florida this afternoon with very heavy rain

I thought the rain was sea breeze driven.

Sea breeze+boundry from andrea+ daytime heating+pwat over 2= 10+ inches this afternoon in some areas

[jlauderdal]

Interesting area of vorticity off the Yucatan peninsula left behind.

Andrea left a big wake

[Stephanie]

It POURED almost all day in the Philadelphia area. There's a lot of flood warnings around my area and in my county.n They're predicting 3 - 5 inches of rain in all. We have been a little dry for the year here so that will take care of that. Traffic was a mess. A few thundershowers popped up as well. It's kind of strange to have the first tropical system affect us like this.

[CrazyC83]

I didn't get hit directly by Andrea, but it still feels like she left her presence felt here (as the front got absorbed and the moisture brought up to me). I measured about 2 inches of rain yesterday into this morning before turning to drizzle.

[cycloneye]

BULLETIN
POST-TROPICAL CYCLONE ANDREA ADVISORY NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012013
1100 PM EDT FRI JUN 07 2013

...POST-TROPICAL ANDREA CONTINUES TO MOVE RAPIDLY NEAR THE
MID-ATLANTIC COAST...


SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...38.5N 75.0W
ABOUT 15 MI...25 KM NNE OF OCEAN CITY MARYLAND
ABOUT 30 MI...45 KM S OF CAPE MAY NEW JERSEY
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 45 DEGREES AT 35 MPH...56 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

ALL TROPICAL STORM WARNINGS HAVE BEEN DISCONTINUED.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

GALE CONDITIONS ARE EXPECTED NEAR PORTIONS OF THE NEW JERSEY
COAST...AS WELL AS COASTAL RHODE ISLAND AND SOUTHEASTERN
MASSACHUSETTS. A HIGH WIND ADVISORY IS IN EFFECT FOR NANTUCKET
MASSACHUSETTS.

FOR ADDITIONAL INFORMATION...INCLUDING OTHER INLAND WATCHES AND
WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICE AT WEATHER.GOV.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1100 PM EDT...0300 UTC...THE CENTER OF POST-TROPICAL CYCLONE
ANDREA WAS LOCATED NEAR LATITUDE 38.5 NORTH...LONGITUDE 75.0 WEST.
THE POST-TROPICAL CYCLONE IS MOVING TOWARD THE NORTHEAST NEAR 35 MPH
...56 KM/H....AND THIS GENERAL MOTION IS EXPECTED THROUGH SATURDAY.
A TURN TOWARD THE EAST-NORTHEAST AND EAST SHOULD OCCUR SATURDAY
NIGHT AND SUNDAY. ON THE FORECAST TRACK...THE CENTER OF ANDREA
WILL MOVE NORTHEASTWARD NEAR THE U.S. EAST COAST THROUGH
SATURDAY...AND ACROSS ATLANTIC CANADA LATE SATURDAY THROUGH SUNDAY.

MAXIMUM SUSTAINED WINDS REMAIN NEAR 45 MPH...75 KM/H...WITH HIGHER
GUSTS...MAINLY OVER THE ATLANTIC WELL TO THE EAST AND SOUTHEAST OF
THE CENTER. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT
48 HOURS.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES...370 KM
FROM THE CENTER.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB...29.44 INCHES.


HAZARDS AFFECTING LAND
----------------------
RAINFALL...POST-TROPICAL ANDREA IS EXPECTED TO PRODUCE TOTAL RAIN
ACCUMULATIONS OF 2 TO 4 INCHES FROM THE DELMARVA PENINSULA
NORTHEASTWARD ALONG THE EASTERN SEABOARD INTO COASTAL MAINE.

STORM SURGE...LOCALIZED COASTAL FLOODING IS POSSIBLE ALONG PORTIONS
OF THE U.S. EAST COAST FROM NEW JERSEY TO NEW ENGLAND. FOR
INFORMATION SPECIFIC TO YOUR AREA...PLEASE SEE PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE.

WIND...WINDS TO NEAR GALE FORCE ARE POSSIBLE ALONG PORTIONS OF THE
COAST FROM NEW JERSEY TO ATLANTIC CANADA THROUGH SUNDAY.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 AM EDT.

$$
FORECASTER PASCH


POST-TROPICAL CYCLONE ANDREA DISCUSSION NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012013
1100 PM EDT FRI JUN 07 2013

SURFACE OBSERVATIONS INDICATE THAT THE CIRCULATION IS SOMEWHAT
ELONGATED FROM NORTH-NORTHEAST TO SOUTH-SOUTHWEST AND THIS IS
LIKELY DUE TO THE CYCLONE BEING EMBEDDED WITHIN A FRONTAL ZONE.
HOWEVER OUR BEST CENTER LOCATION ESTIMATES INDICATE THAT THE
FORWARD SPEED HAS INCREASED TO NEAR 30 KT. NOT MUCH ADDITIONAL
ACCELERATION IS LIKELY AND THE POST-TROPICAL CYCLONE SHOULD TURN
EASTWARD IN THE MID-LATITUDE WESTERLIES IN A DAY OR TWO. THE
OFFICIAL FORECAST TRACK IS SIMILAR TO THE PREVIOUS ONE AND IS ALSO
CLOSE TO A CONSENSUS OF THE DYNAMICAL MODELS...WHICH REMAIN IN
FAIRLY GOOD AGREEMENT.

ALTHOUGH THE AVAILABLE WIND OBSERVATIONS ALONG THE COAST HAVE
DROPPED BELOW GALE FORCE...STRONGER WINDS ARE LIKELY STILL
OCCURRING FARTHER OFFSHORE. GIVEN THE 30-KT FORWARD MOTION...
THE INTENSITY OF THE SYSTEM IS PROBABLY STILL CLOSE TO 40 KT.
GLOBAL MODELS SHOW THE CYCLONE BECOMING ABSORBED OR MERGING WITH
ANOTHER EXTRATROPICAL CYCLONE OVER THE NORTH ATLANTIC WITHIN 72
HOURS.

THE THREAT FOR HIGH WINDS...HEAVY RAINFALL...AND LOCALIZED COASTAL
FLOODING WILL CONTINUE SATURDAY ACROSS NEW JERSEY AND NEW ENGLAND.
HAZARDOUS CONDITIONS IN THESE AREAS WILL CONTINUE TO BE
COMMUNICATED THROUGH LOCAL NATIONAL WEATHER SERVICE WARNING
PRODUCTS.

FORECAST POSITIONS AND MAX WINDS

INIT 08/0300Z 38.5N 75.0W 40 KT 45 MPH...POST-TROP/EXTRATROP
12H 08/1200Z 41.7N 70.5W 40 KT 45 MPH...POST-TROP/EXTRATROP
24H 09/0000Z 45.4N 63.2W 40 KT 45 MPH...POST-TROP/EXTRATROP
36H 09/1200Z 46.8N 55.3W 35 KT 40 MPH...POST-TROP/EXTRATROP
48H 10/0000Z 47.0N 47.0W 35 KT 40 MPH...POST-TROP/EXTRATROP
72H 11/0000Z...ABSORBED

$$
FORECASTER PASCH

[cycloneye]

SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...38.5N 75.0W
ABOUT 15 MI...25 KM NNE OF OCEAN CITY MARYLAND
ABOUT 30 MI...45 KM S OF CAPE MAY NEW JERSEY
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 45 DEGREES AT 35 MPH...56 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES