NHC broadens Hurricane/ Tropical storm watch and warnings

[hurricanedude]

The National Weather Service announced today that, starting June 1, the definitions of hurricane and tropical storm watches and warnings will be broadened.
The new changes will allow watches and warnings to be issued or remain in effect after a tropical cyclone becomes post-tropical, when such a storm poses a significant threat to life and property.
In addition, the National Hurricane Center will be permitted to issue advisories during the post-tropical stage.
The policy changes were motivated by the special challenges posed by Hurricane Sandy, which was forecast to evolve from a hurricane to a post-tropical cyclone prior to reaching the New Jersey coast.
The NHC did not issue hurricane advisories north of North Carolina due to the nature of the changing storm.
Fearing a public misunderstanding of the severity of Sandy's impacts, AccuWeather CEO Barry Myers urged the NHC to reverse the decision before Sandy made landfall.
RELATED:
Post Sandy: Is the Jersey Coast More Vulnerable?
WATCH: The Road to Recovery After Superstorm Sandy
Sandy-Ravaged Businesses Prepare for Tourism; Residents Fear Public Confusion
Timeline of Sandy, Controversy Surrounding the Storm
The NHC believes that the policy changes will prevent a similar situation in the future.
"Our forecasters now have more flexibility to effectively communicate the threat posed by transitioning tropical systems," Louis W. Uccellini, Ph.D., director of NOAA's National Weather Service said.
"Sandy's forecast was remarkably accurate and under a similar situation in the future, forecasters will be able to choose the best option to underscore the urgency involved."
This policy change was first proposed during the NOAA Hurricane Meeting in November and has since been the focus of much discussion in the meteorological and emergency management communities, in forums such as the American Meteorological Society Annual Meeting in January and the National Hurricane Conference in March.
This change is also supported by preliminary findings from NOAA's service assessment on Sandy, which will be released in May.
"I would like to thank everyone for their open and candid feedback on this proposal," Rick Knabb, Ph.D., director of NOAA's National Hurricane Center said.
"Keeping communities safe when a storm threatens is truly a team effort and this change reflects that collaboration."
Weather News >

[hurricanedude]

That means the Canadian Maritines, Nova Scotia, Newfoundland and such will now have many hurricane warnings..as most recurved storms have some effect on those land masses

[cycloneye]

Here is the link to this by NHC. Below is an example looking well into the future.

http://www.nhc.noaa.gov/news/20130404_h ... hanges.php

BULLETIN
POST-TROPICAL CYCLONE MANDY ADVISORY NUMBER 29
NWS NATIONAL HURRICANE CENTER MIAMI FL AL182020
1100 AM EDT MON OCT 29 2020

...MANDY LOSES TROPICAL CHARACTERISTICS BUT HURRICANE WARNINGS
REMAIN IN EFFECT...
...MANDY EXPECTED TO BRING LIFE-THREATENING STORM SURGE AND
HURRICANE-FORCE WINDS TO THE COAST THIS AFTERNOON...


SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...37.5N 71.5W
ABOUT 205 MI...330 KM SE OF ATLANTIC CITY NEW JERSEY
ABOUT 260 MI...415 KM SSE OF NEW YORK CITY
MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES


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

THE BERMUDA WEATHER SERVICE HAS DISCONTINUED THE TROPICAL STORM
WARNING FOR BERMUDA.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* NORTH OF CHINCOTEAGUE VIRGINIA TO CHATHAM MASSACHUSETTS
* THE TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT
* THE MIDDLE AND UPPER CHESAPEAKE BAY AND DELAWARE BAY

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* NORTH OF SURF CITY NORTH CAROLINA TO CHINCOTEAGUE
* PAMLICO AND ALBEMARLE SOUNDS
* NORTH OF CHATHAM TO MERRIMACK RIVER MASSACHUSETTS
* THE LOWER CHESAPEAKE BAY

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING INLAND
WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR
LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
SATELLITE AND RECONNAISSANCE DATA INDICATE THAT THE CIRCULATION OF
MANDY HAS BECOME OVERTAKEN BY A COLD FRONT DURING THE PAST FEW
HOURS...AND AS A RESULT MANDY CAN NO LONGER BE CLASSIFIED AS A
TROPICAL CYCLONE. HOWEVER...TO AVOID AN UNACCEPTABLE DISCONTINUITY
IN SERVICE...THE NATIONAL HURRICANE CENTER WILL CONTINUE TO ISSUE
ADVISORIES ON MANDY AS A POST-TROPICAL CYCLONE AS LONG AS THE SYSTEM
POSES A SIGNIFICANT THREAT TO LIFE AND PROPERTY. IN ADDITION...THE
COASTAL HURRICANE AND TROPICAL STORM WARNINGS WILL REMAIN IN EFFECT.

AT 1100 AM EDT...1500 UTC...THE CENTER OF POST-TROPICAL CYCLONE MANDY
WAS LOCATED NEAR LATITUDE 37.5 NORTH...LONGITUDE 71.5 WEST. MANDY IS
MOVING TOWARD THE NORTH-NORTHWEST NEAR 18 MPH...30 KM/H. A TURN
TOWARD THE NORTHWEST IS EXPECTED SOON...FOLLOWED BY A TURN TOWARD
THE WEST-NORTHWEST TONIGHT. ON THE FORECAST TRACK... THE CENTER OF
MANDY IS EXPECTED TO MAKE LANDFALL ALONG OR JUST SOUTH OF THE
SOUTHERN NEW JERSEY COAST THIS EVENING OR TONIGHT.

REPORTS FROM AN AIR FORCE HURRICANE HUNTER AIRCRAFT INDICATE THAT
THE MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 90 MPH...150
KM/H...WITH HIGHER GUSTS. ALTHOUGH MANDY HAS BECOME A FRONTAL OR
WINTERTIME LOW PRESSURE SYSTEM...THIS TRANSITION WILL NOT BE
ACCOMPANIED BY A WEAKENING OF THE SYSTEM. IN FACT...A LITTLE
STRENGTHENING IS POSSIBLE DURING THIS PROCESS. MANDY IS EXPECTED
TO WEAKEN AFTER MOVING INLAND.

HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM...
MAINLY SOUTHWEST OF THE CENTER...AND TROPICAL-STORM-FORCE WINDS
EXTEND OUTWARD UP TO 485 MILES...780 KM. SUSTAINED WINDS TO
TROPICAL STORM FORCE ARE OCCURRING FROM LONG ISLAND SOUTHWARD ALONG
THE COASTS OF NEW JERSEY...DELAWARE...AND EASTERN VIRGINIA...AND
EXTEND AS FAR INLAND AS THE CENTRAL AND SOUTHERN CHESAPEAKE BAY AND
DELAWARE BAY. A WEATHERFLOW REPORT INDICATES A SUSTAINED WIND OF 53
MPH...85 KM/H...WITH A GUST TO 63 MPH...102 KM/H...HAS RECENTLY
OCCURRED ON LONG ISLAND AT EATONS NECK NEW YORK.

THE ESTIMATED MINIMUM CENTRAL PRESSURE RECENTLY REPORTED BY
RECONNAISSANCE AIRCRAFT WAS 943 MB...27.85 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL-STORM-FORCE WINDS ARE ALREADY OCCURRING OVER
PORTIONS OF THE MID-ATLANTIC STATES FROM NORTH CAROLINA
NORTHWARD TO LONG ISLAND. TROPICAL-STORM-FORCE WINDS ARE EXPECTED
TO CONTINUE TO SPREAD OVER OTHER PORTIONS OF THE MID-ATLANTIC
COAST...NEW YORK CITY...AND SOUTHERN NEW ENGLAND TODAY.
HURRICANE-FORCE WINDS COULD REACH THE MID-ATLANTIC
STATES...INCLUDING NEW YORK CITY AND LONG ISLAND...BY THIS EVENING.
WINDS AFFECTING THE UPPER FLOORS OF HIGH-RISE BUILDINGS WILL BE
SIGNIFICANTLY STRONGER THAN THOSE NEAR GROUND LEVEL.

STORM SURGE...THE COMBINATION OF AN EXTREMELY DANGEROUS STORM SURGE
AND THE TIDE WILL CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE
FLOODED BY RISING WATERS. THE WATER COULD REACH THE FOLLOWING
DEPTHS ABOVE GROUND IF THE PEAK SURGE OCCURS AT THE TIME OF HIGH
TIDE...

NC NORTH OF SURF CITY INCLUDING PAMLICO/ALBEMARLE SOUNDS...4 TO 6 FT
SE VA AND DELMARVA INCLUDING LOWER CHESAPEAKE BAY...2 TO 4 FT
UPPER AND MIDDLE CHESAPEAKE BAY...1 TO 3 FT
LONG ISLAND SOUND...RARITAN BAY...AND NEW YORK HARBOR...6 TO 11 FT
ELSEWHERE FROM OCEAN CITY MD TO THE CT/RI BORDER...4 TO 8 FT
CT/RI BORDER TO THE SOUTH SHORE OF CAPE COD INCLUDING BUZZARDS
BAY AND NARRAGANSETT BAY...3 TO 6 FT
CAPE COD TO THE MA/NH BORDER INCLUDING CAPE COD BAY...2 TO 4 FT
MA/NH BORDER TO THE U.S./CANADA BORDER...1 TO 3 FT

SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE TIMING OF THE SURGE
AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT DISTANCES.
GIVEN THE LARGE WIND FIELD ASSOCIATED WITH MANDY...ELEVATED WATER
LEVELS COULD SPAN MULTIPLE TIDE CYCLES RESULTING IN REPEATED AND
EXTENDED PERIODS OF COASTAL AND BAYSIDE FLOODING. IN ADDITION...
ELEVATED WATERS COULD OCCUR FAR REMOVED FROM THE CENTER OF MANDY.
THE TRANSITION OF MANDY TO A POST-TROPICAL CYCLONE WILL NOT IN ANY
WAY LESSEN THESE IMPACTS. FOR INFORMATION SPECIFIC TO YOUR
AREA...PLEASE SEE PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE.

RAINFALL...RAINFALL TOTALS OF 3 TO 6 INCHES ARE EXPECTED OVER FAR
NORTHEASTERN NORTH CAROLINA WITH ISOLATED MAXIMUM TOTALS OF 8
INCHES POSSIBLE. RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE EXPECTED
OVER PORTIONS OF THE MID ATLANTIC STATES...INCLUDING THE DELMARVA
PENINSULA...WITH ISOLATED MAXIMUM AMOUNTS OF 12 INCHES POSSIBLE.
RAINFALL AMOUNTS OF 1 TO 3 INCHES WITH ISOLATED MAXIMUM AMOUNTS OF
5 INCHES ARE POSSIBLE FROM THE SOUTHERN TIER OF NEW YORK STATE
NORTHEASTWARD THROUGH NEW ENGLAND.

SNOWFALL..SNOW ACCUMULATIONS OF 2 TO 3 FEET ARE EXPECTED IN THE
MOUNTAINS OF WEST VIRGINIA WITH LOCALLY HIGHER TOTALS TODAY THROUGH
WEDNESDAY. SNOWFALL OF 1 TO 2 FEET IS EXPECTED IN THE MOUNTAINS OF
SOUTHWESTERN VIRGINIA TO THE KENTUCKY BORDER...WITH 12 TO 18 INCHES
OF SNOW EXPECTED IN THE MOUNTAINS NEAR THE NORTH CAROLINA/TENNESSEE
BORDER AND IN THE MOUNTAINS OF WESTERN MARYLAND.

SURF...DANGEROUS SURF CONDITIONS WILL CONTINUE FROM FLORIDA THROUGH
NEW ENGLAND FOR THE NEXT COUPLE OF DAYS.


NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...200 PM EDT.
NEXT COMPLETE ADVISORY...500 PM EDT.

$$
FORECASTER STEWART

[CrazyC83]

That means the Canadian Maritines, Nova Scotia, Newfoundland and such will now have many hurricane warnings..as most recurved storms have some effect on those land masses

The NHC doesn't issue hurricane warnings for those areas anyway though, but Environment Canada has been issuing such warnings in close-call cases anyway.