Jump to content
  • Member Statistics

    17,587
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Tropical Storm Henri


wxeyeNH
 Share

Recommended Posts

Just now, ORH_wxman said:

It's weird to see such a uniform wind pattern like that for a New England TC....so used to seeing the expanding windfield and the best winds well east of the center.

 

image.thumb.png.f82027a53b970f726ef58f1fb9235a6c.png

Yeah I mentioned that too. I don't really see any signs much of ET transition until it really weakens. So weird.

Link to comment
Share on other sites

4 minutes ago, Heat Miser said:

Agreed. I could have bought into that possibility yesterday, but the window is quickly closing on significant intensification.

Category 2 is nothing. Really easily doable... have you guys lived through a category 2? A well-build cabin can withstand those conditions. It's insulting to say that we cannot reach it we are a cane town now just watch.

We lost the snow but we gained the cane. Cancels out...

  • Weenie 6
Link to comment
Share on other sites

Nam has some subtle differences at h250 that might account for the shift east.  Trough interacts with upstream features a tad more and can't go as negative.  Allows for more bagginess offshore.  Granted this is probably overanalysis, but something to keep an eye on when the GFS rolls in.

Link to comment
Share on other sites

599 
WTNT43 KNHC 202042
TCDAT3

Tropical Storm Henri Discussion Number  20
NWS National Hurricane Center Miami FL       AL082021
500 PM EDT Fri Aug 20 2021

Henri appears to be slowly gaining strength.  Deep convection has
been increasing during the past few hours and the upper-level
outflow continues to become better established on the east side of
the circulation.  However, the low-level center is still located
near the northwestern edge of the deep convection due to ongoing
northerly wind shear.  An ASCAT-B pass from a few hours ago showed
peak winds of around 55 kt, with the strongest winds on the
southeast side of the circulation. Based on this data, the initial
intensity is set at 60 kt.  An Air Force Reserve Hurricane Hunter 
aircraft is scheduled to investigate Henri again this evening and 
the data the plane collects will be very helpful in estimating the 
storm's strength and structure.

The tropical storm appears to be making the advertised turn to the
right, with the latest initial motion estimated to be 335/6 kt.  A
trough over the central Appalachians is expected to cut off tonight,
and the combination of that feature and a building ridge to the
east/northeast of Henri should cause the storm to accelerate to the
north on Saturday.  The latest model runs have generally trended to
the left again and are a bit faster, with most showing landfall in
about 48 hours.  Most of the models now show a slight left turn
before landfall as Henri gets caught in the circulation of the
aforementioned trough.  The latest GFS and ECMWF ensemble members
continue to span a region from near New York City to Cape Cod for
the landfall point.  Based on the latest consensus aids, the
official track forecast has again been nudged to the west of the
previous one and shows landfall occurring on Sunday.  After day 3,
Henri is forecast to eject northeastward.

The ongoing northerly shear is expected to decrease tonight, and
the global models show a favorable upper-level wind pattern
developing over the storm through the weekend.  These more 
conducive atmospheric conditions combined with the warm Gulf
Stream waters should allow Henri to strengthen to a hurricane
tonight or early Saturday, with additional intensification expected
into Saturday night.  By early Sunday, however, Henri is forecast to
cross the north wall of the Gulf Stream, and that should end its
opportunity for strengthening. Although steady to rapid weakening is
forecast while Henri moves over cooler waters south of Long
Island and New England, it will likely still be at or very near
hurricane intensity when it reaches the coast. Post-tropical
transition is forecast to occur by day 3 and the system should
dissipate in 4 or 5 days.

Users are reminded to not focus on the exact forecast of the
center of Henri since impacts will extend far from the center.

Key Messages:

1. Dangerous storm surge inundation is expected to begin Sunday in 
portions of Long Island, Connecticut, Rhode Island, and 
southeastern Massachusetts, where a Storm Surge Warning has been 
issued. Dangerous storm surge is possible beginning Sunday in 
western portions of Long Island and Connecticut in the Storm Surge 
Watch area.  Residents in these areas should follow any advice given 
by local officials.

2. Hurricane conditions are expected to begin Sunday in portions
of Long Island and Connecticut, where a Hurricane Warning has been
issued.  Hurricane conditions are possible Sunday across portions 
of Rhode Island and southeastern Massachusetts.

3. Heavy rainfall may lead to considerable flash, urban, and small 
stream flooding, along with the potential for widespread minor and 
isolated moderate river flooding, over portions of Long Island and 
New England Sunday into Monday.

4. Swells from Henri will continue to affect much of the east coast
of the U.S. through the weekend. These swells could cause
life-threatening surf and rip currents.

FORECAST POSITIONS AND MAX WINDS

INIT  20/2100Z 31.2N  73.9W   60 KT  70 MPH
 12H  21/0600Z 32.8N  73.3W   65 KT  75 MPH
 24H  21/1800Z 35.8N  72.3W   75 KT  85 MPH
 36H  22/0600Z 38.9N  71.9W   75 KT  85 MPH
 48H  22/1800Z 40.8N  72.4W   65 KT  75 MPH
 60H  23/0600Z 42.0N  72.8W   45 KT  50 MPH...INLAND
 72H  23/1800Z 42.9N  72.6W   30 KT  35 MPH...POST-TROPICAL
 96H  24/1800Z 43.8N  68.9W   25 KT  30 MPH...POST-TROPICAL
120H  25/1800Z...DISSIPATED

$$
Forecaster Cangialosi

 

  • Like 2
Link to comment
Share on other sites

4 minutes ago, CoastalWx said:

Well they have to for a large viewership. 

Yeah they have viewers in E CT and RI....even if SE MA is unlikely to get hit hard, those other areas definitely could. Can't really rule our areas near EWB getting it good yet either....if this tickles east then they are back in the game.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...