[Weather] NWS Boston Update: Weather Concerns for Friday/Saturday

[BOX Operations - NOAA Service Account]

Good Afternoon Everyone,

We're sending a quick update to let you know little has changed from this
morning's briefing. A complete update will be sent later this afternoon,
probably closer to 4 PM.

Here are the key points:

*Track/Strength Uncertainty: High*
It is unknown how the system will develop and where it will eventually
track. This will have a big impact on who sees the heaviest rainfall.

*Flash Flooding:*
This continues to be our main concern from late Friday into Saturday. The
latest information still supports rainfall of 1 to 2 inches on average with
locally higher amounts. Minor urban flooding is expected and there is the
potential for more significant urban and small stream flooding where the
heavier rain falls. Minor rises are expected on the larger rivers but no
flooding is forecast at this time.

*Severe Weather:*

There is the possibility of an isolated tornado Friday night.


*Wind:*

We are less confident in wind impacts due to high uncertainty as to how the
system develops and eventually tracks. It’s quite possible stronger wind
gusts (more than 30-40 mph) remain offshore southeast of Cape Cod and the
Islands or don’t materialize at all. Prevailing direction of any of the
stronger wind gusts should be from the south or southeast.

*Seas:*

We are also less confident in how much seas will build given uncertainty in
the wind forecast. Highest seas approaching 10 feet may affect waters south
and east of Cape Cod and the Islands.

*Coastal Flooding:*

We are highly confident that the threat is low on both coasts as tides are
relatively low through the weekend.

*Rip Currents:*

We have low confidence due to uncertainty in the wind forecast, but there
is the potential for moderate rip currents Friday and Saturday, possibly
into Sunday, mainly at the south coastal beaches.

If you have any questions or would like more information, don't hesitate to
contact us via this email address, on NWSChat <https://nwschat.weather.gov/>,
or by phone at 508.622.3280.

Thanks,
Joe DelliCarpini
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