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Feb 9: Iggles flying, weenies high-fivin’: the kickoff to a great stretch


mahk_webstah
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First one in a while:

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
255 AM EST Sat Feb 8 2025

CTZ002>004-MAZ002>021-026-RIZ001>007-082130-
/O.UPG.KBOX.WS.A.0002.250209T0000Z-250209T2100Z/
/O.NEW.KBOX.WS.W.0002.250209T0000Z-250209T1800Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-Eastern
Franklin MA-Northern Worcester MA-Central Middlesex MA-Western
Essex MA-Eastern Essex MA-Western Hampshire MA-Western Hampden MA-
Eastern Hampshire MA-Eastern Hampden MA-Southern Worcester MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-Eastern
Norfolk MA-Northern Bristol MA-Western Plymouth MA-Eastern
Plymouth MA-Southern Bristol MA-Southern Plymouth MA-Northern
Middlesex MA-Northwest Providence RI-Southeast Providence RI-
Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI-Newport
RI-
Including the cities of Smithfield, Northampton, Bristol, Quincy,
Narragansett, Westerly, Foxborough, Taunton, Greenfield, Milford,
Boston, Providence, Putnam, West Warwick, Fitchburg, Orange,
Coventry, Brockton, West Greenwich, Springfield, Fall River,
Norwood, Plymouth, Warwick, Lawrence, Barre, Amherst, East
Greenwich, Windsor Locks, Cambridge, Foster, Hartford,
Willimantic, Ayer, Gloucester, Mattapoisett, Charlemont,
Worcester, New Bedford, Blandford, Newport, Chesterfield,
Framingham, Lowell, Union, and Vernon
255 AM EST Sat Feb 8 2025

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST
SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 4 and
  7 inches.

* WHERE...Portions of northern Connecticut, all of Massachusetts
  east of the Berkshires except for the Cape and islands, and all of
  Rhode Island except for Block Island.

* WHEN...From 7 PM this evening to 1 PM EST Sunday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

 

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WPC discussion sounds great for many. Indeed there will be a lot of high-fiving across this whole region. 1 to 2 in./h, possibly exceeding 2 in./hr

As the parent shortwave continues to track progressively to the
east, the accompanying forcing and moisture will also pivot with
it, and secondary low pressure development is likely off of the NJ
coast late Saturday night into Sunday morning. This low will become
dominant and intensify as zonal but modestly coupled jet structures
interact with a baroclinic zone offshore. As this low deepens and
moves almost due east south of New England, it will cross near the
Benchmark (40N/70W), leading to a substantial snow event for
Upstate NY, the Poconos, and at least Southern New England (SNE),
although there remains uncertainty into how far north (or south)
the heaviest snow will spread. As the low deepens and pulls away to
the east, a renewed surge of cold air both through the
ageostrophic flow into the low and the subsequent CAA in its wake
will limit the progress of the warm nose, while dry air to the
north noted in regional soundings inhibits PWs from aggressively
lifting towards Canada. In between, an axis of heavy snow is likely
as strong WAA produces impressive 850-600mb fgen, producing strong
ascent into the DGZ. The overlap of this strong fgen with some
theta-e lapse rates approaching 0C/km suggests banding potential
from Upstate NY into SNE, and with elevated SLRs, snowfall rates of
1-2"/hr appear likely. Total snowfall will be limited by the speed
of this system as it will only snow in most areas for 12-18 hours,
but this will still result in heavy accumulations. WPC
probabilities for more than 6 inches of snow are high (>70%) from
the Mohawk Valley of NY eastward into much of MA, southern VT,
southern NH, and the southeastern tip of ME. Locally 8-12" of snow
is possible in some areas.

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