Blizzard warning/watch to be issue at 4pm for tomorrow-mon.30-5omph winds,tides 3-6' above normal
Posted by Fred on 12/25/2010, 12:58 pm
12Z NAM GFS AND RGEM MODELS ALL CONTINUE WITHTHE SAME SCENARIO. RAPIDLY DEEPENING INTENSE LOW PRESSURESOUTH OF LONG ISLAND WORKING ITS WAY CLOSE TO BUT SOUTHEAST OFNANTUCKET. INTENSITIES RANGE FROM 965 MB TO 972 MB AT POINT OFCLOSEST APPROACH. PRECIPITATION AMOUNTS SHOULD BE HIGHER THANCURRENTLY FORECAST BUT THE SNOWFALL ACCUMULATION MAP WILL BEUPDATED WITH THE 4 PM AFTERNOON PACKAGE. WE WILL LIKELY BE GOINGTO EITHER A BLIZZARD WATCH OR WARNING FOR PORTIONS OF THE FORECAST AREA


.TIDES/COASTAL FLOODING...
-- Changed Discussion --LATEST GFS STORM SURGE GUIDANCE IS OFF THE CHARTS WITH 3-6 FT
DEPARTURES FOR LATE SUNDAY NIGHT...HIGHEST FOR LONG ISLAND SOUND.
FROM PAST EXPERIENCE THIS LOOKS MUCH TOO HIGH GIVEN EXPECTED
NORTHERLY FLOW...AND DEPARTURES OF 2-3 FT SEEM MORE LIKELY.
THIS COULD RESULT IN WIDESPREAD MINOR TO LOCALLY MODERATE COASTAL
FLOODING AROUND THE TIMES OF HIGH TIDE LATE SUNDAY NIGHT...AND A
COASTAL FLOOD WATCH MAY BECOME NECESSARY FOR SOME SPOTS...IN
PARTICULAR THE SOUTH SHORE BAYS OF WESTERN LONG ISLAND AND
WESTERNMOST LONG ISLAND SOUND. STAY TUNED.-- End Changed Discussion --

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Blizzard warning/watch to be issue at 4pm for tomorrow-mon.30-5omph winds,tides 3-6' above normal - Fred, 12/25/2010, 12:58 pm
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