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Storm threat 2/22-2/25


IsentropicLift

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My Holly NWS afternoon AFD nuggets.

 

 

.LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
SUNDAY THROUGH SUNDAY NIGHT...DESPITE A WEAK COLD FRONT LATE
SATURDAY NIGHT, ONE MORE WARM DAY IS EXPECTED ON SUNDAY WITH HIGHS
MOSTLY IN THE 50S ACROSS THE REGION (WITH THE EXCEPTION OF THE
POCONOS AND NW NJ WHICH MAY STAY IN THE 40S). A WEAK SURFACE LOW
WILL PASS OVER THE SOUTHERN AND SOUTHEASTERN PORTIONS OF OUR REGION.
GFS APPEARS TO BE A DRY OUTLIER WITH THIS SYSTEM AS IT ONLY DEPICTS
PRECIP OVER DELMARVA AND SOUTHERN NJ. THUS HAVE FAVORED THE ECMWF/NAM
SOLUTIONS WITH PRECIP LIKELY FOR ALL OF THE REGION. LOOKS LIKE IT
SHOULD BE RAIN FOR MOST OF THE REGION, WITH THE EXCEPTION OF THE
POCONOS AND NW NJ. HOWEVER, IF THE TRACK OF THIS LOW SHIFTS FURTHER
SE, THEN THE RAIN/SNOW LINE COULD SHIFT FURTHER SE AS WELL.


HIGH PRESSURE WILL BUILD ACROSS TO THE NORTH OF THE AREA ON MONDAY,
SLIDING TO THE EAST LATE MONDAY. CONDITIONS SHOULD REMAIN DRY FOR
MONDAY AS THE HIGH PUSHES DOWN INTO OUR AREA.

THE NEXT BIG WEATHER MAKER IN THE FORECAST LOOKS TO ARRIVE SOMETIME
LATE TUESDAY/WEDNESDAY AND THEN EXIT THE AREA BY LATE
WEDNESDAY/THURSDAY. THERE IS CONSIDERABLE DISPARITY IN THE MODEL
GUIDANCE WHICH STILL LEAD TO DIFFERING SOLUTIONS IN REGARDS TO THE
TRACK AND TIMING OF TWO LOWS MOVING UP FROM THE GULF COAST REGION.
THE ONE THING THAT THEY SEEM TO SHOW THOUGH IS THAT TEMPERATURES
LOOK TO BE ON THE WARMER SIDE WHICH WOULD LEND MORE CONFIDENCE TO A
MAJORITY RAIN EVENT
, AND IN MANY AREAS IT COULD END UP BEING HEAVY
RAIN. SOME SNOW OR WINTRY MIX WILL REMAIN POSSIBLE AT THE ONSET OF
THE PRECIPITATION AND MAINLY TO THE NORTH AND WEST OF PHILADELPHIA,
ESPECIALLY TUESDAY NIGHT INTO WEDNESDAY AS THE TEMPERATURES MAY DROP
ENOUGH TO ALLOW SOME MIXING TO OCCUR. PRECIPITATION COULD START
MOVING IN AS EARLY AS TUESDAY MORNING ACROSS OUR SOUTHERN AREAS, AND
OVERSPREADING THE AREA THROUGH THE AFTERNOON AND EVENING. RAIN IS
THEN EXPECTED TO CONTINUE THROUGH TUESDAY NIGHT AND INTO WEDNESDAY,
ENDING FOR A PERIOD OF TIME BEFORE THE SECOND LOW ARRIVES WEDNESDAY
NIGHT.

IT IS CERTAINLY LOOKING LIKE THE LATE TUESDAY THROUGH EARLY THURSDAY
TIME FRAME WILL BE FAIRLY UNSETTLED AND MANY DETAILS STILL NEED
TO BE WORKED OUT OVER THE COMING DAYS.


ONCE THIS SYSTEM CLEARS THE AREA, WE SHOULD SEE HIGH PRESSURE
BRIEFLY RIDGE NORTHWARD INTO OUR AREA FOR THURSDAY INTO FRIDAY
WITH ANOTHER COLD FRONT POSSIBLE LATE FRIDAY OR SATURDAY.
 

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And then we have Upton, no talk of shifts or changes or a hobby that things can change. They have the grab him by the balls approach right now

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...

-- Changed Discussion --

HIGH PRESSURE BUILDS IN FROM THE NORTH...PROVIDING COOL AND DRY

CONDITIONS EARLY ON TUESDAY ACROSS THE REGION. MEANWHILE...A LOW

PRESSURE DEVELOPS OVER THE GULF AND BEGINS TO TRACK ALONG THE

EASTERN SEABOARD ON TUESDAY. CLOUDS WILL INCREASE TUESDAY AFTERNOON

AS THE LOW APPROACHES THE REGION...WITH THE MAIN PRECIPITATION BAND

ASSOCIATED WITH THE LOW LIKELY MOVING INTO OUR REGION BY TUESDAY

EVENING. PRECIPITATION WILL LIKELY CONTINUE INTO EARLY THURSDAY AS

THE LOW LIFTS NORTHEAST INTO NOVA SCOTIA.

AT THIS TIME THE 12Z OPERATIONAL MODEL RUNS STILL HAVE SOME

DIFFERENCES WITH TIMING...WITH THE GFS STILL THE FASTER COMPARED TO

THE ECMWF. IN TERMS OF PRECIPITATION TYPE WITH THIS

SYSTEM...TEMPERATURES WILL BE TO WARM ON TUESDAY TO SUPPORT SNOW

ACROSS THE REGION...EXCEPT ACROSS FAR INLAND LOCATIONS TUESDAY NIGHT

AS TEMPERATURES DROP INTO THE MID TO UPPER 20S. AS TEMPERATURES WARM

UP ON WEDNESDAY INTO THE LOW TO MID 40S THE ENTIRE REGION SHOULD BE

TRANSITION BACK TO PLAIN RAIN.

THE SYSTEM SHOULD BEGIN TO PULL AWAY ON THURSDAY. BEHIND THE SYSTEM

CANADIAN HIGH PRESSURE WILL BRING A DOSE OF COLD AIR TO THE

REGION.

-- End Changed Discussion --

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Next week's pattern and storm evolution are an absolute trainwreck. Also throws a huge wrench into those folks' forecasts that are calling for a sweet pattern for late Feb thru mid-March. Looks like winter may be saying good riddance 2015-16 by flipping us the bird. Just ugly. And this isnt based off the 18z gfs op solely btw....ens means have all seemed to have taken a step back.

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Remember 12z Euro did give even NYC a few inches of snow before a changeover. Euro is not flip flopping around like crazy like GFS is, so I would pay much more attention to it rather than GFS. GFS is laughable with these MASSIVE run to run changes! This is probably going to be mostly a rainstorm but that doesn't mean we can't get a decent front end dump. 

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Wish upon a star if you like but this is going to likely be all rain for the coast. Inland areas MAY see a change to Frozen precip but I think it all goes back over to rain. As far as this winter, save for maybe a small 6-8" dying gasp I'm really thinking a change in the pattern and an early spring is on the horizon.

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Wish upon a star if you like but this is going to likely be all rain for the coast. Inland areas MAY see a change to Frozen precip but I think it all goes back over to rain. As far as this winter, save for maybe a small 6-8" dying gasp I'm really thinking a change in the pattern and an early spring is on the horizon.

March looks to start off wintry with the favorable mjo and tellies

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