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January 22-23 Mid Atlantic Storm Thread #3 - No Banter


stormtracker

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Me too... I think 18-24" might be a good forecast for the area. 12-24 just in case, but all the guidance seems to be in agreement with the higher end.

I expect NWS to go with 12-18, maybe 14-20 for here. Doesn't really matter, its going to be more than a foot with blizzard conditions. The other thing that is a distinct possibility esp east of I-95 is sleet mixing in, or even a period of all sleet. I totally expect that here.

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This storm will be the all time biggest for our area. Just ridiculous runs tonight for everyone. Never thought i would have a situation with this kind of agreement of 3 feet of snow 3 days out. Its just crazy.

 

That was beautiful, though I wouldn't hop on that biggest train just yet.  96 storm produced 36+ in places out here.  Regardless of these model outputs, I still don't think we touch that bar.  Hope we do though.

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That was beautiful, though I wouldn't hop on that biggest train just yet.  96 storm produced 36+ in places out here.  Regardless of these model outputs, I still don't think we touch that bar.  Hope we do though.

I wasnt out there in 96. Was in sterling and we mixed a lot for that storm. Was here for pd2. I got 36 with that one. This one is modeled to be just as good if not better. And it is way better for dc and nova than pd2 was. They all are approching 30 inches on the models as well. This is a very unique storm as modeled. Maybe once in a lifetime for the DC region.

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That was beautiful, though I wouldn't hop on that biggest train just yet.  96 storm produced 36+ in places out here.  Regardless of these model outputs, I still don't think we touch that bar.  Hope we do though.

With the consistency of the past few days...I wouldn't be surprised to see 24-36" across the area.

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NWS DC/Baltimore has a small update!

HAZARDOUS WEATHER OUTLOOK

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

105 AM EST WED JAN 20 2016

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-201215-

CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-

CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-

CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-

CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-

CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-

TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-

TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-

TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-

PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-

CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY-

CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-

PATUXENT RIVER TO BROOMES ISLAND MD-

TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH

ISLAND-DISTRICT OF COLUMBIA-SOUTHERN BALTIMORE-PRINCE GEORGES-

ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-SOUTHEAST HARFORD-

PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-

ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-

KING GEORGE-

105 AM EST WED JAN 20 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE

CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN

CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF

COLUMBIA.

.DAY ONE...TONIGHT

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A PERIOD OF SNOW SHOWERS IS POSSIBLE DURING THE EVENING COMMUTE

ON WEDNESDAY.

THERE IS A HIGH THREAT FOR A SIGNIFICANT WINTER STORM FRIDAY INTO

SATURDAY. POTENTIAL IMPACTS INCLUDE SIGNIFICANT TRAVEL DISRUPTIONS

DUE TO ROAD AND AIRPORT CLOSURES...AS WELL AS THREATS TO LIFE AND

PROPERTY. PLAN AHEAD TO MINIMIZE IMPACT ON YOU AND YOUR FAMILY.

A GALE WARNING MAY BE REQUIRED FOR PORTIONS OF THE WATERS FRIDAY

NIGHT THROUGH SUNDAY. STORM FORCE WINDS ARE ALSO POSSIBLE SATURDAY

THROUGH SATURDAY NIGHT.

MODERATE COASTAL FLOODING IS POSSIBLE DURING THE TIME OF HIGH TIDE

FRIDAY NIGHT AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

$$

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Bad coastal flooding looks like it could be a serious, if underreported aspect of this storm.

 

It won't be if many of these verbatims are on the right track. The Euro in particular may be close to an Ash Wednesday '62 or December '92 type of impact with multiple high tide cycles, very strong sustained 10 m winds and a very long duration of fetch right into the coast. Early surge projection @ Sandy Hook below is ugly.

 

CZJPFNvWwAIiqji.jpg

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Probably very little...

Storms of this magnitude and scope are very dynamic. There are aspects of such storms that simply cannot be modeled. Take a look at the surface analysis. This is progged to be a massive storm and its pulling in oceanic content that is 4 to 5 SD above normal temperature. Somebody at least closer to the water is going to have some mixing, even though the model is not showing it. It happens in 99% of significant coastal storms.

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It won't be if many of these verbatims are on the right track. The Euro in particular may be close to an Ash Wednesday '62 or December '92 type of impact with multiple high tide cycles, very strong sustained 10 m winds and a very long duration of fetch right into the coast. Early surge projection @ Sandy Hook below is ugly.

CZJPFNvWwAIiqji.jpg

That is a terrifying map. Mount holly posted may be top 5 coastal events since the 40s. We were rocked in October, then last weekend we took a beating with moderate flooding, and some beaches are now scrambling with the temporary dunes. Would be very concerned for you folks on the Delmarva and especially out of this region into the jersey shore cape may to sandy hook.

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SHORTWAVE CURRENTLY MOVING THROUGH THE PACIFIC NORTHWEST...
...EVENTUAL CLOSED LOW TRACKING FROM THE OZARKS TO THE SOUTHERN
MID-ATLANTIC...
...STRONG SURFACE CYCLONE DEVELOPING OFF THE CAROLINA COAST BY
FRIDAY NIGHT...


FINAL PREFERENCE: BLEND OF THE 00Z GFS WITH THE 00Z GEFS/12Z ECMWF
ENSEMBLE MEANS

FORECAST CONFIDENCE: SLIGHTLY BELOW AVERAGE

WATER VAPOR IMAGERY SHOWED A SHORTWAVE CROSSING INTO WESTERN WA
WHILE ADDITIONAL ENERGY WAS STREAMING UNDERNEATH IT MOVING THROUGH
THE CENTRAL GREAT BASIN. THE COMBINATION OF THESE FEATURES WILL
EVENTUALLY MERGE AND EVOLVE INTO A MUCH DEEPER UPPER LOW WHICH
CROSSES THE LOWER TN VALLEY BY FRIDAY MORNING. AT THIS POINT A
SURFACE WAVE WILL BE LIFTING TOWARD NORTHERN AL/SOUTHERN TN WITH
MANY SOLUTIONS MOVING TOWARD THE SLOWER DIRECTION. THE 00Z ECMWF
TRENDED EVEN SLOWER WHICH BRINGS IT TO THE FAR WESTERN SIDE OF THE
SPREAD. THIS BRINGS IT CLOSER TO THE SLOWER 00Z NAM SOLUTION. THIS
UPPER LOW WILL CONTINUE TO INTENSIFY AS IT MIGRATES FROM THE LOWER
TN VALLEY TO THE LOWER MID-ATLANTIC WHICH WILL AID IN CYCLOGENESIS
OFF THE CAROLINAS COAST BY FRIDAY NIGHT. A VARIETY OF SOLUTIONS
ARE NOTED WITH THE 00Z NAM/CMC BEING ON THE FAR NORTHERN SIDE OF
THE ENSEMBLE SPREAD WHILE THE SLOWER 00Z ECMWF IS NOTED OFF TO THE
SOUTH
. THE 00Z GFS HAS CONTINUED TO EXUDE MUCH BETTER RUN-TO-RUN
CONTINUITY VERSUS THE ECMWF SUITE WHICH HAS BEEN MIGRATING
SOUTHWARD/SLOWER
. WILL TRUST THE STABILITY OF THE 00Z GFS HERE BUT
COMBINE IT WITH THE CENTERED ENSEMBLE MEANS. THE OVERALL TREND HAS
BEEN SLOWER SO THIS MAY DELAY THE ONSET OF SNOW ACCUMULATIONS
ACROSS MANY LOCATIONS.
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