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Pittsburgh, PA Thread: Winter 2015-2016


meatwad

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Btw Im hearing good news about the Euro run even though it looks ugly still surface wise.

EURO data is so hard to come by.  People used to post the snow maps but no more.  Nothing I have seen has been of note.  A lot of people just focus on their regions so maybe I missed something in the translation. 

post-16713-1452536469_thumb.jpg

 

post-16713-1452536474_thumb.jpg

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Keep in mind that the weekend storm will change after this clipper goes by. One thing I noticed on the 12Z GFS is that the weekend storm is trending farther east. We may start as rain but we will have to watch things closely especially with a storm on the coast.

I agree, which is why I said probably not worth discussing in much detail until Wednesday. Although I don't have access, from what I am able to glean from other posters is that the Euro continues to be further east (still to our west) and has a faster transfer. Right now we could be looking at a rain to some back-end snow but should the further east solution continue to move in that direction things could improve.

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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE PITTSBURGH PA

237 PM EST MON JAN 11 2016

OHZ039>041-048>050-057>059-068-069-PAZ013-014-020>023-029-031-073-

075-WVZ001>004-012-021-509-120345-

/O.NEW.KPBZ.WW.Y.0003.160112T0600Z-160113T0000Z/

TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-

MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-LAWRENCE-BUTLER-BEAVER-

ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-

FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-

INCLUDING THE CITIES OF...NEW PHILADELPHIA...CARROLLTON...SALEM...

COSHOCTON...CADIZ...STEUBENVILLE...ZANESVILLE...CAMBRIDGE...

ST. CLAIRSVILLE...CALDWELL...WOODSFIELD...NEW CASTLE...BUTLER...

BEAVER...PITTSBURGH METRO AREA...KITTANNING...INDIANA...

WASHINGTON...WAYNESBURG...GREENSBURG...LATROBE...UNIONTOWN...

WEIRTON...BETHANY...WHEELING...MOUNDSVILLE...NEW MARTINSVILLE...

FAIRMONT...MORGANTOWN

237 PM EST MON JAN 11 2016

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 7 PM EST

TUESDAY...

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A WINTER

WEATHER ADVISORY FOR SNOW AND WIND GUSTS...WHICH IS IN EFFECT

FROM 1 AM TO 7 PM EST TUESDAY.

* SNOW ACCUMULATION...1 TO 3 INCHES.

* SNOW BEGINNING... AFTER MIDNIGHT AS LIGHT TO MODERATE SNOW.

* PERIOD OF MOST INTENSE SNOW...5 AM TO 10 AM AS SNOW TRANSITIONS

TO HEAVIER SNOW SHOWERS.

* SNOW ENDING...2 PM TO 7 PM FROM WEST TO EAST.

* IMPACTS...HAZARDOUS TRAVEL CONDITIONS ARE EXPECTED DUE TO

SNOW...WIND GUSTS AROUND 30 MPH...AND PERIODIC LOW VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT OF SNOW AND WIND WILL

CAUSE TRAVEL DIFFICULTIES.

&&

$$

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Taken from Cohen blog

Longer term we continue to expect that variability in the polar vortex to strongly influence Northern Hemisphere (NH) weather patterns. We are more confident that a troposphere-stratosphere-troposphere coupling event (T-S-T) is underway (Cohen et al. 2007) that will result in a sudden stratospheric warming (SSW). Details of which are given below but based on a correct anticipation of a T-S-T we expect the following AO trends long-term. The AO will trend negative this week as geopotential heights continue to build across the Arctic. However next week the predicted strong pulse of vertical energy will force a positive trend in the tropospheric AO but a negative trend in the stratospheric AO. Once the SSW peaks the tropospheric AO will once again trend negative and the overall negative AO should persist longer than the initial negative AO event that is currently ongoing and is predicted to initiate the SSW.

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Does anyone know specifically what we are looking for in the end result of the clipper in order for the systems over the weekend to be more beneficial for us?   

I think we want the clipper to bomb out in Canada and just stay in place further west rather than move east, however more importantly would be a later phase and a more positive tilt trough access, then add to that mixture a faster transfer to the coast. It looks like we are seeing trends in that direction just from 12z yesterday to 6z today.

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I think we want the clipper to bomb out in Canada and just stay in place further west rather than move east, however more importantly would be a later phase and a more positive tilt trough access, then add to that mixture a faster transfer to the coast. It looks like we are seeing trends in that direction just from 12z yesterday to 6z today.

Thanks.  GFS is trending better, doesnt look like others are as of yet.

 

Looks good for the South Hills.

acckucherasnowma.png

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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE PITTSBURGH PA

835 AM EST TUE JAN 12 2016

OHZ039>041-048>050-057>059-068-069-PAZ013-014-020>023-029-031-073-

075-WVZ001>004-012-021-509-122145-

/O.CON.KPBZ.WW.Y.0003.000000T0000Z-160113T0000Z/

TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-

MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-LAWRENCE-BUTLER-BEAVER-

ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-

FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-

INCLUDING THE CITIES OF...NEW PHILADELPHIA...CARROLLTON...SALEM...

COSHOCTON...CADIZ...STEUBENVILLE...ZANESVILLE...CAMBRIDGE...

ST. CLAIRSVILLE...CALDWELL...WOODSFIELD...NEW CASTLE...BUTLER...

BEAVER...PITTSBURGH METRO AREA...KITTANNING...INDIANA...

WASHINGTON...WAYNESBURG...GREENSBURG...LATROBE...UNIONTOWN...

WEIRTON...BETHANY...WHEELING...MOUNDSVILLE...NEW MARTINSVILLE...

FAIRMONT...MORGANTOWN

835 AM EST TUE JAN 12 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS

EVENING...

* ADDITIONAL SNOW ACCUMULATION...1 TO 2 INCHES.

* PERIOD OF MOST INTENSE SNOW...INTO MID AFTERNOON.

* SNOW ENDING...BY EVENING.

* TEMPERATURES...DROP THROUGH THE 20S THIS AFTERNOON WITH LOWS 5

TO 10 TONIGHT. WIND CHILL VALUES WILL BE BETWEEN ZERO AND MINUS

5 WEDNESDAY MORNING.

* IMPACTS...HAZARDOUS TRAVEL CONDITIONS ARE EXPECTED DUE TO TO

SNOW AND BLOWING SNOW WITH WIND GUSTS OF 30 TO 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT SNOW AND WIND WILL CAUSE

TRAVEL DIFFICULTIES.

&&

$$

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Special Weather Statement


SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE PITTSBURGH PA

1129 AM EST TUE JAN 12 2016

OHZ050-059-PAZ007>009-013>016-020>023-029-073-WVZ001>003-121800-

JEFFERSON-BELMONT-JEFFERSON-WASHINGTON-MERCER-WESTMORELAND-LAWRENCE-

VENANGO-CLARION-INDIANA-BUTLER-ALLEGHENY-ARMSTRONG-FOREST-BEAVER-

OHIO-BROOKE-HANCOCK-

1129 AM EST TUE JAN 12 2016

...A SNOW SQUALL WILL AFFECT SOUTHEASTERN JEFFERSON...NORTHEASTERN

BELMONT...CLARION...ALLEGHENY...ARMSTRONG...BEAVER...NORTHERN

WASHINGTON...WESTERN WESTMORELAND...SOUTHERN VENANGO...JEFFERSON...

NORTHWESTERN INDIANA...SOUTHERN FOREST...SOUTHEASTERN MERCER...

EASTERN LAWRENCE...BUTLER...BROOKE...NORTHERN OHIO AND HANCOCK

COUNTIES...

AT 1125 AM EST...THE LEADING EDGE OF A SNOW SQUALL WAS ALONG A LINE

EXTENDING FROM 11 MILES SOUTH OF FRANKLIN TO NEAR TILTONSVILLE.

MOVEMENT WAS EAST AT 35 MPH.

EXPECT A QUICK ADDITIONAL INCH OF SNOW WITH WIND GUSTS OF 30 TO 35

MPH. VISIBILITY MAY BRIEFLY DROP TO NEAR ZERO.

LOCATIONS IMPACTED INCLUDE...

PITTSBURGH...PENN HILLS...MOUNT LEBANON...BETHEL PARK...ROSS

TOWNSHIP...MCCANDLESS TOWNSHIP...MONROEVILLE...CRANBERRY...MOON

TOWNSHIP...MCMURRAY...GREENSBURG...WEIRTON...MCKEESPORT...

STEUBENVILLE...BUTLER...WASHINGTON...FRANKLIN PARK...OIL CITY...

JEANNETTE AND ALIQUIPPA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...

INTERSTATE 70 IN PENNSYLVANIA BETWEEN MILE MARKERS 13 AND 31...AND

BETWEEN MILE MARKERS 42 AND 57.

PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 11 AND 79.

INTERSTATE 79 IN PENNSYLVANIA BETWEEN MILE MARKERS 50 AND

109...AND BETWEEN MILE MARKERS 32 AND 49.

INTERSTATE 80 IN PENNSYLVANIA BETWEEN MILE MARKERS 25 AND 89.

INTERSTATE 279 IN PENNSYLVANIA BETWEEN MILE MARKERS 1 AND 13.

INTERSTATE 376 IN PENNSYLVANIA BETWEEN MILE MARKERS 31 AND 84.

A WINTER WEATHER ADVISORY IS IN EFFECT FOR THE AREA. PLEASE MONITOR

LOCAL MEDIA OUTLETS AND THE NATIONAL WEATHER SERVICE FOR FURTHER

STATEMENTS.

LAT...LON 4014 7958 4014 8089 4139 7992 4151 7896

4144 7896 4145 7906 4142 7909 4134 7909

4138 7897 4130 7883

TIME...MOT...LOC 1625Z 254DEG 28KT 4123 7980 4023 8069

$$

15

 

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That first low cutting screws up the cold air ugh.

Yeah, I'm not sure the models are cold be so far off that the primary into lake Superior will end up not happening despite the fact we are still several days out. Best bet is for the trend to put more focus on the secondary on the coast sooner to continue but it might just mean going from a 45 and a heavy rain to 36 and light rain at this point for us.

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Yeah, I'm not sure the models are cold be so far off that the primary into lake Superior will end up not happening despite the fact we are still several days out. Best bet is for the trend to put more focus on the secondary on the coast sooner to continue but it might just mean going from a 45 and a heavy rain to 36 and light rain at this point for us.

 I think they have been emphasizing the secondary more in recent runs but even a weak low cutting west is going to drag warm air up with it. I swear this time last week the talk in other regions was about the beast of a block we would have lol. Either way a nice squall going on right now!

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I think they have been emphasizing the secondary more in recent runs but even a weak low cutting west is going to drag warm air up with it. I swear this time last week the talk in other regions was about the beast of a block we would have lol. Either way a nice squall going on right now!

The pacific jet is killing anything trying to develop.
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