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Check out the Long Term.

Looks to get interesting late weekend.

NATIONAL WEATHER SERVICE PITTSBURGH PA

326 PM EST MON DEC 6 2010

.SYNOPSIS...

-- Changed Discussion --COLD NORTHWEST WINDS WILL CONTINUE TO PROVIDE LAKE EFFECT SNOW

SHOWERS ACROSS THE UPPER OHIO VALLEY THROUGH TUESDAY...WITH MORE

PERSISTENT SNOW ACROSS THE INTERSTATE 80 CORRIDOR AND APPALACHIAN

MOUNTAINS. THE STORM PROVIDING NORTHWEST WINDS WILL MOVE FURTHER

NORTH INTO CANADA TUESDAY NIGHT INTO WEDNESDAY...WITH SNOW SHOWERS

AND WIND DIMINISHING IN INTENSITY.-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TUESDAY/...

-- Changed Discussion --BANDS OF HEAVIER SNOW SHOWERS CONTINUE TO WAVER AND REDEVELOP

ACROSS MUCH OF REGION EXCEPT EASTERN OHIO COUNTIES. WILL CONTINUE

WITH PREVIOUS ADVISORIES AND WARNINGS AS UPSLOPE INTO RIDGES AND

MORE INTENSE LAKE BANDS HEAD ACROSS THE NORTHERN TIER. WINDS WILL

STAY UP IN TIGHT PRESSURE GRADIENT OVERNIGHT ALLOWING FOR BLOWING

AND DRIFTING SNOW AS WELL. TEMPERATURES WILL STAY WELL BELOW

NORMAL AND WHEN COMBINED WITH WINDS WILL PRODUCE WIND CHILLS IN

THE SINGLE DIGITS LATER TONIGHT AND TUESDAY MORNING.-- End Changed Discussion --

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...

-- Changed Discussion --AS LARGE STORM SYSTEM OVER CANADA SHIFTS NORTHEAST SNOW SHOWERS

WILL BEGIN TO DIMINISH TUESDAY NIGHT. FAST MOVING SHORTWAVE IN

NORTHWEST UPPER FLOW WILL THEN DIVE INTO THE OHIO VALLEY WEDNESDAY

WHICH WILL CONTINUE SNOW SHOWERS BUT ONLY LIGHT ACCUMULATIONS

EXPECTED. BY THURSDAY SURFACE HIGH PRESSURE RIDGE WILL FINALLY

BRING AN END TO SNOW SHOWERS. TEMPERATURES WILL CONTINUE WELL

BELOW NORMAL THROUGH PERIOD.-- End Changed Discussion --

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...

-- Changed Discussion --THERE IS OPERATIONAL MODEL AGREEMENT INDICATING THAT A BROAD TROUGH

WILL BE APPROACHING FROM THE NORTHWEST ON THURSDAY NIGHT WITH A

SURFACE LOW PROGGED TO BE ACROSS THE WESTERN GREAT LAKES BY 12Z ON

FRIDAY. THE LOW WILL MOVE INTO ONTARIO...SWINGING A COLD FRONT

ACROSS THE REGION DURING THE DAY FRIDAY. MODEL THICKNESSES INDICATE

PRECIPITATION WILL BE MOSTLY SNOW...WITH LOW-LEVEL THICKNESSES

POTENTIALLY WARM ENOUGH FOR A RAIN/SNOW MIX IN WARM AIR ADVECTION

AHEAD OF THE FRONT SOUTH OF PITTSBURGH. SOUTHERLY FLOW AHEAD OF THE

COLD FRONT WILL ALLOW FOR TEMPS TO RECOVER ABOVE FREEZING FOR THE

FIRST TIME IN NEARLY A WEEK FOR MANY LOCATIONS ON FRIDAY...WITH TEMPS

FORECAST CLOSER TO NORMAL SEASONAL VALUES AHEAD OF THE FRONT.

IN THE WAKE OF THE COLD FRONT...FORECAST IS CLOSEST TO A GFS/ECMWF

BLEND...WITH THE AREA IN A SOUTHWESTERLY FLOW AHEAD OF AN DEEPENING

TROUGH ON SATURDAY. HIGH PRESSURE WILL BUILD IN BRIEFLY EARLY

SATURDAY AHEAD OF THE TROUGH. GFS/ECMWF SOLUTIONS ARE BOTH SHOWING

THIS FEATURE TAPPING INTO GULF MOISTURE WITH THE GFS INDICATING A

CLOSED LOW MOVING ACROSS THE OHIO VALLEY. WITH A SOUTHWESTERLY FLOW

AND WARMING LOW-LEVEL THICKNESSES AHEAD OF THIS SYSTEM IN MIND...A

RAIN-SNOW MIX HAS BEEN FORECAST SOUTH OF PITTSBURGH ON SUNDAY AHEAD

OF THE SYSTEM...WITH SNOW ELSEWHERE. TEMPS ARE FORECAST AROUND

NORMAL VALUES ON SUNDAY.

THE MID-LEVEL TROUGH AND POTENTIAL CLOSED LOW WILL CROSS THE AREA

SUNDAY NIGHT INTO MONDAY. THERE IS SIGNIFICANT DIFFERENCES BETWEEN

MODELS IN THE PLACEMENT OF A SURFACE LOW...WHICH WILL PLAY A MAJOR

FACTOR IN AMOUNT AND TYPE OF PRECIPITATION WITH THIS SYSTEM AS IT

CROSSES THE REGION. THOSE WITH TRAVEL PLANS SUNDAY INTO MONDAY OF

NEXT WEEK SHOULD MONITOR FUTURE FORECASTS WITH THIS SYSTEM. ON THE

BACK SIDE OF THE TROUGH...WITH A NORTHWESTERLY FLOW

RETURNING...TEMPERATURES WILL BE AROUND 10 DEGREES BELOW NORMAL WITH

SNOW SHOWERS EARLY NEXT WEEK.-- End Changed Discussion --

&&

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Check out the Long Term.

Looks to get interesting late weekend.

NATIONAL WEATHER SERVICE PITTSBURGH PA

326 PM EST MON DEC 6 2010

.SYNOPSIS...

-- Changed Discussion --COLD NORTHWEST WINDS WILL CONTINUE TO PROVIDE LAKE EFFECT SNOW

SHOWERS ACROSS THE UPPER OHIO VALLEY THROUGH TUESDAY...WITH MORE

PERSISTENT SNOW ACROSS THE INTERSTATE 80 CORRIDOR AND APPALACHIAN

MOUNTAINS. THE STORM PROVIDING NORTHWEST WINDS WILL MOVE FURTHER

NORTH INTO CANADA TUESDAY NIGHT INTO WEDNESDAY...WITH SNOW SHOWERS

AND WIND DIMINISHING IN INTENSITY.-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TUESDAY/...

-- Changed Discussion --BANDS OF HEAVIER SNOW SHOWERS CONTINUE TO WAVER AND REDEVELOP

ACROSS MUCH OF REGION EXCEPT EASTERN OHIO COUNTIES. WILL CONTINUE

WITH PREVIOUS ADVISORIES AND WARNINGS AS UPSLOPE INTO RIDGES AND

MORE INTENSE LAKE BANDS HEAD ACROSS THE NORTHERN TIER. WINDS WILL

STAY UP IN TIGHT PRESSURE GRADIENT OVERNIGHT ALLOWING FOR BLOWING

AND DRIFTING SNOW AS WELL. TEMPERATURES WILL STAY WELL BELOW

NORMAL AND WHEN COMBINED WITH WINDS WILL PRODUCE WIND CHILLS IN

THE SINGLE DIGITS LATER TONIGHT AND TUESDAY MORNING.-- End Changed Discussion --

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...

-- Changed Discussion --AS LARGE STORM SYSTEM OVER CANADA SHIFTS NORTHEAST SNOW SHOWERS

WILL BEGIN TO DIMINISH TUESDAY NIGHT. FAST MOVING SHORTWAVE IN

NORTHWEST UPPER FLOW WILL THEN DIVE INTO THE OHIO VALLEY WEDNESDAY

WHICH WILL CONTINUE SNOW SHOWERS BUT ONLY LIGHT ACCUMULATIONS

EXPECTED. BY THURSDAY SURFACE HIGH PRESSURE RIDGE WILL FINALLY

BRING AN END TO SNOW SHOWERS. TEMPERATURES WILL CONTINUE WELL

BELOW NORMAL THROUGH PERIOD.-- End Changed Discussion --

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...

-- Changed Discussion --THERE IS OPERATIONAL MODEL AGREEMENT INDICATING THAT A BROAD TROUGH

WILL BE APPROACHING FROM THE NORTHWEST ON THURSDAY NIGHT WITH A

SURFACE LOW PROGGED TO BE ACROSS THE WESTERN GREAT LAKES BY 12Z ON

FRIDAY. THE LOW WILL MOVE INTO ONTARIO...SWINGING A COLD FRONT

ACROSS THE REGION DURING THE DAY FRIDAY. MODEL THICKNESSES INDICATE

PRECIPITATION WILL BE MOSTLY SNOW...WITH LOW-LEVEL THICKNESSES

POTENTIALLY WARM ENOUGH FOR A RAIN/SNOW MIX IN WARM AIR ADVECTION

AHEAD OF THE FRONT SOUTH OF PITTSBURGH. SOUTHERLY FLOW AHEAD OF THE

COLD FRONT WILL ALLOW FOR TEMPS TO RECOVER ABOVE FREEZING FOR THE

FIRST TIME IN NEARLY A WEEK FOR MANY LOCATIONS ON FRIDAY...WITH TEMPS

FORECAST CLOSER TO NORMAL SEASONAL VALUES AHEAD OF THE FRONT.

IN THE WAKE OF THE COLD FRONT...FORECAST IS CLOSEST TO A GFS/ECMWF

BLEND...WITH THE AREA IN A SOUTHWESTERLY FLOW AHEAD OF AN DEEPENING

TROUGH ON SATURDAY. HIGH PRESSURE WILL BUILD IN BRIEFLY EARLY

SATURDAY AHEAD OF THE TROUGH. GFS/ECMWF SOLUTIONS ARE BOTH SHOWING

THIS FEATURE TAPPING INTO GULF MOISTURE WITH THE GFS INDICATING A

CLOSED LOW MOVING ACROSS THE OHIO VALLEY. WITH A SOUTHWESTERLY FLOW

AND WARMING LOW-LEVEL THICKNESSES AHEAD OF THIS SYSTEM IN MIND...A

RAIN-SNOW MIX HAS BEEN FORECAST SOUTH OF PITTSBURGH ON SUNDAY AHEAD

OF THE SYSTEM...WITH SNOW ELSEWHERE. TEMPS ARE FORECAST AROUND

NORMAL VALUES ON SUNDAY.

THE MID-LEVEL TROUGH AND POTENTIAL CLOSED LOW WILL CROSS THE AREA

SUNDAY NIGHT INTO MONDAY. THERE IS SIGNIFICANT DIFFERENCES BETWEEN

MODELS IN THE PLACEMENT OF A SURFACE LOW...WHICH WILL PLAY A MAJOR

FACTOR IN AMOUNT AND TYPE OF PRECIPITATION WITH THIS SYSTEM AS IT

CROSSES THE REGION. THOSE WITH TRAVEL PLANS SUNDAY INTO MONDAY OF

NEXT WEEK SHOULD MONITOR FUTURE FORECASTS WITH THIS SYSTEM. ON THE

BACK SIDE OF THE TROUGH...WITH A NORTHWESTERLY FLOW

RETURNING...TEMPERATURES WILL BE AROUND 10 DEGREES BELOW NORMAL WITH

SNOW SHOWERS EARLY NEXT WEEK.-- End Changed Discussion --

&&

I hate being that close to rain/snow line, seems like its also more north then they forecast.

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WTF? NWS Really downgraded my amounts for tonight/tomorrow.. I had 2-4" tonight, and 2-4 tomorrow earlier now..

Tonight: Snow showers. Low around 19. West wind around 17 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.

Tuesday: Snow showers. High near 25. West wind around 16 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Tuesday Night: A chance of snow showers. Cloudy, with a low around 16. West wind around 15 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible

What are they smoking?

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Check out the Long Term.

Looks to get interesting late weekend.

NATIONAL WEATHER SERVICE PITTSBURGH PA

326 PM EST MON DEC 6 2010

.SYNOPSIS...

-- Changed Discussion --COLD NORTHWEST WINDS WILL CONTINUE TO PROVIDE LAKE EFFECT SNOW

SHOWERS ACROSS THE UPPER OHIO VALLEY THROUGH TUESDAY...WITH MORE

PERSISTENT SNOW ACROSS THE INTERSTATE 80 CORRIDOR AND APPALACHIAN

MOUNTAINS. THE STORM PROVIDING NORTHWEST WINDS WILL MOVE FURTHER

NORTH INTO CANADA TUESDAY NIGHT INTO WEDNESDAY...WITH SNOW SHOWERS

AND WIND DIMINISHING IN INTENSITY.-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TUESDAY/...

-- Changed Discussion --BANDS OF HEAVIER SNOW SHOWERS CONTINUE TO WAVER AND REDEVELOP

ACROSS MUCH OF REGION EXCEPT EASTERN OHIO COUNTIES. WILL CONTINUE

WITH PREVIOUS ADVISORIES AND WARNINGS AS UPSLOPE INTO RIDGES AND

MORE INTENSE LAKE BANDS HEAD ACROSS THE NORTHERN TIER. WINDS WILL

STAY UP IN TIGHT PRESSURE GRADIENT OVERNIGHT ALLOWING FOR BLOWING

AND DRIFTING SNOW AS WELL. TEMPERATURES WILL STAY WELL BELOW

NORMAL AND WHEN COMBINED WITH WINDS WILL PRODUCE WIND CHILLS IN

THE SINGLE DIGITS LATER TONIGHT AND TUESDAY MORNING.-- End Changed Discussion --

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...

-- Changed Discussion --AS LARGE STORM SYSTEM OVER CANADA SHIFTS NORTHEAST SNOW SHOWERS

WILL BEGIN TO DIMINISH TUESDAY NIGHT. FAST MOVING SHORTWAVE IN

NORTHWEST UPPER FLOW WILL THEN DIVE INTO THE OHIO VALLEY WEDNESDAY

WHICH WILL CONTINUE SNOW SHOWERS BUT ONLY LIGHT ACCUMULATIONS

EXPECTED. BY THURSDAY SURFACE HIGH PRESSURE RIDGE WILL FINALLY

BRING AN END TO SNOW SHOWERS. TEMPERATURES WILL CONTINUE WELL

BELOW NORMAL THROUGH PERIOD.-- End Changed Discussion --

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...

-- Changed Discussion --THERE IS OPERATIONAL MODEL AGREEMENT INDICATING THAT A BROAD TROUGH

WILL BE APPROACHING FROM THE NORTHWEST ON THURSDAY NIGHT WITH A

SURFACE LOW PROGGED TO BE ACROSS THE WESTERN GREAT LAKES BY 12Z ON

FRIDAY. THE LOW WILL MOVE INTO ONTARIO...SWINGING A COLD FRONT

ACROSS THE REGION DURING THE DAY FRIDAY. MODEL THICKNESSES INDICATE

PRECIPITATION WILL BE MOSTLY SNOW...WITH LOW-LEVEL THICKNESSES

POTENTIALLY WARM ENOUGH FOR A RAIN/SNOW MIX IN WARM AIR ADVECTION

AHEAD OF THE FRONT SOUTH OF PITTSBURGH. SOUTHERLY FLOW AHEAD OF THE

COLD FRONT WILL ALLOW FOR TEMPS TO RECOVER ABOVE FREEZING FOR THE

FIRST TIME IN NEARLY A WEEK FOR MANY LOCATIONS ON FRIDAY...WITH TEMPS

FORECAST CLOSER TO NORMAL SEASONAL VALUES AHEAD OF THE FRONT.

IN THE WAKE OF THE COLD FRONT...FORECAST IS CLOSEST TO A GFS/ECMWF

BLEND...WITH THE AREA IN A SOUTHWESTERLY FLOW AHEAD OF AN DEEPENING

TROUGH ON SATURDAY. HIGH PRESSURE WILL BUILD IN BRIEFLY EARLY

SATURDAY AHEAD OF THE TROUGH. GFS/ECMWF SOLUTIONS ARE BOTH SHOWING

THIS FEATURE TAPPING INTO GULF MOISTURE WITH THE GFS INDICATING A

CLOSED LOW MOVING ACROSS THE OHIO VALLEY. WITH A SOUTHWESTERLY FLOW

AND WARMING LOW-LEVEL THICKNESSES AHEAD OF THIS SYSTEM IN MIND...A

RAIN-SNOW MIX HAS BEEN FORECAST SOUTH OF PITTSBURGH ON SUNDAY AHEAD

OF THE SYSTEM...WITH SNOW ELSEWHERE. TEMPS ARE FORECAST AROUND

NORMAL VALUES ON SUNDAY.

THE MID-LEVEL TROUGH AND POTENTIAL CLOSED LOW WILL CROSS THE AREA

SUNDAY NIGHT INTO MONDAY. THERE IS SIGNIFICANT DIFFERENCES BETWEEN

MODELS IN THE PLACEMENT OF A SURFACE LOW...WHICH WILL PLAY A MAJOR

FACTOR IN AMOUNT AND TYPE OF PRECIPITATION WITH THIS SYSTEM AS IT

CROSSES THE REGION. THOSE WITH TRAVEL PLANS SUNDAY INTO MONDAY OF

NEXT WEEK SHOULD MONITOR FUTURE FORECASTS WITH THIS SYSTEM. ON THE

BACK SIDE OF THE TROUGH...WITH A NORTHWESTERLY FLOW

RETURNING...TEMPERATURES WILL BE AROUND 10 DEGREES BELOW NORMAL WITH

SNOW SHOWERS EARLY NEXT WEEK.-- End Changed Discussion --

&&

Pulling there same old rain/snow which currently looks like a huge snowstorm

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:snowman: :snowman: :snowman:

SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE PITTSBURGH PA

836 PM EST MON DEC 6 2010

OHZ041-PAZ013-014-020-021-073-070230-

ALLEGHENY PA-BEAVER PA-BUTLER PA-COLUMBIANA OH-LAWRENCE

PA-WESTMORELAND PA-

836 PM EST MON DEC 6 2010

...SNOW BAND FORMING OVER AREA...

A BAND OF SNOW IS QUICKLY DEVELOPING OVER PORTIONS OF THE AREA. THE

BAND IS EXTENDING FROM NORTHERN COLUMBIANA COUNTY THROUGH NORTHERN

BEAVER COUNTY INTO SOUTHERN BUTLER COUNTY AND NORTHERN ALLEGHENY

COUNTY.

THIS BAND IS BECOMING MORE ORGANIZED AND BEGINNING TO PRODUCE

HEAVIER BURSTS OF SNOW. THE BAND IS GENERALLY BETWEEN 10 AND 20

MILES WIDE.

SOME LOCATIONS THAT MAY BE IMPACTED BY THE BAND OF SNOW SHOWERS

INCLUDE...

ALIQUIPPA...BEAVER...BEAVER FALLS...BLACKHAWK...ECONOMY BORO...

ELLWOOD CITY...EVANS CITY...FOMBELL...FOX CHAPEL...FRANKLIN PARK...

GIBSONIA...MARS...PERRYSVILLE...RUSSELLTON...WEXFORD...

ZELIENOPLE...COLUMBIANA...EAST PALESTINE...LEETONIA AND SALEM

SNOW WILL ACCUMULATE RAPIDLY WHERE BURSTS OF HEAVY SHOW SHOWERS

PERSIST. VISIBILITIES CAN BECOME SHARPLY REDUCED AND UNTREATED

PAVEMENTS CAN BECOME SNOW COVERED AND SLIPPERY.

PLEASE REPORT SNOW AMOUNTS TO THE NATIONAL WEATHER SERVICE BY CALLING

TOLL FREE...1-877-633-6772.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TRAVELERS NEED TO BE ALERT FOR CONDITIONS SUDDENLY BECOMING HAZARDOUS

AS UNTREATED PAVEMENTS CAN BECOME QUICKLY SNOW COVERED AND SLIPPERY

AND VISIBILITIES SHARPLY REDUCED. GUSTY WINDS CAN ADD BLOWING SNOW TO

THE WINTRY WEATHER HAZARDS.

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Wow, this is/was a really nice band that set up over top of us this evening. Gusty winds out there too. Not sure how much we got i wouldn't doubt near 3 inches though. Btw the gfs trended better for us tonight compared to 18z for next weekend thumbsupsmileyanim.gif

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Wow, this is/was a really nice band that set up over top of us this evening. Gusty winds out there too. Not sure how much we got i wouldn't doubt near 3 inches though. Btw the gfs trended better for us tonight compared to 18z for next weekend thumbsupsmileyanim.gif

Not for me unfortunately. I got a little today but most of it stayed north of me. Yeah, the GFS continues to look interesting for us. Still in the game at least!

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Seems like the streamers are breaking up a bit? Is this due to the low starting to pull away?

RECENT RADAR AND SATELLITE DATA COUPLED WITH HRRR MODEL OUTPUT SHOW

THE PERSISTENT SNOW SHOWER BANDS ACROSS WESTERN PENNSYLVANIA OF

EARLIER TONIGHT SHOULD DECREASE IN INTENSITY AND COVERAGE

OVERNIGHT. CLOUD TOPS HAVE BEEN WARMING AND HRRR MODEL OUTPUT

SUPPORTS THIS TREND.

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This is why LES usually doesn't excite me all that much. I usually get left out of the party when it's occurring. I picked up about a half inch. Oh well. The curse of living in the South Hills I guess. We sometimes get lucky with LES down this way, but not too often. Anyway, I guess we can start focusing more on the possible weekend storm.

Sent from my T-Mobile G1 using Tapatalk

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:snowman: HOLY CRAP!!!!!!

post-1757-0-33557100-1291685954.gif

Hey Eastern Wx Peeps! Good to see something to watch the next week. DT over on StormVista seems to think a GL\OV whopper also, I-95 looks like a washout with temps too warm for any serious accumulation. But as with all models let's get to within 48 hours before we break out the shovels and snowblowers, I have seen too many fantasy storms in the 150hr range go through the lakes or out to sea.

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With my untrained quick looking of models here is what I get so far from Sunday-Monday storm.

Latest 12GFS has low tracking directly over us and then a new one taking over on the coast.

My guess would be that warm air ahead of the storm would bring rain on Sunday turning to snow sunday night and monday?

Anybody with more experience want to add their input?

I know it is still very early and models will change.

At least we still have something to track.

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