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SNE Obs and Disco 12/28-1/7


HoarfrostHubb

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Say goodbye to the torch. :snowman:

THE YEAR 2010 FEATURED A WARMER THAN NORMAL AVERAGE TEMPERATURE

WHICH RANKED WITHIN THE TOP FIVE WARMEST YEARS ON RECORD. NEAR

NORMAL PRECIPITATION AND TOTAL SNOWFALL WAS RECORDED AT THE LONG

TERM CLIMATOLOGICAL SITES. ALTHOUGH THE PRECIPITATION FREQUENCY WAS

BELOW NORMAL...THERE WERE A NUMBER OF SIGNIFICANT PRECIPITATION

EVENTS...COASTAL STORMS OR CONVECTION WHICH PRODUCED ONE INCH OR

MORE OF DAILY PRECIPITATION THIS YEAR.

A MODERATE TO STRONG EL NINO PERSISTED INTO THE EARLY SPRING...

FOLLOWED A TRANSITION FROM EL NINO TO A MODERATE TO STRONG LA NINA

DURING THE LATE SPRING THROUGH THE END OF THE YEAR. THE YEAR BEGAN

MILD AND MOIST WITH RECORD OR NEAR RECORD RAINFALL IN MARCH. A HIGH

PRESSURE RIDGE GENERALLY PREVAILED ALONG THE EASTERN SEABOARD DURING

THE TRANSITION FROM EL NINO TO LA NINA. THE HIGH PRESSURE RIDGE

GENERALLY PROVIDED ABUNDANT SUNSHINE AND VERY WARM TEMPERATURES FROM

LATE SPRING THROUGH MUCH OF THE SUMMER. IN FACT CLIMATOLOGICAL

SUMMER RANKED WITHIN THE TOP FIVE WARMEST ON RECORD AT THE LONG TERM

CLIMATE SITES. PERSISTENT ABOVE NORMAL MONTHLY AVERAGE TEMPERATURE

DEPARTURES BEGAN TO DROP CLOSER TO NORMAL DURING THE FALL OF

2010...THEN BELOW NORMAL DURING DECEMBER 2010. THE NAO OR NORTH

ATLANTIC OSCILLATION TURNED STRONGLY NEGATIVE...WITH THE BLOCKING

RIDGE NEAR GREENLAND ALLOWING COLDER AIR TO BE FUNNELED SOUTH FROM

CANADA INTO SOUTHERN NEW ENGLAND.

FOR OFFICIAL DATA VISIT WWW.NCDC.NOAA.GOV

THE FOLLOWING IS THE 2010 ANNUAL CLIMATE SUMMARY FOR THE LONG TERM

CLIMATE SITES...

BOSTON MA LOGAN INTL AIRPORT OFFICIAL RECORDS SINCE 1872...EXCEPT

1892 FOR SNOWFALL.

2010 AVERAGE TEMPERATURE 53.8F...DEPARTURE +2.1F

1971-2000 30 YEAR NORMAL 51.7F

2010 IS THE WARMEST YEAR ON RECORD BEATING 53.6F IN 1949 AND 1953

http://forecast.weather.gov/product.php?site=NWS&format=CI&version=1&glossary=0&highlight=off&issuedby=BOX&product=PNS

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Look at all that precip blossoming down south over the mid atl. It'll be a race to get the cold in for western/central areas while ene rains

Only down to 43.5 (off a high of 44.8), but the dp's dropped to 32. Top 8' wind was 13 mph a few minutes ago. I think the temp drop is beginning in ernst now, though. Might bode well for the western fringe of the qpf areas.

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Actually not much at all, only around the base of trees.

Yeah your area def had a lot less drifting from the wetter snow so the snow pack is probably a lot more uniform and solid.

Even up here in Chelmsford the snow has held on pretty well. Some bare patches in exposed spots but its mostly covered everywhere.

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Actually not much at all, only around the base of trees.

One thing I noticed down that way was there was snow plastered on tree trunks 12-15 feet up in the direction of the prevailing wind during the storm (I guess)

We have not had that this year. My snow was sugar that stuck to nothing... just acted like sandblast grit.

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Yeah your area def had a lot less drifting from the wetter snow so the snow pack is probably a lot more uniform and solid.

Even up here in Chelmsford the snow has held on pretty well. Some bare patches in exposed spots but its mostly covered everywhere.

Yeah, neighbors have some bare spots, but I still have 1-2'' .

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here you go blizz!

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/...

-- Changed Discussion --TONIGHT...

WATCHING AREA ALONG AND OFF THE MID ATLC COAST AS A NEW WAVE OF

LOW PRES BEGINS TO DEVELOP. NOTICING MODEST PRES FALLS ACROSS THIS

REGION ALONG WITH LIGHTNING STRIKES...INDICATING WEAK

CYCLONGENESIS OCCURRING. BOTH NAM AND GFS SUPPORT A PERIOD OF RAIN

TO OVERSPREAD EASTERN CT/RI AND ERN MA AFTER DARK AS WAVE OF LOW

PRES MOVES NE ALONG THE OFFSHORE STALLED FRONT.

AS COLDER AIR ADVECTS ACROSS THE REGION TONIGHT NW PORTION OF

PRECIP SHIELD WILL LIKELY CHANGE TO SNOW. PRECIP SHIELD COULD

BLOSSOM AS IT MOVES ACROSS THE REGION GIVEN GOOD JET DYNAMICS /LFQ

OF UPR LVL JET/ AND WEAK SLANTWISE STABILITY. ALSO BOTH NAM AND

GFS SUGGEST MODEST OMEGA /10-20 -UBAR/S/ IN THE SNOW GROWTH REGION

AT THIS TIME. SO AN HOUR OR TWO OF LIGHT TO MODERATE SNOW IS

POSSIBLE ACROSS NE CT/RI AND AND EASTERN MA 00Z-06Z FROM WEST TO

EAST. ANY SNOW ACCUMULATIONS WOULD LIKELY BE MINOR /COATING TO AN

INCH/ BUT POSSIBLY ENOUGH TO YIELD SLIPPERY TRAVEL ESPECIALLY ON

UNTREATED SURFACES. WILL WAIT ARRIVAL OF NEW 12Z ECMWF ALONG WITH

15Z SREF AND MONITOR UPSTREAM CONDITIONS BEFORE ISSUING ANY

STATEMENTS ON POSSIBLE SNOW ACCUMULATIONS AND TRAVEL IMPACTS.

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here you go blizz!

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/...

-- Changed Discussion --TONIGHT...

WATCHING AREA ALONG AND OFF THE MID ATLC COAST AS A NEW WAVE OF

LOW PRES BEGINS TO DEVELOP. NOTICING MODEST PRES FALLS ACROSS THIS

REGION ALONG WITH LIGHTNING STRIKES...INDICATING WEAK

CYCLONGENESIS OCCURRING. BOTH NAM AND GFS SUPPORT A PERIOD OF RAIN

TO OVERSPREAD EASTERN CT/RI AND ERN MA AFTER DARK AS WAVE OF LOW

PRES MOVES NE ALONG THE OFFSHORE STALLED FRONT.

AS COLDER AIR ADVECTS ACROSS THE REGION TONIGHT NW PORTION OF

PRECIP SHIELD WILL LIKELY CHANGE TO SNOW. PRECIP SHIELD COULD

BLOSSOM AS IT MOVES ACROSS THE REGION GIVEN GOOD JET DYNAMICS /LFQ

OF UPR LVL JET/ AND WEAK SLANTWISE STABILITY. ALSO BOTH NAM AND

GFS SUGGEST MODEST OMEGA /10-20 -UBAR/S/ IN THE SNOW GROWTH REGION

AT THIS TIME. SO AN HOUR OR TWO OF LIGHT TO MODERATE SNOW IS

POSSIBLE ACROSS NE CT/RI AND AND EASTERN MA 00Z-06Z FROM WEST TO

EAST. ANY SNOW ACCUMULATIONS WOULD LIKELY BE MINOR /COATING TO AN

INCH/ BUT POSSIBLY ENOUGH TO YIELD SLIPPERY TRAVEL ESPECIALLY ON

UNTREATED SURFACES. WILL WAIT ARRIVAL OF NEW 12Z ECMWF ALONG WITH

15Z SREF AND MONITOR UPSTREAM CONDITIONS BEFORE ISSUING ANY

STATEMENTS ON POSSIBLE SNOW ACCUMULATIONS AND TRAVEL IMPACTS.

Congrats eastern areas. We'll try to give the CAA a kick for you.

41.6/26

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here you go blizz!

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/...

-- Changed Discussion --TONIGHT...

WATCHING AREA ALONG AND OFF THE MID ATLC COAST AS A NEW WAVE OF

LOW PRES BEGINS TO DEVELOP. NOTICING MODEST PRES FALLS ACROSS THIS

REGION ALONG WITH LIGHTNING STRIKES...INDICATING WEAK

CYCLONGENESIS OCCURRING. BOTH NAM AND GFS SUPPORT A PERIOD OF RAIN

TO OVERSPREAD EASTERN CT/RI AND ERN MA AFTER DARK AS WAVE OF LOW

PRES MOVES NE ALONG THE OFFSHORE STALLED FRONT.

AS COLDER AIR ADVECTS ACROSS THE REGION TONIGHT NW PORTION OF

PRECIP SHIELD WILL LIKELY CHANGE TO SNOW. PRECIP SHIELD COULD

BLOSSOM AS IT MOVES ACROSS THE REGION GIVEN GOOD JET DYNAMICS /LFQ

OF UPR LVL JET/ AND WEAK SLANTWISE STABILITY. ALSO BOTH NAM AND

GFS SUGGEST MODEST OMEGA /10-20 -UBAR/S/ IN THE SNOW GROWTH REGION

AT THIS TIME. SO AN HOUR OR TWO OF LIGHT TO MODERATE SNOW IS

POSSIBLE ACROSS NE CT/RI AND AND EASTERN MA 00Z-06Z FROM WEST TO

EAST. ANY SNOW ACCUMULATIONS WOULD LIKELY BE MINOR /COATING TO AN

INCH/ BUT POSSIBLY ENOUGH TO YIELD SLIPPERY TRAVEL ESPECIALLY ON

UNTREATED SURFACES. WILL WAIT ARRIVAL OF NEW 12Z ECMWF ALONG WITH

15Z SREF AND MONITOR UPSTREAM CONDITIONS BEFORE ISSUING ANY

STATEMENTS ON POSSIBLE SNOW ACCUMULATIONS AND TRAVEL IMPACTS.

It actually looked decent on BUFKIT for eastern areas, as long as the moisture and cold arrive in a timely manner.

Snowpack still holding on, but there are bare spots in the sun torched and drifted areas. Areas that are shaded still have 8-10". Big difference on the sunny side of the street vs shaded side..lol.

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Cold air advection sorrily lacking behind this front as winds remain almost calm. Is it possible that the imminent cyclogenesis and stalling cold front could provide for formation of a coastal front and subsequent northerly ageostrophic flow to enhance cold air advection overnight ? Getting CAA from the W or WNW will take forever, as it usually does in these situations.

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Cold air advection sorrily lacking behind this front as winds remain almost calm. Is it possible that the imminent cyclogenesis and stalling cold front could provide for formation of a coastal front and subsequent northerly ageostrophic flow to enhance cold air advection overnight ? Getting CAA from the W or WNW will take forever, as it usually does in these situations.

It's not really gonna happen until after 00z. Areas like up by 850 will probably cool first.

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