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Feb 24-25 Upstate NY / North Country Winter Storm


CNYWxGuy

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I'm becoming a believer that we (Thruway folks) are going to have one heck of a impact on the roadways tomorrow morning and into the evening....snow starts at night, wet, dense snow, then a little warming and higher solar angle....all while some of us snow hard.....Then later, temps and sun will fall and things will start to refreeze around Fri afternoon. This one looks good for many of us.

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Buffalo NWS

GIVEN THE STEEPNESS OF THE ISENTROPIC SURFACE…THE MAGNITUDE OF THE

OMEGA/LIFT ALONG THIS SURFACE AND THE INTERCEPTION OF THE CRYSTAL

GROWTH ZONE ACROSS WESTERN NY DURING FRIDAY MORNING… THUNDERSNOW

IS NOT OUT OF THE QUESTION…ALONG WITH 1 TO 2 INCH PER HOUR

SNOWFALL RATES AND BRIEF BUT HEAVY GRAUPEL SHOWERS. THIS WILL BE

WITHIN THE BAND OF GREATEST FORECASTED SNOW ACCUMULATIONS MENTIONED

ABOVE. THE POSITION OF THE 300/250MB JET PLACES OUR REGION IN THE

RIGHT ENTRANCE REGION OF A 160KT+ JET OVER SOUTHERN QUEBEC AS THE

NOSE OF THE SOUTHERN STREAM JET MAX IS TO OUR SOUTH…A COUPLED JET

INTERACTION ENHANCING DEEP LIFT.

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I'm not saying BGM is wrong for say...they could be right I guess...But, I'm not drinking the kool-aid BGM is pouring....The valley locations...Like the MV ... will see 5-6 inches... higher elevations north of the thruway will see 10-12 inches.... working on a ratio of 10 or 12 -1

wouldn't it make sense that the higher elevations south of the thruway could also

be higher? esp with a colder track, and less mixing threat?

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18z RGEM has (by eyeballing, adding, and converting....:arrowhead: ) a pretty large swath of 1.50" of qpf for SW/C NY including the Finger Lakes, East of L. Ontario (Tug south), and most of the MV into the D'acks....with that area appearing to have no real sign of a warm layer...

Pretty intense line of convection getting ready to leave TX ATT....NAM shows it, but maybe not as intense.....let's see if it tries to rob the atmosphere to the north (where we have deep layer lifting to take place) and skim off some of our totals....

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KALB

FRIDAY MORNING...AT THE VERY LEAST...MESSY...WITH SNOW...HEAVY AT

TIMES TO START IN THE MORNING FROM ALBANY NORTHWARD INTO THE

SOUTHERN DACKS...AND SOUTHERN VT...AND INTO THE LAKE

GEORGE/SARATOGA REGION. THE MAIN CULPRIT FOR THE MORNING SNOWFALL

WILL BE A BAND OF MODERATE TO HEAVY WARM ADVECTIVE PRECIP ALONG

WITH STRONG MID LEVEL FRONTOGENETICAL FORCING...PRODUCING SNOWFALL

RATES OF AT LEAST 1-2 INCHES PER HOUR...WITH EVEN HIGHER RATES

POSSIBLE. THEN...BY MID MORNING...AS MILDER AIR DRAWS

NORTHWARD...AREAS FROM ALBANY SOUTH AND EAST SHOULD MIX WITH

SLEET/FREEZING RAIN...AND EVENTUALLY RAIN. HOWEVER...THE NORTHERN

EDGE OF THIS CHANGEOVER ZONE MAY NOT LIFT MUCH FURTHER NORTH THAN

ALBANY. AND...GIVEN THE HIGH PRECIP RATES EXPECTED ACROSS THIS

ZONE...WHERE IT SETS UP WILL BE THE DIFFERENCE BETWEEN HEAVY

SNOWFALL AMTS...OF 6-12 INCHES...AND LIGHT TO MODERATE SNOWFALL

AMTS...OF 2-6 INCHES...WITH UNDER 2 INCHES WELL TO THE SOUTH

ACROSS THE MID HUDSON VALLEY. AT THIS POINT...BY INCORPORATING A

BLEND OF THE NAM/ECMWF/GFS THERMAL PROFILES...WE GENERALLY EXPECT

3-6 INCHES OF SNOWFALL WITHIN THE CAPITAL REGION...EXCEPT 4-8

INCHES ACROSS NORTHERN PORTIONS OF THE CAPITAL REGION...EXTENDING

INTO THE NORTHERN BERKS...AND HELDERBERGS...WITH 8-12 INCHES

POSSIBLE IN SCHOHARIE CO. FURTHER N...EXPECT 5-10 INCHES WITHIN

THE SARATOGA REGION...AND AT LEAST 6-12 INCHES ACROSS THE NORTHERN

PORTIONS OF THE MOHAWK VALLEY AND SOUTHERN DACKS.

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