| random_ski_guy wrote: |
| really Tin, which storm are we on the raining side for; tuesday or saturday? |
the Euro says both, as of now. Not sure what to believe b/c the latest AFD out of BTV is a lot more hopeful for Tuesday and the balance of the week. Oh what to believe?????
THE EXTENDED FORECAST CONTINUES TO LOOK INTERESTING...PARTICULARLY
THE EVOLUTION OF THE STRONG LOW-LATITUDE TROUGH EVIDENT IN WV
IMAGERY THIS AFTERNOON VCNTY OF NRN BAJA CA. MEANWHILE...140+KT
300MB JET AND DEEP TROPOSPHERIC TROUGH IS HEADED EWD INTO BRITISH
COLUMBIA COAST THIS AFTN...WITH POSSIBLE UPPER PHASING OF THESE TWO
SYSTEMS ON MONDAY 12/25 VCNTY MID/LWR MS RIVER VLY. CHRISTMAS DAY
LOOKS DRY ACROSS THE NORTH COUNTRY WITH HIGH PRESSURE IN PLACE AND
HIGH TEMPERATURES IN THE UPPER 30S...EVEN A FEW LOW 40S POSSIBLE IN
THE FAR SERN FA. HOWEVER...THE GFS AND ECMWF ARE COMING INTO BETTER
AGREEMENT SHOWING A PHASED/HIGH-AMPLITUDE H5 TROUGH ALONG THE MS
RIVER VLY AT 00/26TH...WITH A SFC LOW TRACKING FROM THE CENTRAL GULF
COAST NEWD INTO THE CENTRAL APPALACHIANS OR CAROLINAS BY 00Z/26TH.
RAPID DEEPENING OF THE SFC CYCLONE IS LIKELY DURING THE EARLY
MORNING HRS ON THE 26TH...WITH THE LOW REACHING THE SOUTH COAST OF
NEW ENGLAND BY 12Z/26TH. BELIEVE SNOW WILL DEVELOP ACROSS THE
FORECAST AREA SOMETIME DURING THE OVERNIGHT HRS/EARLY TUESDAY
MORNING. THERE ARE IMPORTANT SFC LOW TRACK DIFFERENCES ON
TUESDAY...WHICH WILL DETERMINE THE EXTENT TO WHICH THE FORECAST AREA
RECEIVES SNOW VERSUS A RAIN/SNOW MIX AT LOWER ELEVATIONS. THE 00Z
ECMWF FAVORS MOSTLY SNOW WITH THE SFC LOW EAST OF BOSTON /984MB/ AT
00Z WED. MEANWHILE...THE GFS TAKES THE LOW TO NEAR KMPV /978MB/ AT
00Z WED...SUGGESTING MORE OF A WIDESPREAD MIXED PRECIP EVENT FOR THE
NORTH COUNTRY. SO...WHILE IT/S TOO EARLY TO DETERMINE THE EXACT
TRACK/SNOW AMTS...IT APPEARS A MAJOR CYCLOGENESIS EVENT AND QPF
EPISODE WILL LIKELY OCCUR ACROSS THE FA MONDAY NIGHT INTO TUESDAY.
BECAUSE WE HAVE WINTER WX CONCERNS IN THE NEAR-TERM...WILL NOT ISSUE
AN SPS...BUT WILL UPDATE THE HWO TO HIGHLIGHT THE POTENTIAL ADVERSE
TRAVEL IMPACTS ESPECIALLY ON DEC 26TH ACROSS OUR ENTIRE REGION.
THEREAFTER...HAVE MAINTAINED A CHANCE OF SNOW SHOWERS INTO
WEDNESDAY...WITH A WEAK CLIPPER LIKE SYSTEM ON THURSDAY BRINGING
ANOTHER CHANCE OF LIGHT SNOW...ESPECIALLY ACROSS NRN AREAS. AFTER A
MILD CHRISTMAS DAY AND LOW ELEVATION HIGHS IN THE MID 30S FOR
TUESDAY...TEMPERATURES SHOULD FALL BACK CLOSER TO SEASONAL LEVELS
THRU MID-LATE WEEK...WITH HIGH TEMPS GENERALLY BELOW FREEZING
AREA-WIDE WED-FRI.