NWS Upton mentions the American 12z model suites tomm morning will have the upper air data from the northern energy. They like 15:1 ratios. Fluffy snow
.LONG TERM /THURSDAY THROUGH TUESDAY/...
SHRTWV OVER THE HIGH TERRAIN OF WRN CANADA WILL BE THE WX DRIVER FOR
THE POTENTIAL SNOWSTORM. THIS FEATURE SHOULD REACH THE CNTRL PLAINS
AFT 12Z WED AND WILL THEN BE IN THE CONUS UPPER AIR NETWORK.
12Z MODEL SOLNS HAVE TRENDED TOWARDS THE CONSISTENT GFS IDEA OF A
STORM OUT TO SEA...WITH MODERATE SNOWS ON THE BACK SIDE IN
CONJUNCTION WITH THE H5 TROF. ALTHOUGH UNCERTAINTY REMAINS WITH
REGARD TO THE EXACT TRACK...TIMING AND INTENSITY OF THE
SYSTEM...PROB OF A 4-8 INCH SNOWFALL IS AROUND 50 PCT...THEREFORE A
WINTER STORM WATCH HAS BEEN ISSUED.
CONVERGENCE INVOF THE ARCTIC FRONT ON THU WILL RESULT IN AREAS OF
LIGHT PCPN THRU THE DAY. ALTHOUGH A COLDER SOLN IS PREFERRED DUE TO
THE AIRMASS IN PLACE...A WARM INTRUSION ALONG THE IMMEDIATE S COAST
CANNOT BE RULED OUT. AS A RESULT...BEST CHC FOR MINOR SNOW ACCUMS ON
THU ACROSS THE INTERIOR.
DEEPEST LIFT COMES THRU THU NGT INTO FRI. THIS IS THE PERIOD FOR
WHICH THE WATCH IS IN EFFECT. HEAVIEST ACCUMS MAY ACTUALLY BE SERN
LI FOR THIS EVENT..WITH THE NLY FLOW SHUNTING THE CSTL FRONT
OFFSHORE. PRES GRADIENT...ESPECIALLY ERN ZONES...LOOKS SUFFICIENT FOR
WINDS CAPABLE OF PRODUCING BLSN...WITH SUSTAINED CLOSE TO 30 MPH AT
TIMES WITH HIGHER GUSTS.
WENT WITH A GENERAL 15:1 SLR FOR THU NGT-FRI
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