Area Forecast Discussion
Issued by NWS Albany, NY

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000
FXUS61 KALY 281733
AFDALY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
1233 PM EST WED JAN 28 2015

.SYNOPSIS...
THE NOR`EASTER POSITIONED IN THE GULF OF MAINE...WILL GRADUALLY
LOSE ITS INFLUENCE OVER OUR REGION TODAY. HIGH PRESSURE WILL
BUILD IN BRINGING INCREASING SUNSHINE. HIGH PRESSURE WILL CREST
OVERHEAD TONIGHT BRINGING A VERY COLD NIGHT. IT THEN WILL MOVE TO
THE EAST. A CLIPPER TYPE LOW WILL BRING A LIGHT SNOWFALL TO AREAS
FROM THE CAPITAL REGION SOUTHWARD. FURTHER NORTH...MODERATE
SNOWFALL AMOUNTS ARE MORE LIKELY THURSDAY NIGHT INTO FRIDAY. IT
WILL TURN BITTERLY COLD AIR BEHIND THIS CLIPPER FRIDAY NIGHT AND
SATURDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
AS OF 1220 PM EST...FLURRIES FROM THE CAPITAL DISTRICT NORTH AND
EAST HAVE PRETTY MUCH DISSIPATED AS DRIER AIR WORKS INTO THE
REGION WITH THE ONLY EXCEPTION IS A VERY SMALL AREA OVER THE HIGH
TERRAIN OF SOUTHERN VERMONT. THIS WILL DISSIPATE OVER THE NEXT
HOUR OF SO. STILL A LOT OF LINGERING CLOUDS OVER WESTERN NEW
ENGLAND...WHICH WILL GRADUALLY DECREASE THIS AFTERNOON.

STILL A COLD DAY IN STORE WITH HIGH TEMPERATURES THIS AFTERNOON
IN THE LOWER TO MID 20S FROM THE CAPITAL REGION SOUTHWARD...TEENS TO
NEAR 20 FARTHER NORTH.

A BREEZE FROM THE NORTHWEST PERSIST TODAY...AVERAGING 10-15
MPH...GUSTING UP TO 20 MPH IN A FEW PLACES. THIS COULD PRODUCE SOME
MINOR BLOWING OF THE SNOW IN OUTLYING AREAS. SNOW BLOWING ACROSS
ROADS COULD TURN WET SPOTS INTO BLACK ICE...SO CAUTION IS ADVISED
IF YOU ENCOUNTER THIS WHILE DRIVING OR WALKING. WINDS ARE EXPECTED
TO SUBSIDE AS WE GO INTO THE EVENING HOURS.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY NIGHT/...
TONIGHT...HIGH PRESSURE WILL CREST OVER THE REGION. THE SKY WILL BE
MAINLY CLEAR...THE WINDS DIMINISH. IT LOOKS LIKE A FRIGID NIGHT WITH
NEARLY IDEAL RADIATIONAL CONDITIONS. WE BELIEVE THAT THE MAV AND
EVEN MET GUIDANCE IS NOT COLD ENOUGH ESPECIALLY CONSIDERING THAT
MUCH OF THE AREA RECEIVED A FRESH SNOW COVER. THEREFORE...WE WENT
SEVERAL DEGREES LOWER THAN THE COLDEST SET OF AMERICAN MOS
OUTPUT...AND CLOSER TO THE EVEN COLDER EUROPEAN MOS (ECS).
THEREFORE EXPECT LOWS AROUND ZERO IN AND AROUND THE CAPITAL
REGION...-5 TO -15 FURTHER NORTH...SINGLE NUMBER SOUTH WHERE
GENERALLY A LITTLE LESS SNOW WAS ON THE GROUND.

THURSDAY...HIGH PRESSURE WILL DEPART. A POTENT CLIPPER TYPE
SYSTEM...WILL RACE ACROSS THE GREAT LAKES INTO NEW YORK...WHICH WILL
ADD A LITTLE MOISTURE TO IT (MAINLY ONTARIO WHICH IS STILL NOT
FROZEN). SUNSHINE ON THURSDAY WILL BE FOLLOWED BY INCREASING CLOUDS
DURING THE AFTERNOON. A SOUTHERLY BREEZE WILL HELP BOOST
TEMPERATURES UP INTO THE 20S IN OUR NORTHERN AREAS...AROUND 30 OR A
LITTLE HIGHER FROM ALBANY SOUTH.

LOW PRESSURE WILL MOVE INTO OUR REGION ALONG WITH A PRETTY GOOD NOSE
OF A LOW LEVEL JET HELPING TO INDUCE AN IMPRESSIVE RIBBON OF
ISENTROPIC LIFT THURSDAY NIGHT. THIS WILL ALL YIELD TO A PERIOD (OR
PERIODS OF MAINLY LIGHT SNOW IN THE 1-3 INCH RANGE). HOWEVER...A FEW
BANDLETS OF MODERATE SNOW COULD BECOME EMBEDDED IN THE SHIELD. OFTEN
TIMES...THESE TYPE OF CLIPPERS WITH THEIR SOUTHERLY FLOW...RESULT IN
SOME LOCAL GEOGRAPHIC ENHANCEMENT OF SNOWFALL ACROSS THE
ADIRONDACKS...AS WELL AS THE NORTHERN RIM OF THE MOHAWK
VALLEY...EASTWARD INTO THE SARATOGA REGION. AS A RESULT THERE IS THE
POTENTIAL FOR SLIGHTLY HIGHER AMOUNTS OF SNOWFALL IN THESE AREAS
WHERE 3 TO 6 INCHES COULD ACCUMULATE.

THE CLIPPER WILL DEPART...BUT ALOFT...AN UPPER LEVEL IS FORECAST TO
DIG TO OUR SOUTH. THIS SCENARIO WILL LIKELY KEEP CLOUDS AND
SCATTERED SHOWERS AROUND AWHILE ON FRIDAY...PERHAPS A LITTLE MORE
ACCUMULATION TO MANY MOUNTAIN AREAS. A SECONDARY COLD FRONT MIGHT
FOLLOW AS WELL ALSO ADDING TO THE POSSIBILITY OF A FEW SNOW
SHOWERS.

OTHERWISE...IT WILL TURN WINDY. HIGH TEMPERATURES LOOK TO PEAK
AROUND 30 IN THE VALLEYS...20S HIGHER TERRAIN. THESE HIGH
TEMPERATURES MIGHT TAKE PLACE A COUPLE HOURS THAN THEY NORMALLY
DO...THEN BEGIN TO FALL. FRIDAY NIGHT THE WIND WILL PERSIST...ONLY
SLOWLY DIMINISHING. ANOTHER VERY COLD ARCTIC AIR AIRMASS WILL
OVERSPREAD THE REGION. THE SKY SHOULD CLEAR BUT TEMPERATURES WILL
TUMBLE ONCE MORE. LOOK FOR LOWS IN THE SINGLE DIGITS TO AROUND ZERO
IN MOST OF THE VALLEYS...BUT 5 TO 15 BELOW ZERO ACROSS THE HIGHER
TERRAIN...ESPECIALLY THE ADIRONDACKS. THE COMBINATION OF A 10-15 MPH
WIND ALONG WITH THESE BITTERLY COLD READINGS COULD PRODUCE DANGEROUS
WIND CHILLS...ESPECIALLY ACROSS THE HIGHER TERRAIN.

THE SNOWFALL AND WIND CHILL POTENTIAL WILL BE DISCUSSED IN OUR
HAZARDOUS WEATHER OUTLOOK (HWO).

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
A COLD YET ACTIVE WEATHER PATTERN FOR THE WEEKEND AND INTO EARLY
NEXT WEEK.

WE BEGIN THE WEEKEND ON A QUIET YET CHILLY END TO JANUARY WITH A
NARROW SURFACE RIDGE OF HIGH PRESSURE ACROSS THE CWFA.  HOWEVER...A
FAST MOVING IMPULSE APPROACHES THE CENTRAL GREAT LAKES SATURDAY
NIGHT AS AN ARCTIC SURFACE BOUNDARY SLIDES INTO UPSTATE NY.  THIS
MAY TOUGH OFF A PERIOD OF LAKE EFFECT SNOW DOWNWIND OF LAKE ONTARIO
WHERE WE WILL HAVE THE CHANCE FOR SOME LIGHT SNOW SHOWERS INTO
PORTIONS OF THE WESTERN DACKS.

THIS FRONT BECOMES QUASI-STATIONARY INTO THE FIRST DAY OF FEBRUARY
/SUNDAY/ AND LOSES ITS DEFINITION AS ATTENTION QUICKLY SHIFTS TOWARD
A DEVELOPING STORM OVER THE CENTRAL PLAINS.  A STRONG PV ANOMALY IS
FORECAST TO DIVE SOUTHEAST FROM THE NORTHWEST TERRITORIES AND OUT
ONTO THE PLAINS AS THE CUTOFF UPPER LOW NEAR THE FOUR CORNERS REGION
EJECTS OUT INTO THE SOUTHERN PLAINS.  THIS WILL RESULT IN SURFACE
PRESSURE FALLS AS LATEST 00Z GLOBAL RUNS POINT TOWARD A DEEPENING
CYCLONE TRACKING ALONG THE OHIO RIVER VALLEY INTO MONDAY MORNING.

THERMAL COLUMN APPEARS TO BE COLD FOR A SNOW EVENT WITH THIS SYSTEM
/THE EXCEPTION TO THIS WOULD BE THE GGEM WITH A WARMER SOLUTION WITH
HIGHER QPF VALUES/.  SPEAKING OF QPF/S...BOTH THE ECMWF/GFS AND EVEN
THE DGEX ARE RATHER HIGH WITH GENERALLY AROUND ONE INCH WATER
EQUIVALENT. PLUME DIAGRAMS FROM THE GFS...AS ONE WOULD EXPECTED AS
THE POTENTIAL EVENT IS MANY DAYS AWAY...VARY GREATLY BUT THE
CONSENSUS IS CLOSE TO THAT ONE INCH WATER EQUIVALENT.  WE WILL
CONTINUE TO HIGHLIGHT IN THE HWO AT THIS TIME.

TEMPERATURES THROUGH THE PERIOD WILL AVERAGE BELOW NORMAL.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE 24 HOUR TAF
PERIOD ENDING 18Z THURSDAY. HIGH PRESSURE WILL MOVE ACROSS THE
AREA...WHICH WILL PROVIDE CLEAR SKIES BY LATE THIS AFTERNOON. SOME
HIGH AND MID LEVEL CLOUDS WILL START TO INCREASE BY MID TO LATE
THURSDAY MORNING AHEAD OF A CLIPPER LOW PRESSURE SYSTEM APPROACHING
FROM THE GREAT LAKES.

WINDS THROUGH THE DAYLIGHT HOURS TODAY WILL BE NORTHERLY BETWEEN
5-10 KTS...BECOMING VARIABLE AT LESS THAN 5 KTS AFTER DARK. WINDS
WILL SHIFT TO THE SOUTH AROUND 3-7 KTS BY THURSDAY AFTERNOON.

OUTLOOK...

THURSDAY: NO OPERATIONAL IMPACT. NO SIG WX.
THURSDAY NIGHT: HIGH OPERATIONAL IMPACT. PERIODS OF SN.
FRIDAY: MODERATE OPERATIONAL IMPACT. BREEZY. CHANCE OF SN.
FRIDAY NIGHT TO SATURDAY: NO OPERATIONAL IMPACT. NO SIG WX.
SATURDAY NIGHT: NO OPERATIONAL IMPACT. NO SIG WX.
SUNDAY: LOW OPERATIONAL IMPACT. SLIGHT CHANCE OF SN.

&&

.HYDROLOGY...
NO SIGNIFICANT HYDRO PROBLEMS ARE EXPECTED THROUGH THE NEXT FIVE
DAYS.

THE NEXT CHANCE OF PRECIPITATION WILL BE THURSDAY NIGHT INTO FRIDAY
IN THE FORM OF SNOW...WITH LIGHT TO MODERATE ACCUMULATIONS EXPECTED.

THERE IS ALSO THE CHANCE OF SNOW SUNDAY NIGHT INTO MONDAY.

ICE WILL CONTINUE TO THICKEN ON RIVERS...STREAMS...CREEKS...LAKES
AND OTHER BODIES OF WATER.

THE EAGLE BRIDGE GAGE ON THE HOOSIC RIVER CONTINUES TO BE HAMPERED
BY ICE EFFECTS.

FOR DETAILS ON SPECIFIC AREA RIVERS AND LAKES...INCLUDING OBSERVED
AND FORECAST RIVER STAGES AND LAKE ELEVATIONS...PLEASE VISIT THE
ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ GRAPHS ON OUR WEBSITE.

&&

.ALY WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
NY...NONE.
MA...NONE.
VT...NONE.

&&

$$
SYNOPSIS...HWJIV
NEAR TERM...LFM/JPV
SHORT TERM...HWJIV
LONG TERM...BGM
AVIATION...JPV
HYDROLOGY...HWJIV/JPV






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