Area Forecast Discussion
Issued by NWS Albany, NY

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS61 KALY 290202
AFDALY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
1000 PM EDT MON JUL 28 2014

.SYNOPSIS...
LOW PRESSURE OVER WESTERN NEW ENGLAND...WILL MOVE NORTHEAST TO
NEAR NORTHERN MAINE BY TUESDAY MORNING. A WEAK RIDGE OF HIGH
PRESSURE WILL BRING MAINLY FAIR AND COOL WEATHER ON TUESDAY. ON
WEDNESDAY...MOSTLY FAIR AND COOL WEATHER IS EXPECTED...BUT AN
UPPER LEVEL IMPULSE MAY CAUSE A FEW AFTERNOON SHOWERS OR
THUNDERSTORMS.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
RESIDUAL SHOWERS ACROSS THE NORTHERN 2/3RDS OF THE REGION WILL
SLOWLY DIMINISH AS THE UPPER LOW/TROUGH AND SURFACE LOW CONTINUE TO
TRACK FURTHER EAST OF THE REGION.  AS SEEN IN THE 00Z SOUNDINGS FROM
KBUF AND HERE...THE INVERSION NEAR H750 MAY INHIBIT TOO MUCH
CLEARING OVERNIGHT AS WE WILL DELAY THIS PROGRESS UNTIL VERY LATE
TONIGHT.  OTHERWISE...JUST MODIFIED HOURLY VALUES AND POPS AS THE
REMAINDER OF THE FORECAST REMAINS IN GOOD SHAPE.

SOME PARTIAL CLEARING IS EXPECTED BY DAYBREAK...BUT UPSTREAM
CONDITIONS AND THE LOW LEVEL MOISTURE LEFT OVER OUR REGION IN THE
WAKE OF ALL THE RAIN SUGGESTS SOME AREAS MAY BE MOSTLY CLOUDY TO
CLOUDY THROUGH DAYBREAK. BOUNDARY LAYER WINDS SHOULD BE STEADY ALL
NIGHT...SUGGESTING SOME LIGHT WEST TO NORTHWEST SURFACE WINDS
PERSISTING IN SOME AREAS THROUGH THE NIGHT. SO...NOT IDEAL
RADIATIONAL COOLING CONDITIONS TONIGHT...BUT COLD ADVECTION SHOULD
HELP TEMPERATURES TO FALL TO THE LOWER TO MID 50S...SOME UPPER 40S
TO LOWER 50S IN HIGHER TERRAIN.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/...
ANY MORNING CLOUDINESS SHOULD DECREASE THROUGH THE MORNING AND
SUNSHINE SHOULD HELP TEMPERATURES CLIMB TO THE MID TO UPPER 70S
TOMORROW...WITH AROUND 70 TO MID 70S HIGHER TERRAIN. BETTER
RADIATIONAL COOLING CONDITIONS TOMORROW NIGHT WITH A LOW LEVEL
RIDGE AXIS OVER THE REGION AND LIGHT WINDS. LOWS IN THE 50S...WITH
40S IN COLDER SPOTS.

BROAD UPPER ENERGY ASSOCIATED WITH THE ADVANCING MEAN UPPER TROUGH
AXIS APPROACHES WEDNESDAY THROUGH THURSDAY. NOT MUCH MOISTURE
ASSOCIATED WITH THIS SYSTEM DOMINATED BY NORTHERN STREAM FLOW...SO
INTERVALS OF CLOUDS WITH ISOLATED TO SCATTERED SHOWERS AND
THUNDERSTORMS SLOWLY SPREADING EAST WEDNESDAY THROUGH THURSDAY.
HIGHS WEDNESDAY AND THURSDAY IN THE UPPER 70S TO LOWER 80S WITH
LOWER TO MID 70S HIGHER TERRAIN.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
THIS WILL BE A PERIOD OF VERY LITTLE ATMOSPHERIC MOTION ACROSS THE
NORTHEASTERN U.S.  DURING THIS TIME...A QUASI-STATIONARY FRONT WILL
BE SITUATED ALONG THE EAST COAST.  THE CLOSENESS OF THIS FRONT TO
OUR REGION COUPLED WITH WEAK HIGH PRESSURE INLAND WILL RESULT IN A
STAGNANT AIR MASS OF GRADUALLY INCREASING HUMIDITY THAT WILL MEAN A
CHANCE OF SHOWERS AND THUNDERSTORMS THROUGHOUT MOST OF THE PERIOD.
A COLD FRONT FROM CANADA WILL HAVE REACHED ONLY THE NORTHERN GREAT
LAKES AND SOUTHERN QUEBEC BY MONDAY...AND THUS SHALL PROVIDE NO
RELIEF TO OUR REGION.

THERE WILL ALSO BE LITTLE NOTABLE VARIATION IN THE TEMPERATURE
PATTERN...WITH HIGHS EACH DAY FROM THE LOWER 70S TO LOWER 80S.  LOWS
THURSDAY NIGHT WILL RANGE FROM THE UPPER 40S IN THE HIGH PEAKS OF
THE WESTERN ADIRONDACKS...TO AROUND 60 DEGREES IN THE LOWER MID
HUDSON VALLEY.  LOWS FRIDAY THROUGH SUNDAY NIGHTS WILL RANGE FROM
THE LOWER 50S IN THE HIGH PEAKS OF THE ADIRONDACKS AND GREENS...TO
THE LOWER 60S DOWN THE HUDSON AND LOWER CHAMPLAIN VALLEYS...THOUGH
READINGS MAY HOLD UP IN THE MID 60S DOWN THE HUDSON VALLEY SUNDAY
NIGHT.  NORMAL HIGHS AND LOWS IN ALBANY THE FIRST WEEK OF AUGUST ARE
IN THE LOWER 80S AND LOWER 60S...RESPECTIVELY.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
SHOWERS WITH MVFR TO SOME IFR CONDITIONS ARE EXPECTED
OVERNIGHT...ESPECIALLY WHERE RAIN HAS FALLEN AND LOWER STRATUS MAY
DEVELOP.  THOSE SHOWERS SHOULD DIMINISH LATE TONIGHT AS THE UPPER
TROUGH AND SURFACE LOW TRACK FURTHER EAST OF THE REGION.  A
WEST-NORTHWEST GRADIENT WIND FLOW WILL REMAIN OVERNIGHT AT SPEEDS
10KTS OR LESS.

CONDITIONS IMPROVE TO VFR TUESDAY MORNING /MAY BE A LITTLE DELAYED
AT KPSF WITH UPSLOPE CONDITIONS/ AS A RIDGE OF HIGH PRESSURE MOVES
INTO THE REGION.

OUTLOOK...

TUESDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
WEDNESDAY: LOW OPERATIONAL IMPACT.  NO SIG WX.
WEDNESDAY NIGHT: LOW OPERATIONAL IMPACT. ISOLATED SHRA...TSRA.
THURSDAY: MODERATE OPERATIONAL IMPACT. SCATTERED SHRA...TSRA.
THURSDAY NIGHT: NO OPERATIONAL IMPACT.  NO SIG WX.
FRIDAY: MODERATE OPERATIONAL IMPACT. CHANCE OF SHRA...TSRA.
FRIDAY NIGHT: LOW OPERATIONAL IMPACT. SLIGHT CHANCE OF SHRA...TSRA.
SATURDAY: LOW OPERATIONAL IMPACT. SLIGHT CHANCE OF SHRA.

&&

.FIRE WEATHER...
LOW PRESSURE OVER WESTERN NEW ENGLAND...WILL MOVE NORTHEAST TO
NEAR NORTHERN MAINE BY TUESDAY MORNING. A WEAK RIDGE OF HIGH
PRESSURE WILL BRING MAINLY FAIR AND COOL WEATHER ON TUESDAY. ON
WEDNESDAY...MOSTLY FAIR AND COOL WEATHER IS EXPECTED...BUT AN
UPPER LEVEL IMPULSE MAY CAUSE A FEW AFTERNOON SHOWERS OR
THUNDERSTORMS.

RH VALUES WILL BE 80 TO 100 PERCENT TONIGHT AND TOMORROW NIGHT. RH
VALUES WILL BE 40 TO 55 PERCENT TUESDAY AND WEDNESDAY AFTERNOONS.
WINDS ARE EXPECTED TO BE WEST TO NORTHWEST AT 15 MPH OR LESS
THROUGH TUESDAY...THEN SOUTH AT 15 MPH OR LESS WEDNESDAY.

&&

.HYDROLOGY...
REPORTS AND RIVER GAGE AT ROCKINGHAM IN NORTHERN WINDHAM COUNTY
EXPERIENCED FLASH FLOODING THIS EVENING.  COMBINATION OF TRAINING
CONVECTION AND NEARLY SATURATED GROUND RESULTED IN THE RAPID RISE OF
WATER.  AS OF 10 PM...PER COORDINATION AND RIVER GAGE...THE RIVER
LEVEL HAS JUST DROPPED BELOW FLOOD STAGE.  HOWEVER...WATER LEVELS
REMAIN ELEVATED AND WILL CONTINUE WITH THE FLASH FLOOD WARNING FOR A
LITTLE LONGER.

THE HIGHEST RAINFALL TOTAL ARE EXPECTED MAINLY NORTH OF I-90 WITH
UP TO AN INCH OF ADDITIONAL RAINFALL THROUGH THIS EVENING. LOCALLY
HEAVY RAINFALL IN THUNDERSTORMS MAY RESULT IN SOME FLOODING OF LOW
LYING AND POOR DRAINAGE AREAS. AREAS WHICH HAVE ALREADY RECEIVED A
ROUND OF HEAVY RAINFALL WILL BE THE MOST VULNERABLE.

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...NAS
NEAR TERM...NAS/BGM
SHORT TERM...NAS
LONG TERM...ELH
AVIATION...BGM
FIRE WEATHER...NAS
HYDROLOGY...NAS/BGM






USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.