FXUS61 KPBZ 062118
AFDPBZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
418 PM EST SUN DEC 6 2009
.SYNOPSIS...
HIGH PRESSURE WILL PROVIDE A DRY WEATHER TONIGHT AND A WEAK COLD
FRONT WILL BRING A SMALL CHANCE OF SNOW SHOWERS ON MONDAY. HOWEVER...
A MUCH STRONGER SYSTEM WILL BRING A WIDESPREAD MIX OF PRECIPITATION
FOR TUESDAY NIGHT AND WEDNESDAY ALONG WITH WINDY CONDITIONS.
&&
.NEAR TERM /THROUGH MONDAY/...
HIGH PRESSURE WILL BRING DRY WEATHER FOR TONIGHT INTO MONDAY
MORNING. A WEAK COLD FRONT WILL BRING A SLIGHT CHANCE OF SNOW
SHOWERS LATE MONDAY AFTERNOON.
&&
.SHORT TERM /MONDAY NIGHT THROUGH TUESDAY/...
A WEAK COLD FRONT MOVING ACROSS THE DISTRICT MONDAY NIGHT WILL
BRING A CHANCE OF SNOW SHOWERS BUT LITTLE OR NO ACCUMULATION.
HIGH PRESSURE WILL BRING DRY WEATHER FOR TUESDAY.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
A STRONG LOW PRESSURE SYSTEM DIGGING TOWARD THE GREAT LAKES BY
WEDNESDAY MORNING WILL BRING WARMER TEMPERATURES BY WEDNESDAY
WITH PERIODS OF RAIN...BUT WITH WINDY CONDITIONS. PRECIPITATION
WILL START AS A WINTRY MIX ON TUESDAY NIGHT BUT TEMPERATURES WILL
RISE AND CHANGE THE PRECIP TO RAIN BY DAYBREAK WEDNESDAY. THE
SYSTEMS COLD FRONT IS THEN PROGGED TO CROSS THE UPPER OHIO
WEDNESDAY NIGHT AND CHANGE REMAINING PRECIP BACK OVER TO SNOW
SHOWERS. THURSDAY WILL BE A COLD AND BLUSTERY DAY LAKE EFFECT SNOW
SHOWERS INTO FRIDAY MORNING.
HIGH PRESSURE SHOULD BUILD OVER THE REGION BY FRIDAY WITH DRY WEATHER
EXPECTED FOR THE WEEKEND.
&&
.AVIATION /21Z SUNDAY THROUGH FRIDAY/...
PREVAILING VFR IS EXPECTED THROUGH THE NIGHT DESPITE INCREASING
HIGH CLOUDINESS WITH THE ADVANCE OF A SHORTWAVE IN SOUTHWEST FLOW.
THAT SYSTEM WILL DRAG A WEAK FRONT ACROSS THE REGION ON MONDAY...BUT
THERE IS LIMITED SUPPORT FOR PRECIP WITH THIS FEATURE. THUS, SUB
VFR POTENTIAL WILL BE LIMITED TO SCATTERED SNOW SHOWERS AND LEFT
OUT OF TAFS FOR NOW.
A RIDGE OF HIGH PRESSURE WILL SLIDE ACROSS TUESDAY WITH PREVAILING
VFR CONTINUING.
WIDESPREAD RESTRICTIONS MAY BE EXPECTED FROM TUESDAY NIGHT THROUGH
THURSDAY...AS A LOW PRESSURE SYSTEM MOVES NORTHEAST THROUGH THE
CENTRAL GREAT LAKES. PRECIPITATION ON THE LEADING EDGE OF THIS
SYSTEM COULD BE IN THE FORM OF A WINTRY MIX OF SLEET/SNOW/FREEZING
RAIN...BEFORE CHANGING TO PRIMARILY RAIN LATE WEDNESDAY MORNING
INTO AFTERNOON. THE ASSOCIATED COLD FRONT WILL SLIDE ACROSS
WEDNESDAY AFTERNOON...CHANGING REMAINING PRECIP OVER TO SNOW
SHOWERS...THROUGH THE DAY THURSDAY. THEREFORE IFR CONDITIONS WILL
BE POSSIBLE ANYTIME FROM TUESDAY NIGHT THROUGH THURSDAY. WITH A
TIGHTENING PRESSURE GRADIENT BEHIND THE COLD FRONT...GUSTY WINDS
ARE EXPECTED FOR WEDNESDAY NIGHT INTO THURSDAY.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.
&&
$$
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