FXUS61 KPBZ 290653
AFDPBZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
153 AM EST SUN NOV 29 2009
.SYNOPSIS...
A COLD FRONT COMING FROM WISCONSIN WILL BRING RAIN SHOWERS LATE SUNDAY
AND MONDAY WITH POSSIBLY LIGHT SNOW SHOWERS LATE MONDAY NIGHT.
&&
.NEAR TERM /THROUGH TONIGHT/...
HIGH PRESSURE ACROSS THE DISTRICT TODAY WILL BRING FAIR SKIES
AND DRY WEATHER. A COLD FRONT PUSHING ACROSS OHIO TONIGHT WILL BRING
INCREASING CLOUDINESS TONIGHT ALONG WITH A CHANCE OF RAIN SHOWERS.
&&
.SHORT TERM /MONDAY THROUGH MONDAY NIGHT/...
THE COLD FRONT PUSHES EAST OF THE FORECAST AREA BY MONDAY
AFTERNOON WITH COLDER TEMPERATURES MOVING IN BEHIND THE FRONT.
POST FRONTAL NORTHWEST WINDS WILL PROVIDE SUFFICIENT LAKE ENHANCED
INSTABILITY TO MAINTAIN SCATTERED RAIN SHOWERS MONDAY AFTERNOON
AND EVENING...AND WITH TEMPERATURES COOLING INTO THE LOWER
30S...PERHAPS SCATTERED SNOW SHOWERS MONDAY NIGHT INTO TUESDAY
MORNING.
&&
.LONG TERM /TUESDAY THROUGH SATURDAY/...
HIGH PRESSURE BUILDING INTO THE DISTRICT TUESDAY WILL BRING DRY
WEATHER AND MODERATING TEMPERATURES. A RAPIDLY MOVING COLD FRONT
IN THE NORTHERN STREAM OF THE SPLIT FLOW ACROSS THE U.S. PUSHES
ACROSS THE DISTRICT WEDNESDAY BRINGING A RISK OF SHOWERS AND MUCH
COLDER TEMPERATURES FOR THURSDAY AND FRIDAY. RAIN SHOWERS WEDNESDAY
NIGHT BEHIND THE FRONT WILL CHANGE TO SNOW SHOWERS THURSDAY MORNING.
LAKE EFFECT SNOW SHOWERS CAN BE EXPECTED THURSDAY AND FRIDAY IN
THE BRISK NORTHWEST FLOW. HIGH PRESSURE WILL BRING DRY WEATHER FOR
SATURDAY ALONG WITH MODERATING TEMPERATURES.
&&
.AVIATION /07Z SUNDAY THROUGH THURSDAY/...
WITH STRONG WARM ADVECTION BUILDING IN FOR SUNDAY...A LOW LEVEL
INVERSION WILL SETUP EARLY THIS MORNING...LEADING TO THE POTENTIAL
FOR LLWS. OTHERWISE...VFR CONDITIONS ARE EXPECTED TODAY.
A COLD FRONT WILL CROSS AREA TERMINALS FROM NORTHWEST TO SOUTHEAST
TONIGHT...WITH REDUCED CONDITIONS INTO THE MVFR RANGE EXPECTED. A
BRIEF PERIOD OF IFR IN RAIN SHOWERS WILL ALSO BE POSSIBLE TONIGHT.
PREVAILING MVFR IS EXPECTED TO CONTINUE MONDAY IN POST FRONTAL RAIN
SHOWERS...WITH CONDITIONS DETERIORATING TOWARD IFR BY MONDAY
NIGHT...AS RAIN CHANGES TO SNOW.
A RIDGE OF HIGH PRESSURE WILL PROVIDE FOR PREVAILING VFR TUESDAY
AFTERNOON...AND CONTINUE THROUGH TUESDAY NIGHT. THE NEXT CHANCE FOR
REDUCED CONDITIONS WILL THEN COME WEDNESDAY AFTERNOON THROUGH
THURSDAY...AS A LOW PRESSURE SYSTEM TRACKS UP THE EAST COAST.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.
&&
$$
