981
FXUS61 KPBZ 040733
AFDPBZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
333 AM EDT SAT JUL 4 2009
SYNOPSIS
LOW PRESSURE OVER THE CENTRAL PLAINS STATES WILL MOVE EAST TO THE
APPALACHIANS SUNDAY WITH A CHANCE OF SHOWERS MAINLY TOWARD THE
MASON DIXON LINE. LINGERING SHOWERS WILL END OVER THE RIDGES
SUNDAY WITH DRY AND MILD CONDITIONS INTO MID WEEK.
NEAR TERM /THROUGH TONIGHT/
UPPER LEVEL LOW LIFTING NORTHEAST FROM NEW ENGLAND WILL LEAVE
NORTHWEST FLOW ALOFT IN ITS WAKE WITH A SHORTWAVE AND LOW PRESSURE
OVER KANSAS MOVING EAST SOUTHEAST TONIGHT AND SUNDAY. BULK OF
DEEPER MOISTURE AND LIFT WILL BE WELL SOUTH OF CWA WITH EXTREME
SOUTHERN CWA ON NORTHERN FRINGE OF PRECIPITATION. BEST CHANCE FOR
ANY SHOWERS WILL BE LATER TONIGHT AND SUNDAY MORNING ACROSS
EXTREME SOUTH AND SOUTHEAST RIDGES. TEMPERATURES TO REMAIN BELOW
NORMAL.
SHORT TERM /SUNDAY THROUGH TUESDAY/
LEFTOVER SHOWERS OVER SOUTHEAST AND RIDGES WILL DIMINISH SUNDAY AS
LOW PRESSURE EXITS EAST. NEXT UPPER TROUGH WILL MOVE ACROSS NEW
ENGLAND MONDAY INTO TUESDAY AND BARELY CLIP CWA WITH JUST A SLIGHT
CHANCE FOR A SHOWER MAINLY NORTH AND RIDGES. TEMPERATURES TO
REMAIN BELOW NORMAL.
LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/
HEIGHTS WILL RISE THROUGH THE PERIOD AS FLOW BECOMES MORE ZONAL
MID WEEK FOLLOWED BY AN UPPER LEVEL RIDGE ATTEMPTING TO BUILD EAST
BY LATE WEEK. TEMPERATURES WILL MOVE TO NORMAL THEN ABOVE NORMAL
BY FRIDAY. DEEP MOISTURE WILL BE LIMITED WITH NO POPS IN FORECAST.
AVIATION /07Z SATURDAY THROUGH WEDNESDAY/
UPPER LOW CONTINUES TO LIFT NORTHEAST. CURRENTLY, MID-DECK AND SOME
CU NORTH TO SOUTH ACROSS TERMINALS. THIS DECK SHOULD WANE OVERNIGHT
AS NEXT SYSTEM WITH HIGH CLOUDS APPROACHES BY 18Z-20Z OR SO. DEW POINT
DEPRESSION DROPS TO 2 DEGREES OR LESS FEW TERMINALS AND INSERTED
SOME FOG...ONLY 4-5SM. EXPECT SCT015-SCT020 DECK TOWARD MORNING.
WENT BKN010-015 FKL-DUJ BY 08-09Z. HOWEVER DECK SHOULD LIFT QUICKLY.
WEAK SURFACE RIDGE IN PLACE AS NEXT SYSTEM APPROACHES LATER TODAY.
MOST TERMINALS ONLY MID-DECK AND HIGH CLOUDS BKN-OVC BY 00Z. HOWEVER
BROUGHT IN BKN CU ZZV IN ANTICIPATION OF POSSIBLE SHOWERS IN VCNTY
OF ZZV LATER PART OF THIS FORECAST PERIOD (THIS EVENING). WINDS
LIGHT TONIGHT AND WEST UP TO 10KTS (MAINLY BELOW) ON SATURDAY.
EARLY SUNDAY, NEXT SYSTEM TO SPREAD MOISTURE GENERALLY TO OUR SOUTH.
LOW PRESSURE OVER KY SHOULD SLIDE DIRECTLY EAST. COULD PRODUCE SOME
SHOWERS MGW-ZZV (WITH POSSIBLE MVFR) BUT GENERALLY VFR CONDITIONS
THROUGH SUNDAY INTO MONDAY.
HIGH PRESSURE SHOULD BE IN CONTROL TOWARD MIDWEEK WITH GENERAL VFR
CONDITIONS.
PBZ WATCHES/WARNINGS/ADVISORIES
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page