Area Forecast Discussion
Issued by NWS

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
183 FXUS61 KPBZ 051449 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 1049 AM EDT THU MAY 5 2016 .SYNOPSIS... SLOW MOVING LOW PRESSURE WILL KEEP SHOWERS IN THE FORECAST INTO FRIDAY. A COLD FRONT WILL BRING A CHANCE FOR SHOWERS LATER SATURDAY. && .NEAR TERM /THROUGH TONIGHT/...
-- Changed Discussion --
WHILE PRECIPITATION COVERAGE HAS DIMINISHED...PER THE LATEST RADAR DATA...SOME SHOWERS ARE EXPECTED TO BLOSSOM OVER THE REGION THIS AFTERNOON WITH DIURNAL HEATING AND SUPPORT FROM A SHORTWAVE DROPPING INTO THE LARGE UPPER LOW AS IT SINKS TOWARD THE CAROLINAS. SOME DRY AIR WRAPPING AROUND THE LOW HAS ALLOWED FOR BREAKS IN THE CLOUDS EARLY...WHICH MAY SUPPORT POCKETS OF WARMER TEMPERATURES ACROSS THE REGION. HOWEVER...GENERALLY STAYED WITH HIGHS NEAR 60 DEGREES WITH PREDOMINANTLY CLOUDY SKIES AND PRECIPITATION FORECAST. TONIGHT THE LARGE UPPER LOW WILL SETTLE NEAR THE DELMARVA COAST. SHORTWAVE ENERGY ROTATING AROUND THE LOW WILL CONTINUE A CHANCE FOR SHOWERS BUT THE GREATEST PROBABILITIES WILL BE SITUATED SOUTH AND EAST OF I-70/I-79 WHERE THE BETTER UPPER LEVEL SUPPORT AND MOISTURE IS PRESENT.
-- End Changed Discussion --
&& .SHORT TERM /FRIDAY THROUGH SUNDAY/... UPPER LOW WILL BEGIN TO LIFT NORTH FRIDAY KEEPING LIKELY POPS IN THE RIDGES WITH CHANCE POPS BACK TO PITTSBURGH...WITH DRY CONDITIONS EXPECTED ACROSS EASTERN OHIO. CLOSED LOW OPENS AND SHIFTS EAST FRIDAY NIGHT WITH LEFTOVER SHOWERS IN THE RIDGES. STRONG SHORTWAVE DIVING SOUTHEAST FROM CENTRAL CANADA WILL BRING A COLD FRONT INTO THE REGION BY SATURDAY AFTERNOON WITH INCREASING SHOWER CHANCES LATE DAY. TEMPERATURES WILL CONTINUE BELOW AVERAGE THROUGH FRIDAY BUT WARM TO NEAR NORMAL AHEAD OF THE APPROACHING COLD FRONT SATURDAY. && .LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/... A GENERAL SOUTHWEST FLOW PATTERN IS EXPECTED THRU THE PERIOD AHEAD OF AN APPROACHING MIDWEST TROF. SHORTWAVES EMBEDDED IN THE FLOW SHOULD RESULT IN PERIODIC SHOWER CHCS THRU THE PERIOD...WITH A FEW TSTMS PSBL BY MIDWEEK WITH INCREASED MOISTURE AND INSTABILITY PROGGED. TEMPS NEAR SEASONAL LVLS SHOULD INCREASE TO A FEW DEGREES ABOVE AVG BY MIDWEEK. THE SUPERBLEND GUIDANCE...WITH SOME POP ADJUSTMENTS...WAS USED THRU THE PERIOD TO SMOOTH OUT OPERATIONAL MODEL DIFFERENCES/UNCERTAINTY. && .AVIATION /14Z THURSDAY THROUGH MONDAY/... A SWD MOVG UPR LVL LOW OVER NRN KY/SRN OH IS EXPECTED TO RESULT IN AREAS OF SHOWERS ACRS THE RGN TODAY. MAINLY MVFR CONDITIONS ARE EXPECTED WITH THIS PATTERN TODAY. A BRIEF RETURN TO VFR IS PSBL THIS EVE BEFORE LOW LVL MOISTURE RESULTS IN MVFR CIGS OVRNGT. .OUTLOOK /FRIDAY THROUGH MONDAY/... PERIODIC RESTRICTIONS ARE LIKELY THROUGH FRI WITH PERSISTENT LOW PRESSURE...AND AGAIN WITH A SAT NGT COLD FRONT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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