Weather Briefingfor Pennsylvania* Mid-week Nor’easter *
Prepared by National Weather ServiceState College, PA
11/06/2012 – 1:30 pm([email protected])
Storm Overview
• A Nor’easter will move up the Mid-Atlantic Coast Wednesday into Thursday– Exact forecast track and intensity still show some
uncertainty– Ultimate path and strength will dictate impacts to
the Commonwealth– Greatest impacts appear focused across far
eastern and southeastern Pennsylvania
Wednesday Morning
Storm location Wednesday Morning
Thursday Morning
Storm location Thursday Moring
2 Day Precipitation ForecastTuesday Evening through Thursday Evening
Weather Impacts
• RAIN– Highest rainfall amounts will be in far southeastern
Pennsylvania...with lesser amounts heading to the west and north (may be snow or rain/snow mix in these areas)
• WIND– Strongest in far southeast PA• Possible wind impacts to areas affected by Sandy
– Blustery conditions further inland...but not expected to be damaging
Weather Impacts
• SNOW– Accumulating snow possible mainly along and east
of the Susquehanna River• Highest probability over the higher elevations of the
southern Poconos and Lehigh Valley
Weather Impacts
• Chart depicting probabilities for 2 inches or more of snow accumulation.
Weather Impacts - Summary
• Main impacts of Storm Wednesday and Wednesday Night– Precipitation moves into southeast PA Wednesday morning...spreads north and west during
the day along with increasing winds• Will continue Wednesday Night then taper off Thursday
– Forecasts highly sensitive to exact storm track
• IMPACTS EAST:– Strong winds, rain, some snow potential
• High wind Watches for Chester, Montgomery, Bucks, Delaware and Philadelphia Counties Wednesday morning until Thursday morning
• Could see winds gusting over 40 mph in far southeast Pennsylvania• Wind impacts in some of the same areas affected by Sandy
• IMPACTS CENTRAL:– Some light snow or rain/snow mix possible. Ridges in the east (southern Poconos) could see a several
inch accumulation...lesser elsewhere.– Blustery north winds could gust between 20 and 30 mph
• IMPACTS WEST:– Breezy northwest winds.– Mainly under 20 mph.
Links to local NWS Offices serving PA
• NWS Cleveland– weather.gov/cleveland
• NWS Pittsburgh– weather.gov/pittsburgh
• NWS State College– weather.gov/statecollege
• NWS Binghamton– weather.gov/binghamton
• NWS Mount Holly– weather.gov/philadelphia
Selected PA Cities Forecast Links• PITTSBURGH• http://forecast.weather.gov/MapClick.php?CityName=Pittsburgh&state=PA&site=PBZ&textField1=40.4392&textField2=-79.9767&e=0•
• ERIE• http://forecast.weather.gov/MapClick.php?lat=42.12922409999999&lon=-80.085059&site=all&smap=1&searchresult=Erie%2C%20PA%2C%20USA•
• STATE COLLEGE• http://forecast.weather.gov/MapClick.php?lat=40.7933949&lon=-77.8600012&site=all&smap=1&searchresult=State%20College%2C%20PA%2C%20USA•
• WILKES BARRE• http://forecast.weather.gov/MapClick.php?lat=41.2459149&lon=-75.88130749999999&site=all&smap=1&searchresult=Wilkes-Barre%2C%20PA%2C%20USA•
• WILLIAMSPORT• http://forecast.weather.gov/MapClick.php?lat=41.2411897&lon=-77.00107860000003&site=all&smap=1&searchresult=Williamsport%2C%20PA%2C%20USA•
• READING• http://forecast.weather.gov/MapClick.php?lat=40.3356483&lon=-75.92687469999998&site=all&smap=1&searchresult=Reading%2C%20PA%2C%20USA•
• ALLENTOWN• http://forecast.weather.gov/MapClick.php?lat=40.6084305&lon=-75.49018330000001&site=all&smap=1&searchresult=Allentown%2C%20PA%2C%20USA•
• HARRISBURG• http://forecast.weather.gov/MapClick.php?lat=40.2737002&lon=-76.88441790000002&site=all&smap=1&searchresult=Harrisburg%2C%20PA%2C%20USA•
• PHILADELPHIA• http://forecast.weather.gov/MapClick.php?lat=39.952335&lon=-75.16378900000001&site=all&smap=1&searchresult=Philadelphia%2C%20PA%2C%20USA
Useful Web Links
• Emergency Managers’ Briefing Page:– http://www.erh.noaa.gov/ctp/pema/briefing.php
• AHPS Page:– http://water.weather.gov/ahps/
• Need to zoom in on your specific area
• PEMA River Monitor page– http://www.erh.noaa.gov/er/ctp/pema/
• NOAA / NWS Hurricane Preparedness– Hazards: http://www.nhc.noaa.gov/prepare/hazards.php– Watches/Warnings: http://
www.nhc.noaa.gov/prepare/wwa.php– Be Ready: http://www.nhc.noaa.gov/prepare/ready.php