Alert archive / New Jersey / Winter Weather Advisories in 2012
Winter Weather Advisory 10, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Dec 28, 2012, 3:49 AM EST for 4 states. It took effect at Dec 29, 2012, 6:00 AM EST. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Dec 28, 2012, 3:49 AM EST (08:49 UTC)
- In effect from
- Dec 29, 2012, 6:00 AM EST
- Expired
- Dec 29, 2012, 6:33 PM EST
- In force
- 13 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 24 counties
New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 08:48 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 8.8 hours before the alert went out and 202 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 737 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
436 WWUS41 KPHI 280849 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 349 AM EST FRI DEC 28 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-282100- /O.NEW.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 349 AM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW, WHICH IS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY. * SNOW ACCUMULATIONS...2 TO 4 INCHES. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN SOUTHEASTERN PENNSYLVANIA, THEN NORTHEASTWARD TO NORTHERN NEW JERSEY BY MID TO LATE MORNING. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE UPPER 20S TO LOWER 30S. * VISIBILITIES...REDUCED TO AROUND ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES, WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-016>019-PAZ070-071-282100- /O.NEW.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...MEDIA...PHILADELPHIA 349 AM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW, WHICH IS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY. * SNOW ACCUMULATIONS...2 TO 4 INCHES. THERE IS A CHANCE THAT A LITTLE RAIN MIXES IN ACROSS THE FAR SOUTHERN AND EASTERN PORTIONS OF THE ADVISORY AREA, WHICH WOULD CUT DOWN ON THE ACCUMULATIONS SOME. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN NORTHEASTERN MARYLAND AND NORTHERN DELAWARE, THEN NORTHEASTWARD UP THE INTERSTATE 95 AND 295 CORRIDORS BY MID TO LATE MORNING. * IMPACTS...AREAS OF SLOWED TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE LOWER TO MID 30S. * VISIBILITIES...REDUCED TO AROUND ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES, WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ GORSE
8 follow-up statements
771 WWUS41 KPHI 282042 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 342 PM EST FRI DEC 28 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-290900- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 342 PM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN SOUTHEASTERN PENNSYLVANIA... THEN NORTHEASTWARD TO NORTHERN NEW JERSEY BY MID TO LATE MORNING. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE UPPER 20S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-016>019-PAZ070-071-290900- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...MEDIA...PHILADELPHIA 342 PM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... * SNOW ACCUMULATIONS...UP TO 1 INCH. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN NORTHEASTERN MARYLAND AND NORTHERN DELAWARE... THEN NORTHEASTWARD UP THE INTERSTATE 95 AND 295 CORRIDORS BY MID TO LATE MORNING. * IMPACTS...AREAS OF SLOWED TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE LOWER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$
225 WWUS41 KPHI 282104 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 404 PM EST FRI DEC 28 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-290900- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 404 PM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN SOUTHEASTERN PENNSYLVANIA... THEN NORTHEASTWARD TO NORTHERN NEW JERSEY BY MID TO LATE MORNING. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE UPPER 20S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-016>019-PAZ070-071-290900- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...MEDIA...PHILADELPHIA 404 PM EST FRI DEC 28 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM TO 7 PM EST SATURDAY... * SNOW ACCUMULATIONS...1 TO 2 INCHES. * TIMING...SNOW WILL OVERSPREAD THE AREA STARTING NEAR DAYBREAK IN NORTHEASTERN MARYLAND AND NORTHERN DELAWARE... THEN NORTHEASTWARD UP THE INTERSTATE 95 AND 295 CORRIDORS BY MID TO LATE MORNING. * IMPACTS...AREAS OF SLOWED TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE LOWER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$
787 WWUS41 KPHI 290855 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 355 AM EST SAT DEC 29 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-292100- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 355 AM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL OVERSPREAD THE AREA FROM SOUTHWEST TO NORTHEAST BETWEEN ABOUT 7 AM AND 10 AM. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...IN THE UPPER 20S. * VISIBILITIES...AS LOW AS ONE HALF OF A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES, WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-016>019-PAZ070-071-292100- /O.CON.KPHI.WW.Y.0010.121229T1100Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...MEDIA...PHILADELPHIA 355 AM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * SNOW ACCUMULATIONS...1 TO 2 INCHES. SOME RAIN MAY OCCUR IN PARTS OF THIS ADVISORY AREA, HOWEVER A BURST OF SNOW IS ANTICIPATED TO OCCUR THIS MORNING. * TIMING...SNOW WILL OVERSPREAD THE AREA FROM SOUTHWEST TO NORTHEAST BETWEEN ABOUT 7 AM AND 10 AM. * IMPACTS...LOCALLY SLOWED TRAVEL DUE TO SNOW OR SLUSH ON UNTREATED ROADWAYS AND REDUCED VISIBILITY. * TEMPERATURES...IN THE LOWER TO MID 30S. * VISIBILITIES...AS LOW AS AROUND ONE MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES, WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ GORSE
745 WWUS41 KPHI 291732 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1232 PM EST SAT DEC 29 2012 NJZ016>018-291845- /O.CAN.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SALEM-GLOUCESTER-CAMDEN- INCLUDING THE CITIES OF...PENNSVILLE...GLASSBORO...CAMDEN... CHERRY HILL 1232 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE WINTER WEATHER ADVISORY. THE PRECIPITATION HAS CHANGED TO MOSTLY RAIN. NO SIGNIFICANT SNOWFALL IS EXPECTED THE REST OF TODAY. $$ NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 1232 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL CONTINUE THROUGH THE EVENING. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADWAYS THAT ARE NOT TREATED AND REDUCED VISIBILITY. * TEMPERATURES...25 TO 32 DEGREES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-019-PAZ070-071-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... MOORESTOWN...MOUNT HOLLY...MEDIA...PHILADELPHIA 1232 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * SNOW ACCUMULATIONS...UP TO 1 INCH. * TIMING...SNOW AT TIMES MIXED WITH RAIN WILL CONTINUE THROUGH THE EVENING. * IMPACTS...LOCALLY SLOWED TRAVEL DUE TO SNOW OR SLUSH ON UNTREATED ROADWAYS AND REDUCED VISIBILITY. * TEMPERATURES...30 TO 35 DEGREES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$
236 WWUS41 KPHI 291847 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 147 PM EST SAT DEC 29 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 147 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * LOCATIONS...EASTERN PENNSYLVANIA AND THE NORTHWEST HALF OF NEW JERSEY * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL CONTINUE THROUGH THE EVENING. * IMPACTS...AREAS OF VERY HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADS THAT ARE NOT PLOWED OR TREATED AS WELL AS REDUCED VISIBILITY AT TIMES TO NEAR ONE QUARTER MILE. * TEMPERATURES...25 TO 32 DEGREES. * NOWCAST...SNOW...HEAVY AT TIMES CONTINUES ACROSS MUCH OF THIS AREA WITH AMOUNTS AT 145 PM GENERALLY RANGING FROM 1 TO 2.5 INCHES. THE HEAVY SNOW WILL BE DIMINISHING FROM SOUTHWEST TO NORTHEAST BETWEEN 3 PM AND 6 PM AND COMPLETELY TAPERING OFF EARLY THIS EVENING. THE RAIN SNOW LINE WAS NEAR THE INTERSTATE 95 CORRIDOR PUSHING NORTHWARD INTO TRENTON BUT DRIFTING EAST OF WILMINGTON DELAWARE. * OUTLOOK...GUSTY NORTHWEST WINDS SHOULD CAUSE CONSIDERABLE DRIFTING OF THE SNOW SUNDAY MORNING...ESPECIALLY IN NORTHEAST PENNSYLVANIA AND NORTHWEST NEW JERSEYS HIGHER TERRAIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DEZ001-MDZ008-NJZ013-019-PAZ070-071-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... MOORESTOWN...MOUNT HOLLY...MEDIA...PHILADELPHIA 147 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * LOCATIONS...NEAR THE INTERSTATE 95 CORRIDOR FROM WILMINGTON THROUGH THE CITY OF PHILADELPHIA TO NEAR TRENTON. * SNOW ACCUMULATIONS...UP TO 1 INCH. * TIMING...RAIN AND SNOW WILL TREND TO BACK TO ALL SNOW BEFORE DIMINISHING BETWEEN 4 PM AND 6 PM AND THEN END COMPLETELY EARLY THIS EVENING. WHERE ROADS ARE WET DUE TO THE CHANGE TO RAIN...BE PREPARED FOR A POSSIBLE CHANGE TO SLIPPERY STRETCHES OF HIGHWAY AS ONE LAST BURST OF STEADY TO MODERATE SNOW CROSSES THIS REGION DURING MID OR LATE AFTERNOON. * NOWCAST...AT 145 PM THE RAIN SNOW LINE WAS FROM NEAR WILMINGTON DELAWARE TO NORTHEAST PHILADELPHIA TO NEAR TRENTON NEW JERSEY. IT WAS STILL EDGING NORTHWARD TOWARD DOYLESTOWN AND SOMERVILLE BUT PIVOTING EAST OF WILMINGTON. THE RAIN SNOW LINE SHOULD SHIFT SOUTHEAST EVERYWHERE DURING MID OR LATE AFTERNOON. * IMPACTS...LOCALLY SLOWED TRAVEL DUE TO SNOW OR SLUSH ON UNTREATED ROADWAYS AND REDUCED VISIBILITY. * TEMPERATURES...30 TO 35 DEGREES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$
161 WWUS41 KPHI 292005 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 305 PM EST SAT DEC 29 2012 DEZ001-MDZ008-NJZ013-019-PAZ070-071-292115- /O.CAN.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ NEW CASTLE-CECIL-WESTERN MONMOUTH-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...FREEHOLD... MOORESTOWN...MOUNT HOLLY...MEDIA...PHILADELPHIA 305 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE WINTER WEATHER ADVISORY FOR THE INTERSTATE 95 CORRIDOR FROM WILMINGTON TO PHILADELPHIA AND FREEHOLD. THE RAIN IN PROGRESS ACROSS MOST OF THIS AREA SHOULD END AS A MIX OF FLURRIES AND SPRINKLES BETWEEN 5 PM AND 8 PM. THE SNOW IN NORTHWEST CECIL COUNTY MARYLAND WILL BE ENDING BY 4 OR 5 PM. TEMPERATURES WILL FALL BELOW FREEZING LATE TONIGHT AS GUSTY NORTHWEST WINDS DEVELOP. THIS COULD RESULT IN ICY PATCHES NEAR ANY LEFTOVER SNOW ALONG WALKS AND HIGHWAYS. SNOW TOTALS IN THIS AREA EARLIER TODAY RANGED FROM A TRACE TO JUST UNDER 2 INCHES... PRIMARILY CONFINED TO THE AREA JUST WEST OF INTERSTATE 95...INCLUDING PHILADELPHIA'S AND WILMINGTON'S WESTERN AND NORTHERN SUBURBS. $$ NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 305 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * LOCATIONS...EASTERN PENNSYLVANIA AND THE NORTHWEST HALF OF NEW JERSEY * SNOW ACCUMULATIONS...3 TO 5 INCHES. * TIMING...SNOW WILL CONTINUE THROUGH THE EVENING. * IMPACTS...AREAS OF HAZARDOUS TRAVEL DUE TO SNOW COVERED ROADS THAT ARE NOT PLOWED OR TREATED AS WELL AS REDUCED VISIBILITY AT TIMES TO ONE MILE. * TEMPERATURES...25 TO 32 DEGREES. * NOWCAST...THE HEAVIEST OF THE THE SNOWFALL HAS ALREADY OCCURRED. HOWEVER...SNOW...MAY BE VERY BRIEFLY MODERATE ACROSS THIS AREA UNTIL ABOUT 4 OR 5 PM. AMOUNTS AS OF 230 PM GENERALLY RANGED BETWEEN 1.5 AND 3.5 INCHES. SNOW WILL BE TAPERING TO FLURRIES FROM SOUTHWEST TO NORTHEAST BETWEEN 4 PM AND 7 PM AND COMPLETELY END THIS EVENING. THE RAIN SNOW LINE AT 3 PM EXTENDED IN AN ARC FROM NEAR NEWARK NEW JERSEY TO JUST SOUTH OF SOMERVILLE TO JUST SOUTHEAST OF FLEMINGTON TO NEAR WILLOW GROVE AND PHILADELPHIA. IT WAS STILL EDGING NORTHWARD BUT SHOULD SOON HALT ITS NORTHWARD PROGRESS. BY AND LARGE..EVERYONE SEEING SNOW WILL SEE IT END AS SNOW FLURRIES THIS EVENING. * OUTLOOK...GUSTY NORTHWEST WINDS SHOULD CAUSE CONSIDERABLE DRIFTING OF THE SNOW SUNDAY MORNING...ESPECIALLY WHERE AMOUNTS EXCEED 3 INCHES IN EASTERN PENNSYLVANIA AND NORTHWEST NEW JERSEY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DRAG
646 WWUS41 KPHI 292210 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 510 PM EST SAT DEC 29 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-300000- /O.CON.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 510 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * LOCATIONS...EASTERN PENNSYLVANIA AND THE NORTHWEST HALF OF NEW JERSEY * GENERAL SNOW ACCUMULATIONS...3 TO 5 INCHES...ISOLATED 6 INCH AMOUNTS IN EAST CENTRAL PENNSYLVANIA. * TIMING...SNOW HAS TAPERED TO A FEW FLURRIES IN SOUTHEASTERN PENNSYLVANIA AND WILL DO THE SAME FROM THE LEHIGH VALLEY AND THE POCONOS ACROSS THE NORTHWEST PORTION OF NEW JERSEY BETWEEN 6 PM AND 8 PM. * IMPACTS...AREAS OF HAZARDOUS TRAVEL CONTINUE DUE TO SNOW COVERED ROADS THAT WERE NOT PLOWED OR TREATED. * TEMPERATURES...27 TO 32 DEGREES PERMITTING EASIER REMOVAL OF THE SNOW WITHOUT A SHARP FREEZE INTO SLUSH THIS EVENING. * OUTLOOK...GUSTY NORTHWEST WINDS OF 30 TO 40 MPH SHOULD CAUSE CONSIDERABLE DRIFTING OF THE SNOW SUNDAY...ESPECIALLY WHERE AMOUNTS EXCEED 3 INCHES IN EASTERN PENNSYLVANIA AND NORTHWEST NEW JERSEY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES... WHERE SLIPPERY SPOTS TEND TO DEVELOP FIRST. && $$ DRAG
058 WWUS41 KPHI 292333 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 633 PM EST SAT DEC 29 2012 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-300045- /O.CAN.KPHI.WW.Y.0010.000000T0000Z-121230T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...TRENTON...JIM THORPE... STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 633 PM EST SAT DEC 29 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE WINTER WEATHER ADVISORY. SOME LINGERING LIGHT SNOW IS POSSIBLE OVER NORTHERN NEW JERSEY AND NORTHEASTERN PENNSYLVANIA FOR THE NEXT COUPLE OF HOURS. HOWEVER, ANY ADDITIONAL ACCUMULATION WILL BE LIGHT. NEVERTHELESS, WITH TEMPERATURES BELOW FREEZING THERE COULD BE SLICK SPOTS ON ROADWAYS, SO EXERCISE CAUTION WHEN TRAVELING. $$
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this winter weather advisory went out at Dec 28, 12:18 AM EST, 3 hours 31 minutes earlier.
Area forecast discussion, Dec 28, 12:18 AM EST, 3 hours 31 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1218 AM EST FRI DEC 28 2012
.SYNOPSIS...
STRONG LOW PRESSURE REACHES NOVA SCOTIA BY MORNING. WEAKENING
HIGH PRESSURE FOLLOWS FRIDAY. LOW PRESSURE FROM SOUTHERN OHIO TO
THE CAROLINAS EARLY SATURDAY INTENSIFIES RAPIDLY DURING THE DAY
SATURDAY AS IT CONSOLIDATES NORTHEASTWARD OFF THE MID ATLANTIC
COAST. STRONG SOUTHERN STATES HIGH PRESSURE BUILDS IN BRIEFLY
SUNDAY INTO EARLY MONDAY. THE NEXT COLD FRONT SWEEPS ACROSS OUR
REGION MONDAY NIGHT OR TUESDAY. HIGH PRESSURE IN THE CENTRAL
PLAINS THEN BUILDS TOWARD OUR AREA LATER TUESDAY AND WEDNESDAY.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
WINDS ARE STILL CONTINUING THEIR DOWNWARD TREND. DECK OF STRATOCU
ADVECTING IN WITHIN THE CYCLONIC FLOW ALOFT DOES NOT SHOW SIGNS OF
BREAKING UP, AT LEAST NOT FOR THE NEXT FEW HOURS.
WITH THE WINDS STILL ALLOWING FOR THE TURBULENT MIXING AND
OVERCAST SKIES TEMPERATURES AND DEWPOINTS SHOULD CHANGE LITTLE.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/...
FRIDAY FINDS US IN A LULL BETWEEN THE STRONG SYSTEM OVER THE
CANADIAN MARITIMES AND A WEAKER SYSTEM THAT WILL BE DEVELOPING
NEAR THE GULF COAST. WE WILL BE UNDER WEAK HIGH PRESSURE WITH
DIMINISHING WINDS, SEASONABLY COOL TEMPERATURES, DRY CONDITIONS
AND AN UNSTEADY INCREASE IN HIGH CLOUDINESS.
&&
.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
NO WINTER STORM WATCH AT THIS TIME FOR SATURDAY.
WINTER IS HERE WITH REINFORCEMENTS OF COLD AIR OVER AN EXPANDING
AREA OF SNOW COVER THROUGH THE MID ATLANTIC STATES THIS WEEKEND.
YESTERDAYS SIGNIFICANT SNOW AND SLEET ACCUMULATIONS FROM
NORTHEAST PA THROUGH NORTHERN NJ .. ESSENTIALLY ALONG AND N OF I78
WILL MORE EASILY PERMIT NIGHTTIME MINS TO REACH NORMALS AS WE
FINALLY BREAK THE EXCESSIVE WARMTH (AROUND 6 DEGREES ABOVE NORMAL
THROUGH YESTERDAY) THAT HAS CHARACTERIZED DECEMBER 2012.
YESTERDAY WAS THE FIRST DAY OF BELOW NORMAL TEMPS SINCE DECEMBER
6 AT KMPO...AND FOR KABE SINCE DECEMBER 7. OTRW...KPHL IS
CONTINUOUS AOA NORMAL SINCE DEC 6 (20 CONSEC DAYS), KGED AND RDG
CONTINUOUS AOA SINCE DEC 7 (19 CONSEC DAYS).
CALENDAR DAY AVERAGE TEMPERATURES: THE TREND IS DEFINITELY COLDER
WITH LARGE POSITIVE DEPARTURES ANYTIME IN THE NEXT WEEK HIGHLY
UNLIKELY!
500 MB: WSW FLOW TO START FRIDAY NIGHT AHEAD OF A SLOWLY
AMPLIFYING TROUGH HEADING EAST FROM THE MISSISSIPPI VALLEY. THAT
TROUGH CROSSES THE MID ATLANTIC STATES SATURDAY NIGHT AND THEN
SHARPENS RAPIDLY IN ITS DEPARTURE FOR THE MARITIMES SUNDAY. WEAK
RIDGING FOLLOWS HERE BY MONDAY MORNING...THEN A NORTHERN STREAM
NORTHERN PLAINS TROUGH CROSSES THE NORTHEAST STATES TUESDAY WITH
MAYBE ANOTHER NORTHERN STREAM TROUGH TO FOLLOW NEXT THURSDAY.
THERE IS QUITE A BIT OF SPREAD IN THE PATTERN SOLUTIONS FOR THE
UNITED STATES BEGINNING MONDAY NIGHT FORWARD AND THAT INCLUDES
EJECTING AN EVENTUAL POTENTIALLY IMPORTANT LOW PRESSURE SYSTEM IN
THE SOUTHWESTERN UNITED STATES EARLY NEXT WEEK.
THE DAILIES...
FRIDAY NIGHT...INCREASING CLOUDS AHEAD OF THE APPROACHING
MISSISSIPPI VALLEY SHORT WAVE AND SNOW MAY DEVELOP TOWARD DAWN
SATURDAY... ESPECIALLY PHILADELPHIA SOUTH AND WEST.
SATURDAY AND SATURDAY EVENING...DIFFERING PRECIPITATION AMOUNT
SOLUTIONS BUT LITTLE DOUBT THAT IT WILL SNOW OVER MOST OF OUR
FORECAST AREA.
FOR NOW... SINCE THE TIMING OF THE AMPLIFICATION OF THE TROUGH
WILL DICTATE DURATION AND AMOUNTS...WE ARE FORECASTING A GENERAL 6
TO 12 HOUR EVENT WITH WIDESPREAD 2 TO 5 INCH AMOUNTS I95 CORRIDOR
NWWD. SNOW WATER RATIOS AND SFC TEMPS DURING THE DAY DIRECTED A
CONSERVATIVE APPROACH FOR SATURDAYS SNOWFALL AMOUNTS. ITS POSSIBLE
THIS FCST OF HEAVIER SNOW IS TOO FAR NORTHWEST BUT EVEN THE 12Z
ECMWF 2M TEMPS ARE NOT ALL THAT COLD DOWN HERE IN PHL.
NO MATTER...ITS A SHORT DURATION EVENT AND AS I SEE IT NOW...THE
WORST OF THIS SNOW SHOULD BE SATURDAY MORNING BETWEEN 7AM AND NOON
WHEN I CAN SEE WIDESPREAD HAZARDOUS CONDITIONS BEFORE THE
SNOW GROWTH REGION DRIES IN THE AFTN AS THE DECENT OMEGA LOWERS
FROM NEAR 550 MB TO BELOW 700 MB.
SNOW GROWTH MAY ALLOW AN INCH/HOUR FOR AN HOUR OR TWO IN EASTERN
PA AND WESTERN NEW JERSEY SATURDAY MORNING.
SFC TEMPERATURES SHOULD BE WARM ENOUGH IN NE MD AND N DE TO
PERMIT MELTING ON PAVEMENT IN THE AFTERNOON.
SUNDAY...PARTLY CLOUDY AND BLUSTERY. MAYBE A FEW FLURRIES IN THE
NW PORTION OF OUR AREA.
MONDAY...FAIR AND SEASONABLY COLD TO START. MAYBE SOME SNOW
SHOWERS AT NIGHT AHEAD OF THE NEXT COLD FRONT.
TUESDAY...THE GEFS IS CURIOUS IN THAT IT HANGS ONTO A LOW PROB
FOR PCPN..IMPLYING A POSSIBLE COMPLICATION IN THE SMOOTH SEWD
PASSAGE OF THE CFRONT. THE MONDAY NIGHT APPROACHING COLD FRONT MAY
STALL WELL TO OUR SOUTH, AND ENERGY IN THE PLAINS TUESDAY COULD
OPEN THE DOOR FOR OVERRUNNING TO TRY AND WORK NORTHWARD. THIS
COULD RESULT IN A BATTLE BETWEEN THIS FEATURE AND HIGH PRESSURE
STRETCHED EAST TO WEST FROM THE NORTHERN PLAINS TO OHIO VALLEY.
WEDNESDAY...12Z HPC GFS GUIDANCE WHICH IS ESSENTIALLY DRY. MODELS
ARE TENDING TO AGREE THAT WEDNESDAY IS A COLDER THAN NORMAL DAY!
THURSDAY...PCPN POSSIBLE AHEAD OF THE NEXT...WHAT APPEARS TO BE
COMPLEX NORTHERN AND SOUTHERN STREAM TROUGH INTERACTION.
&&
.AVIATION /05Z FRIDAY THROUGH TUESDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY AND SURROUNDING AREAS.
THE WEST-NORTHWEST FLOW HAS SLACKENED A BIT.
THERE IS SOME DRYING TAKING PLACE AND IT SHOULD ALLOW THE CIGS TO
BECOME BROKEN OR SCATTERED ACROSS THE I-95 CORRIDOR NORTH AND WEST
OF PHL. THERE IS STILL PLENTY OF COLD AIR CUMULUS STREAMING IN
FROM THE NORTHWEST. PUSHED BACK THE TIMING OF THE SCATTERING OUT,
BUT EITHER WAY THE CIGS WILL REMAIN VFR TONIGHT.
TOMORROW WILL BE DOMINATED BY HIGH PRESSURE OVERHEAD SO THE WINDS
WILL RELAX EVEN FURTHER AND CONTINUE OUT OF THE WEST-NORTHWEST.
SOME CIRRUS AND ALTOCU WILL BE STREAMING IN AHEAD OF THE NEXT BIG
SYSTEM THAT LOOKS TO AFFECT OUR TERMINALS IN THE EARLY PART OF THE
WEEKEND...VFR UNTIL THEN.
OUTLOOK...
SATURDAY...VFR EARLY, THEN IFR TO BRIEF LIFR CONDS IN SNOW
EXPECTED BY MIDDAY THEN GRADU IMPROVING LATER IN THE DAY OR
EVENING. WHILE THERE IS STILL SOME LOWER CONFIDENCE IN THE DETAILS
WITH A STORM TRACKING TO OUR SOUTH AND EAST, IT DOES APPEAR THAT
THERE IS AN INCREASING CHANCE FOR A PERIOD OF ACCUMULATING SNOW AT
MOST OF OUR TERMINALS....EXCEPT KMIV AND KACY. BECOMING VFR LATE
AT NIGHT. LIGHT WIND MOST OF THIS 24 HOUR PERIOD UNTIL IT BECOMES
GUSTY NW 15 TO 25 KTS LATE SATURDAY NIGHT.
SUNDAY...MAINLY VFR. A FEW FLURRIES OR SNOW SHOWERS COULD BE NEAR
KABE AND KRDG ON SUNDAY. NW GUSTS NEAR 30 KTS DURING THE DAY MUCH
OF THE AREA.
MONDAY...MAINLY VFR. WESTERLY GUSTS TO 20 KTS POSSIBLE. BRIEF
MVFR CONDS IN SNOW SHOWERS POSSIBLE MONDAY NIGHT.
TUESDAY...MAINLY VFR....THOUGH MVFR CONDS POSSIBLE IN A SNOW
SHOWER. NW GUSTS TO 25 KTS POSSIBLE.
&&
.MARINE...
WE MAINTAIN THE GALE WARNING UNTIL 09Z FRIDAY OVER ALL WATERS
EXCEPT THE UPPER BAY WHERE GUSTS HAVE DROPPED BELOW 30 KNOTS. WHEN
THE WARNING EXPIRES, IT WILL BE REPLACED BY AN ADVISORY THAT
LIKELY WILL BE PULLED BY FRIDAY AFTERNOON. SEAS START THE FORECAST
PERIOD BELOW 10 FT OVER THE OCEAN WATERS AND 2 TO 6 FT ACROSS THE
BAY, AND THEY WILL SUBSIDE BELOW THE ADVISORY CRITERION OF 5 FT
FIRST OVER THE BAY (BY DAYBREAK FRIDAY) AND THEN OVER THE ATLANTIC
WATERS (DURING THE DAYLIGHT PORTION OF THE MORNING).
OUTLOOK...
FRIDAY NIGHT THROUGH TUESDAY...
FRIDAY NIGHT AND SATURDAY...NO HEADLINES IN A RELATIVELY QUIET
PERIOD.
SATURDAY NIGHT AND SUNDAY...A PROBABLE SCA SATURDAY NIGHT AND
SUNDAY BEHIND A NORTHEASTWARD DEPARTING INTENSIFYING MID ATLC
COAST LOW PRES PRESSURE SYSTEM. CHANCE OF GALE FORCE GUSTS ON THE
ATLANTIC WATERS SUNDAY.
MONDAY...PROBABLY NO HEADLINE.
TUESDAY...POSSIBLE NW FLOW SCA?
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...GALE WARNING UNTIL 4 AM EST EARLY THIS MORNING FOR ANZ431-
450>455.
SMALL CRAFT ADVISORY UNTIL 4 AM EST EARLY THIS MORNING FOR
ANZ430.
&&
SYNOPSIS...DRAG
NEAR TERM...HEAVENER/IOVINO
SHORT TERM...DELISI
LONG TERM...DRAG
AVIATION...DRAG/HEAVENER/IOVINO
MARINE...DELISI/DRAG/HEAVENERHazardous weather outlook, Dec 27, 9:35 PM EST, 6 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 935 PM EST THU DEC 27 2012 DEZ001-MDZ008-NJZ001-007>010-012>020-027-PAZ054-055-060>062-070-071- 101>106-290245- NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON-DELAWARE-PHILADELPHIA-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- 935 PM EST THU DEC 27 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. HAZARDOUS TRAVEL SHOULD DEVELOP SATURDAY MORNING DUE TO SNOW FOR MUCH OF EASTERN PENNSYLVANIA...WESTERN AND NORTHERN NEW JERSEY AS WELL AS FAR NORTHERN DELAWARE. THE SNOW SHOULD BEGIN NEAR OR SHORTLY AFTER DAYBREAK SATURDAY WITH SNOW TENDING TO DIMINISH DURING THE AFTERNOON OR EVENING. SNOWFALL ACCUMULATIONS ON NON PAVED SURFACES SHOULD RANGE BETWEEN 2 AND 5 INCHES OVER MOST OF THIS AREA... POSSIBLY LESS ALONG THE INTERSTATE 95 CORRIDOR PAVEMENTS WHERE DAYTIME TEMPERATURES WILL BE HOVERING IN THE LOWER TO MID 30S. AT THIS TIME WE THINK THE AXIS OF HEAVIEST SNOWFALL WILL LIE FROM NEAR READING PENNSYLVANIA TO JUST NORTH OF TRENTON NEW JERSEY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ002-MDZ012-015-019-020-NJZ021-022-026-290245- KENT-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-CUMBERLAND-ATLANTIC- COASTAL OCEAN- 935 PM EST THU DEC 27 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHEAST MARYLAND AND SOUTHERN NEW JERSEY. .DAY ONE...TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. RAPIDLY DEVELOPING LOW PRESSURE TO OUR SOUTH AND EAST SATURDAY WILL BRING A PERIOD OF RAIN AND SNOW. THERE IS A CHANCE FOR LIGHT SNOW ACCUMULATIONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ003-004-NJZ023>025-290245- INLAND SUSSEX-DELAWARE BEACHES-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC- 935 PM EST THU DEC 27 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE AND SOUTHERN NEW JERSEY. .DAY ONE...TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. RAPIDLY DEVELOPING LOW PRESSURE TO OUR SOUTH AND EAST SATURDAY WILL BRING A PERIOD OF RAIN AND SNOW. THERE IS A SMALL CHANCE FOR LIGHT SNOW ACCUMULATIONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ431-450>455-290245- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM- COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM- COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM- COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM- 935 PM EST THU DEC 27 2012 ...GALE WARNING IN EFFECT UNTIL 4 AM EST FRIDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. GALE WARNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NORTHWEST WINDS SHOULD REACH GALE FORCE AT TIMES SUNDAY AND POSSIBLY SUNDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-290245- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- 935 PM EST THU DEC 27 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR DELAWARE BAY WATERS. .DAY ONE...TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NORTHWEST WINDS SHOULD REACH GALE FORCE AT TIMES SUNDAY AND POSSIBLY SUNDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 27, 9:36 PM EST | Small Craft Advisory | PHI | 13 hr | |
| Dec 28, 3:40 PM EST | Gale Watch | PHI | 13 hr |
Nearby
Winter Weather Advisories in New Jersey, 2012Winter Weather Advisories in Pennsylvania, 2012Winter Weather Advisories in Maryland, 2012Every winter weather advisory in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.