Alert archive / Pennsylvania / Winter Storm Watches in 2011
Winter Storm Watch 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter storm watch at Mar 22, 2011, 3:48 AM EDT for Morris County, Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania. It took effect at Mar 23, 2011, 2:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 22, 2011, 3:48 AM EDT (07:48 UTC)
- In effect from
- Mar 23, 2011, 2:00 AM EDT
- Expired
- Mar 22, 2011, 3:35 PM EDT
- In force
- Issued by
- NWS Philadelphia/Mount Holly
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 122 km from the middle of the area, began a volume at 07:49 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, 7.8 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
- 2 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 452 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
888 WWUS41 KPHI 220748 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 348 AM EDT TUE MAR 22 2011 NJZ001-007-008-PAZ054-055-060>062-222100- /O.NEW.KPHI.WS.A.0006.110323T0600Z-110324T0800Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM... EASTON 348 AM EDT TUE MAR 22 2011 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT. * LOCATIONS...THE LEHIGH VALLEY AND SOUTHERN POCONOS IN EASTERN PENNSYLVANIA AND NORTHWEST NEW JERSEY. * HAZARD TYPES...MAINLY SNOW. SOME SLEET OR FREEZING RAIN COULD MIX WITH THE SNOW WEDNESDAY AFTERNOON AND EVENING. * ACCUMULATIONS...4 TO 8 INCHES OF SNOW. * TIMING...THE SNOW WILL BEGIN DURING THE EARLY MORNING HOURS OF WEDNESDAY. THE SNOW WILL FALL WITH VARYING INTENSITY DURING WEDNESDAY INTO WEDNESDAY EVENING. THE SNOW SHOULD TAPER OFF LATE WEDNESDAY NIGHT OR EARLY THURSDAY MORNING. * IMPACTS...THE WEDNESDAY MORNING COMMUTE WILL BE AFFECTED AS SNOW WILL BE FALLING AND UNTREATED ROADS WILL BE SLICK AND SNOW COVERED. THE WEDNESDAY EVENING COMMUTE COULD BE AFFECTED MORE SIGNIFICANTLY AS SNOW ACCUMULATIONS COULD REACH NEAR 6 INCHES IN PLACES BY WEDNESDAY EVENING. * WINDS...NORTHEAST 5 TO 10 MPH. * TEMPERATURES...IN THE LOWER 30S. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ HAYES
2 follow-up statements
886 WWUS41 KPHI 221016 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 616 AM EDT TUE MAR 22 2011 NJZ001-007-008-PAZ054-055-060>062-222100- /O.CON.KPHI.WS.A.0006.110323T0600Z-110324T0800Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM... EASTON 616 AM EDT TUE MAR 22 2011 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT... A WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT. * LOCATIONS...THE LEHIGH VALLEY AND SOUTHERN POCONOS IN EASTERN PENNSYLVANIA AND NORTHWEST NEW JERSEY. * HAZARD TYPES...MAINLY SNOW. SOME SLEET OR FREEZING RAIN COULD MIX WITH THE SNOW WEDNESDAY AFTERNOON AND EVENING. * ACCUMULATIONS...4 TO 8 INCHES OF SNOW. * TIMING...THE SNOW WILL BEGIN DURING THE EARLY MORNING HOURS OF WEDNESDAY. THE SNOW WILL FALL WITH VARYING INTENSITY DURING WEDNESDAY INTO WEDNESDAY EVENING. THE SNOW SHOULD TAPER OFF LATE WEDNESDAY NIGHT OR EARLY THURSDAY MORNING. * IMPACTS...THE WEDNESDAY MORNING COMMUTE WILL BE AFFECTED AS SNOW WILL BE FALLING AND UNTREATED ROADS WILL BE SLICK AND SNOW COVERED. THE WEDNESDAY EVENING COMMUTE COULD BE AFFECTED MORE SIGNIFICANTLY AS SNOW ACCUMULATIONS COULD REACH NEAR 6 INCHES IN PLACES BY WEDNESDAY EVENING. * WINDS...NORTHEAST 5 TO 10 MPH. * TEMPERATURES...IN THE LOWER 30S. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
526 WWUS41 KPHI 221935 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 335 PM EDT TUE MAR 22 2011 NJZ001-PAZ054-055-231000- /O.UPG.KPHI.WS.A.0006.110323T0600Z-110324T0800Z/ /O.NEW.KPHI.WS.W.0008.110323T0600Z-110324T1000Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 335 PM EDT TUE MAR 22 2011 ...WINTER STORM WARNING IN EFFECT FROM 2 AM WEDNESDAY TO 6 AM EDT THURSDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT FROM 2 AM WEDNESDAY TO 6 AM EDT THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...CARBON AND MONROE COUNTIES IN PENNSYLVANIA AND SUSSEX COUNTY IN NEW JERSEY. * HAZARD TYPES...MAINLY SNOW WITH SLEET MIXING IN AT TIMES. * ACCUMULATIONS...4 TO 10 INCHES OF SNOW. * TIMING...SNOW IS EXPECTED TO BEGIN OVERNIGHT TONIGHT INTO EARLY WEDNESDAY MORNING AND CONTINUE THROUGH WEDNESDAY NIGHT, BEFORE TAPERING OFF THURSDAY MORNING. SLEET MAY PERIODICALLY MIX WITH SNOW, ESPECIALLY DURING THE DAY WEDNESDAY. * IMPACTS...THE WEDNESDAY MORNING COMMUTE IS EXPECTED TO BE AFFECTED BY SNOW AND POSSIBLY SLEET. SNOW AND SLEET ACCUMULATIONS WILL INCREASE THROUGH THE DAY AND INTO THE EVENING COMMUTE, WITH TOTALS REACHING BETWEEN 4 AND 10 INCHES. THE GREATEST IMPACTS WILL BE IN THE HIGHEST ELEVATIONS, AS WELL AS UNTREATED AND SECONDARY ROADS. * WINDS...NORTHEAST 5 TO 10 MPH. * TEMPERATURES...AROUND 30. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ NJZ007-008-PAZ061-062-231000- /O.UPG.KPHI.WS.A.0006.110323T0600Z-110324T0800Z/ /O.NEW.KPHI.WW.Y.0017.110323T0600Z-110324T1000Z/ WARREN-MORRIS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...ALLENTOWN... BETHLEHEM...EASTON 335 PM EDT TUE MAR 22 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM WEDNESDAY TO 6 AM EDT THURSDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY...WHICH IS IN EFFECT FROM 2 AM WEDNESDAY TO 6 AM EDT THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...WARREN AND MORRIS COUNTIES IN NEW JERSEY, AND LEHIGH AND NORTHAMPTON COUNTIES IN PENNSYLVANIA. * HAZARD TYPES...SNOW AND SLEET. * ACCUMULATIONS...3 TO 7 INCHES OF SNOW AND SLEET. * TIMING...PRECIPITATION IS EXPECTED TO BEGIN OVERNIGHT TONIGHT INTO EARLY WEDNESDAY MORNING AND CONTINUE THROUGH WEDNESDAY NIGHT, BEFORE TAPERING OFF THURSDAY MORNING. PRECIPITATION IS EXPECTED TO BEGIN AS RAIN OR A RAIN AND SNOW MIXTURE, BEFORE CHANGING TO SNOW, OR A SNOW AND SLEET MIXTURE DURING THE DAY WEDNESDAY. * IMPACTS...THE WEDNESDAY MORNING COMMUTE IS EXPECTED TO BE AFFECTED BY A WINTRY MIXTURE OF RAIN AND SNOW. PRECIPITATION WILL CHANGE TO SNOW AT TIMES WHEN THE PRECIPITATION BECOMES HEAVIER. THE SNOW AND SLEET MAY HAVE A DIFFICULT TIME ACCUMULATING IN THE MIDDLE OF THE DAY WEDNESDAY. SNOW AND SLEET ACCUMULATIONS WILL INCREASE AGAIN TOWARD THE EVENING COMMUTE, WITH TOTALS REACHING BETWEEN 3 AND 7 INCHES. THE GREATEST IMPACTS WILL BE IN THE HIGHEST ELEVATIONS, AS WELL AS UNTREATED AND SECONDARY ROADS. * WINDS...NORTHEAST 5 TO 10 MPH. * TEMPERATURES...IN THE LOWER TO MID 30S. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ PAZ060-231000- /O.UPG.KPHI.WS.A.0006.110323T0600Z-110324T0800Z/ /O.NEW.KPHI.WW.Y.0017.110323T0600Z-110323T1500Z/ BERKS- INCLUDING THE CITY OF...READING 335 PM EDT TUE MAR 22 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 11 AM EDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 11 AM EDT WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...BERKS COUNTY IN PENNSYLVANIA * HAZARD TYPES...SNOW AND SLEET * ACCUMULATIONS...1 TO 3 INCHES OF SNOW AND SLEET THROUGH THE MORNING COMMUTE. * TIMING...PRECIPITATION IS EXPECTED TO BEGIN OVERNIGHT TONIGHT INTO EARLY WEDNESDAY MORNING AND CONTINUE THROUGH WEDNESDAY NIGHT, BEFORE TAPERING OFF THURSDAY MORNING. PRECIPITATION IS EXPECTED TO BEGIN AS RAIN, OR A RAIN AND SNOW MIXTURE, BEFORE CHANGING TO SNOW AND SLEET DURING THE MORNING COMMUTE HOURS. PRECIPITATION MAY CHANGE BACK TO RAIN DURING THE DAY WEDNESDAY. * IMPACTS...THE WEDNESDAY MORNING COMMUTE IS EXPECTED TO BE AFFECTED BY A WINTRY MIXTURE OF RAIN AND SNOW. PRECIPITATION IS EXPECTED TO CHANGE TO RAIN DURING THE DAY WEDNESDAY. THE GREATEST IMPACTS WILL BE IN THE HIGHEST ELEVATIONS, AS WELL AS UNTREATED AND SECONDARY ROADS. * WINDS...NORTHEAST 5 TO 10 MPH. * TEMPERATURES...IN THE MID 30S. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ NJZ009-010-PAZ069-231000- /O.NEW.KPHI.WW.Y.0017.110323T0600Z-110323T1500Z/ HUNTERDON-SOMERSET-BUCKS- INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...DOYLESTOWN 335 PM EDT TUE MAR 22 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 11 AM EDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 11 AM EDT WEDNESDAY. * LOCATIONS...HUNTERDON AND SOMERSET COUNTIES IN NEW JERSEY AND BUCKS COUNTY IN PENNSYLVANIA. * HAZARD TYPES...SNOW AND SLEET * ACCUMULATIONS...1 TO 3 INCHES OF SNOW. * TIMING...PRECIPITATION IS EXPECTED TO BEGIN OVERNIGHT TONIGHT INTO EARLY WEDNESDAY MORNING AND CONTINUE THROUGH WEDNESDAY NIGHT, BEFORE TAPERING OFF THURSDAY MORNING. PRECIPITATION IS EXPECTED TO BEGIN AS RAIN, OR A RAIN AND SNOW MIXTURE, BEFORE CHANGING TO SNOW AND SLEET DURING THE MORNING COMMUTE HOURS. PRECIPITATION MAY CHANGE BACK TO RAIN DURING THE DAY WEDNESDAY. * IMPACTS...THE WEDNESDAY MORNING COMMUTE IS EXPECTED TO BE AFFECTED BY A WINTRY MIXTURE OF RAIN AND SNOW. PRECIPITATION IS EXPECTED TO CHANGE TO RAIN DURING THE DAY WEDNESDAY. THE GREATEST IMPACTS WILL BE IN THE HIGHEST ELEVATIONS IN THE NORTHERN PORTIONS OF THE COUNTIES, AS WELL AS UNTREATED AND SECONDARY ROADS. * WINDS...NORTHEAST UP TO 5 MPH. * TEMPERATURES...IN THE MID 30S. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ ROBERTSON/TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 3:35 PM EDT | Winter Storm Warning | PHI | Morris, Sussex, Warren | 36 hr |
| Mar 22, 3:35 PM EDT | Winter Weather Advisory | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Warren | 19 hr |
Nearby
Winter Storm Watches in Pennsylvania, 2011Winter Storm Watches in New Jersey, 2011Every winter storm watch in 2011
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.