Alert archive / Pennsylvania / Winter Storm Watches in 2011
Winter Storm Watch 8, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter storm watch at Oct 27, 2011, 3:15 PM EDT for Morris County, Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania. It took effect at Oct 29, 2011, 8:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Oct 27, 2011, 3:15 PM EDT (19:15 UTC)
- In effect from
- Oct 29, 2011, 8:00 AM EDT
- Expired
- Oct 28, 2011, 3:52 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 19:17 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.3 hours before the alert went out and 167 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
- 842 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
844 WWUS41 KPHI 271915 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 315 PM EDT THU OCT 27 2011 ...WINTRY WEATHER IS EXPECTED SATURDAY INTO SATURDAY EVENING... .AN EARLY SEASON COASTAL STORM WILL CAUSE POTENTIALLY HEAVY SNOW ACCUMULATIONS. NJZ001-007-008-PAZ054-055-060>062-280900- /O.NEW.KPHI.WS.A.0008.111029T1200Z-111030T0400Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM... EASTON 315 PM EDT THU OCT 27 2011 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING. * LOCATIONS...THE SOUTHERN POCONOS...THE LEHIGH VALLEY...BERKS COUNTY...AND NORTHWESTERN NEW JERSEY. * HAZARD TYPES...HEAVY SNOW. * ACCUMULATIONS...POTENTIALLY 4 TO 6 INCHES OF SNOW...WITH THE HIGHEST AMOUNTS OVER THE HIGHER ELEVATIONS. * TIMING...SATURDAY MORNING INTO SATURDAY EVENING. * IMPACTS...IMPAIRED TRAVEL...AND ISOLATED DOWNED TREES AND LIMBS WHICH MAY CAUSE LOCALIZED POWER OUTAGES. * WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 20 MPH. * TEMPERATURES...IN THE MID 30S. * VISIBILITIES...1/2 TO 1 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. && $$
3 follow-up statements
867 WWUS41 KPHI 280745 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 345 AM EDT FRI OCT 28 2011 ...WINTRY WEATHER IS EXPECTED SATURDAY INTO SATURDAY EVENING... .AN EARLY SEASON COASTAL STORM WILL CAUSE POTENTIALLY HEAVY SNOW ACCUMULATIONS. NJZ001-007-008-PAZ054-055-060>062-281600- /O.CON.KPHI.WS.A.0008.111029T1200Z-111030T0400Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM... EASTON 345 AM EDT FRI OCT 28 2011 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... * LOCATIONS...THE SOUTHERN POCONOS...THE LEHIGH VALLEY...BERKS COUNTY...AND NORTHWESTERN NEW JERSEY. * HAZARD TYPES...HEAVY SNOW. * ACCUMULATIONS...6 TO 10 INCHES OF SNOW. * TIMING...SATURDAY MORNING INTO SATURDAY EVENING. * IMPACTS...IMPAIRED TRAVEL. TREES WHICH STILL HAVE LEAVES ON THEM WILL BECOME LOADED WITH WET SNOW AND HAVE LIMBS BREAK OFF THEM. POWER OUTAGES WILL RESULT. PREPARE FOR LOSS OF POWER. * WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 20 MPH. * TEMPERATURES...IN THE LOW TO MID 30S. * VISIBILITIES...1/2 TO 1 MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
322 WWUS41 KPHI 281509 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1109 AM EDT FRI OCT 28 2011 ...WINTRY WEATHER IS EXPECTED SATURDAY INTO SATURDAY EVENING... .AN EARLY SEASON COASTAL STORM WILL CAUSE POTENTIALLY HEAVY SNOW ACCUMULATIONS. NJZ001-007-008-PAZ054-055-060>062-282315- /O.CON.KPHI.WS.A.0008.111029T1200Z-111030T0400Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM... EASTON 1109 AM EDT FRI OCT 28 2011 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... * LOCATIONS...THE SOUTHERN POCONOS...THE LEHIGH VALLEY...BERKS COUNTY...AND NORTHWESTERN NEW JERSEY. * HAZARD TYPES...HEAVY SNOW. * ACCUMULATIONS...6 TO 10 INCHES OF SNOW. HIGHER AMOUNTS POSSIBLE ON GRASSY SURFACES. * TIMING...SATURDAY MORNING INTO SATURDAY EVENING. * IMPACTS...IMPAIRED TRAVEL. TREES WHICH STILL HAVE LEAVES ON THEM WILL BECOME LOADED WITH WET SNOW AND HAVE LIMBS BREAK OFF THEM. POWER OUTAGES WILL RESULT. PREPARE FOR LOSS OF POWER. * WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 20 MPH. * TEMPERATURES...IN THE LOW TO MID 30S. * VISIBILITIES...1/2 TO 1 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. && $$ KRUZDLO
855 WWUS41 KPHI 281952 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 352 PM EDT FRI OCT 28 2011 ...AN EARLY SEASON WINTER STORM WILL SIGNIFICANTLY IMPACT THE REGION... .AN AREA OF LOW PRESSURE DEVELOPING NEAR THE SOUTHEAST UNITED STATES COAST TONIGHT WILL INTENSIFY AND TRACK UP THE EAST COAST SATURDAY. THIS WILL BRING A SWATCH OF HEAVY WET, AND POTENTIALLY DAMAGING, SNOW TO A DECENT PORTION OF THE REGION ON SATURDAY. THE STORM IS EXPECTED TO END AND MOVE AWAY FROM OUR AREA SATURDAY NIGHT. THE HIGHER ACCUMULATIONS OF HEAVY WET SNOW SHOULD BE ACROSS THE HIGHER ELEVATIONS AND ON NON-PAVED SURFACES. IF THE SNOW FALLS AT A HEAVY RATE, THIS WILL TEND TO INCREASE THE EFFICIENCY OF IT STICKING TO ALL SURFACES. NJZ001-PAZ054-055-291000- /O.UPG.KPHI.WS.A.0008.111029T1200Z-111030T0400Z/ /O.NEW.KPHI.WS.W.0010.111029T0600Z-111030T0600Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 352 PM EDT FRI OCT 28 2011 ...WINTER STORM WARNING IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WARNING FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * ACCUMULATIONS...8 TO 14 INCHES. THE HIGHEST AMOUNTS ESPECIALLY ACROSS THE HIGHER ELEVATIONS AND ON NON-PAVED SURFACES. * TIMING...SNOW WILL OVERSPREAD THE REGION AFTER MIDNIGHT TONIGHT AND CONTINUE DURING SATURDAY. THE SNOW COULD MIX WITH OR EVEN START AS LIGHT RAIN BRIEFLY AT THE ONSET. * IMPACTS...HAZARDOUS TRAVEL DEVELOPING, AND THE HEAVY WET SNOW WILL LIKELY WEIGH DOWN TREES WHICH STILL HAVE SOME LEAVES ON THEM. THIS WILL LEAD TO DOWNED TREES AND POWER OUTAGES. THE WET SNOW MAY FALL HEAVY AT TIMES DURING THE HEIGHT OF THE STORM, LOCALLY INCREASING THE ACCUMULATION RATE. * WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TEMPERATURES...IN THE LOWER TO MID 30S, BUT THEN DROPPING INTO THE UPPER 20S SATURDAY NIGHT. * VISIBILITIES...REDUCED TO WELL UNDER A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED. GUSTY WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ NJZ007-008-PAZ060>062-291000- /O.UPG.KPHI.WS.A.0008.111029T1200Z-111030T0400Z/ /O.NEW.KPHI.WS.W.0010.111029T0600Z-111030T0600Z/ WARREN-MORRIS-BERKS-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...READING... ALLENTOWN...BETHLEHEM...EASTON 352 PM EDT FRI OCT 28 2011 ...WINTER STORM WARNING IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WARNING FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * ACCUMULATIONS...6 TO 10 INCHES. THE HIGHEST AMOUNTS ESPECIALLY ACROSS THE HIGHER ELEVATIONS AND ON NON-PAVED SURFACES. * TIMING...RAIN AND SNOW WILL OVERSPREAD THE REGION AFTER MIDNIGHT TONIGHT, THEN CHANGE TO ALL SNOW DURING SATURDAY MORNING. * IMPACTS...HAZARDOUS TRAVEL DEVELOPING, AND THE HEAVY WET SNOW WILL LIKELY WEIGH DOWN TREES WHICH STILL HAVE LEAVES ON THEM. THIS WILL LEAD TO DOWNED TREES AND POWER OUTAGES. THE WET SNOW MAY FALL HEAVY AT TIMES DURING THE HEIGHT OF THE STORM, LOCALLY INCREASING THE ACCUMULATION RATE. * WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TEMPERATURES...IN THE MID TO UPPER 30S, THEN DROPPING TO NEAR FREEZING SATURDAY NIGHT. * VISIBILITIES...REDUCED TO WELL UNDER A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED. GUSTY WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ NJZ009-010-PAZ067>069-291000- /O.NEW.KPHI.WS.W.0010.111029T1200Z-111030T0600Z/ HUNTERDON-SOMERSET-CHESTER-MONTGOMERY-BUCKS- INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE... WEST CHESTER...NORRISTOWN...DOYLESTOWN 352 PM EDT FRI OCT 28 2011 ...WINTER STORM WARNING IN EFFECT FROM 8 AM SATURDAY TO 2 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WARNING FOR HEAVY WET SNOW...WHICH IS IN EFFECT FROM 8 AM SATURDAY TO 2 AM EDT SUNDAY. * ACCUMULATIONS...2 TO 6 INCHES. THE HIGHEST AMOUNTS MAINLY ACROSS THE HIGHER ELEVATIONS AND ON NON-PAVED SURFACES. * TIMING...RAIN WILL DEVELOP AFTER MIDNIGHT TONIGHT, THEN MIX WITH AND CHANGE TO WET SNOW DURING SATURDAY MORNING. * IMPACTS...HAZARDOUS TRAVEL DEVELOPING, AND THE HEAVY WET SNOW WILL LIKELY WEIGH DOWN TREES WHICH STILL HAVE LEAVES ON THEM. THIS WILL LEAD TO SOME DOWNED TREES AND POWER OUTAGES. THE WET SNOW MAY FALL HEAVY AT TIMES DURING THE HEIGHT OF THE STORM, LOCALLY INCREASING THE ACCUMULATION RATE. * WINDS...NORTH 15 TO 25 MPH WITH GUSTS UP TO 30 MPH. * TEMPERATURES...IN THE UPPER 30S TO LOWER 40S, BUT THEN DROPPING TO NEAR FREEZING SATURDAY NIGHT. * VISIBILITIES...REDUCED TO WELL UNDER A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS. && $$ DEZ001-MDZ008-NJZ012-013-015>019-PAZ070-071-291000- /O.NEW.KPHI.WW.Y.0022.111029T1600Z-111030T0600Z/ NEW CASTLE-CECIL-MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM- GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEW BRUNSWICK... FREEHOLD...TRENTON...PENNSVILLE...GLASSBORO...CAMDEN... CHERRY HILL...MOORESTOWN...MOUNT HOLLY...MEDIA...PHILADELPHIA 352 PM EDT FRI OCT 28 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON SATURDAY TO 2 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER WEATHER ADVISORY FOR RAIN CHANGING TO HEAVY WET SNOW...WHICH IS IN EFFECT FROM NOON SATURDAY TO 2 AM EDT SUNDAY. * ACCUMULATIONS...1 TO 2 INCHES. THE GREATEST ACCUMULATIONS SHOULD BE ON NON-PAVED SURFACES. * TIMING...RAIN WILL OVERSPREAD THE REGION AFTER MIDNIGHT TONIGHT, THEN MIX WITH WET SNOW AROUND MIDDAY BEFORE CHANGING TO WET SNOW DURING THE AFTERNOON. * IMPACTS...AREAS OF SLIPPERY TRAVEL DEVELOPING, AND THE HEAVY WET SNOW WILL WEIGH DOWN TREE LIMBS WHICH STILL HAVE LEAVES ON THEM. THIS WILL POTENTIALLY LEAD TO SOME DOWNED TREE LIMBS AND POWER OUTAGES. THERE COULD BE A BURST OF HEAVY WET SNOW DURING THE HEIGHT OF THE STORM, LOCALLY INCREASING THE ACCUMULATION RATE FOR A TIME SATURDAY EVENING. * WINDS...NORTH 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TEMPERATURES...AROUND 40, BUT THEN FALLING INTO THE LOWER 30S SATURDAY NIGHT. * VISIBILITIES...REDUCED TO WELL UNDER A MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE DRIVING. && $$ GORSE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 4:26 AM EDT | Small Craft Advisory | PHI | 32 hr | |
| Oct 27, 12:36 PM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester | 4 hr |
| Oct 27, 12:36 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 28 hr |
| Oct 27, 2:30 PM EDT | Freeze Warning | PHI | Hunterdon, Somerset | 18 hr |
| Oct 27, 4:22 AM EDT | Freeze Watch | PHI | Berks | 10 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.