Alert archive / Pennsylvania / Winter Storm Watches in 2011
Winter Storm Watch 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter storm watch at Mar 30, 2011, 3:55 PM EDT for Morris County, Sussex County, Warren County, New Jersey; 4 counties in Pennsylvania. It took effect at Mar 31, 2011, 10:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 30, 2011, 3:55 PM EDT (19:55 UTC)
- In effect from
- Mar 31, 2011, 10:00 PM EDT
- Expired
- Mar 31, 2011, 3:54 AM EDT
- In force
- Issued by
- NWS Philadelphia/Mount Holly
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 123 km from the middle of the area, began a volume at 19:56 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, 7.9 hours before the alert went out and 176 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
- 1725 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
910 WWUS41 KPHI 301955 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 355 PM EDT WED MAR 30 2011 ...HEAVY SNOW IS LIKELY TO OCCUR THURSDAY NIGHT AND INTO FRIDAY... .LOW PRESSURE IN THE FORM OF A SPRING NOREASTER MOVING UP ALONG THE COAST THURSDAY EVENING WILL MOVE NORTHEASTWARD THROUGH OUR COASTAL WATERS LATE THURSDAY NIGHT AND THROUGH THE NEW YORK AND NEW ENGLAND COASTAL WATERS FRIDAY. NJZ001-007-008-PAZ054-055-061-062-310900- /O.NEW.KPHI.WS.A.0007.110401T0200Z-110401T1600Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...ALLENTOWN...BETHLEHEM...EASTON 355 PM EDT WED MAR 30 2011 ...WINTER STORM WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING. * LOCATIONS...THE SOUTHERN POCONOS...THE LEHIGH VALLEY...AND NORTHWESTERN NEW JERSEY. * HAZARD TYPES...RAIN WILL MIX WITH AND CHANGE TO SNOW THURSDAY NIGHT AND CONTINUE FRIDAY MORNING. * ACCUMULATIONS...5 TO 10 INCHES OF SNOW. * TIMING...THURSDAY NIGHT AND FRIDAY MORNING. * IMPACTS...SLIPPERY ROADS AND DEGRADED TRAVEL...ALONG WITH ISOLATED DOWNED TREE LIMBS OR TREES AND RESULTANT ISOLATED POWER OUTAGES. * WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 20 MPH. * TEMPERATURES...UPPER 20S TO MID 30S. * VISIBILITIES...OCCASIONALLY ONE HALF MILE OR LESS IN MODERATE TO HEAVY SNOW. 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. && $$
1 follow-up statement
613 WWUS41 KPHI 310754 WSWPHI URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 354 AM EDT THU MAR 31 2011 ...HEAVY SNOW IS LIKELY TO OCCUR THURSDAY NIGHT AND INTO FRIDAY... .LOW PRESSURE IN THE FORM OF A SPRING NOR'EASTER MOVING UP ALONG THE COAST THIS EVENING WILL MOVE NORTHEASTWARD THROUGH OUR COASTAL WATERS LATE TONIGHT AND THEN THROUGH THE NEW YORK AND NEW ENGLAND COASTAL WATERS FRIDAY. NJZ001-007-008-PAZ054-055-061-062-311715- /O.UPG.KPHI.WS.A.0007.110401T0200Z-110401T1600Z/ /O.NEW.KPHI.WS.W.0009.110401T0200Z-110401T1600Z/ SUSSEX-WARREN-MORRIS-CARBON-MONROE-LEHIGH-NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... JIM THORPE...STROUDSBURG...ALLENTOWN...BETHLEHEM...EASTON 354 AM EDT THU MAR 31 2011 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT FRIDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO NOON EDT FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * LOCATIONS...THE SOUTHERN POCONOS AND LEHIGH VALLEY OF EASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY. * HAZARD TYPES...HEAVY SNOWFALL. * ACCUMULATIONS...5 TO 10 INCHES. THE GREATEST ACCUMULATIONS WILL OCCUR AT THE HIGHER ELEVATIONS. * TIMING...TONIGHT THROUGH FRIDAY MORNING. * IMPACTS...SLIPPERY ROADS AND DEGRADED TRAVEL...ALONG WITH ISOLATED DOWNED TREE LIMBS OR TREES AND RESULTANT ISOLATED POWER OUTAGES. * WINDS...NORTHEAST AT 10 TO 20 MPH WITH HIGHER GUSTS TONIGHT. WINDS BECOMING NORTHWEST FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ PO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 3:52 PM EDT | Gale Watch | PHI | 24 hr | |
| Mar 30, 3:52 PM EDT | Small Craft Advisory | PHI | 67 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.