Alert archive / New Jersey / Winter Storm Watches in 2017
Winter Storm Watch 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter storm watch at Feb 7, 2017, 3:29 PM EST for 4 states. It took effect at Feb 8, 2017, 10:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 7, 2017, 3:29 PM EST (20:29 UTC)
- In effect from
- Feb 8, 2017, 10:00 PM EST
- Expired
- Feb 8, 2017, 4:01 AM EST
- In force
- Issued by
- NWS Philadelphia/Mount Holly
All 25 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, Ocean 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), 70 km from the middle of the area, began a volume at 20:31 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, 8.5 hours before the alert went out and 124 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
- 1608 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
107 WWUS41 KPHI 072029 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 329 PM EST Tue Feb 7 2017 NJZ001-007>010-012-013-015-PAZ054-055-060>062-101>106-080830- /O.NEW.KPHI.WS.A.0003.170209T0300Z-170209T2300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-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, Freehold, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 329 PM EST Tue Feb 7 2017 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... The National Weather Service in Mount Holly has issued a Winter Storm Watch...which is in effect from Wednesday evening through Thursday afternoon. * LOCATIONS...Eastern Pennsylvania and central and northern New Jersey. * HAZARD TYPES...Heavy snow. * SNOW ACCUMULATIONS...Potential for 6 or more inches. * TIMING...A wintry mix will overspread the area from the west Wednesday night. The event will likely begin as snow north of the I-78 corridor. Elsewhere, rain will change over to snow from northwest to southeast late Wednesday night into Thursday morning. Sleet may mix briefly during the transition from rain to snow. The snow could be heavy at times late Wednesday night and Thursday morning before tapering off from west to east during the afternoon Thursday. * IMPACTS...The heavy snow and poor visibilities at times could make travel dangerous. Significant impacts to the Thursday morning rush are likely. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * TEMPERATURES...Upper 30s and lower 40s at the onset, falling into the lower 30s by early Thursday morning. * VISIBILITIES...1/2 mile or less at times in heavy snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is a potential for significant snow accumulations that may impact travel. Continue to monitor the latest forecasts. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ jrk
2 follow-up statements
678 WWUS41 KPHI 080228 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 928 PM EST Tue Feb 7 2017 DEZ001-MDZ008-NJZ014-016>020-026-027-PAZ070-071-081430- /O.EXB.KPHI.WS.A.0003.170209T0900Z-170209T2300Z/ New Castle-Cecil-Eastern Monmouth-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Coastal Ocean- Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Elkton, Sandy Hook, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Media, and Philadelphia 928 PM EST Tue Feb 7 2017 ...WINTER STORM WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON... The National Weather Service in Mount Holly has issued a Winter Storm Watch...which is in effect from late Wednesday night through Thursday afternoon. * LOCATIONS...Northeastern Maryland, northern Delaware, southeastern Pennsylvania and southern New Jersey. * HAZARD TYPES...Heavy snow. * SNOW ACCUMULATIONS...Potential for 5 or more inches. * TIMING...Rain will overspread the area from the west Wednesday night and changeover to snow from northwest to southeast early Thursday morning. Sleet may mix in briefly during the transition from rain to snow. The snow could be heavy at times Thursday morning before quickly tapering off from west to east during the afternoon. * IMPACTS...The heavy snow and poor visibilities at times could make travel dangerous. Significant impacts to the Thursday morning rush are possible. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * TEMPERATURES...Lower 40s at the onset, falling into the mid 30s early Thursday morning. * VISIBILITIES...1/2 mile or less at times in heavy snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is a potential for significant snow accumulations that may impact travel. Continue to monitor the latest forecasts. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ NJZ001-007>010-012-013-015-PAZ054-055-060>062-101>106-081430- /O.CON.KPHI.WS.A.0003.170209T0300Z-170209T2300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-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, Freehold, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 928 PM EST Tue Feb 7 2017 ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... * LOCATIONS...Eastern Pennsylvania and central and northern New Jersey. * HAZARD TYPES...Heavy snow. * SNOW ACCUMULATIONS...Potential for 6 or more inches. * TIMING...A wintry mix will overspread the area from the west Wednesday night. The event will likely begin as snow north of the I-78 corridor. Elsewhere, rain will change over to snow from northwest to southeast late Wednesday night into early Thursday morning. Sleet may mix in briefly during the transition from rain to snow. The snow could be heavy at times late Wednesday night and Thursday morning before tapering off quickly from west to east during the afternoon. * IMPACTS...The heavy snow and poor visibilities at times could make travel dangerous. Significant impacts to the Thursday morning rush are likely. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * TEMPERATURES...Upper 30s and lower 40s at the onset, falling into the upper 20s and lower 30s by early Thursday morning. * VISIBILITIES...1/2 mile or less at times in heavy snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is a potential for significant snow accumulations that may impact travel. Continue to monitor the latest forecasts. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ JRK
774 WWUS41 KPHI 080901 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 401 AM EST Wed Feb 8 2017 NJZ001-007>010-012-013-015-PAZ054-055-060>062-101>106-082115- /O.UPG.KPHI.WS.A.0003.170209T0300Z-170209T2300Z/ /O.NEW.KPHI.WS.W.0002.170209T0500Z-170209T2100Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-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, Freehold, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 401 AM EST Wed Feb 8 2017 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 4 PM EST THURSDAY... The National Weather Service in Mount Holly has issued a Winter Storm Warning for snow...which is in effect from midnight tonight to 4 PM EST Thursday. The Winter Storm Watch is no longer in effect. * ACCUMULATIONS...Snow accumulation of 6 to 10 inches. * LOCATIONS...Eastern Pennsylvania and central and northern New Jersey. * HAZARD TYPES...Heavy snow. * VISIBILITIES...One quarter mile or less at times.. * TIMING...A wintry mix will overspread the area from the west near midnight reaching the northern New Jersey coast by 4 am. The event will likely begin as snow north of the I-78 corridor. Elsewhere, rain will change over to snow from northwest to southeast into early Thursday morning. Sleet may mix in briefly during the transition from rain to snow. The snow likely will be heavy for a time Thursday morning before tapering off quickly from west to east during midday or the afternoon. * IMPACTS...The heavy snow will make many roads potentially impassable for several hours during the worst part of the storm which should be 5 am to 10 am. There may be widespread power outages due to the weight of the snow on tree limbs and power lines. The threat for power outages will be less where temperatures are mostly below 30 degrees during the snow. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * TEMPERATURES...falling into the 20s over most of this area during the snow before a slight recovery in the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel...keep an extra flashlight... food...and water in your vehicle in case of an emergency. Report snow and ice accumulation to the National Weather Service by calling our trained spotter line...posting to the NWS Mount Holly Facebook page...or using Twitter. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ DEZ001-MDZ008-NJZ014-016>020-026-027-PAZ070-071-082115- /O.UPG.KPHI.WS.A.0003.170209T0900Z-170209T2300Z/ /O.NEW.KPHI.WS.W.0002.170209T0900Z-170209T2100Z/ New Castle-Cecil-Eastern Monmouth-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Coastal Ocean- Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Elkton, Sandy Hook, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Long Beach Island, Wharton State Forest, Media, and Philadelphia 401 AM EST Wed Feb 8 2017 ...WINTER STORM WARNING IN EFFECT FROM 4 AM TO 4 PM EST THURSDAY... The National Weather Service in Mount Holly has issued a Winter Storm Warning for snow...which is in effect from 4 AM to 4 PM EST Thursday. The Winter Storm Watch is no longer in effect. * LOCATIONS...Northeastern Maryland, northern Delaware, southeastern Pennsylvania and southern New Jersey. * ACCUMULATIONS...Snow accumulation of 4 to 6 inches. * HAZARD TYPES...Heavy snow. * VISIBILITIES...One quarter mile or less at times. * TIMING...Rain will overspread the area between midnight and 3 AM Thursday and change to sleet and then snow from northwest to southeast by dawn Thursday. The snow should be heavy at times Thursday morning before quickly tapering off from west to east during midday or the afternoon. * IMPACTS...The heavy snow will make many roads briefly impassable and may produce widespread power outages due to the weight of the snow on tree limbs and power lines. * WINDS...North 15 to 25 mph with gusts up to 35 mph. * TEMPERATURES...Falling into the upper 20s to around 30 during the snow then a slight afternoon recovery. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel...keep an extra flashlight... food...and water in your vehicle in case of an emergency. Report snow and ice accumulation to the National Weather Service by calling our trained spotter line...posting to the NWS Mount Holly Facebook page...or using Twitter. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ DEZ002-MDZ012-015-NJZ021>025-082115- /O.NEW.KPHI.WW.Y.0007.170209T1300Z-170209T1900Z/ Kent-Kent MD-Queen Annes-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic- Including the cities of Dover, Chestertown, Centreville, Millville, Hammonton, Cape May Court House, Ocean City, and Atlantic City 401 AM EST Wed Feb 8 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM TO 2 PM EST THURSDAY... The National Weather Service in Mount Holly has issued a Winter Weather Advisory for snow...which is in effect from 8 AM to 2 PM EST Thursday. * LOCATIONS...a portion of northeast Maryland through central Delaware into the southern tip of New Jersey. * HAZARD TYPES...snow and possibly a period of sleet. * ACCUMULATIONS...Snow accumulation of 1 to 4 inches. * VISIBILITIES...One quarter mile or less at times during the morning. * TIMING...heaviest snow should fall sometime between 8 am and Noon. * IMPACTS...The snow will create snow covered roads and possibly produce isolated power outages. Gusty winds may lead to blowing snow and reduced visibility. * WINDS...North 20 to 25 mph with gusts up to 40 mph becoming northwest by Noon. * TEMPERATURES...falling to near 30 during the snow then recovering slightly during the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities...and use caution while driving. Report Snow and ice accumulation to the National Weather Service by calling our trained spotter line...posting to the NWS Mount Holly Facebook page...or using Twitter. Snowfall and ice accumulation forecast maps in addition to experimental probabilistic snowfall information for the latest event are available online at www.weather.gov/phi/winter && $$ Drag
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 7, 3:34 PM EST | Gale Watch | PHI | 11 hr |
Nearby
Winter Storm Watches in New Jersey, 2017Winter Storm Watches in Pennsylvania, 2017Winter Storm Watches in Maryland, 2017Every winter storm watch in 2017
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.