Alert archive / New Jersey / Winter Weather Advisories in 2017

Winter Weather Advisory 6, NWS Philadelphia/Mount Holly

January 29, 2017Kent County, New Castle County, Sussex County, Delaware; 8 counties in New Jersey; 5 counties in Maryland

NWS Philadelphia/Mount Holly issued this winter weather advisory at Jan 29, 2017, 3:24 AM EST for Kent County, New Castle County, Sussex County, Delaware; 8 counties in New Jersey; 5 counties in Maryland. It took effect at Jan 30, 2017, 12:00 AM EST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jan 29, 2017, 3:24 AM EST (08:24 UTC)
In effect from
Jan 30, 2017, 12:00 AM EST
Expired
Jan 30, 2017, 8:25 AM EST
In force
8 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 08:30 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 8.4 hours before the alert went out and 158 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.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2017-01-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2017-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1673 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

422 
WWUS41 KPHI 290824
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
324 AM EST SUN JAN 29 2017

...SNOW IS EXPECTED FOR LATE TONIGHT INTO MONDAY MORNING...

.LOW PRESSURE IS FORECAST TO DEVELOP OVER VIRGINIA LATE TODAY. 
THE LOW IS ANTICIPATED TO PASS OFF THE DELMARVA COAST LATE TONIGHT
BEFORE MOVING OUT TO SEA ON MONDAY.

DEZ001>004-MDZ008-012-015-019-020-292100-
/O.NEW.KPHI.WW.Y.0006.170130T0500Z-170130T1700Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF WILMINGTON, DOVER, GEORGETOWN, 
REHOBOTH BEACH, ELKTON, CHESTERTOWN, CENTREVILLE, EASTON, 
AND DENTON
324 AM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 
NOON EST MONDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER 
WEATHER ADVISORY FOR SNOW. IT IS IN EFFECT FROM MIDNIGHT TONIGHT 
UNTIL NOON ON MONDAY.

* LOCATIONS...NORTHEASTERN MARYLAND AND DELAWARE.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...FROM 1 TO 3 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION LATE THIS EVENING
  AND IT SHOULD CONTINUE INTO MONDAY MORNING. THE SNOW MAY MIX 
  WITH OR CHANGE TO RAIN BEFORE ENDING BY MIDDAY ON MONDAY.

* IMPACTS...THE SNOW MAY IMPACT TRAVEL CONDITIONS, ESPECIALLY DURING
  THE MONDAY MORNING COMMUTE. ROADS AND WALKWAYS MAY BECOME SNOW 
  COVERED AND SLIPPERY.

* TEMPERATURES...GENERALLY IN THE LOWER 30S DURING THE SNOW 
  EVENT.

* VISIBILITY...AROUND OR LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY 
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND 
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE 
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT 
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO 
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT ARE
AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

NJZ016>018-020>027-292100-
/O.NEW.KPHI.WW.Y.0006.170130T0800Z-170130T1700Z/
SALEM-GLOUCESTER-CAMDEN-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF PENNSVILLE, GLASSBORO, CAMDEN, 
CHERRY HILL, JACKSON, MILLVILLE, HAMMONTON, CAPE MAY COURT HOUSE,
OCEAN CITY, ATLANTIC CITY, LONG BEACH ISLAND, 
AND WHARTON STATE FOREST
324 AM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO NOON EST
MONDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER 
WEATHER ADVISORY FOR SNOW. IT IS IN EFFECT FROM 300 AM MONDAY 
UNTIL NOON ON MONDAY.

* LOCATIONS...SOUTHERN NEW JERSEY.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...FROM 1 TO 3 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION AFTER 
  MIDNIGHT AND IT SHOULD CONTINUE INTO MONDAY MORNING. THE SNOW 
  MAY MIX WITH OR CHANGE TO RAIN BEFORE ENDING BY MIDDAY ON 
  MONDAY.

* IMPACTS...THE SNOW MAY IMPACT TRAVEL CONDITIONS, ESPECIALLY DURING
  THE MONDAY MORNING COMMUTE. ROADS AND WALKWAYS MAY BECOME SNOW 
  COVERED AND SLIPPERY.

* TEMPERATURES...GENERALLY IN THE UPPER 20S AND LOWER 30S DURING 
  THE SNOW EVENT.

* VISIBILITY...AROUND OR LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY 
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND 
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE 
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT 
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO 
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT ARE
AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

IOVINO
5 follow-up statements
537 
WWUS41 KPHI 292039
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
339 PM EST SUN JAN 29 2017

...SNOW IS EXPECTED FOR LATE TONIGHT INTO MONDAY MORNING...

.LOW PRESSURE WILL FORM TO THE WEST OF THE CHESAPEAKE BAY THROUGH 
THIS EVENING. THE LOW WILL STRENGTHEN NEAR THE NORTHERN MID-ATLANTIC 
COAST LATE TONIGHT AND MOVE OUT TO SEA ON MONDAY.

DEZ001>004-MDZ008-012-015-019-020-301030-
/O.CON.KPHI.WW.Y.0006.170130T0500Z-170130T1700Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF WILMINGTON, DOVER, GEORGETOWN, 
REHOBOTH BEACH, ELKTON, CHESTERTOWN, CENTREVILLE, EASTON, 
AND DENTON
339 PM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO NOON EST MONDAY...

* LOCATIONS...NORTHEASTERN MARYLAND AND DELAWARE.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION LATE THIS
  EVENING AND IT SHOULD CONTINUE INTO MONDAY MORNING. 

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ANY
  UNTREATED SURFACES. 

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

NJZ016>018-020>027-301030-
/O.CON.KPHI.WW.Y.0006.170130T0800Z-170130T1700Z/
SALEM-GLOUCESTER-CAMDEN-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF PENNSVILLE, GLASSBORO, CAMDEN, 
CHERRY HILL, JACKSON, MILLVILLE, HAMMONTON, CAPE MAY COURT HOUSE,
OCEAN CITY, ATLANTIC CITY, LONG BEACH ISLAND, 
AND WHARTON STATE FOREST
339 PM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO NOON
EST MONDAY...

* LOCATIONS...SOUTHERN NEW JERSEY.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION AFTER
  MIDNIGHT AND IT SHOULD CONTINUE INTO MONDAY MORNING. 

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ANY
  UNTREATED SURFACES. 

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

PO
798 
WWUS41 KPHI 300342
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1042 PM EST SUN JAN 29 2017

...SNOW IS EXPECTED OVERNIGHT INTO MONDAY MORNING...

.LOW PRESSURE DEVELOPING IN THE CHESAPEAKE BAY REGION LATE THIS 
EVENING WILL PASS OFF THE COAST LATE TONIGHT. THE LOW IS EXPECTED 
TO MOVE OUT TO SEA ON MONDAY.

DEZ001>004-MDZ008-012-015-019-020-301700-
/O.CON.KPHI.WW.Y.0006.170130T0500Z-170130T1700Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF WILMINGTON, DOVER, GEORGETOWN, 
REHOBOTH BEACH, ELKTON, CHESTERTOWN, CENTREVILLE, EASTON, 
AND DENTON
1042 PM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST 
MONDAY...

* LOCATIONS...NORTHEASTERN MARYLAND AND DELAWARE.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION OVERNIGHT AND
  IT SHOULD CONTINUE INTO MONDAY MORNING. THE SNOW IS EXPECTED TO
  COME TO AN END DURING THE MID TO LATE MORNING HOURS.

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ROADS AND
  WALKWAYS AND IT SHOULD IMPACT THE MONDAY MORNING COMMUTE.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

NJZ016>018-020>027-301700-
/O.CON.KPHI.WW.Y.0006.170130T0800Z-170130T1700Z/
SALEM-GLOUCESTER-CAMDEN-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF PENNSVILLE, GLASSBORO, CAMDEN, 
CHERRY HILL, JACKSON, MILLVILLE, HAMMONTON, CAPE MAY COURT HOUSE,
OCEAN CITY, ATLANTIC CITY, LONG BEACH ISLAND, 
AND WHARTON STATE FOREST
1042 PM EST SUN JAN 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO NOON 
EST MONDAY...

* LOCATION...SOUTHERN NEW JERSEY.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* TIMING...SNOW IS FORECAST TO OVERSPREAD THE REGION OVERNIGHT AND
  IT SHOULD CONTINUE INTO MONDAY MORNING. THE SNOW IS EXPECTED TO
  COME TO AN END DURING THE MID TO LATE MORNING HOURS.

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ROADS AND
  WALKWAYS AND IT SHOULD IMPACT THE MONDAY MORNING COMMUTE.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW MAY
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$
901 
WWUS41 KPHI 300758
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
258 AM EST MON JAN 30 2017

...SNOW THIS MORNING...

.LOW PRESSURE LOCATED OFF THE DELMARVA COAST EARLY THIS MORNING 
WILL MOVE OUT TO SEA TODAY.

DEZ001>004-MDZ008-012-015-019-020-301700-
/O.CON.KPHI.WW.Y.0006.000000T0000Z-170130T1700Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF WILMINGTON, DOVER, GEORGETOWN, 
REHOBOTH BEACH, ELKTON, CHESTERTOWN, CENTREVILLE, EASTON, 
AND DENTON
258 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST 
TODAY...

* LOCATIONS...NORTHEASTERN MARYLAND AND DELAWARE.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...GENERALLY 1 TO 3 INCHES.

* TIMING...SNOW WILL CONTINUE EARLY THIS MORNING. THE STEADY SNOW
  IS EXPECTED TO COME TO AN END DURING THE MID TO LATE MORNING
  HOURS WITH SCATTERED SNOW SHOWERS LINGERING INTO THE AFTERNOON.

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ROADS AND
  WALKWAYS AND IT WILL IMPACT THE MORNING COMMUTE.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW WILL 
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND 
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

NJZ016>018-020>027-301700-
/O.CON.KPHI.WW.Y.0006.170130T0800Z-170130T1700Z/
SALEM-GLOUCESTER-CAMDEN-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF PENNSVILLE, GLASSBORO, CAMDEN, 
CHERRY HILL, JACKSON, MILLVILLE, HAMMONTON, CAPE MAY COURT HOUSE,
OCEAN CITY, ATLANTIC CITY, LONG BEACH ISLAND, 
AND WHARTON STATE FOREST
258 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST
TODAY...

* LOCATION...SOUTHERN NEW JERSEY.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...UP TO 2 TO 4 INCHES.

* TIMING...SNOW WILL CONTINUE EARLY THIS MORNING. THE STEADY SNOW
  IS EXPECTED TO COME TO AN END DURING THE MID TO LATE MORNING
  HOURS WITH SCATTERED SNOW SHOWERS LINGERING INTO THE AFTERNOON.

* IMPACTS...THE SNOW WILL CREATE SLIPPERY CONDITIONS ON ROADS AND
  WALKWAYS AND IT WILL IMPACT THE MORNING COMMUTE.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW WILL 
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND 
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

IOVINO
488 
WWUS41 KPHI 301041
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
541 AM EST MON JAN 30 2017

...SNOW THIS MORNING...

.LOW PRESSURE LOCATED OFF THE DELMARVA COAST EARLY THIS MORNING
WILL MOVE OUT TO SEA TODAY.

DEZ001-MDZ008-012-NJZ016>018-301145-
/O.CAN.KPHI.WW.Y.0006.000000T0000Z-170130T1700Z/
NEW CASTLE-CECIL-KENT MD-SALEM-GLOUCESTER-CAMDEN-
INCLUDING THE CITIES OF WILMINGTON, ELKTON, CHESTERTOWN, 
PENNSVILLE, GLASSBORO, CAMDEN, AND CHERRY HILL
541 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
WINTER WEATHER ADVISORY.

THERE COULD REMAIN SOME LIGHT SNOW THIS MORNING, BUT THE HEAVIEST
OF THE ACCUMULATING SNOWFALL HAS ENDED ACROSS THE AREA AND
SIGNIFICANT ACCUMULATIONS ARE NO LONGER EXPECTED. THEREFORE THE 
WINTER WEATHER ADVISORY HAS BEEN CANCELLED. UNTREATED SURFACES 
WILL REMAIN SLIPPERY WHERE SNOW FELL OVERNIGHT HOWEVER. THERE IS 
ALSO A POSSIBILITY FOR SNOW SHOWERS THIS AFTERNOON.

$$

DEZ002>004-MDZ015-019-020-301700-
/O.CON.KPHI.WW.Y.0006.000000T0000Z-170130T1700Z/
KENT-INLAND SUSSEX-DELAWARE BEACHES-QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF DOVER, GEORGETOWN, REHOBOTH BEACH, 
CENTREVILLE, EASTON, AND DENTON
541 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST
TODAY...

* LOCATIONS...NORTHEASTERN MARYLAND AND DELAWARE.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...GENERALLY 1 TO 3 INCHES.

* TIMING...SNOW WILL CONTINUE EARLY THIS MORNING. THE STEADY 
  SNOW IS EXPECTED TO COME TO AN END DURING THE MID TO LATE 
  MORNING HOURS WITH SCATTERED SNOW SHOWERS LINGERING INTO THE 
  AFTERNOON.

* IMPACTS...THE HEAVY SNOW WILL CREATE SNOW COVERED ROADS AND 
  PRODUCE SCATTERED POWER OUTAGES. 

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$

NJZ020>027-301700-
/O.CON.KPHI.WW.Y.0006.000000T0000Z-170130T1700Z/
OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF JACKSON, MILLVILLE, HAMMONTON, 
CAPE MAY COURT HOUSE, OCEAN CITY, ATLANTIC CITY, 
LONG BEACH ISLAND, AND WHARTON STATE FOREST
541 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST
TODAY...

* LOCATION...SOUTHERN NEW JERSEY.

* HAZARD TYPE...SNOW.

* SNOW ACCUMULATIONS...UP TO 2 TO 4 INCHES.

* TIMING...SNOW WILL CONTINUE EARLY THIS MORNING. THE STEADY 
  SNOW IS EXPECTED TO COME TO AN END DURING THE MID TO LATE 
  MORNING HOURS WITH SCATTERED SNOW SHOWERS LINGERING INTO THE 
  AFTERNOON.

* IMPACTS...THE HEAVY SNOW WILL CREATE SNOW COVERED ROADS AND 
  PRODUCE SCATTERED POWER OUTAGES. 

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT A PERIOD OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND
LIMITED VISIBILITY. USE EXTRA CAUTION WHILE DRIVING.

PLEASE REPORT SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE
BY CALLING OUR TRAINED SPOTTER LINE...POSTING TO THE NWS MOUNT
HOLLY FACEBOOK PAGE OR BY USING TWITTER.

SNOWFALL AND ICE ACCUMULATION FORECAST MAPS IN ADDITION TO
EXPERIMENTAL PROBABILISTIC SNOWFALL INFORMATION FOR THIS EVENT
ARE AVAILABLE ONLINE AT WWW.WEATHER.GOV/PHI/WINTER

&&

$$
562 
WWUS41 KPHI 301325
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
825 AM EST MON JAN 30 2017

DEZ002>004-MDZ015-019-020-NJZ020>027-301430-
/O.CAN.KPHI.WW.Y.0006.000000T0000Z-170130T1700Z/
KENT-INLAND SUSSEX-DELAWARE BEACHES-QUEEN ANNES-TALBOT-CAROLINE-
OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF DOVER, GEORGETOWN, REHOBOTH BEACH, 
CENTREVILLE, EASTON, DENTON, JACKSON, MILLVILLE, HAMMONTON, 
CAPE MAY COURT HOUSE, OCEAN CITY, ATLANTIC CITY, 
LONG BEACH ISLAND, AND WHARTON STATE FOREST
825 AM EST MON JAN 30 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
WINTER WEATHER ADVISORY.

SNOW CONTINUES TO RAPIDLY MOVE OFFSHORE WITH ANY ADDITIONAL
ACCUMULATIONS ENDING. HOWEVER, CONTINUE TO USE SOME EXTRA CAUTION
AS THERE MAY STILL BE SOME SLIPPERY CONDITIONS ON UNTREATED 
SURFACES FOR AWHILE LONGER.

$$

GORSE

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 Jan 28, 9:41 PM EST, 5 hours 43 minutes earlier.

Area forecast discussion, Jan 28, 9:41 PM EST, 5 hours 43 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
941 PM EST Sat Jan 28 2017

.SYNOPSIS...
A cold front approaching from the northwest tonight and Sunday
will move through the area Sunday night and Monday. Meanwhile,
weak low pressure is expected to develop along this front near
the Mid- Atlantic coast late Sunday night before moving quickly
out to sea on Monday. The next clipper low will track from the
Great Lakes to New England Monday night through Tuesday night. A
few more weak disturbances will pass to our north during the
second half of the work week while high pressure tries to build
in from the west. A stronger storm system may organize over the
Gulf Coast states early next weekend.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
The synoptic pattern will not change much tonight with a west to
northwest flow sfc flow in place and a gradually deepening upper
trough aloft. The axis of the trough is still to the west and a
few short waves are pushing across the area ahead of it.

Skies have started to clear out significantly across Delmarva
and portions of southern New Jersey and into Southeastern
Pennsylvania. As a result, temperatures have tanked at Millville
where it was already 25 degrees at 9PM. Clouds will start to
move back in late tonight.

Otherwise, expect majority of the temperatures to dip into the
20s/low 30s overnight. Winds will diminish overnight to around 5
mph.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/...
Little change. A weak shortwave will cross Delmarva and srn NJ
during the morning. This could bring some extra cloudiness at
times. Overall, probably less clouds Sunday and less in the way
of any flurries. Temperatures will climb a few degrees above
normal, so mostly upper 30s/low 40s over the area. West winds
will be a little gusty in the late morning and early afternoon.
Gusts up to 20 mph are possible.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
The large-scale pattern aloft will start out rather amplified,
featuring a ridge along the southwestern U.S coast and trough
over the eastern CONUS through Monday morning. The pattern
then de- amplifies later Monday, becoming quasi-zonal across the
CONUS for mid to late week, though there will still be a weak
trough influencing the Great Lakes/Northeast states and upstream
ridging favored over along the Rockies. Fast W-NW flow
associated with the polar jet will feature an active storm track
across the northern CONUS this week. A series of, mainly weak
and moisture-starved clipper systems will bring several chances
of light precipitation (mainly snow) to portions of the region
through the end of the work week.

The first clipper system is expected to pass through Sunday
night and Monday. This system looks to contain a potent H5
vort max rounding the base of the longwave trough. 12Z models
are showing enhanced lift ahead of this disturbance that would
support a swath of light snow across roughly the southern half
of the forecast area (SE PA, S half of NJ, Delmarva). The snow
looks to move in mid to late evening Sunday and end Monday
morning. Narrowing down the timing even further will be
important to determine if the snow could impact the morning
rush. The current thinking is that snow could linger past
sunrise Monday morning toward coastal NJ/DE. Overall, there was
good model agreement regarding the location and timing of the
snow which allowed us to comfortably raise PoPs to likely south
of the PA Turnpike/I-195. Snowfall accumulations will generally
be an inch or less. However, some of the higher-res guidance
(NAM/RGEM) were picking up on a mesoscale snow band resulting
from enhanced frontogenetical lift just to the NW of the low.
This is certainly a possibility as the low starts to deepen off
the Delmarva coast. The latest snowfall graphic that was sent to
the web this afternoon highlights a swath of 0.5-1.5” over a
broader area due to uncertainty in the placement of this
mesoscale snow band. Accordingly, the higher accumulations will
likely fall over a much smaller area and isolated spots may
potentially pick up just over 2”. NW flow/CAA pattern behind
the departing clipper system will result in seasonably cold
temperatures on Monday with highs in the 30s.

Winds will back out the SW ahead of the next clipper system
Monday night into Tuesday. This system will be stronger and
track farther north than the previous one. The northern half of
the CWA is favored to see precipitation for this event late
Monday night into Tuesday. With the track of the surface low
being to our north, snow likely mixes with and then changes to
rain from south to north during the day on Tuesday. Higher
elevations north of I-78 and west of I-287 will likely remain
cold enough to remain as snow. Sub-advisory snowfall
accumulations is the most likely outcome from this moist-
starved clipper.

At least two more weak disturbances are forecast to move
eastward across the Great Lakes and Northeast states during
the Tuesday night-Thursday time frame. The bulk of the lift and
associated precipitation from these systems appear to reside
north of the forecast area. Slight chance PoPs are confined to
the I-80 corridor, while the rest of the forecast was kept dry
with high pressure nosing in from west.

The storm track looks to shift southward toward the Gulf Coast
and Southeast states late in the week into next weekend. The
pattern aloft appears to be rather flat during this time which
would favor a progressive/suppressed track to our south.
However, we will have to monitor for possible phasing of
southern/northern streams in a developing split flow pattern,
which could result in a stronger storm system tracking farther
north sometime next weekend.

&&

.AVIATION /03Z SUNDAY THROUGH THURSDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Tonight...VFR conditions will continue through the TAF period.
Clouds have cleared at KMIV, KACY, KILG, and KPHL. Additional
clearing may occur at the remaining terminals through 04Z.
Clouds will start to filter back into the region late tonight
towards daybreak. Winds have lost their gustiness and will
continue to drop off tonight, going calm in many spots.

Sunday...the day will begin mostly sunny, then clouds will
increase late. Winds will become a bit gusty by mid- morning but
will drop off by late afternoon/early evening.

OUTLOOK...

Sunday night and Monday morning...Light snow likely from PHL
southward late Sunday evening through early Monday morning.
Widespread MVFR restrictions likely across these southern
terminals. A small band of steadier/heavier snow could bring
more localized IFR (perhaps briefly LIFR) restrictions. Still
uncertain where this band sets up, but it will most likely be
closer to ILG- MIV-ACY. Improving to VFR as the snow ends from
west to east Monday morning.

Monday afternoon and night...Predominately VFR. NW winds 10-15 kt
with gusts to 20-25 kt during the afternoon.

Tuesday...Chance of snow showers, particularly across northern
terminals  (RDG-ABE-TTN). Snow should mix with and then changeover
to rain from S to N during the late morning and afternoon. Sub-VFR
would be likely where it's snowing. Mainly VFR across southern
terminals. Breezy SW winds developing, especially over the southern
terminals where gusts 25-30kt are possible.

Tuesday night through Thursday...Mainly VFR.

&&

.MARINE...
Winds and seas have fallen below Small Craft Advisory levels and
we have gone ahead and cancelled the current advisory.

Winds will remain out of the west or southwest around 10 to 15
knots. Seas will stay around 2 to 4 feet.

OUTLOOK...

Sunday night through Monday morning...Winds and seas below SCA
criteria.

Monday afternoon and Monday evening...Northwest winds increase. SCA
will likely be required with gusts around 25 kt.

Late Monday night...Winds and seas below SCA criteria.

Tuesday...Winds turn SW and increase during the day Tuesday. Despite
shallow mixing profiles, winds near 30 kt only a few hundred feet
off the surface should be able to mix down. There is a chance for
gale-force gusts in the coastal waters if deeper mixing develops as
35-40 kt winds are forecast to be only about 1000 ft AGL. Capped
gusts below gale force for now but will highlight potential in HWO.

Tuesday night through Thursday...Winds turn Wly behind a fropa. An
extended period of SCA possible midweek with gusts to 25 kt,
especially over the coastal Atlantic waters.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

Synopsis...Klein
Near Term...Meola/O'Hara
Short Term...O'Hara
Long Term...Klein
Aviation...Klein/Meola/O'Hara
Marine...Klein/Meola/O'Hara
Hazardous weather outlook, Jan 28, 4:01 PM EST, 11 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 PM EST SAT JAN 28 2017

NJZ001-007>010-012>015-PAZ054-055-060>062-103-105-106-292115-
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
WESTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
401 PM EST SAT JAN 28 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN
NEW JERSEY...NORTHWEST NEW JERSEY...EAST CENTRAL
PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LIGHT SNOWFALL ACCUMULATIONS ARE LIKELY TUESDAY...PARTICULARLY AT
HIGHER ELEVATIONS IN NORTHEASTERN PENNSYLVANIA AND NORTHWESTERN NEW
JERSEY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-PAZ070-071-101-102-104-
292115-
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA-WESTERN CHESTER-
EASTERN CHESTER-EASTERN MONTGOMERY-
401 PM EST SAT JAN 28 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN
DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LIGHT SNOWFALL ACCUMULATIONS ARE LIKELY ACROSS SOUTHEASTERN
PENNSYLVANIA, SOUTHERN NEW JERSEY AND THE DELMARVA REGION SUNDAY
NIGHT. THE SNOW MAY LINGER A BIT LATER INTO MONDAY MORNING,
ESPECIALLY NEAR THE COAST, WHICH COULD IMPACT THE MORNING COMMUTE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-431-450>455-292115-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
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-
401 PM EST SAT JAN 28 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND
DELAWARE BAY WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SOUTHWESTERLY WIND GUSTS MAY REACH GALE FORCE ON TUESDAY.

.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.

IssuedProductOfficeCountiesLasted
Jan 29, 3:25 AM ESTSmall Craft AdvisoryPHI3 days
Jan 29, 3:44 PM ESTGale WatchPHI24 hr

Nearby

Winter Weather Advisories in New Jersey, 2017Winter Weather Advisories in Maryland, 2017Winter Weather Advisories in Delaware, 2017Every winter weather advisory 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.