Alert archive / New Jersey / Areal Flood Advisories in 2019

Areal Flood Advisory 6, NWS Philadelphia/Mount Holly

January 20, 20196 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jan 20, 2019, 4:48 AM EST for 6 counties in New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jan 20, 2019, 4:48 AM EST (09:48 UTC)
Expired
Jan 20, 2019, 8:45 AM EST
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 63 km from the middle of the area, began a volume at 09:50 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, 9.8 hours before the alert went out and 148 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, Brookhaven, NY at 00:00Z on 2019-01-20Temperature 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, Brookhaven, NY at 00:00Z on 2019-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 square meters per square second.1939587897117Sfc1 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
665 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood advisory went out at Jan 20, 3:42 AM EST, 1 hour 6 minutes earlier.

Area forecast discussion, Jan 20, 3:42 AM EST, 1 hour 6 minutes before
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Hazardous weather outlook, Jan 20, 1:43 AM EST, 3 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
143 AM EST Sun Jan 20 2019

MDZ012-015-019-020-NJZ008>010-PAZ060>062-103-105-210645-
Kent MD-Queen Annes-Talbot-Caroline-Morris-Hunterdon-Somerset-Berks-
Lehigh-Northampton-Western Montgomery-Upper Bucks-
143 AM EST Sun Jan 20 2019

This Hazardous Weather Outlook is for northeast Maryland, northern
New Jersey, northwest New Jersey, east central Pennsylvania and
southeast Pennsylvania.

.DAY ONE...Tonight.

Hazardous weather is not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Precipitation will come to an end by midday Sunday as a strong cold
front moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet and slushy surfaces, causing icy conditions.

Dangerous wind chills are likely Sunday night through early Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-PAZ054-055-210645-
Sussex-Carbon-Monroe-
143 AM EST Sun Jan 20 2019

...WINTER STORM WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

This Hazardous Weather Outlook is for northern New Jersey and
northeast Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

Precipitation will come to an end by midday Sunday as a strong cold
front moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet and slushy surfaces, causing icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ008-PAZ101-102-104-210645-
Cecil-Western Chester-Eastern Chester-Eastern Montgomery-
143 AM EST Sun Jan 20 2019

...FLOOD WATCH IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

This Hazardous Weather Outlook is for northeast Maryland and
southeast Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

Precipitation will come to an end by midday Sunday as a strong cold
front moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet surfaces causing icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ007-210645-
Warren-
143 AM EST Sun Jan 20 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

This Hazardous Weather Outlook is for northern New Jersey.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

Precipitation will come to an end by midday Sunday as a strong cold
front moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet and slushy surfaces, causing icy conditions.

Dangerous wind chills are likely Sunday night through early Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ015-017>019-PAZ070-071-106-210645-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
143 AM EST Sun Jan 20 2019

...FLOOD WATCH IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 3 PM
EST THIS AFTERNOON...

This Hazardous Weather Outlook is for central New Jersey, southern
New Jersey and southeast Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.
   Coastal Flood Advisory.

Rain will come to an end by midday Sunday as a strong cold front
moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet surfaces and icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ001-NJZ016-210645-
New Castle-Salem-
143 AM EST Sun Jan 20 2019

...FLOOD WATCH IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO NOON
EST TODAY...

This Hazardous Weather Outlook is for northern Delaware and
southern New Jersey.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.
   Coastal Flood Advisory.

Rain will come to an end by midday Sunday as a strong cold front
moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet surfaces and icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012>014-210645-
Middlesex-Western Monmouth-Eastern Monmouth-
143 AM EST Sun Jan 20 2019

...FLOOD WATCH IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 11 AM EST THIS
MORNING...

This Hazardous Weather Outlook is for central New Jersey and
northern New Jersey.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.
   Coastal Flood Advisory.

Rain will come to an end by midday Sunday as a strong cold front
moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet surfaces and icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002>004-NJZ020>027-210645-
Kent-Inland Sussex-Delaware Beaches-Ocean-Cumberland-Atlantic-
Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-
143 AM EST Sun Jan 20 2019

...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 11 AM EST THIS
MORNING...

This Hazardous Weather Outlook is for central Delaware, southern
Delaware and southern New Jersey.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Rain could be heavy at times this evening and tonight leading to
flooding, especially with urban areas and small streams.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Rain will come to an end by midday Sunday as a strong cold front
moves through with strong northwest winds and rapidly falling
temperatures as arctic air rapidly moves in. This will lead to quick
refreezing of wet surfaces and icy conditions.

Dangerous wind chills are possible Sunday night through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-431-450>455-210645-
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-
143 AM EST Sun Jan 20 2019

...GALE WARNING IN EFFECT UNTIL 6 PM EST MONDAY...
...FREEZING SPRAY ADVISORY IN EFFECT FROM 1 AM TO 6 PM EST MONDAY...

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.
   Freezing Spray Advisory.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Local storm report, Jan 20, 2:32 AM EST, 2 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
232 AM EST SUN JAN 20 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 AM     SNOW             HAMBURG                 41.15N 74.58W
01/20/2019  M4.1 INCH        SUSSEX             NJ   TRAINED SPOTTER

&&

TCD
Local storm report, Jan 20, 2:36 AM EST, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
236 AM EST SUN JAN 20 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 AM     SNOW             COOLBAUGH TWP           41.18N 75.36W
01/20/2019  M9.5 INCH        MONROE             PA   TRAINED SPOTTER

            THIS REPORT UPDATES THE PREVIOUS REPORT.
            SNOWFALL RATES OF 1 IN/HR FOR PAST THREE
            HOURS.

&&

TCD
Local storm report, Jan 20, 4:31 AM EST, 17 minutes before
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Local storm report, Jan 20, 4:37 AM EST, 11 minutes before
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Local storm report, Jan 20, 4:42 AM EST, 6 minutes before
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Local storm report, Jan 20, 4:45 AM EST, 3 minutes before
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The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 19, 11:52 PM ESTAreal Flood AdvisoryPHIGloucester, Salem8 hr
Jan 20, 1:11 AM ESTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer, Monmouth, Salem8 hr
Jan 20, 1:13 AM ESTSpecial Weather StatementPHIBurlington, Mercer, Middlesex47 min
Jan 20, 1:58 AM ESTSpecial Weather StatementPHIMonmouth32 min
Jan 20, 3:38 AM ESTWind Chill AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more50 hr
Jan 20, 4:13 AM ESTAreal Flood WarningPHIHunterdon, Somerset3 hr
Jan 20, 6:12 AM ESTSpecial Weather StatementPHIAtlantic, Cumberland33 min
Jan 20, 9:49 AM ESTWind AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more30 hr
Jan 20, 10:03 AM ESTWind Chill WarningPHICarbon, Monroe27 hr

Nearby

Areal Flood Advisories in New Jersey, 2019Every areal flood advisory in 2019

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.