Alert archive / New Jersey / Areal Flood Advisories in 2018

Areal Flood Advisory 213, NWS Philadelphia/Mount Holly

August 11, 2018Middlesex County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 11, 2018, 10:49 AM EDT for Middlesex County, Somerset County, New Jersey. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Aug 11, 2018, 10:49 AM EDT (14:49 UTC)
Expired: Aug 11, 2018, 1:30 PM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Middlesex County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 14:52 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 12:00Z, 2.8 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 840 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.9

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 Aug 11, 6:23 AM EDT, 4 hours 26 minutes earlier.

Area forecast discussion, Aug 11, 6:23 AM EDT, 4 hours 26 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Aug 11, 4:33 AM EDT, 6 hours 16 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
433 AM EDT Sat Aug 11 2018

NJZ001-007>010-PAZ054-055-060>062-101>105-120845-
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

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

.DAY ONE...Today and Tonight.

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

   Flash Flood Watch.

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

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-017>019-PAZ070-071-106-120845-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 5 AM EDT SUNDAY...

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

.DAY ONE...Today and Tonight.

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

   Flash Flood Watch.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

DEZ001-NJZ016-120845-
New Castle-Salem-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 2 AM
EDT SUNDAY...

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

.DAY ONE...Today and Tonight.

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

   Flash Flood Watch.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

NJZ012>014-120845-
Middlesex-Western Monmouth-Eastern Monmouth-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 AM
EDT SUNDAY...

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

.DAY ONE...Today and Tonight.

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

   Flash Flood Watch.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

DEZ002>004-NJZ020>027-120845-
Kent-Inland Sussex-Delaware Beaches-Ocean-Cumberland-Atlantic-
Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-
433 AM EDT Sat Aug 11 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 AM
EDT SUNDAY...

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

.DAY ONE...Today and 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.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

MDZ008-012-015-019-020-120845-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-
433 AM EDT Sat Aug 11 2018

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and Tonight.

The probability of widespread hazardous weather is low.

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

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-450>455-120845-
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-
433 AM EDT Sat Aug 11 2018

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

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

CMS

In the hours before

Local storm report, Aug 11, 5:55 AM EDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 AM EDT SAT AUG 11 2018

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

0553 AM     FLASH FLOOD      GARFIELD                40.43N  76.04W
08/11/2018                   BERKS              PA   SOCIAL MEDIA

            VEHICLE STUCK IN FLOOD WATERS AND A WATER RESCUE IN
            PROGRESS AT PLUM CREEK ROAD AND BLOOMSBURG ROAD IN PENN
            TWP.

&&

EVENT NUMBER PHI1801230

CMS

Local storm report, Aug 11, 6:21 AM EDT, 4 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
621 AM EDT SAT AUG 11 2018

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

0618 AM     FLOOD            1 WSW WASHINGTON        40.76N  74.99W
08/11/2018                   WARREN             NJ   SOCIAL MEDIA

            FLOODING ON WEST WASHINGTON AVENUE IN WASHINGTON BORO.

&&

EVENT NUMBER PHI1801231

CMS

Local storm report, Aug 11, 6:36 AM EDT, 4 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
636 AM EDT SAT AUG 11 2018

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

0623 AM     FLOOD            1 SE DAUBERVILLE        40.46N  75.97W
08/11/2018                   BERKS              PA   DEPT OF HIGHWAYS

            FLOODING ON STATE HIGHWAY 61 BETWEEN INDIAN MANOR ROAD
            AND BELLEMANS CHURCH ROAD. ALL LANES CLOSED.

&&

EVENT NUMBER PHI1801232

CMS

Local storm report, Aug 11, 7:47 AM EDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
747 AM EDT SAT AUG 11 2018

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

0705 AM     FLASH FLOOD      1 NE NORTH PLAINFIELD   40.63N  74.43W
08/11/2018                   SOMERSET           NJ   CO-OP OBSERVER

            MULTIPLE WATER RESCUES OCCURING AT ROUTE 22 AND
            WESTERVELT AVE.

&&

EVENT NUMBER PHI1801233

STAARMANN

Local storm report, Aug 11, 7:55 AM EDT, 2 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
755 AM EDT SAT AUG 11 2018

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

0726 AM     FLASH FLOOD      1 E NORTH PLAINFIELD    40.62N  74.43W
08/11/2018                   SOMERSET           NJ   911 CALL CENTER

            WATER RESCUES OCCURING AT WATCHUNG AVENUE AND PEARL
            STREET.

&&

EVENT NUMBER PHI1801234

STAARMANN

Local storm report, Aug 11, 8:34 AM EDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
834 AM EDT SAT AUG 11 2018

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

0830 AM     FLOOD            1 NNW MELROSE           40.50N  74.30W
08/11/2018                   MIDDLESEX          NJ   DEPT OF HIGHWAYS

            GARDEN STATE PARKWAY NORTHBOUND CLOSED AT EXIT 125 -
            CHEVALIER AVENUE. 2 RIGHT LANES BLOCKED DUE TO FLOODING.

&&

EVENT NUMBER PHI1801235

STAARMANN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 3:24 AM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more	20 hr
Aug 11, 4:26 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	24 hr
Aug 11, 5:27 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Warren	4 hr
Aug 11, 6:06 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	6 hr
Aug 11, 6:31 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	7 hr
Aug 11, 7:16 AM EDT	Flash Flood Warning	PHI	Middlesex, Somerset	4 hr
Aug 11, 11:29 AM EDT	Areal Flood Advisory	PHI	Atlantic	4 hr
Aug 11, 11:46 AM EDT	Special Marine Warning	PHI		119 min
Aug 11, 11:55 AM EDT	Special Weather Statement	PHI	Burlington	35 min
Aug 11, 12:27 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Ocean	4 hr
Aug 11, 12:39 PM EDT	Special Weather Statement	PHI	Ocean	36 min
Aug 11, 12:55 PM EDT	Special Marine Warning	PHI		65 min
Aug 11, 1:07 PM EDT	Flash Flood Warning	PHI	Atlantic, Cape May	4 hr
Aug 11, 1:26 PM EDT	Special Marine Warning	PHI		2 hr
Aug 11, 1:42 PM EDT	Special Marine Warning	PHI		2 hr
Aug 11, 1:51 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	39 min
Aug 11, 2:00 PM EDT	Flash Flood Warning	PHI	Warren	9 hr
Aug 11, 2:05 PM EDT	Special Weather Statement	PHI	Cape May	25 min
Aug 11, 2:06 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Aug 11, 2:19 PM EDT	Special Marine Warning	PHI		86 min
Aug 11, 2:20 PM EDT	Areal Flood Advisory	PHI	Cape May, Cumberland	3 hr
Aug 11, 2:30 PM EDT	Flash Flood Warning	PHI	Hunterdon, Morris, Warren	3 hr
Aug 11, 2:46 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	3 hr
Aug 11, 2:58 PM EDT	Special Weather Statement	PHI	Cumberland	47 min
Aug 11, 3:06 PM EDT	Flash Flood Warning	PHI	Warren	4 hr
Aug 11, 3:13 PM EDT	Special Weather Statement	PHI	Hunterdon	47 min
Aug 11, 3:23 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex	3 hr
Aug 11, 3:24 PM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	51 min
Aug 11, 3:32 PM EDT	Flash Flood Warning	PHI	Atlantic	3 hr
Aug 11, 3:47 PM EDT	Flash Flood Warning	PHI	Morris	3 hr
Aug 11, 4:11 PM EDT	Special Marine Warning	PHI		2 hr
Aug 11, 4:28 PM EDT	Special Marine Warning	PHI		2 hr
Aug 11, 5:00 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	3 hr
Aug 11, 5:26 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Warren	4 hr
Aug 11, 5:36 PM EDT	Areal Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	4 hr
Aug 11, 6:11 PM EDT	Special Marine Warning	PHI		2 hr
Aug 11, 6:12 PM EDT	Flash Flood Warning	PHI	Salem	3 hr
Aug 11, 7:35 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cumberland	3 hr
Aug 11, 7:46 PM EDT	River Flood Warning	PHI	Essex, Morris, Passaic	4 days
Aug 11, 2:25 AM EDT	Special Weather Statement	PHI	Berks	65 min
Aug 11, 3:26 AM EDT	Special Weather Statement	PHI	Berks	64 min
Aug 11, 4:17 AM EDT	Areal Flood Advisory	PHI	Berks	4 hr
Aug 11, 5:19 AM EDT	Flash Flood Warning	PHI	Berks	3 hr
Aug 11, 12:16 PM EDT	Special Weather Statement	PHI	Chester	29 min
Aug 11, 12:48 PM EDT	Areal Flood Advisory	PHI	Chester	3 hr
Aug 11, 1:20 PM EDT	Areal Flood Advisory	PHI	Chester, Montgomery	3 hr
Aug 11, 1:33 PM EDT	Flash Flood Warning	PHI	Chester, Montgomery	4 hr
Aug 11, 1:40 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Aug 11, 1:48 PM EDT	Flash Flood Warning	PHI	Delaware, Philadelphia	4 hr
Aug 11, 2:14 PM EDT	Flash Flood Warning	PHI	Bucks	3 hr
Aug 11, 2:26 PM EDT	Special Weather Statement	PHI	Bucks, Philadelphia	34 min
Aug 11, 2:42 PM EDT	Special Weather Statement	PHI	Bucks	33 min
Aug 11, 3:50 PM EDT	Areal Flood Advisory	PHI	Berks, Montgomery	115 min
Aug 11, 4:19 PM EDT	Areal Flood Advisory	PHI	Chester	3 hr
Aug 11, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Chester	29 min
Aug 11, 4:47 PM EDT	Special Weather Statement	PHI	Montgomery	28 min
Aug 11, 4:52 PM EDT	Areal Flood Advisory	PHI	Carbon, Lehigh	2 hr
Aug 11, 5:58 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	5 hr
Aug 11, 6:13 PM EDT	Special Weather Statement	PHI	Chester	32 min
Aug 11, 1:23 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	37 min
Aug 11, 5:20 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	4 hr
Aug 11, 6:08 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	52 min
Aug 11, 6:45 PM EDT	Flash Flood Warning	PHI	Kent	5 hr
Aug 11, 6:55 PM EDT	Severe Thunderstorm Warning	PHI	Kent	50 min
Aug 11, 7:42 PM EDT	Special Weather Statement	PHI	Kent	48 min

Nearby

Areal Flood Advisories in New Jersey, 2018 Every areal flood advisory in 2018

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.