Alert archive / New Jersey / Coastal Flood Advisories in 2016

Coastal Flood Advisory 24, NWS Philadelphia/Mount Holly

September 30, 201610 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this coastal flood advisory at Sep 30, 2016, 1:40 AM EDT for 10 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania. It took effect at Sep 30, 2016, 7:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Sep 30, 2016, 1:40 AM EDT (05:40 UTC)
In effect from: Sep 30, 2016, 7:00 AM EDT
Expired: Sep 30, 2016, 2:16 PM EDT
In force: 7 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 41 km from the middle of the area, began a volume at 05:43 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, 5.7 hours before the alert went out and 211 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1819 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 302 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 coastal 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 coastal flood advisory went out at Sep 29, 9:39 PM EDT, 4 hours 1 minute earlier.

Area forecast discussion, Sep 29, 9:39 PM EDT, 4 hours 1 minute before

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Hazardous weather outlook, Sep 29, 10:34 PM EDT, 3 hours 6 minutes before

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In the hours before

Local storm report, Sep 29, 11:46 PM EDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1146 PM EDT THU SEP 29 2016

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

1047 PM     HEAVY RAIN       SMYRNA                  39.30N  75.61W
09/29/2016  M2.73 INCH       KENT               DE   DEOS

1047 PM     HEAVY RAIN       WOODSIDE                39.07N  75.57W
09/29/2016  M3.28 INCH       KENT               DE   DEOS

1048 PM     HEAVY RAIN       DOVER                   39.16N  75.52W
09/29/2016  M4.31 INCH       KENT               DE   DEOS

1048 PM     HEAVY RAIN       HARRINGTON              38.92N  75.57W
09/29/2016  M5.74 INCH       KENT               DE   DEOS

1048 PM     HEAVY RAIN       GREENWOOD               38.81N  75.59W
09/29/2016  M5.00 INCH       SUSSEX             DE   DEOS

1050 PM     HEAVY RAIN       HARBESON                38.72N  75.28W
09/29/2016  M12.20 INCH      SUSSEX             DE   DEOS

1051 PM     HEAVY RAIN       REHOBOTH BEACH          38.72N  75.08W
09/29/2016  M3.44 INCH       SUSSEX             DE   DEOS

1051 PM     HEAVY RAIN       SEAFORD                 38.65N  75.62W
09/29/2016  M3.28 INCH       SUSSEX             DE   DEOS

1051 PM     HEAVY RAIN       ELLENDALE               38.81N  75.42W
09/29/2016  M6.40 INCH       SUSSEX             DE   DEOS

1052 PM     HEAVY RAIN       LEWES                   38.78N  75.15W
09/29/2016  M6.27 INCH       SUSSEX             DE   DEOS

1052 PM     HEAVY RAIN       BETHANY BEACH           38.54N  75.07W
09/29/2016  M5.01 INCH       SUSSEX             DE   DEOS

1052 PM     HEAVY RAIN       STOCKLEY                38.64N  75.34W
09/29/2016  M9.39 INCH       SUSSEX             DE   DEOS

1053 PM     HEAVY RAIN       DELMAR                  38.46N  75.58W
09/29/2016  M5.73 INCH       SUSSEX             DE   DEOS

1053 PM     HEAVY RAIN       LAUREL                  38.55N  75.57W
09/29/2016  M4.70 INCH       SUSSEX             DE   DEOS

1057 PM     HEAVY RAIN       BRIDGETON               39.43N  75.23W
09/29/2016  M2.26 INCH       CUMBERLAND         NJ   MESONET

1130 PM     FLOOD            MILFORD CROSSING        38.93N  75.44W
09/29/2016                   KENT               DE   911 CALL CENTER

            MINOR FLOODING IN FLOOD PRONE AREAS.

&&

EVENT NUMBER PHI1602035
EVENT NUMBER PHI1602036
EVENT NUMBER PHI1602037
EVENT NUMBER PHI1602038
EVENT NUMBER PHI1602039
EVENT NUMBER PHI1602040
EVENT NUMBER PHI1602041
EVENT NUMBER PHI1602042
EVENT NUMBER PHI1602043
EVENT NUMBER PHI1602044
EVENT NUMBER PHI1602045
EVENT NUMBER PHI1602046
EVENT NUMBER PHI1602047
EVENT NUMBER PHI1602048
EVENT NUMBER PHI1602049
EVENT NUMBER PHI1602050

SFJ

Local storm report, Sep 29, 11:47 PM EDT, 1 hour 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1147 PM EDT THU SEP 29 2016

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

0808 PM     FLOOD            HARBESON                38.72N  75.28W
09/29/2016                   SUSSEX             DE   DEPT OF HIGHWAYS

            HUDSON ROAD FLOODED

&&

EVENT NUMBER PHI1602051

SFJ

Local storm report, Sep 30, 12:20 AM EDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1220 AM EDT FRI SEP 30 2016

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

1200 AM     HEAVY RAIN       CAPE MAY                38.94N  74.90W
09/30/2016  M3.74 INCH       CAPE MAY           NJ   CO-OP OBSERVER

            TOTAL FROM MIDNIGHT EDT TO MIDNIGHT EDT. NO SIGNIFICANT
            PONDING OF WATER NOTED

&&

EVENT NUMBER PHI1602052

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 30, 5:47 AM EDT	Small Craft Advisory	PHI		46 hr
Sep 30, 3:03 PM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	20 hr
Sep 30, 6:04 PM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	3 hr
Sep 30, 5:03 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Delaware, Lehigh, Montgomery	4 hr
Sep 30, 2:40 AM EDT	Areal Flood Warning	PHI	Caroline, Queen Anne's	4 hr
Sep 30, 3:34 AM EDT	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	4 hr
Sep 30, 6:44 AM EDT	Areal Flood Warning	PHI	Caroline, Queen Anne's	4 hr
Sep 30, 7:24 AM EDT	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	4 hr
Sep 30, 10:30 AM EDT	Areal Flood Warning	PHI	Caroline, Queen Anne's	4 hr
Sep 30, 2:29 PM EDT	Areal Flood Warning	PHI	Caroline, Queen Anne's	19 hr

Nearby

Coastal Flood Advisories in New Jersey, 2016 Coastal Flood Advisories in Pennsylvania, 2016 Every coastal flood advisory in 2016

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.