Alert archive / New Jersey / Coastal Flood Advisories in 2011

Coastal Flood Advisory 44, NWS Philadelphia/Mount Holly

September 11, 2011Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this coastal flood advisory at Sep 11, 2011, 7:30 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It took effect at Sep 12, 2011, 12:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Sep 11, 2011, 7:30 PM EDT (23:30 UTC)
In effect from: Sep 12, 2011, 12:00 AM EDT
Expired: Sep 12, 2011, 5:00 AM EDT
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 23:32 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, 11.5 hours before the alert went out and 217 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: 1107 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 81 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 11, 4:17 PM EDT, 3 hours 13 minutes earlier.

Area forecast discussion, Sep 11, 4:17 PM EDT, 3 hours 13 minutes before

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Hazardous weather outlook, Sep 11, 4:19 PM EDT, 3 hours 11 minutes before

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In the hours before

Special weather statement, Sep 11, 1:54 PM EDT, 5 hours 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
154 PM EDT SUN SEP 11 2011

DEZ002-111900-
KENT DE-
154 PM EDT SUN SEP 11 2011

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF KENT COUNTY...

AT 152 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 8 MILES SOUTHWEST OF DOVER...MOVING EAST AT 10
MPH. THE THUNDERSTORM WILL BE NEAR WOODSIDE AND CAMDEN AROUND 215
PM...WOODSIDE EAST AND VIOLA AROUND 230 PM...MAGNOLIA AND RIVERVIEW
AROUND 245 PM AND FREDERICA AROUND 300 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

LAT...LON 3918 7543 3893 7544 3900 7572 3921 7572

IOVINO

Special weather statement, Sep 11, 3:09 PM EDT, 4 hours 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
309 PM EDT SUN SEP 11 2011

DEZ001-002-NJZ020>023-027-112030-
NEW CASTLE-KENT-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...JACKSON...
MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...
WHARTON STATE FOREST
309 PM EDT SUN SEP 11 2011

...SCATTERED SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN...

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO AFFECT PARTS
OF NORTHERN AND CENTRAL DELAWARE AND SOUTHEASTERN NEW JERSEY THIS
AFTERNOON.

THE SHOWERS AND THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL, PERHAPS
AN INCH OR TWO IN A SHORT PERIOD OF TIME AT SOME LOCATIONS.

THE HEAVY RAIN MAY RESULT IN FLOODING OF ROADWAYS AND IN AREAS OF
POOR DRAINAGE.

IF YOU WILL BE DRIVING IN THE AREA, BE PREPARED FOR REDUCED
VISIBILITY DUE TO THE HEAVY RAIN. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN YOU THINK IT
IS. YOU WILL BE PUTTING YOURSELF IN DANGER AND YOU MAY DAMAGE YOUR
VEHICLE.

IOVINO

Special weather statement, Sep 11, 3:52 PM EDT, 3 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
352 PM EDT SUN SEP 11 2011

DEZ001-NJZ016-112045-
NEW CASTLE DE-SALEM NJ-
352 PM EDT SUN SEP 11 2011

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF NEW CASTLE AND SALEM
COUNTIES...

AT 350 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SAINT GEORGES IN DELAWARE...MOVING NORTH AT
15 MPH. THE THUNDERSTORM WILL BE NEAR SALEM AROUND 405 PM...DELAWARE
CITY AROUND 410 PM...BEAR AROUND 420 PM...NEW CASTLE...PENNSVILLE
AND BROOKSIDE AROUND 430 PM AND WILMINGTON MANOR AROUND 435 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

WIND GUSTS TO 35 MPH ARE POSSIBLE WITH THIS STORM.

EXPECT SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING.

LAT...LON 3974 7576 3974 7542 3944 7550 3945 7554
      3948 7556 3950 7557 3952 7554 3956 7553
      3958 7554 3958 7556 3946 7558 3943 7555
      3943 7568

IOVINO

Special weather statement, Sep 11, 4:42 PM EDT, 2 hours 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
442 PM EDT SUN SEP 11 2011

NJZ019-027-112215-
NORTHWESTERN BURLINGTON NJ-SOUTHEASTERN BURLINGTON NJ-
442 PM EDT SUN SEP 11 2011

...SCATTERED SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN...

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO AFFECT PARTS OF
CENTRAL BURLINGTON COUNTY INTO THE EARLY EVENING.

THE SHOWERS AND THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL, PERHAPS AN
INCH OR TWO IN A SHORT PERIOD OF TIME AT SOME LOCATIONS.

THE HEAVY RAIN MAY RESULT IN FLOODING OF ROADWAYS AND IN AREAS OF
POOR DRAINAGE.

IF YOU WILL BE DRIVING IN THE AREA, BE PREPARED FOR REDUCED
VISIBILITY DUE TO THE HEAVY RAIN. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN YOU THINK IT
IS. YOU WILL BE PUTTING YOURSELF IN DANGER AND YOU MAY DAMAGE YOUR
VEHICLE.

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 11, 4:01 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester	12 hr
Sep 11, 4:14 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cumberland, Ocean	2 hr
Sep 11, 5:10 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Ocean	81 min
Sep 11, 2:00 AM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	3 hr
Sep 11, 7:55 PM EDT	Areal Flood Advisory	PHI	Berks	3 hr

Nearby

Coastal Flood Advisories in New Jersey, 2011 Coastal Flood Advisories in Pennsylvania, 2011 Every coastal flood advisory in 2011

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.