Alert archive / New Jersey / Tropical Storm Watches in 2016

Tropical Storm Watch 1009, NWS Philadelphia/Mount Holly

September 1, 20166 counties in New Jersey

NWS Philadelphia/Mount Holly issued this tropical storm watch at Sep 1, 2016, 4:40 PM EDT for 6 counties in New Jersey. It was in force for 43 hr.

The area

The counties it named.

The facts

Issued: Sep 1, 2016, 4:40 PM EDT (20:40 UTC)
Expired: Sep 3, 2016, 11:59 AM EDT
In force: 43 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 14 km from the middle of the area, began a volume at 20:40 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, 8.7 hours before the alert went out and 179 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: 363 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tropical storm watch 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 tropical storm watch went out at Sep 1, 1:29 PM EDT, 3 hours 11 minutes earlier.

Area forecast discussion, Sep 1, 1:29 PM EDT, 3 hours 11 minutes before

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Hazardous weather outlook, Sep 1, 4:24 PM EDT, 16 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 1:20 AM EDT	Areal Flood Advisory	PHI	Salem	4 hr
Aug 31, 8:05 PM EDT	Special Weather Statement	PHI	Cecil	40 min

Nearby

Tropical Storm Watches in New Jersey, 2016 Every tropical storm watch 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.