Alert archive / New Jersey / Areal Flood Advisories in 2013

Areal Flood Advisory 227, NWS Philadelphia/Mount Holly

November 27, 20135 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Nov 27, 2013, 4:08 AM EST for 5 counties in New Jersey. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Nov 27, 2013, 4:08 AM EST (09:08 UTC)
Expired: Nov 27, 2013, 10:00 AM EST
In force: 6 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 09:10 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, 9.1 hours before the alert went out and 154 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: 564 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 402 m²/s²
0-3 km storm-relative helicity: 371 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 Nov 27, 3:48 AM EST, 20 minutes earlier.

Area forecast discussion, Nov 27, 3:48 AM EST, 20 minutes before

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Hazardous weather outlook, Nov 27, 3:56 AM EST, 12 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
Nov 27, 5:57 AM EST	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Nov 27, 6:25 AM EST	Areal Flood Advisory	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	4 hr
Nov 27, 3:46 AM EST	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	6 hr
Nov 27, 4:33 AM EST	River Flood Warning	PHI	Delaware	5 hr
Nov 27, 6:08 AM EST	River Flood Warning	PHI	Chester	4 hr
Nov 27, 6:18 AM EST	Areal Flood Warning	PHI	Montgomery, Philadelphia	6 hr
Nov 27, 3:57 AM EST	River Flood Warning	PHI	New Castle	6 hr
Nov 27, 4:44 AM EST	Areal Flood Advisory	PHI	Kent	4 hr
Nov 27, 5:45 AM EST	River Flood Warning	PHI	New Castle	4 hr

Nearby

Areal Flood Advisories in New Jersey, 2013 Every areal flood advisory in 2013

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.