Alert archive / New Jersey / Areal Flood Advisories in 2017

Areal Flood Advisory 31, NWS Philadelphia/Mount Holly

June 17, 20174 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 17, 2017, 11:19 AM EDT for 4 counties in New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jun 17, 2017, 11:19 AM EDT (15:19 UTC)
Expired: Jun 17, 2017, 3:15 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 15:20 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, 3.3 hours before the alert went out and 151 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: 25 J/kg
Mixed-layer CIN: -167 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 52 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 Jun 17, 10:37 AM EDT, 42 minutes earlier.

Area forecast discussion, Jun 17, 10:37 AM EDT, 42 minutes before

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Hazardous weather outlook, Jun 17, 5:32 AM EDT, 5 hours 47 minutes before

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In the hours before

Special weather statement, Jun 17, 9:52 AM EDT, 1 hour 27 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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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
Jun 16, 9:07 PM EDT	Marine Dense Fog Advisory	PHI		14 hr
Jun 17, 3:52 AM EDT	Small Craft Advisory	PHI		4 days
Jun 17, 5:27 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	64 hr
Jun 17, 5:10 PM EDT	Areal Flood Advisory	PHI	Burlington	4 hr
Jun 17, 5:15 PM EDT	Special Weather Statement	PHI	Burlington	45 min
Jun 17, 5:42 PM EDT	Special Weather Statement	PHI	Monmouth	63 min
Jun 17, 7:48 PM EDT	Special Weather Statement	PHI	Cecil	57 min

Nearby

Areal Flood Advisories in New Jersey, 2017 Every areal flood advisory in 2017

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.