Alert archive / New Jersey / Areal Flood Advisories in 2018

Areal Flood Advisory 328, NWS Philadelphia/Mount Holly

October 12, 20184 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Oct 12, 2018, 12:50 AM EDT for 4 counties in New Jersey. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Oct 12, 2018, 12:50 AM EDT (04:50 UTC)
Expired: Oct 12, 2018, 3:20 AM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 15 km from the middle of the area, began a volume at 04:49 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, 4.8 hours before the alert went out and 160 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: 1 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: -48 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 Oct 11, 9:34 PM EDT, 3 hours 16 minutes earlier.

Area forecast discussion, Oct 11, 9:34 PM EDT, 3 hours 16 minutes before

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Hazardous weather outlook, Oct 12, 12:22 AM EDT, 28 minutes before

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In the hours before

Special weather statement, Oct 11, 8:09 PM EDT, 4 hours 41 minutes before

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Special weather statement, Oct 11, 8:41 PM EDT, 4 hours 9 minutes before

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Special weather statement, Oct 11, 9:10 PM EDT, 3 hours 40 minutes before

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Local storm report, Oct 11, 10:22 PM EDT, 2 hours 28 minutes before

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Local storm report, Oct 12, 12:47 AM EDT, 3 minutes before

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Local storm report, Oct 12, 12:49 AM EDT, 1 minute before

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      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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
Oct 11, 8:09 PM EDT	Special Weather Statement	PHI	Salem	36 min
Oct 11, 8:27 PM EDT	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	8 hr
Oct 11, 8:41 PM EDT	Special Weather Statement	PHI	Gloucester, Salem	34 min
Oct 11, 9:10 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	35 min
Oct 11, 9:43 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	8 hr
Oct 11, 10:45 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	3 hr
Oct 11, 11:54 PM EDT	High Wind Warning	PHI	Cape May	9 hr
Oct 12, 12:08 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	4 hr
Oct 12, 12:14 AM EDT	Storm Warning	PHI		9 hr
Oct 12, 1:15 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	40 min
Oct 12, 1:52 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	4 hr
Oct 12, 2:55 AM EDT	Areal Flood Advisory	PHI	Gloucester, Hunterdon, Mercer, Middlesex, Somerset, Warren	2 hr
Oct 12, 3:17 AM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Monmouth, Ocean	4 hr
Oct 12, 3:46 AM EDT	Areal Flood Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	7 hr
Oct 12, 5:32 AM EDT	Areal Flood Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	4 hr
Oct 12, 7:02 AM EDT	Areal Flood Warning	PHI	Burlington, Mercer, Monmouth, Ocean	4 hr
Oct 12, 11:42 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean	4 hr
Oct 12, 11:45 AM EDT	Small Craft Advisory	PHI		12 hr
Oct 12, 3:20 PM EDT	River Flood Warning	PHI	Burlington	37 hr
Oct 11, 10:06 PM EDT	Flash Flood Warning	PHI	Kent	6 hr
Oct 11, 11:47 PM EDT	Flash Flood Warning	PHI	Kent, Sussex	4 hr
Oct 12, 3:28 AM EDT	Areal Flood Warning	PHI	Kent, Sussex	6 hr
Oct 12, 3:36 AM EDT	Areal Flood Warning	PHI	Kent	6 hr
Oct 12, 2:46 PM EDT	Areal Flood Warning	PHI	Kent	7 hr

Nearby

Areal Flood Advisories in New Jersey, 2018 Every areal flood advisory in 2018

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.