Alert archive / New Jersey / Dense Fog Advisories in 2018

Dense Fog Advisory 17, NWS Philadelphia/Mount Holly

December 2, 201813 counties in New Jersey; 10 counties in Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this dense fog advisory at Dec 2, 2018, 8:24 AM EST for 13 counties in New Jersey; 10 counties in Pennsylvania; New Castle County, Delaware. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Dec 2, 2018, 8:24 AM EST (13:24 UTC)
Expired: Dec 3, 2018, 5:22 AM EST
In force: 21 hr
Issued by: NWS Philadelphia/Mount Holly

All 24 counties

New Castle County, DE, Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 13:24 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.

What forecasters said that day

The local office's own words before this dense fog 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 dense fog advisory went out at Dec 2, 3:41 AM EST, 4 hours 43 minutes earlier.

Area forecast discussion, Dec 2, 3:41 AM EST, 4 hours 43 minutes before

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Hazardous weather outlook, Dec 2, 8:14 AM EST, 10 minutes before

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In the hours before

Special weather statement, Dec 2, 8:07 AM EST, 17 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
Dec 2, 3:17 AM EST	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Salem	9 hr
Dec 2, 3:22 AM EST	Marine Dense Fog Advisory	PHI		24 hr

Nearby

Dense Fog Advisories in New Jersey, 2018 Dense Fog Advisories in Pennsylvania, 2018 Dense Fog Advisories in Delaware, 2018 Every dense fog 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; radar from the NEXRAD Level II archive.