Alert archive / New Jersey / Dense Fog Advisories in 2022

Dense Fog Advisory 2, NWS Philadelphia/Mount Holly

February 2, 202213 counties in New Jersey; 5 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this dense fog advisory at Feb 2, 2022, 7:32 AM EST for 13 counties in New Jersey; 5 counties in Pennsylvania. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Feb 2, 2022, 7:32 AM EST (12:32 UTC)
Expired: Feb 2, 2022, 12:04 PM EST
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 12:31 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, 0.5 hours before the alert went out and 201 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: 621 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 85 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 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 Feb 2, 6:35 AM EST, 57 minutes earlier.

Area forecast discussion, Feb 2, 6:35 AM EST, 57 minutes before

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Hazardous weather outlook, Feb 2, 5:03 AM EST, 2 hours 29 minutes before

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In the hours before

Special weather statement, Feb 2, 5:54 AM EST, 1 hour 38 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
Feb 2, 3:09 PM EST	Marine Dense Fog Advisory	PHI		20 hr
Feb 2, 3:21 PM EST	Dense Fog Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	15 hr
Feb 2, 3:04 PM EST	Winter Storm Watch	PHI	Carbon, Monroe	12 hr

Nearby

Dense Fog Advisories in New Jersey, 2022 Dense Fog Advisories in Pennsylvania, 2022 Every dense fog advisory in 2022

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.