Alert archive / New Jersey / Dense Fog Advisories in 2026
Dense Fog Advisory 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this dense fog advisory at Jan 7, 2026, 12:12 AM EST for 16 counties in New Jersey; 10 counties in Pennsylvania; Kent County, New Castle County, Delaware. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jan 7, 2026, 12:12 AM EST (05:12 UTC)
- Expired
- Jan 7, 2026, 8:31 AM EST
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 28 counties
Kent County, DE, New Castle County, DE, 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, Morris County, NJ, Ocean 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), 61 km from the middle of the area, began a volume at 05:13 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 Jan 6, 6:38 PM EST, 5 hours 34 minutes earlier.
Area forecast discussion, Jan 6, 6:38 PM EST, 5 hours 34 minutes before
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</html>Hazardous weather outlook, Jan 6, 5:05 AM EST, 19 hours 7 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 505 AM EST Tue Jan 6 2026 MDZ012-015-019-020-071015- Kent MD-Queen Annes-Talbot-Caroline- 505 AM EST Tue Jan 6 2026 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 12:15 AM EST | Marine Dense Fog Advisory | PHI | 8 hr |
Nearby
Dense Fog Advisories in New Jersey, 2026Dense Fog Advisories in Pennsylvania, 2026Dense Fog Advisories in Delaware, 2026Every dense fog advisory in 2026
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.