Alert archive / New Jersey / Dense Fog Advisories in 2026
Dense Fog Advisory 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this dense fog advisory at Jan 17, 2026, 8:17 PM EST for 12 counties in New Jersey; 8 counties in Pennsylvania. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jan 17, 2026, 8:17 PM EST (01:17 UTC)
- Expired
- Jan 18, 2026, 12:00 AM EST
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 01:18 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 17, 2:52 PM EST, 5 hours 25 minutes earlier.
Area forecast discussion, Jan 17, 2:52 PM EST, 5 hours 25 minutes before
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</html>Hazardous weather outlook, Jan 17, 5:19 AM EST, 14 hours 58 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 519 AM EST Sat Jan 17 2026 MDZ012-015-019-020-181030- Kent MD-Queen Annes-Talbot-Caroline- 519 AM EST Sat Jan 17 2026 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. Light snowfall may occur (15-25% chance) this morning in the Eastern Shore. Little to no accumulation is expected. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a 50-70% chance of accumulating snowfall on Sunday. Snowfall amounts up to 1" are possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. AKL/Hoeflich
In the hours before
Local storm report, Jan 17, 5:37 PM EST, 2 hours 40 minutes before
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</html>Special weather statement, Jan 17, 5:50 PM EST, 2 hours 27 minutes before
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</html>Local storm report, Jan 17, 6:13 PM EST, 2 hours 4 minutes before
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</html>Local storm report, Jan 17, 6:17 PM EST, 2 hours before
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</p>
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Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Local storm report, Jan 17, 6:47 PM EST, 1 hour 30 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</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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</html>Local storm report, Jan 17, 7:48 PM EST, 29 minutes before
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<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<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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</html>The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 2:42 AM EST | Small Craft Advisory | PHI | 67 hr |
Nearby
Dense Fog Advisories in New Jersey, 2026Dense Fog Advisories in Pennsylvania, 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.