Alert archive / Massachusetts / Dense Fog Advisories in 2021

Dense Fog Advisory 1, NWS Boston/Norton, MA

March 25, 20215 counties in Massachusetts; Newport County, Washington County, Rhode Island

NWS Boston/Norton, MA issued this dense fog advisory at Mar 25, 2021, 7:57 PM EDT for 5 counties in Massachusetts; Newport County, Washington County, Rhode Island. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Mar 25, 2021, 7:57 PM EDT (23:57 UTC)
Expired: Mar 26, 2021, 12:00 PM EDT
In force: 16 hr
Issued by: NWS Boston/Norton, MA

Counties Barnstable County, MA, Bristol County, MA, Dukes County, MA, Nantucket County, MA, Plymouth County, MA, Newport County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 51 km from the middle of the area, began a volume at 23:58 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 Boston/Norton, MA wrote its last area forecast discussion before this dense fog advisory went out at Mar 25, 4:36 PM EDT, 3 hours 21 minutes earlier.

Area forecast discussion, Mar 25, 4:36 PM EDT, 3 hours 21 minutes before

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Hazardous weather outlook, Mar 25, 4:22 PM EDT, 3 hours 35 minutes before

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The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 25, 3:23 AM EDT	Gale Watch	BOX		24 hr
Mar 25, 3:56 PM EDT	Gale Warning	BOX		36 hr
Mar 25, 3:57 PM EDT	Wind Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more	36 hr

Nearby

Dense Fog Advisories in Massachusetts, 2021 Dense Fog Advisories in Rhode Island, 2021 Every dense fog advisory in 2021

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.