Alert archive / Massachusetts / Dense Fog Advisories in 2018

Dense Fog Advisory 13, NWS Boston/Norton, MA

April 25, 20185 counties in Massachusetts; Newport County, Washington County, Rhode Island

NWS Boston/Norton, MA issued this dense fog advisory at Apr 25, 2018, 7:21 PM EDT for 5 counties in Massachusetts; Newport County, Washington County, Rhode Island. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Apr 25, 2018, 7:21 PM EDT (23:21 UTC)
Expired: Apr 26, 2018, 9:00 AM EDT
In force: 14 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 23:20 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 Apr 25, 7:11 PM EDT, 10 minutes earlier.

Area forecast discussion, Apr 25, 7:11 PM EDT, 10 minutes before

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Hazardous weather outlook, Apr 25, 4:17 PM EDT, 3 hours 4 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
Apr 25, 4:06 AM EDT	Small Craft Advisory	BOX		3 days

Nearby

Dense Fog Advisories in Massachusetts, 2018 Dense Fog Advisories in Rhode Island, 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.