Alert archive / Massachusetts / Heat Advisories in 2025

Heat Advisory 2, NWS Boston/Norton, MA

June 21, 202510 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this heat advisory at Jun 21, 2025, 2:04 AM EDT for 10 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Jun 22, 2025, 11:00 AM EDT. It was in force for 3 days.

The area

The counties it named.

The facts

Issued: Jun 21, 2025, 2:04 AM EDT (06:04 UTC)
In effect from: Jun 22, 2025, 11:00 AM EDT
Expired: Jun 25, 2025, 7:00 PM EDT
In force: 3 days
Issued by: NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Barnstable County, MA, Bristol County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 39 km from the middle of the area, began a volume at 06:05 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 heat 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 heat advisory went out at Jun 20, 3:30 PM EDT, 10 hours 34 minutes earlier.

Area forecast discussion, Jun 20, 3:30 PM EDT, 10 hours 34 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
Jun 21, 2:04 AM EDT	Extreme Heat Warning	BOX	Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more	4 days
Jun 21, 3:20 PM EDT	Small Craft Advisory	BOX		35 hr

Nearby

Heat Advisories in Massachusetts, 2025 Heat Advisories in Rhode Island, 2025 Heat Advisories in Connecticut, 2025 Every heat advisory in 2025

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.