Alert archive / Massachusetts / High Surf Advisories in 2026
High Surf Advisory 3, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this high surf advisory at Sep 24, 2026, 2:08 AM EDT for 7 counties in Massachusetts. It took effect at Sep 25, 2026, 5:00 AM EDT. It was in force for 63 hr.
The area
The counties it named.
The facts
- Issued
- Sep 24, 2026, 2:08 AM EDT (06:08 UTC)
- In effect from
- Sep 25, 2026, 5:00 AM EDT
- Expired
- Sep 27, 2026, 8:00 PM EDT
- In force
- 63 hr
- Issued by
- NWS Boston/Norton, MA
Counties Barnstable County, MA, Dukes County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA
The radar
The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 06:09 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 6.1 hours before the alert went out and 216 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1164 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -131 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf 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 high surf advisory went out at Sep 24, 2:05 AM EDT, 3 minutes earlier.
Area forecast discussion, Sep 24, 2:05 AM EDT, 3 minutes before
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</html>The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 24, 12:06 PM EDT | Storm Warning | BOX | 62 hr | |
| Sep 24, 12:38 PM EDT | High Wind Warning | BOX | Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 2 more | 62 hr |
| Sep 24, 12:38 PM EDT | Wind Advisory | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more | 71 hr |
Nearby
High Surf Advisories in Massachusetts, 2026Every high surf 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.