Alert archive / Massachusetts / Rip Current Statements in 2026
Rip Current Statement 11, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this rip current statement at Aug 23, 2026, 1:06 PM EDT for Dukes County, Nantucket County, Massachusetts. It took effect at Aug 24, 2026, 8:00 AM EDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2026, 1:06 PM EDT (17:06 UTC)
- In effect from
- Aug 24, 2026, 8:00 AM EDT
- Expired
- Aug 24, 2026, 6:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Boston/Norton, MA
Counties Dukes County, MA, Nantucket County, MA
The radar
The Boston radar (KBOX), 95 km from the middle of the area, began a volume at 17:10 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 12:00Z, 5.1 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
- 338 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 468 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted.
904 WHUS41 KBOX 231706 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 106 PM EDT Sun Aug 23 2026 MAZ024-240615- /O.NEW.KBOX.RP.S.0011.260824T1200Z-260824T2200Z/ Nantucket MA- 106 PM EDT Sun Aug 23 2026 ...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON... * WHAT...Dangerous rip currents expected. * WHERE...Nantucket MA County. * WHEN...From Monday morning through Monday afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ Frank
3 follow-up statements
556 WHUS41 KBOX 231857 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 257 PM EDT Sun Aug 23 2026 MAZ024-240900- /O.CON.KBOX.RP.S.0011.260824T1200Z-260824T2200Z/ Nantucket MA- 257 PM EDT Sun Aug 23 2026 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON... * WHAT...Dangerous rip currents expected. * WHERE...Nantucket MA County. * WHEN...From Monday morning through Monday afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ Frank
627 WHUS41 KBOX 240557 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 157 AM EDT Mon Aug 24 2026 MAZ023-242200- /O.EXA.KBOX.RP.S.0011.260824T1200Z-260824T2200Z/ Dukes MA- 157 AM EDT Mon Aug 24 2026 ...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON... * WHAT...Dangerous rip currents expected. * WHERE...Dukes MA County. * WHEN...From 8 AM EDT this morning through this afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ MAZ024-242200- /O.CON.KBOX.RP.S.0011.260824T1200Z-260824T2200Z/ Nantucket MA- 157 AM EDT Mon Aug 24 2026 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON... * WHAT...Dangerous rip currents expected. * WHERE...Nantucket MA County. * WHEN...From 8 AM EDT this morning through this afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
591 WHUS41 KBOX 241725 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 125 PM EDT Mon Aug 24 2026 MAZ023-024-242200- /O.CON.KBOX.RP.S.0011.000000T0000Z-260824T2200Z/ Dukes MA-Nantucket MA- 125 PM EDT Mon Aug 24 2026 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Dukes MA and Nantucket MA Counties. * WHEN...Until 6 PM EDT this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 12:15 PM EDT | Special Marine Warning | BOX | 60 min | |
| Aug 23, 1:07 PM EDT | Special Marine Warning | BOX | 53 min |
Nearby
Rip Current Statements in Massachusetts, 2026Every rip current statement 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.