Alert archive / Massachusetts / High Surf Advisories in 2021
High Surf Advisory 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this high surf advisory at Sep 9, 2021, 1:55 PM EDT for Newport County, Washington County, Rhode Island; 6 counties in Massachusetts. It was in force for 53 hr.
The area
The counties it named.
The facts
- Issued
- Sep 9, 2021, 1:55 PM EDT (17:55 UTC)
- Expired
- Sep 11, 2021, 7:00 PM EDT
- In force
- 53 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, Newport County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 34 km from the middle of the area, began a volume at 18:00 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, 5.9 hours before the alert went out and 196 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
- 483 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 600 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.9
The text
As transmitted.
707 WHUS41 KBOX 091755 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 155 PM EDT Thu Sep 9 2021 MAZ007-019-022>024-RIZ006>008-100800- /O.CAN.KBOX.RP.S.0006.000000T0000Z-210910T0000Z/ /O.NEW.KBOX.SU.Y.0002.210909T1755Z-210910T2300Z/ Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Washington RI-Newport RI-Block Island RI- 155 PM EDT Thu Sep 9 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 7 PM EDT FRIDAY... ...HIGH RIP CURRENT RISK IS CANCELLED... * WHAT...Large breaking waves of 5 to 10 feet in the surf zone. * WHERE...In Massachusetts, Eastern Essex MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. In Rhode Island, Washington RI, Newport RI and Block Island RI Counties. * WHEN...Until 7 PM EDT Friday. * IMPACTS...Very dangerous swimming and surfing conditions. * ADDITIONAL DETAILS...Large breaking waves will also result in very dangerous conditions for anyone on rocks and/or jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ Nocera
3 follow-up statements
040 WHUS41 KBOX 100751 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 351 AM EDT Fri Sep 10 2021 MAZ007-019-022>024-RIZ006>008-102100- /O.CON.KBOX.SU.Y.0002.000000T0000Z-210910T2300Z/ Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Washington RI-Newport RI-Block Island RI- 351 AM EDT Fri Sep 10 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... * WHAT...Large breaking waves of 5 to 10 feet in the surf zone. * WHERE...In Massachusetts, Eastern Plymouth MA, Eastern Essex MA, Barnstable MA, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI, Washington RI and Newport RI Counties. * WHEN...Until 7 PM EDT this evening. * IMPACTS...Very dangerous swimming and surfing conditions due to high surf and strong rip currents. * ADDITIONAL DETAILS...Large breaking waves will also result in very dangerous conditions for anyone on rocks and/or jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
586 WHUS41 KBOX 101741 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 141 PM EDT Fri Sep 10 2021 MAZ007-019-022>024-RIZ006>008-111000- /O.EXT.KBOX.SU.Y.0002.000000T0000Z-210911T2300Z/ Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Washington RI-Newport RI-Block Island RI- 141 PM EDT Fri Sep 10 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 7 PM EDT SATURDAY... * WHAT...High risk of dangerous rip currents and large breaking waves of 5 to 10 feet in the surf zone. * WHERE...In Massachusetts, Eastern Plymouth MA, Eastern Essex MA, Barnstable MA, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI, Washington RI and Newport RI Counties. * WHEN...Until 7 PM EDT Saturday. * IMPACTS...Very dangerous swimming and surfing conditions due to high surf and life threatening rip currents. * ADDITIONAL DETAILS...Large breaking waves will result in very dangerous conditions for anyone trying to view the surf from rocks or jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Most beaches are no longer staffed with lifeguards for the season. Obey any posted beach closures. Inexperienced swimmers should remain out of the water due to dangerous surf and rip current conditions. && $$
150 WHUS41 KBOX 110805 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 405 AM EDT Sat Sep 11 2021 MAZ007-019-022>024-RIZ006>008-112300- /O.CON.KBOX.SU.Y.0002.000000T0000Z-210911T2300Z/ Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Washington RI-Newport RI-Block Island RI- 405 AM EDT Sat Sep 11 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... * WHAT...High risk of dangerous rip currents and large breaking waves of 4 to 8 feet in the surf zone. * WHERE...In Massachusetts, Eastern Plymouth MA, Eastern Essex MA, Barnstable MA, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI, Washington RI and Newport RI Counties. * WHEN...Until 7 PM EDT this evening. * IMPACTS...Very dangerous swimming and surfing conditions due to high surf and life threatening rip currents. * ADDITIONAL DETAILS...Large breaking waves will result in very dangerous conditions for anyone trying to view the surf from rocks or jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Most beaches are no longer staffed with lifeguards for the season. Obey any posted beach closures. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 2:57 AM EDT | Rip Current Statement | BOX | Newport, Washington | 11 hr |
| Sep 9, 5:04 AM EDT | Special Weather Statement | BOX | Providence | 41 min |
| Sep 8, 8:42 PM EDT | Special Weather Statement | BOX | Franklin | 48 min |
| Sep 8, 9:40 PM EDT | Small Craft Advisory | BOX | 5 hr | |
| Sep 9, 8:43 AM EDT | Special Marine Warning | BOX | 62 min | |
| Sep 9, 8:50 AM EDT | Special Weather Statement | BOX | Nantucket | 55 min |
| Sep 9, 11:06 AM EDT | Special Marine Warning | BOX | 54 min | |
| Sep 9, 1:57 PM EDT | Special Weather Statement | BOX | Dukes, Plymouth | 63 min |
| Sep 9, 2:53 PM EDT | Special Weather Statement | BOX | Barnstable, Nantucket | 82 min |
| Sep 9, 3:11 PM EDT | Special Marine Warning | BOX | 34 min | |
| Sep 9, 3:13 PM EDT | Special Weather Statement | BOX | Barnstable | 47 min |
| Sep 9, 3:46 PM EDT | Special Marine Warning | BOX | 29 min | |
| Sep 9, 7:30 PM EDT | Areal Flood Warning | BOX | Barnstable | 3 hr |
Nearby
High Surf Advisories in Massachusetts, 2021High Surf Advisories in Rhode Island, 2021Every high surf 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.