Alert archive / Massachusetts / Rip Current Statements in 2023

Rip Current Statement 7, NWS Boston/Norton, MA

September 17, 20236 counties in Massachusetts

NWS Boston/Norton, MA issued this rip current statement at Sep 17, 2023, 3:54 AM EDT for 6 counties in Massachusetts. It took effect at Sep 17, 2023, 8:00 AM EDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 17, 2023, 3:54 AM EDT (07:54 UTC)
In effect from
Sep 17, 2023, 8:00 AM EDT
Expired
Sep 17, 2023, 7:40 PM EDT
In force
12 hr
Issued by
NWS Boston/Norton, MA

Counties Barnstable 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 07:53 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

Gray, ME (KGYX), launched 00:00Z, 7.9 hours before the alert went out and 211 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.

Skew-T log-pSkew-T log-p diagram, Gray, ME at 00:00Z on 2023-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 00:00Z on 2023-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1367 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
486 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

076 
WHUS41 KBOX 170754
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
354 AM EDT Sun Sep 17 2023

MAZ007-015-016-019-180000-
/O.CAN.KBOX.SU.Y.0004.000000T0000Z-230917T1500Z/
/O.NEW.KBOX.RP.S.0007.230917T1200Z-230918T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-
354 AM EDT Sun Sep 17 2023

...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS EVENING...
...HIGH SURF ADVISORY IS CANCELLED...

* WHAT...Dangerous rip currents expected.

* WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA and 
  Eastern Plymouth MA Counties.

* WHEN...From 8 AM EDT this morning through 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.

&&

$$

MAZ022-024-180000-
/O.CAN.KBOX.SU.Y.0004.000000T0000Z-230917T1200Z/
/O.NEW.KBOX.RP.S.0007.230917T1200Z-230918T0000Z/
Barnstable MA-Nantucket MA-
354 AM EDT Sun Sep 17 2023

...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS EVENING...
...HIGH SURF ADVISORY IS CANCELLED...

* WHAT...Dangerous rip currents expected.

* WHERE...Barnstable MA and Nantucket MA Counties.

* WHEN...From 8 AM EDT this morning through 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.

&&

$$

MAZ020-021-023-RIZ006>008-170900-
/O.CAN.KBOX.SU.Y.0004.000000T0000Z-230917T1200Z/
Southern Bristol MA-Southern Plymouth MA-Dukes MA-Washington RI-
Newport RI-Block Island RI-
354 AM EDT Sun Sep 17 2023

...HIGH SURF ADVISORY IS CANCELLED...

Conditions have fallen below High Surf Advisory criteria. 

$$
3 follow-up statements
641 
WHUS41 KBOX 171423
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
1023 AM EDT Sun Sep 17 2023

MAZ007-015-016-019-022-024-180000-
/O.CON.KBOX.RP.S.0007.000000T0000Z-230918T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Nantucket MA-
1023 AM EDT Sun Sep 17 2023

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Dangerous rip currents expected.

* WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA and 
  Eastern Plymouth MA Counties.

* WHEN...Through 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.

&&

$$
775 
WHUS41 KBOX 171917
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
317 PM EDT Sun Sep 17 2023

MAZ007-015-016-019-022-024-180000-
/O.CON.KBOX.RP.S.0007.000000T0000Z-230918T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Nantucket MA-
317 PM EDT Sun Sep 17 2023

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Dangerous rip currents continue.

* WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA and 
  Eastern Plymouth MA Counties.

* WHEN...Through the 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.

&&

$$
382 
WHUS41 KBOX 172340
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
740 PM EDT Sun Sep 17 2023

MAZ007-015-016-019-022-024-180045-
/O.CAN.KBOX.RP.S.0007.000000T0000Z-230918T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Nantucket MA-
740 PM EDT Sun Sep 17 2023

...HIGH RIP CURRENT RISK IS CANCELLED...

The long period easterly swell was subsiding. Therefore...the high rip 
current risk statement has been cancelled.

$$

Nearby

Rip Current Statements in Massachusetts, 2023Every rip current statement in 2023

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.