Alert archive / Massachusetts / Rip Current Statements in 2021

Rip Current Statement 9, NWS Boston/Norton, MA

October 1, 2021Bristol County, Newport County, Washington County, Rhode Island; 8 counties in Massachusetts

NWS Boston/Norton, MA issued this rip current statement at Oct 1, 2021, 3:14 AM EDT for Bristol County, Newport County, Washington County, Rhode Island; 8 counties in Massachusetts. It took effect at Oct 2, 2021, 8:00 AM EDT. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued
Oct 1, 2021, 3:14 AM EDT (07:14 UTC)
In effect from
Oct 2, 2021, 8:00 AM EDT
Expired
Oct 3, 2021, 3:27 PM EDT
In force
31 hr
Issued by
NWS Boston/Norton, MA

Counties Barnstable County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Bristol County, RI, Newport County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 25 km from the middle of the area, began a volume at 07:16 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, 7.2 hours before the alert went out and 193 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, Brookhaven, NY at 00:00Z on 2021-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 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, Brookhaven, NY at 00:00Z on 2021-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939587897Sfc1 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
16 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

383 
WHUS41 KBOX 010714
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
314 AM EDT Fri Oct 1 2021

MAZ007-015-016-019>024-RIZ005>008-012015-
/O.NEW.KBOX.RP.S.0009.211002T1200Z-211004T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
314 AM EDT Fri Oct 1 2021

...HIGH RIP CURRENT RISK IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY EVENING...

* WHAT...Dangerous rip currents expected.

* WHERE...Portions of eastern, northeastern and southeastern 
  Massachusetts and northern and southern Rhode Island.

* WHEN...From Saturday morning through Sunday 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.

&&

$$
5 follow-up statements
576 
WHUS41 KBOX 011823
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
223 PM EDT Fri Oct 1 2021

MAZ007-015-016-019>024-RIZ005>008-020900-
/O.CON.KBOX.RP.S.0009.211002T1200Z-211004T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
223 PM EDT Fri Oct 1 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY EVENING...

* WHAT...Dangerous rip currents expected, especially on south
  facing ocean beaches.

* WHERE...Massachusetts and Rhode Island coast.

* WHEN...Saturday through Sunday.

* IMPACTS...Rip currents can be life threatening and can sweep 
  even the best swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.
Keep in mind beaches are no longer staffed with lifeguards this
late in the year.

&&

$$
830 
WHUS41 KBOX 021105
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
705 AM EDT Sat Oct 2 2021

MAZ007-015-016-019>024-RIZ005>008-030015-
/O.CON.KBOX.RP.S.0009.211002T1200Z-211004T0000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
705 AM EDT Sat Oct 2 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY
EVENING...

* WHAT...Dangerous rip currents expected, especially on south 
  facing ocean beaches.

* WHERE...Massachusetts and Rhode Island coast.

* WHEN...Saturday through Sunday.

* IMPACTS...Rip currents can be life threatening and 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.

&&

$$
671 
WHUS41 KBOX 021926
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
326 PM EDT Sat Oct 2 2021

MAZ007-015-016-019>024-RIZ005>008-030830-
/O.EXT.KBOX.RP.S.0009.000000T0000Z-211004T1000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
326 PM EDT Sat Oct 2 2021

...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH LATE SUNDAY
NIGHT...

* WHAT...Dangerous rip currents expected.

* WHERE...Massachusetts and Rhode Island coast.

* WHEN...Through late Sunday night.

* IMPACTS...Rip currents can be life threatening and 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.

&&

$$
Field
714 
WHUS41 KBOX 030712
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
312 AM EDT Sun Oct 3 2021

MAZ007-015-016-019>024-RIZ005>008-032030-
/O.CON.KBOX.RP.S.0009.000000T0000Z-211004T1000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
312 AM EDT Sun Oct 3 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Dangerous rip currents.

* WHERE...Portions of eastern, northeastern and southeastern 
  Massachusetts and northern and southern Rhode Island.

* WHEN...Through late tonight.

* 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.

&&

$$
593 
WHUS41 KBOX 031927
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
327 PM EDT Sun Oct 3 2021

MAZ007-015-016-019>024-RIZ005>008-032030-
/O.CAN.KBOX.RP.S.0009.000000T0000Z-211004T1000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Washington RI-
Newport RI-Block Island RI-
327 PM EDT Sun Oct 3 2021

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

Long period swell continues, though wave heights are under 4 
feet on all waters. Therefore the rip current statement is 
cancelled.

$$

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 1, 2:20 PM EDTSmall Craft AdvisoryBOX46 hr

Nearby

Rip Current Statements in Massachusetts, 2021Rip Current Statements in Rhode Island, 2021Every rip current statement 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.