Alert archive / Massachusetts / Rip Current Statements in 2021

Rip Current Statement 1, NWS Boston/Norton, MA

June 22, 2021Dukes County, Nantucket County, Massachusetts; Washington County, Rhode Island

NWS Boston/Norton, MA issued this rip current statement at Jun 22, 2021, 3:38 AM EDT for Dukes County, Nantucket County, Massachusetts; Washington County, Rhode Island. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Jun 22, 2021, 3:38 AM EDT (07:38 UTC)
Expired
Jun 22, 2021, 7:00 PM EDT
In force
15 hr
Issued by
NWS Boston/Norton, MA

Counties Dukes County, MA, Nantucket County, MA, Washington County, RI

The radar

The Boston radar (KBOX), 73 km from the middle of the area, began a volume at 07:39 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, 7.6 hours before the alert went out and 183 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 2021-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 127 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 2021-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939Sfc1 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
127 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

774 
WHUS41 KBOX 220738
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
338 AM EDT Tue Jun 22 2021

MAZ023-024-RIZ008-222045-
/O.NEW.KBOX.RP.S.0001.210622T0738Z-210622T2300Z/
Dukes MA-Nantucket MA-Block Island RI-
338 AM EDT Tue Jun 22 2021

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

* WHAT...Dangerous rip currents.

* WHERE...In Massachusetts, Dukes MA and Nantucket MA Counties. 
  In Rhode Island, Block Island RI County.

* 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.

&&

$$

Frank
2 follow-up statements
904 
WHUS41 KBOX 221931
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
331 PM EDT Tue Jun 22 2021

MAZ023-024-RIZ008-222300-
/O.CON.KBOX.RP.S.0001.000000T0000Z-210622T2300Z/
Dukes MA-Nantucket MA-Block Island RI-
331 PM EDT Tue Jun 22 2021

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WHAT...Dangerous rip currents.

* WHERE...In Massachusetts, Nantucket MA and Dukes MA Counties. 
  In Rhode Island, Block Island RI County.

* WHEN...Until 7 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.

&&

$$

BL
267 
WHUS41 KBOX 222302
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
702 PM EDT Tue Jun 22 2021

MAZ023-024-RIZ008-230015-
/O.EXP.KBOX.RP.S.0001.000000T0000Z-210622T2300Z/
Dukes MA-Nantucket MA-Block Island RI-
702 PM EDT Tue Jun 22 2021

...HIGH RIP CURRENT RISK HAS EXPIRED...

Lingering swell from the distant remnants of Claudette will 
continue to diminish overnight, lowering the risk for rip 
currents into Wednesday.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 10:50 PM EDTSpecial Weather StatementBOXFranklin40 min
Jun 22, 1:52 PM EDTSevere Thunderstorm WarningBOXBristol38 min
Jun 22, 2:00 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Plymouth, Suffolk45 min
Jun 22, 2:14 PM EDTSpecial Marine WarningBOX31 min
Jun 22, 2:33 PM EDTSpecial Weather StatementBOXPlymouth42 min
Jun 22, 2:43 PM EDTSpecial Weather StatementBOXPlymouth32 min
Jun 22, 3:06 PM EDTSevere Thunderstorm WarningBOXBristol, Plymouth23 min
Jun 22, 3:07 PM EDTSpecial Marine WarningBOX53 min
Jun 22, 3:41 PM EDTSpecial Marine WarningBOX64 min
Jun 22, 4:42 PM EDTSpecial Weather StatementBOXNorfolk, Suffolk48 min
Jun 22, 1:39 PM EDTSpecial Weather StatementBOXBristol51 min
Jun 22, 1:41 PM EDTSpecial Weather StatementBOXBristol, Kent, Providence49 min

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.