Alert archive / Massachusetts / Rip Current Statements in 2020

Rip Current Statement 3, NWS Boston/Norton, MA

September 13, 2020Essex County, Massachusetts

NWS Boston/Norton, MA issued this rip current statement at Sep 13, 2020, 11:08 AM EDT for Essex County, Massachusetts. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Sep 13, 2020, 11:08 AM EDT (15:08 UTC)
Expired
Sep 13, 2020, 6:00 PM EDT
In force
7 hr
Issued by
NWS Boston/Norton, MA

County Essex County, MA

The radar

The Boston radar (KBOX), 79 km from the middle of the area, began a volume at 15:13 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

Chatham, MA (KCHH), launched 12:00Z, 3.1 hours before the alert went out and 131 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, Chatham, MA at 12:00Z on 2020-09-13Temperature 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, Chatham, MA at 12:00Z on 2020-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
989 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

377 
WHUS41 KBOX 131508
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
1108 AM EDT Sun Sep 13 2020

MAZ007-132200-
/O.NEW.KBOX.RP.S.0003.200913T1508Z-200913T2200Z/
Eastern Essex MA-
1108 AM EDT Sun Sep 13 2020

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 6 PM EDT THIS EVENING...

* WHAT...Dangerous rip currents.

* WHERE...Eastern Essex MA County.

* 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.

&&

$$
1 follow-up statement
672 
WHUS41 KBOX 131955
CFWBOX

Coastal Hazard Message
National Weather Service Boston/Norton MA
355 PM EDT Sun Sep 13 2020

MAZ007-140500-
/O.NEW.KBOX.SU.Y.0009.200914T1000Z-200916T0000Z/
/O.CON.KBOX.RP.S.0003.000000T0000Z-200913T2200Z/
Eastern Essex MA-
355 PM EDT Sun Sep 13 2020

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...
...HIGH SURF ADVISORY IN EFFECT FROM 6 AM MONDAY TO 8 PM EDT
TUESDAY...

* WHAT...For the High Surf Advisory, large breaking waves of 4 
  to 8 feet expected in the surf zone. For the High Rip Current 
  Risk, dangerous rip currents.

* WHERE...Eastern Essex MA County.

* WHEN...For the High Surf Advisory, from 6 AM Monday to 8 PM 
  EDT Tuesday. For the High Rip Current Risk, until 6 PM EDT 
  this evening.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Viewing large waves or fishing from jetties 
  is strongly discouraged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions. Viewing large waves or fishing 
from jetties is strongly discouraged.

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.

&&

$$

MAZ020-022>024-RIZ006>008-140500-
/O.NEW.KBOX.SU.Y.0009.200914T1000Z-200916T0000Z/
Southern Bristol MA-Barnstable MA-Dukes MA-Nantucket MA-
Washington RI-Newport RI-Block Island RI-
355 PM EDT Sun Sep 13 2020

...HIGH SURF ADVISORY IN EFFECT FROM 6 AM MONDAY TO 8 PM EDT
TUESDAY...

* WHAT...Large breaking waves of 5 to 10 feet expected in the 
  surf zone.

* WHERE...In Massachusetts, Southern Bristol MA, Barnstable MA, 
  Dukes MA and Nantucket MA Counties. In Rhode Island, 
  Washington RI, Newport RI and Block Island RI Counties.

* WHEN...From 6 AM Monday to 8 PM EDT Tuesday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion.

* ADDITIONAL DETAILS...Viewing large waves or fishing from jetties 
  is strongly discouraged.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions. Viewing large waves or fishing from jetties 
is strongly discouraged.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 3:26 PM EDTSmall Craft AdvisoryBOX53 hr
Sep 13, 3:55 PM EDTHigh Surf AdvisoryBOXBarnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 1 more52 hr

Nearby

Rip Current Statements in Massachusetts, 2020Every rip current statement in 2020

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.