Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NDBC Title GraphicClick to go to NDBC home page   Select to go to the NWS homepage
Home About Us Contact Us
 
 
    
    Station List

 Data Access
    Mobile Access
    Classic Maps
         Recent
         DART®
    Obs Search
    Ship Obs Report
    BuoyCAMs
    TAO
    DODS
    OceanSITES
    HF Radar
    OSMC
    Dial-A-Buoy
    RSS Feeds Image indicating link to RSS feed access page
    Web Widget
    Email Access
    Web Data Guide
    Maintenance Schedule
    Station Status Report

 Program Info
    TAO
    DART®
    VOS
    IOOS®

 Publications
    NDBC PEA
    NDBC FONSI
    NDBC DQC Handbook

 FAQ
 Visitor Information
 
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.

The NDBC website is now available only via HTTPS. Please update your bookmarks and/or links to use https://www.ndbc.noaa.gov/.

Station 44013 (LLNR 420) - BOSTON 16 NM East of Boston, MA Image indicating link to RSS feed of recent meteorological observations for station 44013

Boston Approach Lighted Buoy BF NOAA 44013

Owned and maintained by National Data Buoy Center
3-meter discus buoy
ARES payload
42.346 N 70.651 W (42°20'44" N 70°39'4" W)

Site elevation: sea level
Air temp height: 4 m above site elevation
Anemometer height: 5 m above site elevation
Barometer elevation: sea level
Sea temp depth: 0.6 m below water line
Water depth: 64 m
Watch circle radius: 122 yards

Caution: Right whales may be active in northeast waters year-round. Mandatory speed restrictions of 10 knots apply to vessels 65 feet or greater in specific areas and times along the US east coast. Voluntary speed restrictions may be in effect in other areas and times. For current information on speed-restricted areas, go to: http://www.nmfs.noaa.gov/pr/shipstrike

For area forecasts and warnings, select: Boston WFO

Latest NWS Marine Forecast

Important Notice to Mariners

Search And Rescue (SAR) Data

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station 44013

Station 44013
Large icon indicates selected station.
yellow diamond Stations with recent data
red diamond Stations with no data in last 8 hours
     (24 hours for tsunami stations)

Conditions at 44013 as of
(12:50 am EDT)
0450 GMT on 07/23/2018:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.
5-day plot - Wind Direction Wind Direction (WDIR): ESE ( 120 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 11.7 kts
5-day plot - Wind Gust Wind Gust (GST): 13.6 kts
5-day plot - Wave Height Wave Height (WVHT): 2.6 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 8 sec
5-day plot - Average Period Average Period (APD): 4.1 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): ENE ( 69 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES): 30.16 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY): +0.01 in ( Rising )
5-day plot - Air Temperature Air Temperature (ATMP): 68.7 °F
5-day plot - Water Temperature Water Temperature (WTMP): 68.0 °F
5-day plot - Dew Point Dew Point (DEWP): 68.7 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 11.7 kts
5-day plot - Wind Speed at 10 Meters Wind Speed at 20 meters (WSPD20M): 13.6 kts
5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Continuous Winds
TIME
(EDT)		 5-day plot - Wind Direction WDIR 5-day plot - Wind Speed WSPD
12:50 amESE ( 123 deg ) 11.1 kts
12:40 amSE ( 125 deg ) 10.9 kts
12:30 amSE ( 125 deg ) 11.3 kts
12:20 amSE ( 124 deg ) 12.6 kts
12:10 amSE ( 126 deg ) 14.0 kts
12:00 amSE ( 129 deg ) 12.8 kts
  
Peak gust during the measurement hour
TIME
(EDT)		 5-day plot - Gust Direction GDR 5-day plot - Gust Speed GST
12:07 amESE ( 120 deg ) 15.5 kts
Previous observations
5-day plot - Wind Direction 5-day plot - Wind Speed 5-day plot - Wind Gust 5-day plot - Wave Height 5-day plot - Dominant Wave Period 5-day plot - Average Period 5-day plot - Mean Wave Direction 5-day plot - Atmospheric Pressure 5-day plot - Pressure Tendency 5-day plot - Air Temperature 5-day plot - Water Temperature 5-day plot - Dew Point 5-day plot - Salinity 5-day plot - Visibility 5-day plot - Tide (above MLLW)
MM DD TIME
(EDT)		 WDIR WSPD
kts		 GST
kts		 WVHT
ft		 DPD
sec		 APD
sec		 MWD PRES
in		 PTDY
in		 ATMP
°F		 WTMP
°F		 DEWP
°F		 SAL
psu		 VIS
nmi		 TIDE
ft
072211:50 pm SE 13.6 15.5 3.0 84.1 E30.16- 68.9 68.0 68.9---
072210:50 pm SE 13.6 17.5 2.6 64.1 E30.15+0.04 69.3 68.0 69.3---
0722 9:50 pmESE 13.6 17.5 2.6 64.2 E30.15+0.04 69.8 68.0 69.8---
0722 7:50 pmESE 13.6 15.5 2.6 64.5 E30.11+0.02 69.4 68.2 69.1---
0722 6:50 pmESE 9.7 11.7 2.6 54.7 E30.11+0.02 69.1 68.0 68.4---
0722 5:50 pm SE 9.7 11.7 3.0 64.9 E30.10+0.00 69.4 67.8 68.7---
0722 4:50 pmESE 9.7 11.7 2.6 64.8 E30.09+0.01 69.3 67.8 69.3---
0722 3:50 pmESE 11.7 11.7 2.6 54.5 E30.09+0.02 69.1 67.6 69.1---
0722 2:50 pm SE 7.8 9.7 2.6 54.3 E30.09+0.04 68.9 67.6 68.5---
0722 1:50 pmESE 9.7 11.7 3.0 44.1 E30.09+0.02 68.0 67.5 68.0---
072212:50 pm SE 13.6 15.5 3.0 44.0ESE30.07+0.01 68.7 67.5 68.5---
072211:50 amESE 17.5 21.4 3.3 44.1ESE30.05+0.00 70.0 67.6 69.6---
072210:50 amESE 13.6 15.5 3.0 54.1 E30.06+0.02 70.0 67.6 69.8---
0722 9:50 am E 13.6 15.5 3.3 54.1 E30.05+0.00 68.9 67.8 68.9---
0722 8:50 am E 15.5 17.5 3.3 54.0 E30.05+0.00 68.4 67.6 68.4---
0722 7:50 am E 15.5 19.4 3.3 54.0 E30.05-0.01 67.6 67.8 67.6---
0722 6:50 am E 17.5 19.4 3.0 54.0 E30.05-0.02 67.5 67.8 67.5---
0722 5:50 am E 15.5 17.5 2.6 44.0 E30.06-0.02 67.3 67.8 67.3---
0722 4:50 am E 13.6 17.5 2.6 63.9 E30.06-0.02 66.6 68.0 66.6---
0722 3:50 am E 13.6 15.5 2.3 73.9 E30.07-0.02 66.4 68.2 64.8---
0722 2:50 am E 13.6 15.5 2.3 73.9ENE30.08-0.02 66.6 68.2 64.6---
0722 1:50 am E 11.7 13.6 2.3 43.8ESE30.08-0.03 66.6 68.0 63.9---
072212:50 am E 11.7 13.6 2.3 33.7ESE30.09-0.03 66.4 68.0 63.5---
Detailed Wave Summary
for 44013 as of (1:00 am EDT)
0500 GMT on 07/23/2018:

These wave data are displayed in rounded times.

     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Significant Wave HeightSignificant Wave Height (WVHT): 2.6 ft
5-day plot - Swell HeightSwell Height (SwH): 1.6 ft
5-day plot - Swell PeriodSwell Period (SwP): 7.7 sec
5-day plot - Swell DirectionSwell Direction (SwD):ENE
5-day plot - Wind Wave HeightWind Wave Height (WWH): 2.0 ft
5-day plot - Wind Wave PeriodWind Wave Period (WWP): 3.7 sec
5-day plot - Wind Wave DirectionWind Wave Direction (WWD): SE
5-day plot - Wave SteepnessWave Steepness (STEEPNESS): AVERAGE
5-day plot - Average Wave PeriodAverage Wave Period (APD): 4.1 sec
Previous observations
5-day plot - Significant Wave Height 5-day plot - Swell Height 5-day plot - Swell Period 5-day plot - Swell Direction 5-day plot - Wind Wave Height 5-day plot - Wind Wave Period 5-day plot - Wind Wave Direction 5-day plot - Wave Steepness 5-day plot - Average Wave Period
MM DD TIME
(EDT)		 WVHT
ft		 SwH
ft		 SwP
sec		 SwD WWH
ft		 WWP
sec		 WWD STEEPNESS APD
sec
072312:00 am 3.0 1.3 7.7 E 2.6 5.9 E AVERAGE 4.1
072211:00 pm 2.6 1.3 7.7ENE 2.6 6.2 E STEEP 4.1
072210:00 pm 2.6 1.3 7.1ENE 2.3 5.9 E N/A 4.2
0722 8:00 pm 2.6 1.3 7.1 E 2.3 5.9 E STEEP 4.5
0722 7:00 pm 2.6 2.0 5.3 E 1.6 4.2 E STEEP 4.7
0722 6:00 pm 3.0 2.6 5.9 E 1.6 4.8 E STEEP 4.9
0722 5:00 pm 2.6 2.0 5.9 E 2.0 5.0 ENE STEEP 4.8
0722 4:00 pm 2.6 1.6 5.9ENE 2.3 4.8 EVERY_STEEP 4.5
0722 3:00 pm 2.6 2.3 4.8 E 1.6 3.7 ESEVERY_STEEP 4.3
0722 2:00 pm 3.0 1.6 6.2ENE 2.6 4.2 EVERY_STEEP 4.1
0722 1:00 pm 3.0 1.0 8.3 E 3.0 3.8 ESEVERY_STEEP 4.0
072212:00 pm 3.3 1.0 7.7ENE 3.0 4.0 ESEVERY_STEEP 4.1
072211:00 am 3.0 1.3 8.3 SE 3.0 5.0 EVERY_STEEP 4.1
072210:00 am 3.3 1.0 7.1ENE 3.0 4.5 EVERY_STEEP 4.1
0722 9:00 am 3.3 1.0 9.1ESE 3.3 4.5 EVERY_STEEP 4.0
0722 8:00 am 3.3 1.0 10.0ESE 3.3 4.5 EVERY_STEEP 4.0
0722 7:00 am 3.0 1.3 9.1 E 2.6 4.8 EVERY_STEEP 4.0
0722 6:00 am 2.6 1.0 9.1 E 2.3 3.8 EVERY_STEEP 4.0
0722 5:00 am 2.6 1.0 9.1ENE 2.3 5.6 E N/A 3.9
0722 4:00 am 2.3 1.3 6.7 E 2.0 4.0 E N/A 3.9
0722 3:00 am 2.3 1.3 7.1ENE 2.0 3.7 ENE N/A 3.9
0722 2:00 am 2.3 1.3 6.7 E 2.0 3.6 ESE N/A 3.8
0722 1:00 am 2.3 1.3 7.1 E 2.0 3.4 ESE N/A 3.7

Plot of wave energy versus frequency (and period)

Description of Measurements

Links which are specific to this station are listed below:

Real Time Data in tabular form for the last forty-five days.

Historical Data & Climatic Summaries for quality controlled data for the current month, previous months, and previous years.

The weekly status report and the weekly maintenance report also provide valuable station information.

Note that the payload types and the station locations occasionally change.
Please refer to the NDBC data inventory for the data history of each station.