Storm Station
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At a tide gauge

DCP network, identified by the register

Identifier
NDBC-CSIM3
Latitude
42.34100 N
Longitude
71.01200 W
Elevation
-
Observed
12:18 AMEDT, 1 hour ago
Wind
7mph
Gust
9mph
Wind direction
190°

Ranking Statistics

At a tide gauge

Drawn as the kind of place it stands at. 8 instruments in Massachusetts stand at one.

Station charts

Castle Island Report

Rank 708 of 744 in Massachusetts, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

Ranking Statistics

247 score70.6of 100

Massachusetts median
92.1the median score of 744 stations
Scoring higher
707stations in Massachusetts
Sharing its score
1no other station
Points deducted
29.414.9 reports received, 6.8 arrival, 6.1 continuity, 1.4 forecast check, 0.2 accuracy
Counted at the median
Forecast checknot measured at this station; Massachusetts median 85.6
Next above
NDBC-FRXM3rank 707; ahead on 247 score 71.2 against 70.6
Next below
NDBC-FRVM3rank 709; behind on 247 score 70.6 against 69.3

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 3557.520.1 of 35 pointsMassachusetts median 85.7322 of 560 scheduled reports received in 7 days
  2. Arrivalweight 1031.93.2 of 10 pointsMassachusetts median 100.0half its reports arrived within 44 min
  3. Continuityweight 1038.83.9 of 10 pointsMassachusetts median 100.0longest silence 6.3 h, on a schedule of one report every 18 min
  4. Accuracyweight 2099.119.8 of 20 pointsMassachusetts median 100.0its temperature against the airport station KBOS, 1.4 miles away, over 254 readings: typical difference 1.7 °F beyond a steady offset of -0.2 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsMassachusetts median 100.00 of 254 readings failed their check against its reference station
  6. Forecast checkweight 10-8.6 of 10 points, at the medianMassachusetts median 85.6-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (54 min), none for 72 (21.6 h)
Accuracy
Full marks within 1.6 °F of its reference, typically, none beyond 8.1 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
Schedule
every 18 minon the hour's :00, :18, :30 and :48
Reports received, 24 hours
56 of 8070.0% of its schedule, 62 reports in all
Reports received, 7 days
336 of 56060.0% of its schedule, 398 reports in all
Days reported, 30 days
-
Longest silence, 7 days
6 h 18 minfrom Oct 14, 9:00 AM
Latest report
Oct 16, 4:18 AMlocal time
Time to reach Storm Station
44 min9 in 10 within 53 min
Against its reference, 30 days
-0.2 °Fcooler than the airport station KBOS, 1.4 miles away, on average over 255 readings; typical difference 1.6 °F; also compared with 1 other reference station

From Storm Station's own record of every report it heard from this station.

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

Its schedule is one report every 18 min, 80 in 24 hours. Two reports in the same 18 min count as one received.

Chart of the 744 ranked stations in Massachusetts on Oct 16 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 3; 10 to 19 per cent, 5; 20 to 29 per cent, 13; 30 to 39 per cent, 4; 40 to 49 per cent, 60; 50 to 59 per cent, 170; 60 to 69 per cent, 22; 70 to 79 per cent, 51; 80 to 89 per cent, 93; 90 to 99 per cent, 112; 100 per cent, 211. Castle Island received 57.5 per cent, 322 of 560 scheduled reports, rank 708 of 744.WHERE IT RANKS IN MASSACHUSETTS, Oct 16THIS ONE: 57.5%, 322 OF 560, RANK 708 OF 744PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9310 to 19520 to 291330 to 39440 to 496050 to 5917060 to 692270 to 795180 to 899390 to 99112100211STATIONS, LOG SCALE
Chart of Castle Island's rank in Massachusetts by how it reported, day by day, from 2026-10-11 to 2026-10-16: 2026-10-11 rank 711 of 729; 2026-10-12 rank 695 of 726; 2026-10-13 rank 696 of 730; 2026-10-14 rank 697 of 735; 2026-10-15 rank 707 of 741; 2026-10-16 rank 708 of 744.ITS RANK IN MASSACHUSETTS, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Oct 11Oct 12Oct 13Oct 14Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%211
90 to 99%112
80 to 89%93
70 to 79%51
60 to 69%22
50 to 59%170
40 to 49%60
30 to 39%4
20 to 29%13
10 to 19%5
0 to 9%3
DayRankStations rankedShare received
Oct 16, 202670874457.5%
Oct 15, 202670774147.6%
Oct 14, 202669773542.1%
Oct 13, 202669673032.6%
Oct 12, 202669572622.3%
Oct 11, 202671172911.6%

Station report

Castle Island, in 2 sheets

Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The sun

Contents

On Oct 16 the noon sun stands 39 degrees above the horizon at 42.34 N, and the day is 10 h 53 min long. Level ground there takes 62 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Castle Island, angles true: on Oct 16 it stands 39 degrees above the horizon, against 71 at the June solstice, 48 at the equinoxes and 24 at the December solstice; the day is 10 h 53 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-CSIM3FIG. E THE SUN AT CASTLE ISLANDELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 71°EQUINOXES 48°DECEMBER SOLSTICE 24°OCT 16, 39°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 53 MINLEVEL GROUND TAKES 62 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 42.34 N; THE SUN'S DECLINATION -9.1°TITLECastle Island, the sunSTATION REPORT · DCP NDBC-CSIM3TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-16IDSR-NDBCCSIM3-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A data collection platform. Its sensors, as its network builds them.

Elevation of a data collection platform, Castle Island, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-CSIM3FIG. F THE INSTRUMENTELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECastle Island, the instrumentSTATION REPORT · DCP NDBC-CSIM3TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-16IDSR-NDBCCSIM3-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Castle Island