Storm Station
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At a river or reservoir gauge

DCP network, identified by the register

Identifier
423701071344800
Latitude
42.61694 N
Longitude
71.58000 W
Elevation
-
Rank
198of 744 in Massachusetts, Oct 16
Observed
9:30 AMEDT, 1 hour ago
Precipitation in the gauge's latest reading
0.06in

Ranking Statistics

On the radar over Town Of Groton Precipitation Station GrotonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a river or reservoir gauge

Drawn as the kind of place it stands at. 31 instruments in Massachusetts stand at one.

Station charts

Town Of Groton Precipitation Station Groton Report

Rank 198 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 score96.0of 100

Massachusetts median
92.1the median score of 744 stations
Scoring higher
196stations in Massachusetts
Sharing its score
14ranks 197 to 210
Points deducted
4.02.6 arrival, 1.4 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Massachusetts median 100.0, 100.0, 85.6
Next above
FBGM3rank 197; ahead on median arrival 22 min 36 s against 22 min 48 s
Next below
01095220rank 203; behind on longest silence 60 min against 75 min
Sharing its rank
4other stations, equal on every measure

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 35100.035.0 of 35 pointsMassachusetts median 85.7168 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1074.47.4 of 10 pointsMassachusetts median 100.0half its reports arrived within 23 min
  3. Continuityweight 10100.010.0 of 10 pointsMassachusetts median 100.0longest silence 60 min, on a schedule of one report every 60 min
  4. Accuracyweight 20-20.0 of 20 points, at the medianMassachusetts median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianMassachusetts median 100.0-
  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 (3 h), none for 72 (72 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °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
Rank
198of 744 in Massachusetts, Oct 16
Schedule
every houron the hour's :30
Reports received, 24 hours
24 of 24100% of its schedule
Reports received, 7 days
168 of 168100% of its schedule
Days reported, 30 days
-
Longest silence, 7 days
62 minfrom Oct 16, 1:30 PM
Latest report
Oct 16, 1:30 PMlocal time
Time to reach Storm Station
23 min9 in 10 within 23 min

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

Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour 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. Town Of Groton Precipitation Station Groton received 100.0 per cent, 168 of 168 scheduled reports, rank 198 of 744.WHERE IT RANKS IN MASSACHUSETTS, Oct 16THIS ONE: 100.0%, 168 OF 168, RANK 198 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 Town Of Groton Precipitation Station Groton's rank in Massachusetts by how it reported, day by day, from 2026-10-07 to 2026-10-16: 2026-10-07 rank 693 of 722; 2026-10-08 rank 682 of 733; 2026-10-09 rank 496 of 725; 2026-10-10 rank 493 of 726; 2026-10-11 rank 427 of 729; 2026-10-12 rank 359 of 726; 2026-10-13 rank 198 of 730; 2026-10-14 rank 195 of 735; 2026-10-15 rank 209 of 741; 2026-10-16 rank 198 of 744.ITS RANK IN MASSACHUSETTS, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Oct 7Oct 9Oct 11Oct 13Oct 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, 2026198744100.0%
Oct 15, 2026209741100.0%
Oct 14, 2026195735100.0%
Oct 13, 2026198730100.0%
Oct 12, 202635972686.3%
Oct 11, 202642772972.0%
Oct 10, 202649372657.7%
Oct 9, 202649672557.1%
Oct 8, 202668273329.1%
Oct 7, 202669372214.8%

Station report

Town Of Groton Precipitation Station Groton, 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 38 degrees above the horizon at 42.62 N, and the day is 10 h 52 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 Town Of Groton Precipitation Station Groton, angles true: on Oct 16 it stands 38 degrees above the horizon, against 71 at the June solstice, 47 at the equinoxes and 24 at the December solstice; the day is 10 h 52 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 423701071344800FIG. E THE SUN AT TOWN OF GROTON PRECIPITATION STATION GROTONELEVATION 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 47°DECEMBER SOLSTICE 24°OCT 16, 38°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 52 MINLEVEL GROUND TAKES 62 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 42.62 N; THE SUN'S DECLINATION -9.1°TITLETown Of Groton Precipitation Station Groton, the sunSTATION REPORT · DCP 423701071344800TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-16IDSR-423701071344800-1DRAWN 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, Town Of Groton Precipitation Station Groton, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 423701071344800FIG. 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 SCALETITLETown Of Groton Precipitation Station Groton, the instrumentSTATION REPORT · DCP 423701071344800TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-16IDSR-423701071344800-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001

What it seesMoon and tides FB-CLK-003Hurricane FB-EVT-043Nor'easter FB-EVT-066Flash flood FB-EVT-100Coastal flood FB-EVT-105

What this instrument measures for

2 places read it as one of the nearest to it.

Near Town Of Groton Precipitation Station Groton

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