Storm Station
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At a river or reservoir gauge

DCP network, identified by the register

Identifier
410051073373001
Latitude
41.01412 N
Longitude
73.62508 W
Elevation
-
Rank
6of 375 in Connecticut, Oct 16
Observed
9:45 PMEDT, 1 hour ago
Precipitation in the gauge's latest reading
0in

Ranking Statistics

On the radar over Greenwich Harbor Precipitation At Grass IslandReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a river or reservoir gauge

Drawn as the kind of place it stands at. 14 instruments in Connecticut stand at one.

Station charts

Greenwich Harbor Precipitation At Grass Island Report

Rank 6 of 375 in Connecticut, 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 score99.4of 100

Connecticut median
90.9the median score of 375 stations
Scoring higher
4stations in Connecticut
Sharing its score
66ranks 5 to 70
Points deducted
0.60.6 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Connecticut median 100.0, 100.0, 94.0
Next above
HFDrank 5; ahead on median arrival 5 min 49 s against 7 min 48 s
Next below
MWNC3rank 7; behind on median arrival 7 min 48 s against 9 min 59 s

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 pointsConnecticut median 85.7168 of 168 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsConnecticut median 100.0half its reports arrived within 8 min
  3. Continuityweight 10100.010.0 of 10 pointsConnecticut 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 medianConnecticut median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianConnecticut median 100.0-
  6. Forecast checkweight 10-9.4 of 10 points, at the medianConnecticut median 94.0-

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
6of 375 in Connecticut, Oct 16
Schedule
every houron the hour's :45
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
61 minfrom Oct 16, 1:45 AM
Latest report
Oct 16, 1:45 AMlocal time
Time to reach Storm Station
8 min9 in 10 within 8 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 375 ranked stations in Connecticut 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, 0; 10 to 19 per cent, 3; 20 to 29 per cent, 35; 30 to 39 per cent, 0; 40 to 49 per cent, 28; 50 to 59 per cent, 69; 60 to 69 per cent, 11; 70 to 79 per cent, 23; 80 to 89 per cent, 35; 90 to 99 per cent, 76; 100 per cent, 95. Greenwich Harbor Precipitation At Grass Island received 100.0 per cent, 168 of 168 scheduled reports, rank 6 of 375.WHERE IT RANKS IN CONNECTICUT, Oct 16THIS ONE: 100.0%, 168 OF 168, RANK 6 OF 375PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1100 to 910 to 19320 to 293530 to 3940 to 492850 to 596960 to 691170 to 792380 to 893590 to 997610095STATIONS, LOG SCALE
Chart of Greenwich Harbor Precipitation At Grass Island's rank in Connecticut by how it reported, day by day, from 2026-10-07 to 2026-10-16: 2026-10-07 rank 349 of 369; 2026-10-08 rank 337 of 369; 2026-10-09 rank 220 of 365; 2026-10-10 rank 219 of 366; 2026-10-11 rank 195 of 362; 2026-10-12 rank 141 of 364; 2026-10-13 rank 5 of 366; 2026-10-14 rank 5 of 369; 2026-10-15 rank 6 of 372; 2026-10-16 rank 6 of 375.ITS RANK IN CONNECTICUT, DAY BY DAYRANK, FIRST AT THE TOP1100200300400Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%95
90 to 99%76
80 to 89%35
70 to 79%23
60 to 69%11
50 to 59%69
40 to 49%28
30 to 39%0
20 to 29%35
10 to 19%3
0 to 9%0
DayRankStations rankedShare received
Oct 16, 20266375100.0%
Oct 15, 20266372100.0%
Oct 14, 20265369100.0%
Oct 13, 20265366100.0%
Oct 12, 202614136485.7%
Oct 11, 202619536271.4%
Oct 10, 202621936657.1%
Oct 9, 202622036557.1%
Oct 8, 202633736928.5%
Oct 7, 202634936914.2%

Station report

Greenwich Harbor Precipitation At Grass 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 40 degrees above the horizon at 41.01 N, and the day is 10 h 56 min long. Level ground there takes 64 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Greenwich Harbor Precipitation At Grass Island, angles true: on Oct 16 it stands 40 degrees above the horizon, against 72 at the June solstice, 49 at the equinoxes and 26 at the December solstice; the day is 10 h 56 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 410051073373001FIG. E THE SUN AT GREENWICH HARBOR PRECIPITATION AT GRASS 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 72°EQUINOXES 49°DECEMBER SOLSTICE 26°OCT 16, 40°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 56 MINLEVEL GROUND TAKES 64 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 41.01 N; THE SUN'S DECLINATION -9.1°TITLEGreenwich Harbor Precipitation At Grass Island, the sunSTATION REPORT · DCP 410051073373001TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-16IDSR-410051073373001-1DRAWN 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, Greenwich Harbor Precipitation At Grass Island, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 410051073373001FIG. 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 SCALETITLEGreenwich Harbor Precipitation At Grass Island, the instrumentSTATION REPORT · DCP 410051073373001TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-16IDSR-410051073373001-2DRAWN 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

Near Greenwich Harbor Precipitation At Grass Island

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