Storm Station
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At a tide gauge

DCP network, identified by the register

Identifier
NDBC-CASM1
Latitude
43.65600 N
Longitude
70.24600 W
Elevation
-
Rank
400of 422 in Maine, Oct 16
Observed
9:30 AMEDT, 1 hour ago
Air temperature
52.5F
Wind
15mph
Gust
21mph
Wind direction
160°

Ranking Statistics

On the radar over PortlandReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a tide gauge

Drawn as the kind of place it stands at. 5 instruments in Maine stand at one.

Station charts

Portland Report

Rank 400 of 422 in Maine, 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 score68.9of 100

Maine median
94.7the median score of 422 stations
Scoring higher
399stations in Maine
Sharing its score
1no other station
Points deducted
31.114.8 reports received, 6.8 arrival, 6.1 continuity, 2.5 accuracy, 0.9 forecast check
Counted at the median
Forecast checknot measured at this station; Maine median 91.1
Next above
BAHM1rank 399; ahead on 247 score 70.0 against 68.9
Next below
NDBC-ATGM1rank 401; behind on 247 score 68.9 against 68.7

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 3557.720.2 of 35 pointsMaine median 97.6323 of 560 scheduled reports received in 7 days
  2. Arrivalweight 1031.93.2 of 10 pointsMaine median 98.8half its reports arrived within 44 min
  3. Continuityweight 1038.83.9 of 10 pointsMaine median 100.0longest silence 6.3 h, on a schedule of one report every 18 min
  4. Accuracyweight 2087.717.5 of 20 pointsMaine median 99.4its temperature against the airport station KPWM, 3.1 miles away, over 237 readings: typical difference 2.6 °F beyond a steady offset of +1.8 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsMaine median 100.00 of 237 readings failed their check against its reference station
  6. Forecast checkweight 10-9.1 of 10 points, at the medianMaine median 91.1-

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 1.8 °F of its reference, typically, none beyond 8.3 °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
400of 422 in Maine, Oct 16
Schedule
every 18 minon the hour's :00, :18, :30 and :48
Reports received, 24 hours
58 of 8072.5% of its schedule, 65 reports in all
Reports received, 7 days
356 of 56063.5% of its schedule, 424 reports in all
Days reported, 30 days
-
Longest silence, 7 days
6 h 18 minfrom Oct 14, 9:00 AM
Latest report
Oct 16, 1:30 PMlocal time
Time to reach Storm Station
43 min9 in 10 within 53 min
Against its reference, 30 days
+2.4 °Fwarmer than the airport station KPWM, 3.1 miles away, on average over 264 readings; typical difference 4.0 °F

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 422 ranked stations in Maine 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, 6; 10 to 19 per cent, 1; 20 to 29 per cent, 10; 30 to 39 per cent, 0; 40 to 49 per cent, 32; 50 to 59 per cent, 77; 60 to 69 per cent, 13; 70 to 79 per cent, 28; 80 to 89 per cent, 33; 90 to 99 per cent, 104; 100 per cent, 118. Portland received 57.6 per cent, 323 of 560 scheduled reports, rank 400 of 422.WHERE IT RANKS IN MAINE, Oct 16THIS ONE: 57.6%, 323 OF 560, RANK 400 OF 422PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9610 to 19120 to 291030 to 3940 to 493250 to 597760 to 691370 to 792880 to 893390 to 99104100118STATIONS, LOG SCALE
Chart of Portland's rank in Maine by how it reported, day by day, from 2026-10-11 to 2026-10-16: 2026-10-11 rank 405 of 412; 2026-10-12 rank 405 of 416; 2026-10-13 rank 404 of 423; 2026-10-14 rank 394 of 419; 2026-10-15 rank 404 of 424; 2026-10-16 rank 400 of 422.ITS RANK IN MAINE, DAY BY DAYRANK, FIRST AT THE TOP1200400600Oct 11Oct 12Oct 13Oct 14Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%118
90 to 99%104
80 to 89%33
70 to 79%28
60 to 69%13
50 to 59%77
40 to 49%32
30 to 39%0
20 to 29%10
10 to 19%1
0 to 9%6
DayRankStations rankedShare received
Oct 16, 202640042257.6%
Oct 15, 202640442447.6%
Oct 14, 202639441942.1%
Oct 13, 202640442332.6%
Oct 12, 202640541622.3%
Oct 11, 202640541211.6%

Station report

Portland, 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 37 degrees above the horizon at 43.66 N, and the day is 10 h 50 min long. Level ground there takes 61 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Portland, angles true: on Oct 16 it stands 37 degrees above the horizon, against 70 at the June solstice, 46 at the equinoxes and 23 at the December solstice; the day is 10 h 50 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-CASM1FIG. E THE SUN AT PORTLANDELEVATION 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 70°EQUINOXES 46°DECEMBER SOLSTICE 23°OCT 16, 37°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 50 MINLEVEL GROUND TAKES 61 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 43.66 N; THE SUN'S DECLINATION -9.1°TITLEPortland, the sunSTATION REPORT · DCP NDBC-CASM1TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-16IDSR-NDBCCASM1-1DRAWN 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, Portland, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-CASM1FIG. 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 SCALETITLEPortland, the instrumentSTATION REPORT · DCP NDBC-CASM1TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-16IDSR-NDBCCASM1-2DRAWN 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

1 place reads it as one of the nearest to it.

Near Portland

Gauges

Weather instruments

Places