Storm Station

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
DW4640
Latitude
43.16000 N
Longitude
70.91000 W
Elevation
114 ft
Rank
342of 403 in New Hampshire, Oct 11

Ranking Statistics

On the radar over Citizen station DW4640ReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

In a volunteer observer's own ground

Drawn as the kind of place it stands at. 441 instruments in New Hampshire stand at one.

Station charts

Citizen station DW4640 Report

Rank 342 of 403 in New Hampshire, Oct 11. 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

New Hampshire median
89.3the median score of 403 stations
Scoring higher
341stations in New Hampshire
Sharing its score
1no other station
Points deducted
29.424.9 reports received, 3.1 continuity, 1.4 forecast check
Counted at the median
Forecast checknot measured at this station; New Hampshire median 85.8
Next above
009NHrank 341; ahead on 247 score 70.9 against 70.6
Next below
FW4292rank 343; behind on 247 score 70.6 against 70.3

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 3528.910.1 of 35 pointsNew Hampshire median 85.763 of 218 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsNew Hampshire median 99.9half its reports arrived within 15 s
  3. Continuityweight 1069.26.9 of 10 pointsNew Hampshire median 100.0longest silence 6 h, on a schedule of one report every 45 min
  4. Accuracyweight 20100.020.0 of 20 pointsNew Hampshire median 90.7its temperature against the airport station KPSM, 8.0 miles away, over 32 readings: typical difference 1.5 °F beyond a steady offset of -3.5 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsNew Hampshire median 100.00 of 32 readings failed their check against its reference station
  6. Forecast checkweight 10-8.6 of 10 points, at the medianNew Hampshire median 85.8-

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 (2.3 h), none for 72 (54 h)
Accuracy
Full marks within 2.3 °F of its reference, typically, none beyond 8.8 °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
342of 403 in New Hampshire, Oct 11
Time to reach Storm Station
16 s9 in 10 within 30 s
Against its reference, 30 days
-4.1 °Fcooler than the airport station KPSM, 8.0 miles away, on average over 22 readings; typical difference 4.2 °F; also compared with 1 other reference station

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 63 of 218 scheduled reports received, 28.8%.

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.

Chart of the 403 ranked stations in New Hampshire on Oct 11 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, 14; 20 to 29 per cent, 20; 30 to 39 per cent, 5; 40 to 49 per cent, 32; 50 to 59 per cent, 59; 60 to 69 per cent, 6; 70 to 79 per cent, 37; 80 to 89 per cent, 35; 90 to 99 per cent, 99; 100 per cent, 90. Citizen station DW4640 received 28.8 per cent, 63 of 218 scheduled reports, rank 342 of 403.WHERE IT RANKS IN NEW HAMPSHIRE, Oct 11THIS ONE: 28.8%, 63 OF 218, RANK 342 OF 403PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1100 to 9610 to 191420 to 292030 to 39540 to 493250 to 595960 to 69670 to 793780 to 893590 to 999910090STATIONS, LOG SCALE
Chart of Citizen station DW4640's rank in New Hampshire by how it reported, day by day, from 2026-10-08 to 2026-10-11: 2026-10-08 rank 348 of 400; 2026-10-09 rank 344 of 406; 2026-10-10 rank 352 of 406; 2026-10-11 rank 342 of 403.ITS RANK IN NEW HAMPSHIRE, DAY BY DAYRANK, FIRST AT THE TOP1100200300400Oct 8Oct 9Oct 10Oct 11
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%90
90 to 99%99
80 to 89%35
70 to 79%37
60 to 69%6
50 to 59%59
40 to 49%32
30 to 39%5
20 to 29%20
10 to 19%14
0 to 9%6
DayRankStations rankedShare received
Oct 11, 202634240328.8%
Oct 10, 202635240625.2%
Oct 9, 202634440628.7%
Oct 8, 202634840017.5%

Station report

Citizen station DW4640, in 3 sheets

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

1The column

Contents

At 114 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.80 inHg and the temperature at 58.6 F.

Section from sea level of where Citizen station DW4640 stands in the atmosphere, height to scale: the station 114 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.80 inches of mercury, and temperature, 58.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW4640FIG. D WHERE CITIZEN STATION DW4640 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECITIZEN STATION DW46400 PER CENT OF THE AIR BELOW IT114 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE29.80 inHgSTANDARD TEMPERATURE HERE58.6 FTITLECitizen station DW4640, the columnSTATION REPORT · CWOP DW4640TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-11IDSR-DW4640-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 11 the noon sun stands 40 degrees above the horizon at 43.16 N, and the day is 11 h 06 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 Citizen station DW4640, angles true: on Oct 11 it stands 40 degrees above the horizon, against 70 at the June solstice, 47 at the equinoxes and 23 at the December solstice; the day is 11 h 06 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW4640FIG. E THE SUN AT CITIZEN STATION DW4640ELEVATION 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 47°DECEMBER SOLSTICE 23°OCT 11, 40°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 06 MINLEVEL GROUND TAKES 64 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 43.16 N; THE SUN'S DECLINATION -7.2°TITLECitizen station DW4640, the sunSTATION REPORT · CWOP DW4640TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-11IDSR-DW4640-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 114 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station DW4640, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW4640FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station DW4640, the instrumentSTATION REPORT · CWOP DW4640TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-11IDSR-DW4640-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station DW4640

Gauges

Weather instruments

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