Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
EW3531
Latitude
34.27000 N
Longitude
119.24000 W
Elevation
150 ft
Rank
3,537of 4,465 in California, Oct 16

Ranking Statistics

On the radar over Citizen station EW3531ReflectivityStorm 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. 1,795 instruments in California stand at one.

Station charts

Citizen station EW3531 Report

Rank 3,537 of 4,465 in California, 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 score80.7of 100

California median
91.6the median score of 4,465 stations
Scoring higher
3,515stations in California
Sharing its score
23ranks 3,516 to 3,538
Points deducted
19.315.6 reports received, 3.0 continuity, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
EW4496rank 3,536; ahead on reports received 58.9% against 55.3%
Next below
CW0136rank 3,538; behind on reports received 55.3% against 55.2%

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 3555.419.4 of 35 pointsCalifornia median 98.5124 of 224 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsCalifornia median 81.2half its reports arrived within 19 s
  3. Continuityweight 1070.57.1 of 10 pointsCalifornia median 100.0longest silence 5.8 h, on a schedule of one report every 45 min
  4. Accuracyweight 20100.020.0 of 20 pointsCalifornia median 85.6its temperature against the airport station KOXR, 5.2 miles away, over 90 readings: typical difference 1.8 °F beyond a steady offset of -1.2 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 90 readings failed their check against its reference station
  6. Forecast checkweight 10-9.2 of 10 points, at the medianCalifornia median 92.4-

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 2.0 °F of its reference, typically, none beyond 8.5 °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
3,537of 4,465 in California, Oct 16
Time to reach Storm Station
21 s9 in 10 within 31 s
Against its reference, 30 days
-0.8 °Fcooler than the airport station KOXR, 5.2 miles away, on average over 124 readings; typical difference 2.4 °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: 124 of 224 scheduled reports received, 55.3%.

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 4,465 ranked stations in California 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, 78; 10 to 19 per cent, 83; 20 to 29 per cent, 45; 30 to 39 per cent, 22; 40 to 49 per cent, 118; 50 to 59 per cent, 285; 60 to 69 per cent, 120; 70 to 79 per cent, 209; 80 to 89 per cent, 391; 90 to 99 per cent, 2,034; 100 per cent, 1,080. Citizen station EW3531 received 55.3 per cent, 124 of 224 scheduled reports, rank 3,537 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 55.3%, 124 OF 224, RANK 3,537 OF 4,465PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101001,0000 to 97810 to 198320 to 294530 to 392240 to 4911850 to 5928560 to 6912070 to 7920980 to 8939190 to 992,0341001,080STATIONS, LOG SCALE
Chart of Citizen station EW3531's rank in California by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 2,815 of 4,333; 2026-10-06 rank 2,866 of 4,362; 2026-10-07 rank 3,815 of 4,381; 2026-10-08 rank 3,901 of 4,405; 2026-10-09 rank 3,733 of 4,400; 2026-10-10 rank 3,740 of 4,400; 2026-10-11 rank 3,585 of 4,428; 2026-10-12 rank 3,849 of 4,446; 2026-10-13 rank 3,862 of 4,464; 2026-10-14 rank 3,806 of 4,466; 2026-10-15 rank 3,767 of 4,462; 2026-10-16 rank 3,537 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP11,0002,0003,0004,000Oct 5Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%1,080
90 to 99%2,034
80 to 89%391
70 to 79%209
60 to 69%120
50 to 59%285
40 to 49%118
30 to 39%22
20 to 29%45
10 to 19%83
0 to 9%78
DayRankStations rankedShare received
Oct 16, 20263,5374,46555.3%
Oct 15, 20263,7674,46251.7%
Oct 14, 20263,8064,46651.3%
Oct 13, 20263,8624,46448.2%
Oct 12, 20263,8494,44646.5%
Oct 11, 20263,5854,42858.6%
Oct 10, 20263,7404,40053.2%
Oct 9, 20263,7334,40053.2%
Oct 8, 20263,9014,40551.6%
Oct 7, 20263,8154,38155.2%
Oct 6, 20262,8664,36274.2%
Oct 5, 20262,8154,33373.6%

Station report

Citizen station EW3531, 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 150 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.76 inHg and the temperature at 58.5 F.

Section from sea level of where Citizen station EW3531 stands in the atmosphere, height to scale: the station 150 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.76 inches of mercury, and temperature, 58.5 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3531FIG. D WHERE CITIZEN STATION EW3531 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 EW35311 PER CENT OF THE AIR BELOW IT150 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 HERE29.76 inHgSTANDARD TEMPERATURE HERE58.5 FTITLECitizen station EW3531, the columnSTATION REPORT · CWOP EW3531TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-EW3531-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 47 degrees above the horizon at 34.27 N, and the day is 11 h 10 min long. Level ground there takes 73 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station EW3531, angles true: on Oct 16 it stands 47 degrees above the horizon, against 79 at the June solstice, 56 at the equinoxes and 32 at the December solstice; the day is 11 h 10 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3531FIG. E THE SUN AT CITIZEN STATION EW3531ELEVATION 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 79°EQUINOXES 56°DECEMBER SOLSTICE 32°OCT 16, 47°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 10 MINLEVEL GROUND TAKES 73 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 34.27 N; THE SUN'S DECLINATION -9.1°TITLECitizen station EW3531, the sunSTATION REPORT · CWOP EW3531TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-EW3531-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 150 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station EW3531, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3531FIG. 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 EW3531, the instrumentSTATION REPORT · CWOP EW3531TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-EW3531-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station EW3531

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