Storm Station
Sign in

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
DW7531
Latitude
33.73000 N
Longitude
117.43000 W
Elevation
1,337 ft
Rank
3,797of 4,465 in California, Oct 16

Ranking Statistics

On the radar over Citizen station DW7531ReflectivityStorm 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 DW7531 Report

Rank 3,797 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 score77.9of 100

California median
91.6the median score of 4,465 stations
Scoring higher
3,791stations in California
Sharing its score
9ranks 3,792 to 3,800
Points deducted
22.116.3 reports received, 3.6 continuity, 1.4 accuracy, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
SBDrank 3,796; ahead on reports received 54.9% against 53.4%
Next below
EW1867rank 3,798; behind on reports received 53.4% against 52.2%

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 3553.418.7 of 35 pointsCalifornia median 98.5117 of 219 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsCalifornia median 81.2half its reports arrived within 18 s
  3. Continuityweight 1063.96.4 of 10 pointsCalifornia median 100.0longest silence 7.3 h, on a schedule of one report every 46 min
  4. Accuracyweight 2093.118.6 of 20 pointsCalifornia median 85.6its temperature against the airport station KRIV, 14.8 miles away, over 80 readings: typical difference 3.4 °F beyond a steady offset of +1.0 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 80 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 (55.2 h)
Accuracy
Full marks within 3.0 °F of its reference, typically, none beyond 9.5 °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
3,797of 4,465 in California, Oct 16
Time to reach Storm Station
18 s9 in 10 within 31 s
Against its reference, 30 days
+1.7 °Fwarmer than the airport station KRIV, 15 miles away, on average over 84 readings; typical difference 3.4 °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: 117 of 219 scheduled reports received, 53.4%.

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 DW7531 received 53.4 per cent, 117 of 219 scheduled reports, rank 3,797 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 53.4%, 117 OF 219, RANK 3,797 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 DW7531's rank in California by how it reported, day by day, from 2026-10-06 to 2026-10-16: 2026-10-06 rank 3,803 of 4,362; 2026-10-07 rank 3,675 of 4,381; 2026-10-08 rank 3,861 of 4,405; 2026-10-09 rank 3,560 of 4,400; 2026-10-10 rank 3,567 of 4,400; 2026-10-11 rank 3,587 of 4,428; 2026-10-12 rank 3,504 of 4,446; 2026-10-13 rank 3,586 of 4,464; 2026-10-14 rank 3,577 of 4,466; 2026-10-15 rank 3,466 of 4,462; 2026-10-16 rank 3,797 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP11,0002,0003,0004,000Oct 6Oct 8Oct 10Oct 12Oct 14Oct 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, 20263,7974,46553.4%
Oct 15, 20263,4664,46261.3%
Oct 14, 20263,5774,46658.9%
Oct 13, 20263,5864,46455.9%
Oct 12, 20263,5044,44657.1%
Oct 11, 20263,5874,42856.7%
Oct 10, 20263,5674,40054.8%
Oct 9, 20263,5604,40055.3%
Oct 8, 20263,8614,40551.7%
Oct 7, 20263,6754,38159.2%
Oct 6, 20263,8034,36254.5%

Station report

Citizen station DW7531, 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 1,337 ft above sea level, 5 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.50 inHg and the temperature at 54.2 F.

Section from sea level of where Citizen station DW7531 stands in the atmosphere, height to scale: the station 1,337 feet above sea level with 5 per cent of the air below it; the standard atmosphere's pressure there, 28.50 inches of mercury, and temperature, 54.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW7531FIG. D WHERE CITIZEN STATION DW7531 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 DW75315 PER CENT OF THE AIR BELOW IT1,337 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 HERE28.50 inHgSTANDARD TEMPERATURE HERE54.2 FTITLECitizen station DW7531, the columnSTATION REPORT · CWOP DW7531TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-DW7531-1DRAWN 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 33.73 N, and the day is 11 h 11 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 DW7531, angles true: on Oct 16 it stands 47 degrees above the horizon, against 80 at the June solstice, 56 at the equinoxes and 33 at the December solstice; the day is 11 h 11 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW7531FIG. E THE SUN AT CITIZEN STATION DW7531ELEVATION 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 80°EQUINOXES 56°DECEMBER SOLSTICE 33°OCT 16, 47°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 11 MINLEVEL GROUND TAKES 73 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 33.73 N; THE SUN'S DECLINATION -9.1°TITLECitizen station DW7531, the sunSTATION REPORT · CWOP DW7531TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-DW7531-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 1,337 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station DW7531, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW7531FIG. 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 DW7531, the instrumentSTATION REPORT · CWOP DW7531TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-DW7531-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station DW7531

Gauges

Weather instruments

Places