Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
GW7121
Latitude
37.74000 N
Longitude
121.00000 W
Elevation
119 ft
Rank
4,272of 4,465 in California, Oct 16

Ranking Statistics

On the radar over Citizen station GW7121ReflectivityStorm 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 GW7121 Report

Rank 4,272 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 score60.5of 100

California median
91.6the median score of 4,465 stations
Scoring higher
4,271stations in California
Sharing its score
2ranks 4,272 to 4,273
Points deducted
39.528.1 reports received, 10.0 continuity, 0.8 forecast check, 0.7 accuracy
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
GW1874rank 4,271; ahead on 247 score 60.6 against 60.5
Next below
GW2994rank 4,273; behind on reports received 19.8% against 19.7%

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 3519.86.9 of 35 pointsCalifornia median 98.5400 of 2,016 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsCalifornia median 81.2half its reports arrived within 17 s
  3. Continuityweight 100.00.0 of 10 pointsCalifornia median 100.0longest silence 9.4 h, on a schedule of one report every 5 min
  4. Accuracyweight 2096.719.3 of 20 pointsCalifornia median 85.6its temperature against the airport station KMOD, 8.3 miles away, over 183 readings: typical difference 2.5 °F beyond a steady offset of -0.1 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 183 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 (15 min), none for 72 (6 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
4,272of 4,465 in California, Oct 16
Time to reach Storm Station
17 s9 in 10 within 30 s
Against its reference, 30 days
-0.6 °Fcooler than the airport station KMOD, 8.3 miles away, on average over 294 readings; typical difference 2.6 °F

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: 400 of 2,016 scheduled reports received, 19.8%.

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 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 GW7121 received 19.8 per cent, 400 of 2,016 scheduled reports, rank 4,272 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 19.8%, 400 OF 2,016, RANK 4,272 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 GW7121's rank in California by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 4,274 of 4,333; 2026-10-06 rank 4,278 of 4,362; 2026-10-07 rank 4,266 of 4,381; 2026-10-08 rank 4,256 of 4,405; 2026-10-09 rank 4,257 of 4,400; 2026-10-10 rank 4,257 of 4,400; 2026-10-11 rank 4,266 of 4,428; 2026-10-12 rank 4,190 of 4,446; 2026-10-13 rank 4,212 of 4,464; 2026-10-14 rank 4,233 of 4,466; 2026-10-15 rank 4,245 of 4,462; 2026-10-16 rank 4,272 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP12,0004,0006,000Oct 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, 20264,2724,46519.8%
Oct 15, 20264,2454,46220.6%
Oct 14, 20264,2334,46620.4%
Oct 13, 20264,2124,46420.0%
Oct 12, 20264,1904,44619.1%
Oct 11, 20264,2664,42818.8%
Oct 10, 20264,2574,40018.6%
Oct 9, 20264,2574,40018.4%
Oct 8, 20264,2564,40518.3%
Oct 7, 20264,2664,38117.5%
Oct 6, 20264,2784,36216.8%
Oct 5, 20264,2744,33315.0%

Station report

Citizen station GW7121, 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 119 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.79 inHg and the temperature at 58.6 F.

Section from sea level of where Citizen station GW7121 stands in the atmosphere, height to scale: the station 119 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.79 inches of mercury, and temperature, 58.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW7121FIG. D WHERE CITIZEN STATION GW7121 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 GW71210 PER CENT OF THE AIR BELOW IT119 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 HERE29.79 inHgSTANDARD TEMPERATURE HERE58.6 FTITLECitizen station GW7121, the columnSTATION REPORT · CWOP GW7121TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-GW7121-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 43 degrees above the horizon at 37.74 N, and the day is 11 h 03 min long. Level ground there takes 68 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station GW7121, angles true: on Oct 16 it stands 43 degrees above the horizon, against 76 at the June solstice, 52 at the equinoxes and 29 at the December solstice; the day is 11 h 03 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW7121FIG. E THE SUN AT CITIZEN STATION GW7121ELEVATION 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 76°EQUINOXES 52°DECEMBER SOLSTICE 29°OCT 16, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 03 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.74 N; THE SUN'S DECLINATION -9.1°TITLECitizen station GW7121, the sunSTATION REPORT · CWOP GW7121TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-GW7121-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 119 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station GW7121, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW7121FIG. 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 GW7121, the instrumentSTATION REPORT · CWOP GW7121TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-GW7121-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

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