Weather/California/Instruments/DW9579
In a volunteer observer's own ground
CWOP network, identified by the register
Now, today, and the week
On the radar over Citizen station DW9579ReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Drawn as the kind of place it stands at. 1,795 instruments in California stand at one.
-in
Snow on the ground
Station charts
Rank 4,245 of 4,428 in California, 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.
247 score64.4of 100
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.
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
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: 34 of 140 scheduled reports received, 24.2%.
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.
| Share of scheduled reports received | Stations |
|---|---|
| 100% | 743 |
| 90 to 99% | 2,549 |
| 80 to 89% | 278 |
| 70 to 79% | 220 |
| 60 to 69% | 92 |
| 50 to 59% | 261 |
| 40 to 49% | 112 |
| 30 to 39% | 39 |
| 20 to 29% | 29 |
| 10 to 19% | 83 |
| 0 to 9% | 22 |
| Day | Rank | Stations ranked | Share received |
|---|---|---|---|
| Oct 11, 2026 | 4,245 | 4,428 | 24.2% |
| Oct 10, 2026 | 4,253 | 4,400 | 21.6% |
| Oct 9, 2026 | 4,275 | 4,400 | 18.4% |
Station report
Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
At 12 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.91 inHg and the temperature at 59.0 F.
FB-ENG-001, Fig. AAtmosphere in sectionThe whole standard atmosphere this station stands in, from the ground to the edge of space.
FB-ENG-003, Fig. CHydrostatic balanceWhy a barometer 12 ft up reads less: it weighs only the air above it.
On Oct 11 the noon sun stands 45 degrees above the horizon at 37.78 N, and the day is 11 h 15 min long. Level ground there takes 71 per cent of the noon sunlight a surface facing the sun would.
FB-ENG-007, Fig. ARadiation budgetWhere the sunlight that reaches this ground goes once it arrives.
A weather instrument, 12 ft above sea level. Its sensors, as its network builds them.
FB-INS-001, Fig. AWhat an instrument isA surface station taken apart: what each of these sensors is.