Storm Station
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Beside a road

RWIS network, identified by the register

Identifier
CF162
Latitude
37.77493 N
Longitude
119.01401 W
Elevation
8,031 ft
Rank
2,647of 4,465 in California, Oct 16
Observed
12:45 AMPDT, 29 minutes ago
Air temperature
35.8F
Dew point
21.6F
Relative humidity
56%
Wind
2mph
Gust
4mph
Wind direction
297°

Ranking Statistics

On the radar over US-395 - Obsidian DomeReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Beside a road

Drawn as the kind of place it stands at. 136 instruments in California stand at one.

Station charts

US-395 - Obsidian Dome Report

Rank 2,647 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 score88.3of 100

California median
91.6the median score of 4,465 stations
Scoring higher
2,644stations in California
Sharing its score
4ranks 2,645 to 2,648
Points deducted
11.73.5 continuity, 3.0 reports received, 2.6 accuracy, 1.9 arrival, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
CF149rank 2,646; ahead on reports received 91.9% against 91.3%
Next below
SJTC1rank 2,648; behind on reports received 91.3% against 88.1%

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 3591.432.0 of 35 pointsCalifornia median 98.5614 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1081.58.2 of 10 pointsCalifornia median 81.2half its reports arrived within 19 min
  3. Continuityweight 1065.46.5 of 10 pointsCalifornia median 100.0longest silence 2.3 h, on a schedule of one report every 15 min
  4. Accuracyweight 2086.917.4 of 20 pointsCalifornia median 85.6its temperature against the airport station KMMH, 14.1 miles away, over 571 readings: typical difference 3.8 °F beyond a steady offset of -5.2 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 571 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 (45 min), none for 72 (18 h)
Accuracy
Full marks within 2.9 °F of its reference, typically, none beyond 9.4 °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
2,647of 4,465 in California, Oct 16
Days reported, 30 days
0 of 30
Time to reach Storm Station
19 min9 in 10 within 20 min
Against its reference, 30 days
-4.2 °Fcooler than the airport station KMMH, 14 miles away, on average over 1,028 readings; typical difference 5.8 °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: 614 of 672 scheduled reports received, 91.3%.

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. US-395 - Obsidian Dome received 91.3 per cent, 614 of 672 scheduled reports, rank 2,647 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 91.3%, 614 OF 672, RANK 2,647 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 US-395 - Obsidian Dome's rank in California by how it reported, day by day, from 2026-10-04 to 2026-10-16: 2026-10-04 rank 3,940 of 4,072; 2026-10-05 rank 4,100 of 4,333; 2026-10-06 rank 4,046 of 4,362; 2026-10-07 rank 3,953 of 4,381; 2026-10-08 rank 3,853 of 4,405; 2026-10-09 rank 2,873 of 4,400; 2026-10-10 rank 2,875 of 4,400; 2026-10-11 rank 3,207 of 4,428; 2026-10-12 rank 3,264 of 4,446; 2026-10-13 rank 3,230 of 4,464; 2026-10-14 rank 3,308 of 4,466; 2026-10-15 rank 2,690 of 4,462; 2026-10-16 rank 2,647 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP12,0004,0006,000Oct 4Oct 7Oct 10Oct 13Oct 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, 20262,6474,46591.3%
Oct 15, 20262,6904,46291.0%
Oct 14, 20263,3084,46688.8%
Oct 13, 20263,2304,46489.1%
Oct 12, 20263,2644,44688.5%
Oct 11, 20263,2074,42888.8%
Oct 10, 20262,8754,40087.3%
Oct 9, 20262,8734,40086.9%
Oct 8, 20263,8534,40561.3%
Oct 7, 20263,9534,38150.2%
Oct 6, 20264,0464,36237.0%
Oct 5, 20264,1004,33323.9%
Oct 4, 20263,9404,07210.8%

Station report

US-395 - Obsidian Dome, 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 8,031 ft above sea level, 26 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 22.20 inHg and the temperature at 30.4 F.

Section from sea level of where US-395 - Obsidian Dome stands in the atmosphere, height to scale: the station 8,031 feet above sea level with 26 per cent of the air below it; the standard atmosphere's pressure there, 22.20 inches of mercury, and temperature, 30.4 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF162FIG. D WHERE US-395 - OBSIDIAN DOME STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,00020,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREUS-395 - OBSIDIAN DOME26 PER CENT OF THE AIR BELOW IT8,031 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 FT50 PER CENT OF THE AIR BELOW, 17,970 FTSTANDARD PRESSURE HERE22.20 inHgSTANDARD TEMPERATURE HERE30.4 FTITLEUS-395 - Obsidian Dome, the columnSTATION REPORT · RWIS CF162TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-CF162-1DRAWN 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 37.77 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 US-395 - Obsidian Dome, 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 CF162FIG. E THE SUN AT US-395 - OBSIDIAN DOMEELEVATION 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 37.77 N; THE SUN'S DECLINATION -9.1°TITLEUS-395 - Obsidian Dome, the sunSTATION REPORT · RWIS CF162TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-CF162-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 8,031 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, US-395 - Obsidian Dome, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF162FIG. F THE INSTRUMENTELEVATION OF A ROAD WEATHER STATION, EACH SENSOR WITH WHAT IT READTHE ROAD, IN SECTIONPAVEMENT SENSOR, SET IN THE ROAD-PROBE UNDER THE ROAD-AIR TEMPERATURE ON THE TOWER-WIND AT THE TOP OF THE TOWER-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEUS-395 - Obsidian Dome, the instrumentSTATION REPORT · RWIS CF162TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-CF162-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001Stevenson screen and siting FB-INS-009

What it seesLapse rates and stability FB-ENG-005Water vapour as a gas FB-ENG-011Blizzard FB-EVT-081Ice storm FB-EVT-084Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Humidity variables FB-WAT-002Fog types FB-WAT-020

What this instrument measures for

1 place reads it as one of the nearest to it.

Near US-395 - Obsidian Dome

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