Storm Station
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Beside a road

RWIS network, identified by the register

Identifier
CF039
Latitude
38.00322 N
Longitude
121.25722 W
Elevation
36 ft
Rank
4,302of 4,461 in California, Oct 17

Ranking Statistics

On the radar over SR-99 - Wilson WayReflectivityStorm 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

SR-99 - Wilson Way Report

Rank 4,302 of 4,461 in California, Oct 17. 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 score57.6of 100

California median
90.9the median score of 4,461 stations
Scoring higher
4,300stations in California
Sharing its score
2ranks 4,301 to 4,302
Points deducted
42.430.5 reports received, 10.0 continuity, 1.0 arrival, 0.9 forecast check
Counted at the median
Forecast checknot measured at this station; California median 90.8
Next above
CW6906rank 4,301; ahead on reports received 18.6% against 12.8%
Next below
FW7603rank 4,303; behind on 247 score 57.6 against 57.5

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 3512.94.5 of 35 pointsCalifornia median 98.865 of 504 scheduled reports received in 7 days
  2. Arrivalweight 1090.19.0 of 10 pointsCalifornia median 81.1half its reports arrived within 15 min
  3. Continuityweight 100.00.0 of 10 pointsCalifornia median 100.0longest silence 3 days, on a schedule of one report every 20 min
  4. Accuracyweight 20100.020.0 of 20 pointsCalifornia median 83.2its temperature against the airport station KSCK, 8.0 miles away, over 46 readings: typical difference 1.9 °F beyond a steady offset of +1.0 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 46 readings failed their check against its reference station
  6. Forecast checkweight 10-9.1 of 10 points, at the medianCalifornia median 90.8-

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 (60 min), none for 72 (24 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
4,302of 4,461 in California, Oct 17
Days reported, 30 days
0 of 30
Time to reach Storm Station
15 min9 in 10 within 24 min
Against its reference, 30 days
+0.6 °Fwarmer than the airport station KSCK, 8.0 miles away, on average over 404 readings; typical difference 2.5 °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: 65 of 504 scheduled reports received, 12.8%.

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 4,461 ranked stations in California on Oct 17 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, 74; 10 to 19 per cent, 106; 20 to 29 per cent, 32; 30 to 39 per cent, 17; 40 to 49 per cent, 114; 50 to 59 per cent, 278; 60 to 69 per cent, 133; 70 to 79 per cent, 222; 80 to 89 per cent, 396; 90 to 99 per cent, 2,009; 100 per cent, 1,080. SR-99 - Wilson Way received 12.8 per cent, 65 of 504 scheduled reports, rank 4,302 of 4,461.WHERE IT RANKS IN CALIFORNIA, Oct 17THIS ONE: 12.8%, 65 OF 504, RANK 4,302 OF 4,461PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101001,0000 to 97410 to 1910620 to 293230 to 391740 to 4911450 to 5927860 to 6913370 to 7922280 to 8939690 to 992,0091001,080STATIONS, LOG SCALE
Chart of SR-99 - Wilson Way's rank in California by how it reported, day by day, from 2026-10-04 to 2026-10-17: 2026-10-04 rank 3,963 of 4,072; 2026-10-05 rank 4,173 of 4,333; 2026-10-06 rank 4,153 of 4,362; 2026-10-07 rank 4,120 of 4,381; 2026-10-08 rank 4,085 of 4,405; 2026-10-09 rank 4,100 of 4,400; 2026-10-10 rank 4,106 of 4,400; 2026-10-11 rank 4,176 of 4,428; 2026-10-12 rank 4,140 of 4,446; 2026-10-13 rank 4,202 of 4,464; 2026-10-14 rank 4,181 of 4,466; 2026-10-15 rank 4,215 of 4,462; 2026-10-16 rank 4,291 of 4,465; 2026-10-17 rank 4,302 of 4,461.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP12,0004,0006,000Oct 4Oct 7Oct 10Oct 13Oct 16Oct 17
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%1,080
90 to 99%2,009
80 to 89%396
70 to 79%222
60 to 69%133
50 to 59%278
40 to 49%114
30 to 39%17
20 to 29%32
10 to 19%106
0 to 9%74
DayRankStations rankedShare received
Oct 17, 20264,3024,46112.8%
Oct 16, 20264,2914,46517.0%
Oct 15, 20264,2154,46230.3%
Oct 14, 20264,1814,46641.4%
Oct 13, 20264,2024,46428.2%
Oct 12, 20264,1404,44636.2%
Oct 11, 20264,1764,42845.3%
Oct 10, 20264,1064,40052.9%
Oct 9, 20264,1004,40052.9%
Oct 8, 20264,0854,40541.7%
Oct 7, 20264,1204,38134.1%
Oct 6, 20264,1534,36225.2%
Oct 5, 20264,1734,33316.7%
Oct 4, 20263,9634,0727.6%

Station report

SR-99 - Wilson Way, 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 36 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.88 inHg and the temperature at 58.9 F.

Section from sea level of where SR-99 - Wilson Way stands in the atmosphere, height to scale: the station 36 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.88 inches of mercury, and temperature, 58.9 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF039FIG. D WHERE SR-99 - WILSON WAY 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 ATMOSPHERESR-99 - WILSON WAY0 PER CENT OF THE AIR BELOW IT36 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 HERE29.88 inHgSTANDARD TEMPERATURE HERE58.9 FTITLESR-99 - Wilson Way, the columnSTATION REPORT · RWIS CF039TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-17IDSR-CF039-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 17 the noon sun stands 43 degrees above the horizon at 38.00 N, and the day is 11 h 00 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 SR-99 - Wilson Way, angles true: on Oct 17 it stands 43 degrees above the horizon, against 75 at the June solstice, 52 at the equinoxes and 29 at the December solstice; the day is 11 h 00 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF039FIG. E THE SUN AT SR-99 - WILSON WAYELEVATION 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 75°EQUINOXES 52°DECEMBER SOLSTICE 29°OCT 17, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 00 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 38.00 N; THE SUN'S DECLINATION -9.5°TITLESR-99 - Wilson Way, the sunSTATION REPORT · RWIS CF039TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-17IDSR-CF039-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 36 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, SR-99 - Wilson Way, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF039FIG. 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 SCALETITLESR-99 - Wilson Way, the instrumentSTATION REPORT · RWIS CF039TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-17IDSR-CF039-3DRAWN 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-084Snow squall FB-EVT-086Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Humidity variables FB-WAT-002Fog types FB-WAT-020

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