Storm Station
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Beside a road

RWIS network, identified by the register

Identifier
CF108
Latitude
37.21310 N
Longitude
120.36266 W
Elevation
200 ft
Rank
3,330of 4,465 in California, Oct 16
Observed
9:50 PMPDT, 39 minutes ago
Air temperature
62.8F
Dew point
36.1F
Relative humidity
37%
Visibility
12.4mi
Wind
3mph
Gust
5mph
Wind direction
75°

Ranking Statistics

On the radar over SR-99 - Le Grand RoadReflectivityStorm 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 - Le Grand Road Report

Rank 3,330 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 score82.5of 100

California median
91.6the median score of 4,465 stations
Scoring higher
3,326stations in California
Sharing its score
5ranks 3,327 to 3,331
Points deducted
17.511.2 reports received, 4.6 continuity, 1.0 arrival, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
CF138rank 3,329; ahead on reports received 72.1% against 68.0%
Next below
DW4623rank 3,331; behind on reports received 68.0% against 59.4%

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 3568.123.8 of 35 pointsCalifornia median 98.5686 of 1,008 scheduled reports received in 7 days
  2. Arrivalweight 1090.49.0 of 10 pointsCalifornia median 81.2half its reports arrived within 15 min
  3. Continuityweight 1053.95.4 of 10 pointsCalifornia median 100.0longest silence 2.2 h, on a schedule of one report every 10 min
  4. Accuracyweight 20100.020.0 of 20 pointsCalifornia median 85.6its temperature against the airport station KMCE, 9.9 miles away, over 433 readings: typical difference 2.0 °F beyond a steady offset of -0.0 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 433 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 (30 min), none for 72 (12 h)
Accuracy
Full marks within 2.5 °F of its reference, typically, none beyond 9.0 °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
3,330of 4,465 in California, Oct 16
Days reported, 30 days
0 of 30
Time to reach Storm Station
15 min9 in 10 within 24 min
Against its reference, 30 days
+0.1 °Fwarmer than the airport station KMCE, 9.9 miles away, on average over 816 readings; typical difference 2.3 °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: 686 of 1,008 scheduled reports received, 68.0%.

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. SR-99 - Le Grand Road received 68.0 per cent, 686 of 1,008 scheduled reports, rank 3,330 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 68.0%, 686 OF 1,008, RANK 3,330 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 SR-99 - Le Grand Road's rank in California by how it reported, day by day, from 2026-10-04 to 2026-10-16: 2026-10-04 rank 3,922 of 4,072; 2026-10-05 rank 4,107 of 4,333; 2026-10-06 rank 4,093 of 4,362; 2026-10-07 rank 4,066 of 4,381; 2026-10-08 rank 4,013 of 4,405; 2026-10-09 rank 3,630 of 4,400; 2026-10-10 rank 3,637 of 4,400; 2026-10-11 rank 3,635 of 4,428; 2026-10-12 rank 3,589 of 4,446; 2026-10-13 rank 3,614 of 4,464; 2026-10-14 rank 3,670 of 4,466; 2026-10-15 rank 3,501 of 4,462; 2026-10-16 rank 3,330 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, 20263,3304,46568.0%
Oct 15, 20263,5014,46266.8%
Oct 14, 20263,6704,46666.1%
Oct 13, 20263,6144,46466.3%
Oct 12, 20263,5894,44666.0%
Oct 11, 20263,6354,42866.0%
Oct 10, 20263,6374,40064.4%
Oct 9, 20263,6304,40064.0%
Oct 8, 20264,0134,40545.7%
Oct 7, 20264,0664,38136.9%
Oct 6, 20264,0934,36227.5%
Oct 5, 20264,1074,33317.8%
Oct 4, 20263,9224,0728.0%

Station report

SR-99 - Le Grand Road, 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 200 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.71 inHg and the temperature at 58.3 F.

Section from sea level of where SR-99 - Le Grand Road stands in the atmosphere, height to scale: the station 200 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.71 inches of mercury, and temperature, 58.3 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF108FIG. D WHERE SR-99 - LE GRAND ROAD 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 - LE GRAND ROAD1 PER CENT OF THE AIR BELOW IT200 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 HERE29.71 inHgSTANDARD TEMPERATURE HERE58.3 FTITLESR-99 - Le Grand Road, the columnSTATION REPORT · RWIS CF108TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-CF108-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 44 degrees above the horizon at 37.21 N, and the day is 11 h 04 min long. Level ground there takes 69 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at SR-99 - Le Grand Road, angles true: on Oct 16 it stands 44 degrees above the horizon, against 76 at the June solstice, 53 at the equinoxes and 29 at the December solstice; the day is 11 h 04 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF108FIG. E THE SUN AT SR-99 - LE GRAND ROADELEVATION 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 53°DECEMBER SOLSTICE 29°OCT 16, 44°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 04 MINLEVEL GROUND TAKES 69 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.21 N; THE SUN'S DECLINATION -9.1°TITLESR-99 - Le Grand Road, the sunSTATION REPORT · RWIS CF108TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-CF108-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 200 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, SR-99 - Le Grand Road, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF108FIG. 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 - Le Grand Road, the instrumentSTATION REPORT · RWIS CF108TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-CF108-3DRAWN 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

Near SR-99 - Le Grand Road

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