Storm Station
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Beside a road

RWIS network, identified by the register

Identifier
CF079
Latitude
36.87447 N
Longitude
119.79325 W
Elevation
285 ft
Rank
3,745of 4,465 in California, Oct 16
Observed
8:19 PMPDT, 21 minutes ago
Air temperature
68F
Dew point
45.9F
Relative humidity
45%
Wind
1mph
Gust
1mph
Wind direction
90°

Ranking Statistics

On the radar over SR-41 - San Joaquin RiverReflectivityStorm 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-41 - San Joaquin River Report

Rank 3,745 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 score78.6of 100

California median
91.6the median score of 4,465 stations
Scoring higher
3,739stations in California
Sharing its score
12ranks 3,740 to 3,751
Points deducted
21.49.4 reports received, 5.3 accuracy, 5.0 continuity, 1.0 arrival, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
PGHC1rank 3,744; ahead on reports received 74.4% against 73.1%
Next below
FW0494rank 3,746; behind on reports received 73.1% against 68.7%

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 3573.125.6 of 35 pointsCalifornia median 98.5819 of 1,120 scheduled reports received in 7 days
  2. Arrivalweight 1090.19.0 of 10 pointsCalifornia median 81.2half its reports arrived within 15 min
  3. Continuityweight 1050.15.0 of 10 pointsCalifornia median 100.0longest silence 2.2 h, on a schedule of one report every 9 min
  4. Accuracyweight 2073.714.7 of 20 pointsCalifornia median 85.6its temperature against the airport station KFAT, 7.7 miles away, over 840 readings: typical difference 4.0 °F beyond a steady offset of -3.6 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 840 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 (27 min), none for 72 (10.8 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
3,745of 4,465 in California, Oct 16
Days reported, 30 days
0 of 30
Time to reach Storm Station
15 min9 in 10 within 20 min
Against its reference, 30 days
-4.4 °Fcooler than the airport station KFAT, 7.7 miles away, on average over 1,097 readings; typical difference 6.4 °F; also compared with 1 other reference station

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: 819 of 1,120 scheduled reports received, 73.1%.

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-41 - San Joaquin River received 73.1 per cent, 819 of 1,120 scheduled reports, rank 3,745 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 73.1%, 819 OF 1,120, RANK 3,745 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-41 - San Joaquin River's rank in California by how it reported, day by day, from 2026-10-04 to 2026-10-16: 2026-10-04 rank 3,989 of 4,072; 2026-10-05 rank 4,253 of 4,333; 2026-10-06 rank 4,250 of 4,362; 2026-10-07 rank 4,220 of 4,381; 2026-10-08 rank 4,198 of 4,405; 2026-10-09 rank 4,024 of 4,400; 2026-10-10 rank 4,021 of 4,400; 2026-10-11 rank 4,045 of 4,428; 2026-10-12 rank 3,941 of 4,446; 2026-10-13 rank 3,996 of 4,464; 2026-10-14 rank 3,987 of 4,466; 2026-10-15 rank 3,843 of 4,462; 2026-10-16 rank 3,745 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, 20263,7454,46573.1%
Oct 15, 20263,8434,46272.5%
Oct 14, 20263,9874,46671.4%
Oct 13, 20263,9964,46471.4%
Oct 12, 20263,9414,44671.0%
Oct 11, 20264,0454,42871.1%
Oct 10, 20264,0214,40070.0%
Oct 9, 20264,0244,40069.7%
Oct 8, 20264,1984,40549.7%
Oct 7, 20264,2204,38140.2%
Oct 6, 20264,2504,36230.0%
Oct 5, 20264,2534,33319.5%
Oct 4, 20263,9894,0729.0%

Station report

SR-41 - San Joaquin River, 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 285 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.61 inHg and the temperature at 58.0 F.

Section from sea level of where SR-41 - San Joaquin River stands in the atmosphere, height to scale: the station 285 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.61 inches of mercury, and temperature, 58.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF079FIG. D WHERE SR-41 - SAN JOAQUIN RIVER 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-41 - SAN JOAQUIN RIVER1 PER CENT OF THE AIR BELOW IT285 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 HERE29.61 inHgSTANDARD TEMPERATURE HERE58.0 FTITLESR-41 - San Joaquin River, the columnSTATION REPORT · RWIS CF079TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-CF079-1DRAWN 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 36.87 N, and the day is 11 h 05 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-41 - San Joaquin River, angles true: on Oct 16 it stands 44 degrees above the horizon, against 77 at the June solstice, 53 at the equinoxes and 30 at the December solstice; the day is 11 h 05 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF079FIG. E THE SUN AT SR-41 - SAN JOAQUIN RIVERELEVATION 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 77°EQUINOXES 53°DECEMBER SOLSTICE 30°OCT 16, 44°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 05 MINLEVEL GROUND TAKES 69 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 36.87 N; THE SUN'S DECLINATION -9.1°TITLESR-41 - San Joaquin River, the sunSTATION REPORT · RWIS CF079TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-CF079-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 285 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, SR-41 - San Joaquin River, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF079FIG. 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-41 - San Joaquin River, the instrumentSTATION REPORT · RWIS CF079TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-CF079-3DRAWN 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 SR-41 - San Joaquin River

Gauges

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