Storm Station

Beside a road

RWIS network, identified by the register

Identifier
CF121
Latitude
37.19749 N
Longitude
120.34325 W
Elevation
213 ft
Rank
3,916of 4,072 in California, Oct 4
Air temperature
61.9F
Dew point
38.5F
Relative humidity
42%
Visibility
12.4mi
Wind
6mph
Gust
7mph
Wind direction
56°

Beside a road

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

Station report

SR-99 - Buchanan Hollow, 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 213 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.69 inHg and the temperature at 58.2 F.

Section from sea level of where SR-99 - Buchanan Hollow stands in the atmosphere, height to scale: the station 213 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.69 inches of mercury, and temperature, 58.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF121FIG. D WHERE SR-99 - BUCHANAN HOLLOW 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 - BUCHANAN HOLLOW1 PER CENT OF THE AIR BELOW IT213 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 HERE29.69 inHgSTANDARD TEMPERATURE HERE58.2 FTITLESR-99 - Buchanan Hollow, the columnSTATION REPORT · RWIS CF121TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-04IDSR-CF121-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 4 the noon sun stands 48 degrees above the horizon at 37.20 N, and the day is 11 h 32 min long. Level ground there takes 75 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at SR-99 - Buchanan Hollow, angles true: on Oct 4 it stands 48 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 32 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF121FIG. E THE SUN AT SR-99 - BUCHANAN HOLLOWELEVATION 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 4, 48°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 32 MINLEVEL GROUND TAKES 75 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.20 N; THE SUN'S DECLINATION -4.6°TITLESR-99 - Buchanan Hollow, the sunSTATION REPORT · RWIS CF121TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-04IDSR-CF121-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 213 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, SR-99 - Buchanan Hollow, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF121FIG. 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 - Buchanan Hollow, the instrumentSTATION REPORT · RWIS CF121TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-04IDSR-CF121-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near SR-99 - Buchanan Hollow