Storm Station
Sign in

Beside a road

RWIS network, identified by the register

Identifier
CF167
Latitude
40.80744 N
Longitude
122.32237 W
Elevation
1,388 ft
Rank
4,042of 4,465 in California, Oct 16
Observed
11:17 AMPDT, 27 minutes ago
Air temperature
80.8F

Ranking Statistics

Beside a road

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

Station report

Obrien, 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 1,388 ft above sea level, 5 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.45 inHg and the temperature at 54.1 F.

Section from sea level of where Obrien stands in the atmosphere, height to scale: the station 1,388 feet above sea level with 5 per cent of the air below it; the standard atmosphere's pressure there, 28.45 inches of mercury, and temperature, 54.1 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF167FIG. D WHERE OBRIEN 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 ATMOSPHEREOBRIEN5 PER CENT OF THE AIR BELOW IT1,388 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 HERE28.45 inHgSTANDARD TEMPERATURE HERE54.1 FTITLEObrien, the columnSTATION REPORT · RWIS CF167TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-CF167-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 40 degrees above the horizon at 40.81 N, and the day is 10 h 56 min long. Level ground there takes 64 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Obrien, angles true: on Oct 16 it stands 40 degrees above the horizon, against 73 at the June solstice, 49 at the equinoxes and 26 at the December solstice; the day is 10 h 56 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF167FIG. E THE SUN AT OBRIENELEVATION 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 73°EQUINOXES 49°DECEMBER SOLSTICE 26°OCT 16, 40°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 56 MINLEVEL GROUND TAKES 64 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 40.81 N; THE SUN'S DECLINATION -9.1°TITLEObrien, the sunSTATION REPORT · RWIS CF167TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-CF167-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 1,388 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, Obrien, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF167FIG. 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 SCALETITLEObrien, the instrumentSTATION REPORT · RWIS CF167TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-CF167-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

What this instrument measures for

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

Near Obrien