Station report
SR-2 - Wrightwood Fire Station, 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.
1 The column2 The sun3 The instrumentAt 5,921 ft above sea level, 20 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 24.05 inHg and the temperature at 37.9 F.
Section from sea level of where SR-2 - Wrightwood Fire Station stands in the atmosphere, height to scale: the station 5,921 feet above sea level with 20 per cent of the air below it; the standard atmosphere's pressure there, 24.05 inches of mercury, and temperature, 37.9 degrees Fahrenheit. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT CF139 FIG. D WHERE SR-2 - WRIGHTWOOD FIRE STATION STANDS IN THE ATMOSPHERE SECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHERE FT ABOVE SEA LEVEL 0 5,000 10,000 15,000 SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERE SR-2 - WRIGHTWOOD FIRE STATION 20 PER CENT OF THE AIR BELOW IT 5,921 FT 10 PER CENT OF THE AIR BELOW, 2,890 FT 20 PER CENT OF THE AIR BELOW, 6,050 FT 30 PER CENT OF THE AIR BELOW, 9,540 FT 40 PER CENT OF THE AIR BELOW, 13,470 FT STANDARD PRESSURE HERE 24.05 inHg STANDARD TEMPERATURE HERE 37.9 F TITLE SR-2 - Wrightwood Fire Station, the column STATION REPORT · RWIS CF139 TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-04 ID SR-CF139-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 4 the noon sun stands 51 degrees above the horizon at 34.36 N, and the day is 11 h 35 min long. Level ground there takes 78 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at SR-2 - Wrightwood Fire Station, angles true: on Oct 4 it stands 51 degrees above the horizon, against 79 at the June solstice, 56 at the equinoxes and 32 at the December solstice; the day is 11 h 35 min long. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT CF139 FIG. E THE SUN AT SR-2 - WRIGHTWOOD FIRE STATION ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUE THE STATION JUNE SOLSTICE 79° EQUINOXES 56° DECEMBER SOLSTICE 32° OCT 4, 51° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 35 MIN LEVEL GROUND TAKES 78 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 34.36 N; THE SUN'S DECLINATION -4.6° TITLE SR-2 - Wrightwood Fire Station, the sun STATION REPORT · RWIS CF139 TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-04 ID SR-CF139-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A road weather station, 5,921 ft above sea level. Its sensors, as its network builds them.
Elevation of a road weather station, SR-2 - Wrightwood Fire Station, each sensor drawn and labelled with what it read: no reading in the last day. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT CF139 FIG. F THE INSTRUMENT ELEVATION OF A ROAD WEATHER STATION, EACH SENSOR WITH WHAT IT READ THE ROAD, IN SECTION PAVEMENT 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 SCALE TITLE SR-2 - Wrightwood Fire Station, the instrument STATION REPORT · RWIS CF139 TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-04 ID SR-CF139-3 DRAWN AS linework on paper SOURCES FB-INS-001