Storm Station

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
KD8ZVC
Latitude
39.17000 N
Longitude
121.05000 W
Elevation
2,571 ft
Rank
-
Air temperature
77F
Relative humidity
32%
Pressure
29.81inHg
Wind
0mph
Gust
0mph
Wind direction
248°
Precipitation this hour
0in
Precipitation today
0in

In a volunteer observer's own ground

Drawn as the kind of place it stands at. 1,788 instruments in California stand at one.

Station report

Citizen station KD8ZVC, in 4 sheets

Drawn from its report of undefined, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The wind

Contents

Calm.

Plan of the wind at Citizen station KD8ZVC, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD8ZVCFIG. C THE WIND AT CITIZEN STATION KD8ZVCPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station KD8ZVC, the windSTATION REPORT · CWOP KD8ZVCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-06IDSR-KD8ZVC-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 2,571 ft above sea level, 9 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.24 inHg and the temperature at 49.8 F; the station's altimeter setting of 29.81 inHg means its barometer reads 27.14 inHg; it reports 77.0 F, 27.2 F warmer than standard.

Section from sea level of where Citizen station KD8ZVC stands in the atmosphere, height to scale: the station 2,571 feet above sea level with 9 per cent of the air below it; the standard atmosphere's pressure there, 27.24 inches of mercury, and temperature, 49.8 degrees Fahrenheit; the altimeter setting of 29.81 and the station pressure it means, 27.14.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD8ZVCFIG. D WHERE CITIZEN STATION KD8ZVC 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 ATMOSPHERECITIZEN STATION KD8ZVC9 PER CENT OF THE AIR BELOW IT2,571 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 HERE27.24 inHgSTANDARD TEMPERATURE HERE49.8 FALTIMETER SETTING, REPORTED29.81 inHgITS BAROMETER READS27.14 inHgTEMPERATURE, REPORTED77.0 FTITLECitizen station KD8ZVC, the columnSTATION REPORT · CWOP KD8ZVCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-06IDSR-KD8ZVC-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

3The sun

Contents

On Oct 6 the noon sun stands 45 degrees above the horizon at 39.17 N, and the day is 11 h 25 min long. Level ground there takes 71 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station KD8ZVC, angles true: on Oct 6 it stands 45 degrees above the horizon, against 74 at the June solstice, 51 at the equinoxes and 27 at the December solstice; the day is 11 h 25 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD8ZVCFIG. E THE SUN AT CITIZEN STATION KD8ZVCELEVATION 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 74°EQUINOXES 51°DECEMBER SOLSTICE 27°OCT 6, 45°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 25 MINLEVEL GROUND TAKES 71 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.17 N; THE SUN'S DECLINATION -5.4°TITLECitizen station KD8ZVC, the sunSTATION REPORT · CWOP KD8ZVCTYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-06IDSR-KD8ZVC-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 2,571 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station KD8ZVC, each sensor drawn and labelled with what it read: air temperature, 77.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD8ZVCFIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE77.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station KD8ZVC, the instrumentSTATION REPORT · CWOP KD8ZVCTYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-06IDSR-KD8ZVC-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station KD8ZVC