Station report
Citizen station KN7D, 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.
1 The wind2 The column3 The sun4 The instrumentFrom the south southeast (159 degrees) at 8 mph, gusting 22 mph: force 3, a gentle breeze on the Beaufort scale.
Plan of the wind at Citizen station KN7D, north up: blowing from 159 degrees, the south southeast, at 8 miles an hour, gusting 22; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked. 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 KN7D FIG. C THE WIND AT CITIZEN STATION KN7D PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALE N E S W THE STATION FROM 159° BEAUFORT FORCE LEAST WIND, MPH 0 CALM 0 1 LIGHT AIR 1 2 LIGHT BREEZE 4 3 GENTLE BREEZE 8 NOW, 8 MPH 4 MODERATE BREEZE 13 5 FRESH BREEZE 19 GUST, 22 MPH 6 STRONG BREEZE 25 7 NEAR GALE 32 8 GALE 39 9 STRONG GALE 47 10 STORM 55 11 VIOLENT STORM 64 12 HURRICANE FORCE 73 TITLE Citizen station KN7D, the wind STATION REPORT · CWOP KN7D TYPE PLAN north up SCALE NOT TO SCALE REV AS REPORTED SHEET 1 of 4 DATE 2026-10-11 ID SR-KN7D-1 DRAWN AS linework on paper SOURCES FB-EVT-150, FB-ENG-008 At 4,427 ft above sea level, 15 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.43 inHg and the temperature at 43.2 F; the station's altimeter setting of 29.62 inHg means its barometer reads 25.18 inHg; it reports 73.0 F, 29.8 F warmer than standard.
Section from sea level of where Citizen station KN7D stands in the atmosphere, height to scale: the station 4,427 feet above sea level with 15 per cent of the air below it; the standard atmosphere's pressure there, 25.43 inches of mercury, and temperature, 43.2 degrees Fahrenheit; the altimeter setting of 29.62 and the station pressure it means, 25.18. 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 KN7D FIG. D WHERE CITIZEN STATION KN7D 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 CITIZEN STATION KN7D 15 PER CENT OF THE AIR BELOW IT 4,427 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 25.43 inHg STANDARD TEMPERATURE HERE 43.2 F ALTIMETER SETTING, REPORTED 29.62 inHg ITS BAROMETER READS 25.18 inHg TEMPERATURE, REPORTED 73.0 F TITLE Citizen station KN7D, the column STATION REPORT · CWOP KN7D TYPE SECTION SCALE HEIGHT TO SCALE REV AS REPORTED SHEET 2 of 4 DATE 2026-10-11 ID SR-KN7D-2 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 11 the noon sun stands 42 degrees above the horizon at 41.04 N, and the day is 11 h 09 min long. Level ground there takes 67 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Citizen station KN7D, angles true: on Oct 11 it stands 42 degrees above the horizon, against 72 at the June solstice, 49 at the equinoxes and 26 at the December solstice; the day is 11 h 09 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 KN7D FIG. E THE SUN AT CITIZEN STATION KN7D 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 72° EQUINOXES 49° DECEMBER SOLSTICE 26° OCT 11, 42° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 09 MIN LEVEL GROUND TAKES 67 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 41.04 N; THE SUN'S DECLINATION -7.2° TITLE Citizen station KN7D, the sun STATION REPORT · CWOP KN7D TYPE ELEVATION SCALE ANGLES TRUE REV AS REPORTED SHEET 3 of 4 DATE 2026-10-11 ID SR-KN7D-3 DRAWN AS linework on paper SOURCES FB-ENG-007 A weather instrument, 4,427 ft above sea level. Its latest report is written on the sensors that made it.
Elevation of the instrument, Citizen station KN7D, each sensor drawn and labelled with what it read: air temperature, 73.0 f; precipitation gauge, 0.01 in today. 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 KN7D FIG. F THE INSTRUMENT ELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READ ANTENNA, SENDING BY SATELLITE - AIR TEMPERATURE 73.0 F PRECIPITATION GAUGE 0.01 IN TODAY SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALE TITLE Citizen station KN7D, the instrument STATION REPORT · CWOP KN7D TYPE ELEVATION SCALE SCHEMATIC REV AS REPORTED SHEET 4 of 4 DATE 2026-10-11 ID SR-KN7D-4 DRAWN AS linework on paper SOURCES FB-INS-001 
FB-EVT-150, Fig. AHigh wind
FB-ENG-008, Fig. ACoriolis as geometry
FB-ENG-001, Fig. AAtmosphere in section
FB-ENG-003, Fig. CHydrostatic balance
FB-ENG-007, Fig. ARadiation budget
FB-INS-001, Fig. AWhat an instrument is