Storm Station

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
FW6864
Latitude
39.20000 N
Longitude
76.75000 W
Elevation
202 ft
Rank
-
Air temperature
61F
Relative humidity
93%
Pressure
30.22inHg
Wind
1mph
Gust
3mph
Wind direction
240°
Precipitation this hour
0in
Precipitation today
0.1in

On the radar over Citizen station FW6864ReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

In a volunteer observer's own ground

Drawn as the kind of place it stands at. 564 instruments in Maryland stand at one.

Station charts

Citizen station FW6864 Report

Rank
-
Time to reach Storm Station
11 s9 in 10 within 28 s
Against its reference, 30 days
-0.2 °Fcooler than the airport station KBWI, 4.0 miles away, on average over 20 readings; typical difference 0.6 °F; also compared with 1 other reference station

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

Chart of the 564 ranked stations in Maryland on Oct 4 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 2; 10 to 19 per cent, 8; 20 to 29 per cent, 14; 30 to 39 per cent, 16; 40 to 49 per cent, 11; 50 to 59 per cent, 11; 60 to 69 per cent, 42; 70 to 79 per cent, 96; 80 to 89 per cent, 25; 90 to 99 per cent, 190; 100 per cent, 149.WHERE IT RANKS IN MARYLAND, Oct 4PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9210 to 19820 to 291430 to 391640 to 491150 to 591160 to 694270 to 799680 to 892590 to 99190100149STATIONS, LOG SCALE
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%149
90 to 99%190
80 to 89%25
70 to 79%96
60 to 69%42
50 to 59%11
40 to 49%11
30 to 39%16
20 to 29%14
10 to 19%8
0 to 9%2

Station report

Citizen station FW6864, 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

From the west southwest (240 degrees) at 1 mph, gusting 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Citizen station FW6864, north up: blowing from 240 degrees, the west southwest, at 1 miles an hour, gusting 3; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW6864FIG. C THE WIND AT CITIZEN STATION FW6864PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 1 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station FW6864, the windSTATION REPORT · CWOP FW6864TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-04IDSR-FW6864-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 202 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.70 inHg and the temperature at 58.3 F; the station's altimeter setting of 30.22 inHg means its barometer reads 30.00 inHg; it reports 61.0 F, 2.7 F warmer than standard.

Section from sea level of where Citizen station FW6864 stands in the atmosphere, height to scale: the station 202 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.70 inches of mercury, and temperature, 58.3 degrees Fahrenheit; the altimeter setting of 30.22 and the station pressure it means, 30.00.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW6864FIG. D WHERE CITIZEN STATION FW6864 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 FW68641 PER CENT OF THE AIR BELOW IT202 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 HERE29.70 inHgSTANDARD TEMPERATURE HERE58.3 FALTIMETER SETTING, REPORTED30.22 inHgITS BAROMETER READS30.00 inHgTEMPERATURE, REPORTED61.0 FTITLECitizen station FW6864, the columnSTATION REPORT · CWOP FW6864TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-04IDSR-FW6864-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

3The sun

Contents

On Oct 4 the noon sun stands 46 degrees above the horizon at 39.20 N, and the day is 11 h 30 min long. Level ground there takes 72 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station FW6864, angles true: on Oct 4 it stands 46 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 30 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW6864FIG. E THE SUN AT CITIZEN STATION FW6864ELEVATION 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 4, 46°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 30 MINLEVEL GROUND TAKES 72 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.20 N; THE SUN'S DECLINATION -4.5°TITLECitizen station FW6864, the sunSTATION REPORT · CWOP FW6864TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-04IDSR-FW6864-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 202 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station FW6864, each sensor drawn and labelled with what it read: air temperature, 61.0 f; precipitation gauge, 0.05 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FW6864FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE61.0 FPRECIPITATION GAUGE0.05 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station FW6864, the instrumentSTATION REPORT · CWOP FW6864TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-04IDSR-FW6864-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station FW6864

Gauges

Weather instruments

Places