Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
GW6101
Latitude
39.04000 N
Longitude
77.49000 W
Elevation
243 ft
Observed
10:40 PMEDT, 1 hour ago
Air temperature
59F
Relative humidity
93%
Pressure
30.13inHg
Wind
1mph
Gust
3mph
Wind direction
209°
Precipitation this hour
0in
Precipitation today
0.2in

Ranking Statistics

In a volunteer observer's own ground

Drawn as the kind of place it stands at. 1,431 instruments in Virginia stand at one.

Station charts

Citizen station GW6101 Report

Rank 1,325 of 1,541 in Virginia, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

Ranking Statistics

247 score79.3of 100

Virginia median
95.9the median score of 1,541 stations
Scoring higher
1,324stations in Virginia
Sharing its score
1no other station
Points deducted
20.717.3 reports received, 3.1 continuity, 0.4 forecast check
Counted at the median
Forecast checknot measured at this station; Virginia median 96.5
Next above
FW2360rank 1,324; ahead on 247 score 79.4 against 79.3
Next below
KC4YVArank 1,326; behind on 247 score 79.3 against 79.2

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 3550.717.7 of 35 pointsVirginia median 97.9341 of 672 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsVirginia median 92.7half its reports arrived within 19 s
  3. Continuityweight 1069.16.9 of 10 pointsVirginia median 100.0longest silence 2 h, on a schedule of one report every 15 min
  4. Accuracyweight 20100.020.0 of 20 pointsVirginia median 100.0its temperature against the airport station KJYO, 4.8 miles away, over 418 readings: typical difference 1.9 °F beyond a steady offset of +0.1 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsVirginia median 100.00 of 418 readings failed their check against its reference station
  6. Forecast checkweight 10-9.7 of 10 points, at the medianVirginia median 96.5-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (45 min), none for 72 (18 h)
Accuracy
Full marks within 2.0 °F of its reference, typically, none beyond 8.5 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
Time to reach Storm Station
20 s9 in 10 within 30 s
Against its reference, 30 days
+0.1 °Fwarmer than the airport station KJYO, 4.8 miles away, on average over 634 readings; typical difference 1.9 °F; also compared with 1 other reference station

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 341 of 672 scheduled reports received, 50.7%.

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 1,541 ranked stations in Virginia on Oct 16 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, 5; 10 to 19 per cent, 17; 20 to 29 per cent, 48; 30 to 39 per cent, 6; 40 to 49 per cent, 81; 50 to 59 per cent, 182; 60 to 69 per cent, 29; 70 to 79 per cent, 130; 80 to 89 per cent, 138; 90 to 99 per cent, 543; 100 per cent, 362. Citizen station GW6101 received 50.7 per cent, 341 of 672 scheduled reports, rank 1,325 of 1,541.WHERE IT RANKS IN VIRGINIA, Oct 16THIS ONE: 50.7%, 341 OF 672, RANK 1,325 OF 1,541PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9510 to 191720 to 294830 to 39640 to 498150 to 5918260 to 692970 to 7913080 to 8913890 to 99543100362STATIONS, LOG SCALE
Chart of Citizen station GW6101's rank in Virginia by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 1,114 of 1,415; 2026-10-06 rank 1,159 of 1,444; 2026-10-07 rank 1,144 of 1,526; 2026-10-08 rank 1,124 of 1,534; 2026-10-09 rank 1,233 of 1,529; 2026-10-10 rank 1,233 of 1,530; 2026-10-11 rank 1,228 of 1,520; 2026-10-12 rank 1,229 of 1,532; 2026-10-13 rank 1,222 of 1,536; 2026-10-14 rank 1,203 of 1,537; 2026-10-15 rank 1,193 of 1,532; 2026-10-16 rank 1,325 of 1,541.ITS RANK IN VIRGINIA, DAY BY DAYRANK, FIRST AT THE TOP15001,0001,500Oct 5Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%362
90 to 99%543
80 to 89%138
70 to 79%130
60 to 69%29
50 to 59%182
40 to 49%81
30 to 39%6
20 to 29%48
10 to 19%17
0 to 9%5
DayRankStations rankedShare received
Oct 16, 20261,3251,54150.7%
Oct 15, 20261,1931,53260.0%
Oct 14, 20261,2031,53758.3%
Oct 13, 20261,2221,53656.7%
Oct 12, 20261,2291,53256.3%
Oct 11, 20261,2281,52054.7%
Oct 10, 20261,2331,53051.7%
Oct 9, 20261,2331,52951.7%
Oct 8, 20261,1241,53461.2%
Oct 7, 20261,1441,52661.5%
Oct 6, 20261,1591,44464.1%
Oct 5, 20261,1141,41565.8%

Station report

Citizen station GW6101, 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 south southwest (209 degrees) at 1 mph, gusting 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Citizen station GW6101, north up: blowing from 209 degrees, the south 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 GW6101FIG. C THE WIND AT CITIZEN STATION GW6101PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 209°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 1 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station GW6101, the windSTATION REPORT · CWOP GW6101TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-GW6101-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 243 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.66 inHg and the temperature at 58.1 F; the station's altimeter setting of 30.13 inHg means its barometer reads 29.87 inHg; it reports 59.0 F, 0.9 F warmer than standard.

Section from sea level of where Citizen station GW6101 stands in the atmosphere, height to scale: the station 243 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.66 inches of mercury, and temperature, 58.1 degrees Fahrenheit; the altimeter setting of 30.13 and the station pressure it means, 29.87.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW6101FIG. D WHERE CITIZEN STATION GW6101 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 GW61011 PER CENT OF THE AIR BELOW IT243 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 HERE29.66 inHgSTANDARD TEMPERATURE HERE58.1 FALTIMETER SETTING, REPORTED30.13 inHgITS BAROMETER READS29.87 inHgTEMPERATURE, REPORTED59.0 FTITLECitizen station GW6101, the columnSTATION REPORT · CWOP GW6101TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-GW6101-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

3The sun

Contents

On Oct 16 the noon sun stands 42 degrees above the horizon at 39.04 N, and the day is 11 h 00 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 GW6101, angles true: on Oct 16 it stands 42 degrees above the horizon, against 74 at the June solstice, 51 at the equinoxes and 28 at the December solstice; the day is 11 h 00 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW6101FIG. E THE SUN AT CITIZEN STATION GW6101ELEVATION 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 28°OCT 16, 42°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 00 MINLEVEL GROUND TAKES 67 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.04 N; THE SUN'S DECLINATION -9.1°TITLECitizen station GW6101, the sunSTATION REPORT · CWOP GW6101TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-GW6101-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 243 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station GW6101, each sensor drawn and labelled with what it read: air temperature, 59.0 f; precipitation gauge, 0.24 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GW6101FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE59.0 FPRECIPITATION GAUGE0.24 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station GW6101, the instrumentSTATION REPORT · CWOP GW6101TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-16IDSR-GW6101-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station GW6101