Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
DW9174
Latitude
39.27000 N
Longitude
77.67000 W
Elevation
502 ft
Rank
1,378of 1,541 in Virginia, Oct 16
Observed
12:44 AMEDT, 46 minutes ago
Air temperature
59F
Relative humidity
93%
Pressure
30.06inHg
Wind
0mph
Gust
2mph
Wind direction
143°
Precipitation this hour
0in
Precipitation today
0in

Ranking Statistics

On the radar over Citizen station DW9174ReflectivityStorm 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. 1,431 instruments in Virginia stand at one.

Station charts

Citizen station DW9174 Report

Rank 1,378 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 score78.2of 100

Virginia median
95.9the median score of 1,541 stations
Scoring higher
1,377stations in Virginia
Sharing its score
5ranks 1,378 to 1,382
Points deducted
21.814.2 reports received, 3.7 accuracy, 3.5 continuity, 0.4 forecast check
Counted at the median
Forecast checknot measured at this station; Virginia median 96.5
Next above
VA-GN-8rank 1,377; ahead on 247 score 78.3 against 78.2
Next below
GW6448rank 1,379; behind on reports received 59.3% against 51.7%

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 3559.420.8 of 35 pointsVirginia median 97.998 of 165 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsVirginia median 92.7half its reports arrived within 20 s
  3. Continuityweight 1064.86.5 of 10 pointsVirginia median 100.0longest silence 9.3 h, on a schedule of one report every 61 min
  4. Accuracyweight 2081.516.3 of 20 pointsVirginia median 100.0its temperature against the airport station KJYO, 14.2 miles away, over 116 readings: typical difference 4.1 °F beyond a steady offset of -0.5 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsVirginia median 100.00 of 116 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 61 min
Continuity
Full marks for a longest silence of 3 reports or less (3.1 h), none for 72 (73.2 h)
Accuracy
Full marks within 2.9 °F of its reference, typically, none beyond 9.4 °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
Rank
1,378of 1,541 in Virginia, Oct 16
Time to reach Storm Station
20 s9 in 10 within 31 s
Against its reference, 30 days
-0.6 °Fcooler than the airport station KJYO, 14 miles away, on average over 210 readings; typical difference 4.0 °F

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: 98 of 165 scheduled reports received, 59.3%.

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 DW9174 received 59.3 per cent, 98 of 165 scheduled reports, rank 1,378 of 1,541.WHERE IT RANKS IN VIRGINIA, Oct 16THIS ONE: 59.3%, 98 OF 165, RANK 1,378 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 DW9174's rank in Virginia by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 1,294 of 1,415; 2026-10-06 rank 1,353 of 1,444; 2026-10-07 rank 1,270 of 1,526; 2026-10-08 rank 1,236 of 1,534; 2026-10-09 rank 1,316 of 1,529; 2026-10-10 rank 1,310 of 1,530; 2026-10-11 rank 1,354 of 1,520; 2026-10-12 rank 1,370 of 1,532; 2026-10-13 rank 1,240 of 1,536; 2026-10-14 rank 1,255 of 1,537; 2026-10-15 rank 1,351 of 1,532; 2026-10-16 rank 1,378 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, 20261,3781,54159.3%
Oct 15, 20261,3511,53259.8%
Oct 14, 20261,2551,53758.6%
Oct 13, 20261,2401,53659.3%
Oct 12, 20261,3701,53250.2%
Oct 11, 20261,3541,52050.2%
Oct 10, 20261,3101,53053.9%
Oct 9, 20261,3161,52953.6%
Oct 8, 20261,2361,53449.0%
Oct 7, 20261,2701,52648.7%
Oct 6, 20261,3531,44438.4%
Oct 5, 20261,2941,41546.6%

Station report

Citizen station DW9174, 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 DW9174, 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 DW9174FIG. C THE WIND AT CITIZEN STATION DW9174PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR1GUST, 2 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station DW9174, the windSTATION REPORT · CWOP DW9174TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-DW9174-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 502 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.38 inHg and the temperature at 57.2 F; the station's altimeter setting of 30.06 inHg means its barometer reads 29.52 inHg; it reports 59.0 F, 1.8 F warmer than standard.

Section from sea level of where Citizen station DW9174 stands in the atmosphere, height to scale: the station 502 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.38 inches of mercury, and temperature, 57.2 degrees Fahrenheit; the altimeter setting of 30.06 and the station pressure it means, 29.52.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW9174FIG. D WHERE CITIZEN STATION DW9174 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 DW91742 PER CENT OF THE AIR BELOW IT502 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 HERE29.38 inHgSTANDARD TEMPERATURE HERE57.2 FALTIMETER SETTING, REPORTED30.06 inHgITS BAROMETER READS29.52 inHgTEMPERATURE, REPORTED59.0 FTITLECitizen station DW9174, the columnSTATION REPORT · CWOP DW9174TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-DW9174-2DRAWN 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 39.27 N, and the day is 10 h 60 min long. Level ground there takes 66 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station DW9174, angles true: on Oct 16 it stands 42 degrees above the horizon, against 74 at the June solstice, 51 at the equinoxes and 27 at the December solstice; the day is 10 h 60 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW9174FIG. E THE SUN AT CITIZEN STATION DW9174ELEVATION 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 16, 42°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 60 MINLEVEL GROUND TAKES 66 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.27 N; THE SUN'S DECLINATION -9.1°TITLECitizen station DW9174, the sunSTATION REPORT · CWOP DW9174TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-DW9174-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 502 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station DW9174, each sensor drawn and labelled with what it read: air temperature, 59.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW9174FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE59.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station DW9174, the instrumentSTATION REPORT · CWOP DW9174TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-16IDSR-DW9174-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station DW9174

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