Storm Station

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
EW4392
Latitude
37.33000 N
Longitude
79.89000 W
Elevation
1,260 ft
Rank
1,389of 1,520 in Virginia, Oct 11

Ranking Statistics

On the radar over Citizen station EW4392ReflectivityStorm 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 EW4392 Report

Rank 1,389 of 1,520 in Virginia, Oct 11. 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 score75.2of 100

Virginia median
94.7the median score of 1,520 stations
Scoring higher
1,387stations in Virginia
Sharing its score
2ranks 1,388 to 1,389
Points deducted
24.823.1 reports received, 1.3 continuity, 0.4 forecast check
Counted at the median
Forecast checknot measured at this station; Virginia median 96.2
Next above
EW0734rank 1,388; ahead on reports received 49.4% against 33.9%
Next below
VA-GC-16rank 1,390; behind on 247 score 75.2 against 75.1

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 3533.911.9 of 35 pointsVirginia median 96.737 of 109 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsVirginia median 92.7half its reports arrived within 14 s
  3. Continuityweight 1087.28.7 of 10 pointsVirginia median 100.0longest silence 6.8 h, on a schedule of one report every 1.5 h
  4. Accuracyweight 20100.020.0 of 20 pointsVirginia median 99.8its temperature against the airport station KROA, 4.7 miles away, over 31 readings: typical difference 1.9 °F beyond a steady offset of +0.2 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsVirginia median 100.00 of 31 readings failed their check against its reference station
  6. Forecast checkweight 10-9.6 of 10 points, at the medianVirginia median 96.2-

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 1.5 h
Continuity
Full marks for a longest silence of 3 reports or less (4.5 h), none for 72 (108 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
Rank
1,389of 1,520 in Virginia, Oct 11
Time to reach Storm Station
15 s9 in 10 within 30 s
Against its reference, 30 days
+0.2 °Fwarmer than the airport station KROA, 4.7 miles away, on average over 32 readings; typical difference 1.9 °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: 37 of 109 scheduled reports received, 33.9%.

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 1,520 ranked stations in Virginia on Oct 11 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, 50; 20 to 29 per cent, 22; 30 to 39 per cent, 26; 40 to 49 per cent, 72; 50 to 59 per cent, 211; 60 to 69 per cent, 24; 70 to 79 per cent, 117; 80 to 89 per cent, 143; 90 to 99 per cent, 597; 100 per cent, 253. Citizen station EW4392 received 33.9 per cent, 37 of 109 scheduled reports, rank 1,389 of 1,520.WHERE IT RANKS IN VIRGINIA, Oct 11THIS ONE: 33.9%, 37 OF 109, RANK 1,389 OF 1,520PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9510 to 195020 to 292230 to 392640 to 497250 to 5921160 to 692470 to 7911780 to 8914390 to 99597100253STATIONS, LOG SCALE
Chart of Citizen station EW4392's rank in Virginia by how it reported, day by day, from 2026-10-08 to 2026-10-11: 2026-10-08 rank 1,406 of 1,534; 2026-10-09 rank 1,430 of 1,529; 2026-10-10 rank 1,430 of 1,530; 2026-10-11 rank 1,389 of 1,520.ITS RANK IN VIRGINIA, DAY BY DAYRANK, FIRST AT THE TOP15001,0001,500Oct 8Oct 9Oct 10Oct 11
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%253
90 to 99%597
80 to 89%143
70 to 79%117
60 to 69%24
50 to 59%211
40 to 49%72
30 to 39%26
20 to 29%22
10 to 19%50
0 to 9%5
DayRankStations rankedShare received
Oct 11, 20261,3891,52033.9%
Oct 10, 20261,4301,53029.3%
Oct 9, 20261,4301,52929.3%
Oct 8, 20261,4061,53421.7%

Station report

Citizen station EW4392, in 3 sheets

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

1The column

Contents

At 1,260 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.58 inHg and the temperature at 54.5 F.

Section from sea level of where Citizen station EW4392 stands in the atmosphere, height to scale: the station 1,260 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.58 inches of mercury, and temperature, 54.5 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW4392FIG. D WHERE CITIZEN STATION EW4392 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 EW43924 PER CENT OF THE AIR BELOW IT1,260 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 HERE28.58 inHgSTANDARD TEMPERATURE HERE54.5 FTITLECitizen station EW4392, the columnSTATION REPORT · CWOP EW4392TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-11IDSR-EW4392-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 11 the noon sun stands 45 degrees above the horizon at 37.33 N, and the day is 11 h 16 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 EW4392, angles true: on Oct 11 it stands 45 degrees above the horizon, against 76 at the June solstice, 53 at the equinoxes and 29 at the December solstice; the day is 11 h 16 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW4392FIG. E THE SUN AT CITIZEN STATION EW4392ELEVATION 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 76°EQUINOXES 53°DECEMBER SOLSTICE 29°OCT 11, 45°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 16 MINLEVEL GROUND TAKES 71 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.33 N; THE SUN'S DECLINATION -7.2°TITLECitizen station EW4392, the sunSTATION REPORT · CWOP EW4392TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-11IDSR-EW4392-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 1,260 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station EW4392, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW4392FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station EW4392, the instrumentSTATION REPORT · CWOP EW4392TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-11IDSR-EW4392-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

What this instrument measures for

1 place reads it as one of the nearest to it.

Near Citizen station EW4392

Gauges

Weather instruments

Places