Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
EW3173
Latitude
39.98000 N
Longitude
105.13000 W
Elevation
5,365 ft
Rank
2,451of 2,688 in Colorado, Oct 17
Observed
5:08 PMMDT, 1 hour ago
Air temperature
57F
Relative humidity
27%
Pressure
31.11inHg
Wind
0mph
Gust
0mph
Wind direction
163°
Precipitation this hour
0in
Precipitation today
0in

Ranking Statistics

On the radar over Citizen station EW3173ReflectivityStorm 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. 3,978 instruments in Colorado stand at one.

Station charts

Citizen station EW3173 Report

Rank 2,451 of 2,688 in Colorado, Oct 17. 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 score76.9of 100

Colorado median
93.8the median score of 2,688 stations
Scoring higher
2,449stations in Colorado
Sharing its score
3ranks 2,450 to 2,452
Points deducted
23.115.5 reports received, 3.1 continuity, 3.1 accuracy, 1.4 forecast check
Counted at the median
Forecast checknot measured at this station; Colorado median 86.3
Next above
CO130rank 2,450; ahead on reports received 62.5% against 55.5%
Next below
CW6531rank 2,452; behind on reports received 55.5% against 53.8%

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 3555.619.5 of 35 pointsColorado median 98.8140 of 252 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsColorado median 90.1half its reports arrived within 13 s
  3. Continuityweight 1068.66.9 of 10 pointsColorado median 100.0longest silence 5.4 h, on a schedule of one report every 40 min
  4. Accuracyweight 2084.516.9 of 20 pointsColorado median 95.6its temperature against the airport station KEIK, 4.8 miles away, over 186 readings: typical difference 3.0 °F beyond a steady offset of +0.1 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsColorado median 100.00 of 186 readings failed their check against its reference station
  6. Forecast checkweight 10-8.6 of 10 points, at the medianColorado median 86.3-

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 (2 h), none for 72 (48 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
2,451of 2,688 in Colorado, Oct 17
Time to reach Storm Station
13 s9 in 10 within 29 s
Against its reference, 30 days
+0.9 °Fwarmer than the airport station KEIK, 4.8 miles away, on average over 289 readings; typical difference 3.6 °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: 140 of 252 scheduled reports received, 55.5%.

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 2,688 ranked stations in Colorado on Oct 17 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, 1; 10 to 19 per cent, 35; 20 to 29 per cent, 10; 30 to 39 per cent, 12; 40 to 49 per cent, 150; 50 to 59 per cent, 225; 60 to 69 per cent, 169; 70 to 79 per cent, 171; 80 to 89 per cent, 229; 90 to 99 per cent, 830; 100 per cent, 856. Citizen station EW3173 received 55.5 per cent, 140 of 252 scheduled reports, rank 2,451 of 2,688.WHERE IT RANKS IN COLORADO, Oct 17THIS ONE: 55.5%, 140 OF 252, RANK 2,451 OF 2,688PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 193520 to 291030 to 391240 to 4915050 to 5922560 to 6916970 to 7917180 to 8922990 to 99830100856STATIONS, LOG SCALE
Chart of Citizen station EW3173's rank in Colorado by how it reported, day by day, from 2026-10-05 to 2026-10-17: 2026-10-05 rank 2,157 of 2,564; 2026-10-06 rank 2,372 of 2,610; 2026-10-07 rank 2,391 of 2,582; 2026-10-08 rank 2,298 of 2,564; 2026-10-09 rank 2,330 of 2,531; 2026-10-10 rank 2,330 of 2,531; 2026-10-11 rank 2,330 of 2,540; 2026-10-12 rank 2,267 of 2,551; 2026-10-13 rank 2,347 of 2,546; 2026-10-14 rank 2,371 of 2,553; 2026-10-15 rank 2,428 of 2,597; 2026-10-16 rank 2,438 of 2,650; 2026-10-17 rank 2,451 of 2,688.ITS RANK IN COLORADO, DAY BY DAYRANK, FIRST AT THE TOP11,0002,0003,000Oct 5Oct 8Oct 11Oct 14Oct 17
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%856
90 to 99%830
80 to 89%229
70 to 79%171
60 to 69%169
50 to 59%225
40 to 49%150
30 to 39%12
20 to 29%10
10 to 19%35
0 to 9%1
DayRankStations rankedShare received
Oct 17, 20262,4512,68855.5%
Oct 16, 20262,4382,65055.9%
Oct 15, 20262,4282,59752.3%
Oct 14, 20262,3712,55353.1%
Oct 13, 20262,3472,54654.0%
Oct 12, 20262,2672,55155.7%
Oct 11, 20262,3302,54051.5%
Oct 10, 20262,3302,53146.7%
Oct 9, 20262,3302,53146.3%
Oct 8, 20262,2982,56450.9%
Oct 7, 20262,3912,58244.1%
Oct 6, 20262,3722,61040.9%
Oct 5, 20262,1572,56452.6%

Station report

Citizen station EW3173, 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 EW3173, 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 EW3173FIG. C THE WIND AT CITIZEN STATION EW3173PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station EW3173, the windSTATION REPORT · CWOP EW3173TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-EW3173-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 5,365 ft above sea level, 18 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 24.56 inHg and the temperature at 39.9 F; the station's altimeter setting of 31.11 inHg means its barometer reads 25.53 inHg; it reports 57.0 F, 17.1 F warmer than standard.

Section from sea level of where Citizen station EW3173 stands in the atmosphere, height to scale: the station 5,365 feet above sea level with 18 per cent of the air below it; the standard atmosphere's pressure there, 24.56 inches of mercury, and temperature, 39.9 degrees Fahrenheit; the altimeter setting of 31.11 and the station pressure it means, 25.53.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3173FIG. D WHERE CITIZEN STATION EW3173 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 EW317318 PER CENT OF THE AIR BELOW IT5,365 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 HERE24.56 inHgSTANDARD TEMPERATURE HERE39.9 FALTIMETER SETTING, REPORTED31.11 inHgITS BAROMETER READS25.53 inHgTEMPERATURE, REPORTED57.0 FTITLECitizen station EW3173, the columnSTATION REPORT · CWOP EW3173TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-EW3173-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

3The sun

Contents

On Oct 16 the noon sun stands 41 degrees above the horizon at 39.98 N, and the day is 10 h 58 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 EW3173, angles true: on Oct 16 it stands 41 degrees above the horizon, against 73 at the June solstice, 50 at the equinoxes and 27 at the December solstice; the day is 10 h 58 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3173FIG. E THE SUN AT CITIZEN STATION EW3173ELEVATION 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 73°EQUINOXES 50°DECEMBER SOLSTICE 27°OCT 16, 41°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 58 MINLEVEL GROUND TAKES 66 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.98 N; THE SUN'S DECLINATION -9.1°TITLECitizen station EW3173, the sunSTATION REPORT · CWOP EW3173TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-EW3173-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 5,365 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station EW3173, each sensor drawn and labelled with what it read: air temperature, 57.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT EW3173FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE57.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station EW3173, the instrumentSTATION REPORT · CWOP EW3173TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-16IDSR-EW3173-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

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