Storm Station

In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
KD9OPI
Latitude
39.79000 N
Longitude
85.95000 W
Elevation
856 ft
Rank
961of 1,033 in Indiana, Oct 6
Air temperature
44F
Relative humidity
95%
Pressure
30.24inHg
Wind
0mph
Gust
0mph
Wind direction
352°
Precipitation this hour
0in
Precipitation today
0in

On the radar over Citizen station KD9OPIReflectivityStorm 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. 1,809 instruments in Indiana stand at one.

Station charts

Citizen station KD9OPI Report

Rank 961 of 1,033 in Indiana, Oct 6. 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.

247 score77.5of 100

  1. Reports receivedweight 3546.662 of 133 scheduled reports received in 7 days
  2. Arrivalweight 10100.0half its reports arrived within 23 s
  3. Continuityweight 1078.2longest silence 2 h, on a schedule of one report every 20 min
  4. Accuracyweight 2092.0its temperature against the airport station KMQJ, 4.6 miles away, over 84 readings: typical difference 2.5 °F beyond a steady offset of +1.1 °F
  5. Instrument checksweight 15100.00 of 84 readings failed their check against its reference station
  6. Forecast checkweight 10--

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

Rank
961of 1,033 in Indiana, Oct 6
Time to reach Storm Station
22 s9 in 10 within 30 s
Against its reference, 30 days
+1.1 °Fwarmer than the airport station KMQJ, 4.6 miles away, on average over 94 readings; typical difference 2.6 °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: 62 of 133 scheduled reports received, 46.6%.

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 1,033 ranked stations in Indiana on Oct 6 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, 15; 20 to 29 per cent, 5; 30 to 39 per cent, 8; 40 to 49 per cent, 70; 50 to 59 per cent, 42; 60 to 69 per cent, 87; 70 to 79 per cent, 15; 80 to 89 per cent, 191; 90 to 99 per cent, 168; 100 per cent, 431. Citizen station KD9OPI received 46.6 per cent, 62 of 133 scheduled reports, rank 961 of 1,033.WHERE IT RANKS IN INDIANA, Oct 6THIS ONE: 46.6%, 62 OF 133, RANK 961 OF 1,033PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 191520 to 29530 to 39840 to 497050 to 594260 to 698770 to 791580 to 8919190 to 99168100431STATIONS, LOG SCALE
Chart of Citizen station KD9OPI's rank in Indiana by how it reported, day by day, from 2026-10-05 to 2026-10-06: 2026-10-05 rank 828 of 1,012; 2026-10-06 rank 961 of 1,033.ITS RANK IN INDIANA, DAY BY DAYRANK, FIRST AT THE TOP12505007501,000Oct 5Oct 6
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%431
90 to 99%168
80 to 89%191
70 to 79%15
60 to 69%87
50 to 59%42
40 to 49%70
30 to 39%8
20 to 29%5
10 to 19%15
0 to 9%1
DayRankStations rankedShare received
Oct 6, 20269611,03346.6%
Oct 5, 20268281,01262.8%

Station report

Citizen station KD9OPI, 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 KD9OPI, 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 KD9OPIFIG. C THE WIND AT CITIZEN STATION KD9OPIPLAN, 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 KD9OPI, the windSTATION REPORT · CWOP KD9OPITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-06IDSR-KD9OPI-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 856 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.01 inHg and the temperature at 55.9 F; the station's altimeter setting of 30.24 inHg means its barometer reads 29.32 inHg; it reports 44.0 F, 11.9 F colder than standard.

Section from sea level of where Citizen station KD9OPI stands in the atmosphere, height to scale: the station 856 feet above sea level with 3 per cent of the air below it; the standard atmosphere's pressure there, 29.01 inches of mercury, and temperature, 55.9 degrees Fahrenheit; the altimeter setting of 30.24 and the station pressure it means, 29.32.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD9OPIFIG. D WHERE CITIZEN STATION KD9OPI 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 KD9OPI3 PER CENT OF THE AIR BELOW IT856 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 HERE29.01 inHgSTANDARD TEMPERATURE HERE55.9 FALTIMETER SETTING, REPORTED30.24 inHgITS BAROMETER READS29.32 inHgTEMPERATURE, REPORTED44.0 FTITLECitizen station KD9OPI, the columnSTATION REPORT · CWOP KD9OPITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-06IDSR-KD9OPI-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

3The sun

Contents

On Oct 6 the noon sun stands 45 degrees above the horizon at 39.79 N, and the day is 11 h 24 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 KD9OPI, angles true: on Oct 6 it stands 45 degrees above the horizon, against 74 at the June solstice, 50 at the equinoxes and 27 at the December solstice; the day is 11 h 24 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD9OPIFIG. E THE SUN AT CITIZEN STATION KD9OPIELEVATION 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 50°DECEMBER SOLSTICE 27°OCT 6, 45°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 24 MINLEVEL GROUND TAKES 71 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.79 N; THE SUN'S DECLINATION -5.3°TITLECitizen station KD9OPI, the sunSTATION REPORT · CWOP KD9OPITYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-06IDSR-KD9OPI-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 856 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station KD9OPI, each sensor drawn and labelled with what it read: air temperature, 44.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KD9OPIFIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE44.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station KD9OPI, the instrumentSTATION REPORT · CWOP KD9OPITYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-06IDSR-KD9OPI-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station KD9OPI

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