Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
KM4DDJ
Latitude
36.04000 N
Longitude
83.54000 W
Elevation
1,308 ft
Rank
842of 1,019 in Tennessee, Oct 16
Observed
4:05 AMCDT, 29 minutes ago
Air temperature
69F
Relative humidity
90%
Pressure
30.07inHg
Wind
0mph
Gust
1mph
Wind direction
0°
Precipitation this hour
0in
Precipitation today
0in

Ranking Statistics

On the radar over Citizen station KM4DDJReflectivityStorm 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. 1,575 instruments in Tennessee stand at one.

Station charts

Citizen station KM4DDJ Report

Rank 842 of 1,019 in Tennessee, 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 score81.5of 100

Tennessee median
97.0the median score of 1,019 stations
Scoring higher
840stations in Tennessee
Sharing its score
2ranks 841 to 842
Points deducted
18.514.2 reports received, 2.2 accuracy, 1.9 continuity, 0.2 forecast check
Counted at the median
Forecast checknot measured at this station; Tennessee median 98.3
Next above
EW7691rank 841; ahead on reports received 60.1% against 59.5%
Next below
W4EMZrank 843; behind on 247 score 81.5 against 81.4

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 3559.520.8 of 35 pointsTennessee median 98.8300 of 504 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsTennessee median 100.0half its reports arrived within 19 s
  3. Continuityweight 1080.98.1 of 10 pointsTennessee median 100.0longest silence 1.8 h, on a schedule of one report every 20 min
  4. Accuracyweight 2089.017.8 of 20 pointsTennessee median 100.0its temperature against the airport station KGKT, 12.7 miles away, over 399 readings: typical difference 3.5 °F beyond a steady offset of -0.6 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsTennessee median 100.00 of 399 readings failed their check against its reference station
  6. Forecast checkweight 10-9.8 of 10 points, at the medianTennessee median 98.3-

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 (60 min), none for 72 (24 h)
Accuracy
Full marks within 2.8 °F of its reference, typically, none beyond 9.3 °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
842of 1,019 in Tennessee, Oct 16
Time to reach Storm Station
19 s9 in 10 within 30 s
Against its reference, 30 days
-0.6 °Fcooler than the airport station KGKT, 13 miles away, on average over 625 readings; typical difference 3.3 °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: 300 of 504 scheduled reports received, 59.5%.

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 1,019 ranked stations in Tennessee 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, 1; 10 to 19 per cent, 8; 20 to 29 per cent, 22; 30 to 39 per cent, 6; 40 to 49 per cent, 75; 50 to 59 per cent, 115; 60 to 69 per cent, 18; 70 to 79 per cent, 76; 80 to 89 per cent, 96; 90 to 99 per cent, 247; 100 per cent, 355. Citizen station KM4DDJ received 59.5 per cent, 300 of 504 scheduled reports, rank 842 of 1,019.WHERE IT RANKS IN TENNESSEE, Oct 16THIS ONE: 59.5%, 300 OF 504, RANK 842 OF 1,019PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 19820 to 292230 to 39640 to 497550 to 5911560 to 691870 to 797680 to 899690 to 99247100355STATIONS, LOG SCALE
Chart of Citizen station KM4DDJ's rank in Tennessee by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 819 of 970; 2026-10-06 rank 827 of 982; 2026-10-07 rank 850 of 1,021; 2026-10-08 rank 806 of 1,020; 2026-10-09 rank 791 of 1,001; 2026-10-10 rank 792 of 1,001; 2026-10-11 rank 904 of 1,003; 2026-10-12 rank 883 of 1,007; 2026-10-13 rank 860 of 1,014; 2026-10-14 rank 856 of 1,012; 2026-10-15 rank 847 of 1,012; 2026-10-16 rank 842 of 1,019.ITS RANK IN TENNESSEE, DAY BY DAYRANK, FIRST AT THE TOP12505007501,000Oct 5Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%355
90 to 99%247
80 to 89%96
70 to 79%76
60 to 69%18
50 to 59%115
40 to 49%75
30 to 39%6
20 to 29%22
10 to 19%8
0 to 9%1
DayRankStations rankedShare received
Oct 16, 20268421,01959.5%
Oct 15, 20268471,01257.3%
Oct 14, 20268561,01258.7%
Oct 13, 20268601,01458.5%
Oct 12, 20268831,00755.9%
Oct 11, 20269041,00353.9%
Oct 10, 20267921,00159.0%
Oct 9, 20267911,00158.8%
Oct 8, 20268061,02059.0%
Oct 7, 20268501,02154.8%
Oct 6, 202682798255.6%
Oct 5, 202681997057.6%

Station report

Citizen station KM4DDJ, 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 KM4DDJ, 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 KM4DDJFIG. C THE WIND AT CITIZEN STATION KM4DDJPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR1GUST, 1 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECitizen station KM4DDJ, the windSTATION REPORT · CWOP KM4DDJTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-KM4DDJ-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 1,308 ft above sea level, 5 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.53 inHg and the temperature at 54.3 F; the station's altimeter setting of 30.07 inHg means its barometer reads 28.68 inHg; it reports 69.0 F, 14.7 F warmer than standard.

Section from sea level of where Citizen station KM4DDJ stands in the atmosphere, height to scale: the station 1,308 feet above sea level with 5 per cent of the air below it; the standard atmosphere's pressure there, 28.53 inches of mercury, and temperature, 54.3 degrees Fahrenheit; the altimeter setting of 30.07 and the station pressure it means, 28.68.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KM4DDJFIG. D WHERE CITIZEN STATION KM4DDJ 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 KM4DDJ5 PER CENT OF THE AIR BELOW IT1,308 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 HERE28.53 inHgSTANDARD TEMPERATURE HERE54.3 FALTIMETER SETTING, REPORTED30.07 inHgITS BAROMETER READS28.68 inHgTEMPERATURE, REPORTED69.0 FTITLECitizen station KM4DDJ, the columnSTATION REPORT · CWOP KM4DDJTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-KM4DDJ-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 45 degrees above the horizon at 36.04 N, and the day is 11 h 07 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 KM4DDJ, angles true: on Oct 16 it stands 45 degrees above the horizon, against 77 at the June solstice, 54 at the equinoxes and 31 at the December solstice; the day is 11 h 07 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KM4DDJFIG. E THE SUN AT CITIZEN STATION KM4DDJELEVATION 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 77°EQUINOXES 54°DECEMBER SOLSTICE 31°OCT 16, 45°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 07 MINLEVEL GROUND TAKES 71 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 36.04 N; THE SUN'S DECLINATION -9.1°TITLECitizen station KM4DDJ, the sunSTATION REPORT · CWOP KM4DDJTYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-KM4DDJ-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 1,308 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station KM4DDJ, each sensor drawn and labelled with what it read: air temperature, 69.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT KM4DDJFIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE69.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station KM4DDJ, the instrumentSTATION REPORT · CWOP KM4DDJTYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-16IDSR-KM4DDJ-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station KM4DDJ

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