Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
N4TRF-13
Latitude
35.60000 N
Longitude
88.27000 W
Elevation
440 ft
Rank
910of 1,019 in Tennessee, Oct 16
Observed
10:42 PMCDT, 56 minutes ago
Air temperature
71F
Relative humidity
80%
Pressure
30.03inHg
Wind
0mph
Gust
0mph
Wind direction
136°
Precipitation this hour
0in
Precipitation today
0in

Ranking Statistics

On the radar over Citizen station N4TRF-13ReflectivityStorm 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 N4TRF-13 Report

Rank 910 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 score78.7of 100

Tennessee median
97.0the median score of 1,019 stations
Scoring higher
909stations in Tennessee
Sharing its score
2ranks 910 to 911
Points deducted
21.316.3 reports received, 4.9 continuity, 0.2 forecast check
Counted at the median
Forecast checknot measured at this station; Tennessee median 98.3
Next above
TN-BF-3rank 909; ahead on 247 score 78.9 against 78.7
Next below
GW4002rank 911; behind on reports received 53.4% against 49.2%

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 3553.518.7 of 35 pointsTennessee median 98.8245 of 458 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsTennessee median 100.0half its reports arrived within 16 s
  3. Continuityweight 1051.35.1 of 10 pointsTennessee median 100.0longest silence 5.2 h, on a schedule of one report every 22 min
  4. Accuracyweight 20100.020.0 of 20 pointsTennessee median 100.0its temperature against the airport station KPVE, 6.0 miles away, over 328 readings: typical difference 2.0 °F beyond a steady offset of +0.7 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsTennessee median 100.00 of 328 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 (66 min), none for 72 (26.4 h)
Accuracy
Full marks within 2.1 °F of its reference, typically, none beyond 8.6 °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
910of 1,019 in Tennessee, Oct 16
Time to reach Storm Station
16 s9 in 10 within 29 s
Against its reference, 30 days
+1.0 °Fwarmer than the airport station KPVE, 6.0 miles away, on average over 527 readings; typical difference 2.4 °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: 245 of 458 scheduled reports received, 53.4%.

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 N4TRF-13 received 53.4 per cent, 245 of 458 scheduled reports, rank 910 of 1,019.WHERE IT RANKS IN TENNESSEE, Oct 16THIS ONE: 53.4%, 245 OF 458, RANK 910 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 N4TRF-13's rank in Tennessee by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 871 of 970; 2026-10-06 rank 914 of 982; 2026-10-07 rank 910 of 1,021; 2026-10-08 rank 864 of 1,020; 2026-10-09 rank 856 of 1,001; 2026-10-10 rank 857 of 1,001; 2026-10-11 rank 911 of 1,003; 2026-10-12 rank 919 of 1,007; 2026-10-13 rank 905 of 1,014; 2026-10-14 rank 858 of 1,012; 2026-10-15 rank 851 of 1,012; 2026-10-16 rank 910 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, 20269101,01953.4%
Oct 15, 20268511,01257.5%
Oct 14, 20268581,01258.0%
Oct 13, 20269051,01456.3%
Oct 12, 20269191,00753.5%
Oct 11, 20269111,00352.6%
Oct 10, 20268571,00156.7%
Oct 9, 20268561,00156.9%
Oct 8, 20268641,02053.6%
Oct 7, 20269101,02150.0%
Oct 6, 202691498243.9%
Oct 5, 202687197050.0%

Station report

Citizen station N4TRF-13, 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 N4TRF-13, 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 N4TRF-13FIG. C THE WIND AT CITIZEN STATION N4TRF-13PLAN, 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 N4TRF-13, the windSTATION REPORT · CWOP N4TRF-13TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-N4TRF13-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

From the Field Book

2The column

Contents

At 440 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.45 inHg and the temperature at 57.4 F; the station's altimeter setting of 30.03 inHg means its barometer reads 29.56 inHg; it reports 71.0 F, 13.6 F warmer than standard.

Section from sea level of where Citizen station N4TRF-13 stands in the atmosphere, height to scale: the station 440 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.45 inches of mercury, and temperature, 57.4 degrees Fahrenheit; the altimeter setting of 30.03 and the station pressure it means, 29.56.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT N4TRF-13FIG. D WHERE CITIZEN STATION N4TRF-13 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 N4TRF-132 PER CENT OF THE AIR BELOW IT440 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 HERE29.45 inHgSTANDARD TEMPERATURE HERE57.4 FALTIMETER SETTING, REPORTED30.03 inHgITS BAROMETER READS29.56 inHgTEMPERATURE, REPORTED71.0 FTITLECitizen station N4TRF-13, the columnSTATION REPORT · CWOP N4TRF-13TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-N4TRF13-2DRAWN 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 35.60 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 N4TRF-13, angles true: on Oct 16 it stands 45 degrees above the horizon, against 78 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 N4TRF-13FIG. E THE SUN AT CITIZEN STATION N4TRF-13ELEVATION 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 78°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 35.60 N; THE SUN'S DECLINATION -9.1°TITLECitizen station N4TRF-13, the sunSTATION REPORT · CWOP N4TRF-13TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-N4TRF13-3DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

4The instrument

Contents

A weather instrument, 440 ft above sea level. Its latest report is written on the sensors that made it.

Elevation of the instrument, Citizen station N4TRF-13, each sensor drawn and labelled with what it read: air temperature, 71.0 f; precipitation gauge, 0.00 in today.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT N4TRF-13FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE71.0 FPRECIPITATION GAUGE0.00 IN TODAYSCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station N4TRF-13, the instrumentSTATION REPORT · CWOP N4TRF-13TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 4 of 4DATE2026-10-16IDSR-N4TRF13-4DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station N4TRF-13

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