Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
DW5640
Latitude
41.86000 N
Longitude
89.52000 W
Elevation
799 ft
Rank
1,346of 1,393 in Illinois, Oct 16

Ranking Statistics

On the radar over Citizen station DW5640ReflectivityStorm 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. 1,777 instruments in Illinois stand at one.

Station charts

Citizen station DW5640 Report

Rank 1,346 of 1,393 in Illinois, 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 score68.4of 100

Illinois median
95.9the median score of 1,393 stations
Scoring higher
1,345stations in Illinois
Sharing its score
1no other station
Points deducted
31.621.0 reports received, 10.0 continuity, 0.5 forecast check
Counted at the median
Forecast checknot measured at this station; Illinois median 94.7
Next above
DW4895rank 1,345; ahead on 247 score 69.0 against 68.4
Next below
413516087442101rank 1,347; behind on 247 score 68.4 against 68.0

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 3539.914.0 of 35 pointsIllinois median 99.1201 of 504 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsIllinois median 96.3half its reports arrived within 20 s
  3. Continuityweight 100.00.0 of 10 pointsIllinois median 100.0longest silence 2.3 days, on a schedule of one report every 20 min
  4. Accuracyweight 20100.020.0 of 20 pointsIllinois median 100.0its temperature against the airport station KSQI, 11.0 miles away, over 46 readings: typical difference 2.6 °F beyond a steady offset of -1.4 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsIllinois median 100.00 of 46 readings failed their check against its reference station
  6. Forecast checkweight 10-9.5 of 10 points, at the medianIllinois median 94.7-

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 2.6 °F of its reference, typically, none beyond 9.1 °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
1,346of 1,393 in Illinois, Oct 16
Time to reach Storm Station
21 s9 in 10 within 31 s
Against its reference, 30 days
-1.3 °Fcooler than the airport station KSQI, 11 miles away, on average over 106 readings; typical difference 2.7 °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: 201 of 504 scheduled reports received, 39.8%.

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 1,393 ranked stations in Illinois 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, 2; 10 to 19 per cent, 8; 20 to 29 per cent, 28; 30 to 39 per cent, 5; 40 to 49 per cent, 83; 50 to 59 per cent, 144; 60 to 69 per cent, 25; 70 to 79 per cent, 91; 80 to 89 per cent, 143; 90 to 99 per cent, 339; 100 per cent, 525. Citizen station DW5640 received 39.8 per cent, 201 of 504 scheduled reports, rank 1,346 of 1,393.WHERE IT RANKS IN ILLINOIS, Oct 16THIS ONE: 39.8%, 201 OF 504, RANK 1,346 OF 1,393PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9210 to 19820 to 292830 to 39540 to 498350 to 5914460 to 692570 to 799180 to 8914390 to 99339100525STATIONS, LOG SCALE
Chart of Citizen station DW5640's rank in Illinois by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 1,076 of 1,318; 2026-10-06 rank 1,093 of 1,354; 2026-10-07 rank 1,122 of 1,449; 2026-10-08 rank 1,110 of 1,399; 2026-10-09 rank 1,093 of 1,364; 2026-10-10 rank 1,091 of 1,364; 2026-10-11 rank 1,104 of 1,359; 2026-10-12 rank 1,095 of 1,354; 2026-10-13 rank 1,098 of 1,360; 2026-10-14 rank 1,231 of 1,356; 2026-10-15 rank 1,325 of 1,375; 2026-10-16 rank 1,346 of 1,393.ITS RANK IN ILLINOIS, DAY BY DAYRANK, FIRST AT THE TOP15001,0001,500Oct 5Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%525
90 to 99%339
80 to 89%143
70 to 79%91
60 to 69%25
50 to 59%144
40 to 49%83
30 to 39%5
20 to 29%28
10 to 19%8
0 to 9%2
DayRankStations rankedShare received
Oct 16, 20261,3461,39339.8%
Oct 15, 20261,3251,37548.4%
Oct 14, 20261,2311,35656.3%
Oct 13, 20261,0981,36057.9%
Oct 12, 20261,0951,35456.5%
Oct 11, 20261,1041,35955.7%
Oct 10, 20261,0911,36454.0%
Oct 9, 20261,0931,36454.0%
Oct 8, 20261,1101,39952.7%
Oct 7, 20261,1221,44951.2%
Oct 6, 20261,0931,35450.7%
Oct 5, 20261,0761,31854.0%

Station report

Citizen station DW5640, 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 799 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.07 inHg and the temperature at 56.2 F.

Section from sea level of where Citizen station DW5640 stands in the atmosphere, height to scale: the station 799 feet above sea level with 3 per cent of the air below it; the standard atmosphere's pressure there, 29.07 inches of mercury, and temperature, 56.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW5640FIG. D WHERE CITIZEN STATION DW5640 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 DW56403 PER CENT OF THE AIR BELOW IT799 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 HERE29.07 inHgSTANDARD TEMPERATURE HERE56.2 FTITLECitizen station DW5640, the columnSTATION REPORT · CWOP DW5640TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-DW5640-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 39 degrees above the horizon at 41.86 N, and the day is 10 h 54 min long. Level ground there takes 63 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station DW5640, angles true: on Oct 16 it stands 39 degrees above the horizon, against 72 at the June solstice, 48 at the equinoxes and 25 at the December solstice; the day is 10 h 54 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW5640FIG. E THE SUN AT CITIZEN STATION DW5640ELEVATION 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 72°EQUINOXES 48°DECEMBER SOLSTICE 25°OCT 16, 39°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 54 MINLEVEL GROUND TAKES 63 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 41.86 N; THE SUN'S DECLINATION -9.1°TITLECitizen station DW5640, the sunSTATION REPORT · CWOP DW5640TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-DW5640-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 799 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station DW5640, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW5640FIG. 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 DW5640, the instrumentSTATION REPORT · CWOP DW5640TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-DW5640-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station DW5640

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