Storm Station

Beside a road

RWIS network, identified by the register

Identifier
SS1843
Latitude
42.32200 N
Longitude
89.63190 W
Elevation
-
Rank
1,128of 1,162 in Illinois, Oct 4
Air temperature
59F
Dew point
52F
Relative humidity
77%
Pavement temperature
55F

On the radar over US-20 FreeportReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Beside a road

Drawn as the kind of place it stands at. 37 instruments in Illinois stand at one.

Station charts

US-20 Freeport Report

Rank 1,128 of 1,162 in Illinois, Oct 4. 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 score63.0of 100

  1. Reports receivedweight 3512.282 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1050.2half its reports arrived within 35 min
  3. Continuityweight 1095.5longest silence 52 min, on a schedule of one report every 15 min
  4. Accuracyweight 20100.0its temperature against the airport station KFEP, 5.8 miles away, over 82 readings: typical difference 1.9 °F beyond a steady offset of +0.1 °F
  5. Instrument checksweight 15100.00 of 82 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
1,128of 1,162 in Illinois, Oct 4
Days reported, 30 days
0 of 30
Time to reach Storm Station
35 min9 in 10 within 39 min
Against its reference, 30 days
+0.1 °Fwarmer than the airport station KFEP, 5.8 miles away, on average over 142 readings; typical difference 2.2 °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: 82 of 672 scheduled reports received, 12.2%.

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 1,162 ranked stations in Illinois on Oct 4 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, 32; 20 to 29 per cent, 2; 30 to 39 per cent, 25; 40 to 49 per cent, 12; 50 to 59 per cent, 12; 60 to 69 per cent, 200; 70 to 79 per cent, 22; 80 to 89 per cent, 33; 90 to 99 per cent, 318; 100 per cent, 505. US-20 Freeport received 12.2 per cent, 82 of 672 scheduled reports, rank 1,128 of 1,162.WHERE IT RANKS IN ILLINOIS, Oct 4THIS ONE: 12.2%, 82 OF 672, RANK 1,128 OF 1,162PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 193220 to 29230 to 392540 to 491250 to 591260 to 6920070 to 792280 to 893390 to 99318100505STATIONS, LOG SCALE
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%505
90 to 99%318
80 to 89%33
70 to 79%22
60 to 69%200
50 to 59%12
40 to 49%12
30 to 39%25
20 to 29%2
10 to 19%32
0 to 9%1

Station report

US-20 Freeport, in 2 sheets

Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The sun

Contents

On Oct 4 the noon sun stands 43 degrees above the horizon at 42.32 N, and the day is 11 h 27 min long. Level ground there takes 68 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at US-20 Freeport, angles true: on Oct 4 it stands 43 degrees above the horizon, against 71 at the June solstice, 48 at the equinoxes and 24 at the December solstice; the day is 11 h 27 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SS1843FIG. E THE SUN AT US-20 FREEPORTELEVATION 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 71°EQUINOXES 48°DECEMBER SOLSTICE 24°OCT 4, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 27 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 42.32 N; THE SUN'S DECLINATION -4.6°TITLEUS-20 Freeport, the sunSTATION REPORT · RWIS SS1843TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-04IDSR-SS1843-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A road weather station. Its sensors, as its network builds them.

Elevation of a road weather station, US-20 Freeport, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SS1843FIG. F THE INSTRUMENTELEVATION OF A ROAD WEATHER STATION, EACH SENSOR WITH WHAT IT READTHE ROAD, IN SECTIONPAVEMENT SENSOR, SET IN THE ROAD-PROBE UNDER THE ROAD-AIR TEMPERATURE ON THE TOWER-WIND AT THE TOP OF THE TOWER-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEUS-20 Freeport, the instrumentSTATION REPORT · RWIS SS1843TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-04IDSR-SS1843-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001Stevenson screen and siting FB-INS-009

What it seesLapse rates and stability FB-ENG-005Water vapour as a gas FB-ENG-011Blizzard FB-EVT-081Ice storm FB-EVT-084Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Humidity variables FB-WAT-002Fog types FB-WAT-020

Near US-20 Freeport

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