Drawn as the kind of place it stands at. 137 instruments in Illinois stand at one.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Des Plaines River Near Gurnee Report
Rank 979 of 1,359 in Illinois, Oct 11. 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.
IL-PT-6rank 986; behind on reports received 72.0% against 71.4%
Sharing its rank
6other stations, equal on every measure
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.
Reports receivedweight 3572.025.2 of 35 pointsIllinois median 96.1121 of 168 scheduled reports received in 7 days
Arrivalweight 1074.47.4 of 10 pointsIllinois median 94.4half its reports arrived within 23 min
Continuityweight 10100.010.0 of 10 pointsIllinois median 100.0longest silence 60 min, on a schedule of one report every 60 min
Accuracyweight 20-19.6 of 20 points, at the medianIllinois median 97.8-
Instrument checksweight 15-15.0 of 15 points, at the medianIllinois median 100.0-
Forecast checkweight 10-9.7 of 10 points, at the medianIllinois median 97.0-
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 (3 h), none for 72 (72 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °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
At 650 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.23 inHg and the temperature at 56.7 F.
On Oct 11 the noon sun stands 40 degrees above the horizon at 42.34 N, and the day is 11 h 07 min long. Level ground there takes 65 per cent of the noon sunlight a surface facing the sun would.