Weather/Illinois/Instruments/NDBC-CMTI2
At a tide gauge
DCP network, identified by the register
Now, today, and the week
On the radar over Calumet HarborReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Drawn as the kind of place it stands at. It is the only instrument in Illinois that stands at one.
-in
Snow on the ground
Station charts
Rank 1,341 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.
247 score69.5of 100
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.
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
From Storm Station's own record of every report it heard from this station.
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.
Its schedule is one report every 18 min, 80 in 24 hours. Two reports in the same 18 min count as one received.
| Share of scheduled reports received | Stations |
|---|---|
| 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 |
| Day | Rank | Stations ranked | Share received |
|---|---|---|---|
| Oct 16, 2026 | 1,341 | 1,393 | 60.3% |
| Oct 15, 2026 | 1,336 | 1,375 | 50.1% |
| Oct 14, 2026 | 1,316 | 1,356 | 43.9% |
| Oct 13, 2026 | 1,325 | 1,360 | 33.7% |
| Oct 12, 2026 | 1,348 | 1,354 | 23.3% |
| Oct 11, 2026 | 1,353 | 1,359 | 11.7% |
Station report
Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
On Oct 16 the noon sun stands 39 degrees above the horizon at 41.73 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.
FB-ENG-007, Fig. ARadiation budgetWhere the sunlight that reaches this ground goes once it arrives.
A data collection platform. Its sensors, as its network builds them.
FB-INS-001, Fig. AWhat an instrument isA surface station taken apart: what each of these sensors is.