Drawn as the kind of place it stands at. 38 instruments in Arizona stand at one.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Yuma Valley ETo Report
Rank 1,589 of 1,656 in Arizona, 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.
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 3529.810.4 of 35 pointsArizona median 72.050 of 168 scheduled reports received in 7 days
Arrivalweight 1054.45.4 of 10 pointsArizona median 79.2half its reports arrived within 33 min
Continuityweight 10100.010.0 of 10 pointsArizona median 100.0longest silence 61 min, on a schedule of one report every 60 min
Accuracyweight 2090.418.1 of 20 pointsArizona median 91.2its temperature against the airport station KNYL, 6.4 miles away, over 40 readings: typical difference 2.8 °F beyond a steady offset of -2.2 °F
Instrument checksweight 15100.015.0 of 15 pointsArizona median 100.00 of 40 readings failed their check against its reference station
Forecast checkweight 10-10.0 of 10 points, at the medianArizona median 100.0-
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 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
-2.0 °Fcooler than the airport station KNYL, 6.4 miles away, on average over 51 readings; typical difference 3.5 °F
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 hour, 24 in 24 hours. Two reports in the same hour count as one received.
The ranking these charts were drawn from, as tables
Share of scheduled reports received
Stations
100%
375
90 to 99%
340
80 to 89%
98
70 to 79%
125
60 to 69%
14
50 to 59%
127
40 to 49%
445
30 to 39%
10
20 to 29%
93
10 to 19%
28
0 to 9%
1
Day
Rank
Stations ranked
Share received
Oct 11, 2026
1,589
1,656
29.7%
Oct 10, 2026
1,582
1,661
15.4%
Oct 9, 2026
1,582
1,661
14.8%
Station report
Yuma Valley ETo, 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.
At 118 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.79 inHg and the temperature at 58.6 F.
On Oct 11 the noon sun stands 50 degrees above the horizon at 32.71 N, and the day is 11 h 22 min long. Level ground there takes 77 per cent of the noon sunlight a surface facing the sun would.