Drawn as the kind of place it stands at. 29 instruments in Puerto Rico stand at one.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Arecibo Observatory Report
Rank 3 of 243 in Puerto Rico, 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 score100.0of 100
Puerto Rico median
97.5the median score of 243 stations
Scoring higher
0stations in Puerto Rico
Sharing its score
25ranks 1 to 25
Points deducted
0.0of 100
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Puerto Rico median 100.0, 100.0, 100.0
Next above
GCAP4rank 1; ahead on reports due 112 against 4, the longer record first
Next below
LTBP4rank 4; behind on median arrival 10 min 59 s against 20 min 52 s
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 35100.035.0 of 35 pointsPuerto Rico median 99.14 of 4 scheduled reports received in 7 days
Arrivalweight 10100.010.0 of 10 pointsPuerto Rico median 84.7half its reports arrived within 11 min
Continuityweight 10100.010.0 of 10 pointsPuerto Rico median 100.0longest silence 24 h, on a schedule of one report every 24 h
Accuracyweight 20-20.0 of 20 points, at the medianPuerto Rico median 100.0-
Instrument checksweight 15-15.0 of 15 points, at the medianPuerto Rico median 100.0-
Forecast checkweight 10-10.0 of 10 points, at the medianPuerto Rico 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 2.4 h, none at 24 h
Continuity
Full marks for a longest silence of 3 reports or less (72 h), none for 72 (1728 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
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: 4 of 4 scheduled reports received, 100%.
The ranking these charts were drawn from, as tables
Share of scheduled reports received
Stations
100%
100
90 to 99%
115
80 to 89%
3
70 to 79%
14
60 to 69%
0
50 to 59%
10
40 to 49%
0
30 to 39%
0
20 to 29%
1
10 to 19%
0
0 to 9%
0
Day
Rank
Stations ranked
Share received
Oct 16, 2026
3
243
100.0%
Oct 15, 2026
3
236
100.0%
Oct 14, 2026
3
233
100.0%
The readings these charts were drawn from, as a table
Hour
Temperature F
Reports
Mon 12, 6 AM
76.0
1
Sun 11, 6 AM
76.0
1
Station report
Arecibo Observatory, in 3 sheets
Drawn from its report of Oct 16, 2026, 6:00 AM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.
At 1,062 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.79 inHg and the temperature at 55.2 F; it reports 72.0 F, 16.8 F warmer than standard.
On Oct 16 the noon sun stands 63 degrees above the horizon at 18.35 N, and the day is 11 h 36 min long. Level ground there takes 89 per cent of the noon sunlight a surface facing the sun would.
FB-ENG-001, Fig. AAtmosphere in section
FB-ENG-003, Fig. CHydrostatic balance
