Storm Station
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At a river or reservoir gauge

DCP network, identified by the register

Identifier
WNDC1
Latitude
37.35800 N
Longitude
122.23990 W
Elevation
-
Listed
Automatically, on 781 reports in 169 hours over the last seven days
Observed
6:01 AMPDT, 42 minutes ago

Ranking Statistics

At a river or reservoir gauge

Drawn as the kind of place it stands at. 432 instruments in California stand at one.

Station charts

Portola Valley - Windy Hill Report

Rank 2,558 of 4,465 in California, 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 score89.3of 100

California median
91.6the median score of 4,465 stations
Scoring higher
2,551stations in California
Sharing its score
7ranks 2,552 to 2,558
Points deducted
10.75.1 reports received, 2.9 accuracy, 1.0 continuity, 1.0 arrival, 0.8 forecast check
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; California median 85.6, 100.0, 92.4
Next above
BATC1rank 2,557; ahead on reports received 85.7% against 85.2%
Next below
SFOrank 2,559; behind on 247 score 89.3 against 89.2

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.

  1. Reports receivedweight 3585.329.9 of 35 pointsCalifornia median 98.5781 of 916 scheduled reports received in 7 days
  2. Arrivalweight 1090.49.0 of 10 pointsCalifornia median 81.2half its reports arrived within 15 min
  3. Continuityweight 1090.29.0 of 10 pointsCalifornia median 100.0longest silence 45 min, on a schedule of one report every 11 min
  4. Accuracyweight 20-17.1 of 20 points, at the medianCalifornia median 85.6-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianCalifornia median 100.0-
  6. Forecast checkweight 10-9.2 of 10 points, at the medianCalifornia median 92.4-

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 (33 min), none for 72 (13.2 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
Schedule
every 11 minon the hour's :01, :05, :20, :31, :35 and :50
Reports received, 24 hours
110 of 13084.6% of its schedule, 135 reports in all
Reports received, 7 days
783 of 91685.4% of its schedule, 989 reports in all
Days reported, 30 days
29 of 30
Longest silence, 7 days
34 minfrom Oct 15, 10:01 AM
Latest report
Oct 16, 6:20 AMlocal time
Time to reach Storm Station
15 min9 in 10 within 20 min

From Storm Station's own record of every report it heard from this station.

Its schedule is one report every 11 min, 130 in 24 hours. Two reports in the same 11 min count as one received.

Chart of the 4,465 ranked stations in California on Oct 16 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, 78; 10 to 19 per cent, 83; 20 to 29 per cent, 45; 30 to 39 per cent, 22; 40 to 49 per cent, 118; 50 to 59 per cent, 285; 60 to 69 per cent, 120; 70 to 79 per cent, 209; 80 to 89 per cent, 391; 90 to 99 per cent, 2,034; 100 per cent, 1,080. Portola Valley - Windy Hill received 85.2 per cent, 781 of 916 scheduled reports, rank 2,558 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 85.2%, 781 OF 916, RANK 2,558 OF 4,465PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101001,0000 to 97810 to 198320 to 294530 to 392240 to 4911850 to 5928560 to 6912070 to 7920980 to 8939190 to 992,0341001,080STATIONS, LOG SCALE
Chart of Portola Valley - Windy Hill's rank in California by how it reported, day by day, from 2026-09-26 to 2026-10-16: 2026-09-26 rank 2,857 of 3,089; 2026-09-27 rank 2,855 of 3,141; 2026-09-28 rank 3,057 of 3,395; 2026-09-29 rank 3,068 of 3,460; 2026-09-30 rank 3,072 of 3,491; 2026-10-01 rank 3,148 of 3,586; 2026-10-02 rank 2,759 of 3,944; 2026-10-03 rank 2,759 of 3,944; 2026-10-04 rank 2,705 of 4,072; 2026-10-05 rank 2,687 of 4,333; 2026-10-06 rank 2,763 of 4,362; 2026-10-07 rank 2,718 of 4,381; 2026-10-08 rank 2,714 of 4,405; 2026-10-09 rank 2,750 of 4,400; 2026-10-10 rank 2,757 of 4,400; 2026-10-11 rank 2,744 of 4,428; 2026-10-12 rank 2,668 of 4,446; 2026-10-13 rank 2,667 of 4,464; 2026-10-14 rank 2,672 of 4,466; 2026-10-15 rank 2,570 of 4,462; 2026-10-16 rank 2,558 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP11,0002,0003,0004,000Sep 26Sep 30Oct 4Oct 8Oct 12Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%1,080
90 to 99%2,034
80 to 89%391
70 to 79%209
60 to 69%120
50 to 59%285
40 to 49%118
30 to 39%22
20 to 29%45
10 to 19%83
0 to 9%78
DayRankStations rankedShare received
Oct 16, 20262,5584,46585.2%
Oct 15, 20262,5704,46285.5%
Oct 14, 20262,6724,46684.8%
Oct 13, 20262,6674,46484.4%
Oct 12, 20262,6684,44684.0%
Oct 11, 20262,7444,42883.8%
Oct 10, 20262,7574,40083.1%
Oct 9, 20262,7504,40083.2%
Oct 8, 20262,7144,40583.4%
Oct 7, 20262,7184,38183.9%
Oct 6, 20262,7634,36283.5%
Oct 5, 20262,6874,33384.0%
Oct 4, 20262,7054,07284.6%
Oct 3, 20262,7593,94484.8%
Oct 2, 20262,7593,94484.8%
Oct 1, 20263,1483,58684.8%
Sep 30, 20263,0723,49185.4%
Sep 29, 20263,0683,46085.1%
Sep 28, 20263,0573,39585.4%
Sep 27, 20262,8553,14186.2%
Sep 26, 20262,8573,08985.9%
Precipitation at Portola Valley - Windy Hill, precipitation from 0.00 to 416.78, the latest 416.78, in inches.PRECIPITATIONin0.00200.00400.00600.009 AM12 PM3 PM6 PM9 PMOct 163 AM6 AM
Reports received at Portola Valley - Windy Hill, reports from 7.0 to 14.0, the latest 7.0, in reports.REPORTS RECEIVEDreports0510159 AM12 PM3 PM6 PM9 PMOct 163 AM6 AM
The readings these charts were drawn from, as a table
HourPrecipitation inReports
Fri 16, 6 AM416.787
Fri 16, 5 AM416.7811
Fri 16, 4 AM416.7811
Fri 16, 3 AM416.7811
Fri 16, 2 AM416.7811
Fri 16, 1 AM416.7811
Thu 15, 11 PM0.0014
Thu 15, 10 PM0.0014
Thu 15, 9 PM0.0014
Thu 15, 8 PM0.0014
Thu 15, 7 PM0.0014
Thu 15, 6 PM0.0014
Thu 15, 5 PM0.0014
Thu 15, 4 PM0.0014
Thu 15, 3 PM0.0014
Thu 15, 2 PM0.0014
Thu 15, 1 PM0.0014
Thu 15, 12 PM0.0014
Thu 15, 11 AM0.0014
Thu 15, 10 AM0.0014
Thu 15, 9 AM0.0014
Thu 15, 8 AM0.0014
Thu 15, 7 AM0.0014
Precipitation at Portola Valley - Windy Hill, precipitation from 0.00 to 416.78, the latest 416.78, in inches.PRECIPITATIONin0.00200.00400.00600.00Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Reports received at Portola Valley - Windy Hill, reports from 7.0 to 14.0, the latest 7.0, in reports.REPORTS RECEIVEDreports051015Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
The readings these charts were drawn from, as a table
HourPrecipitation inReports
Fri 16, 6 AM416.787
Fri 16, 5 AM416.7811
Fri 16, 4 AM416.7811
Fri 16, 3 AM416.7811
Fri 16, 2 AM416.7811
Fri 16, 1 AM416.7811
Thu 15, 11 PM0.0014
Thu 15, 10 PM0.0014
Thu 15, 9 PM0.0014
Thu 15, 8 PM0.0014
Thu 15, 7 PM0.0014
Thu 15, 6 PM0.0014
Thu 15, 5 PM0.0014
Thu 15, 4 PM0.0014
Thu 15, 3 PM0.0014
Thu 15, 2 PM0.0014
Thu 15, 1 PM0.0014
Thu 15, 12 PM0.0014
Thu 15, 11 AM0.0014
Thu 15, 10 AM0.0014
Thu 15, 9 AM0.0014
Thu 15, 8 AM0.0014
Thu 15, 7 AM0.0014
Thu 15, 6 AM0.0014
Thu 15, 5 AM0.0014
Thu 15, 4 AM0.0014
Thu 15, 3 AM0.0014
Thu 15, 2 AM0.0014
Thu 15, 1 AM0.0014
Thu 15, 12 AM0.0014
Wed 14, 11 PM0.0014
Wed 14, 10 PM0.0014
Wed 14, 9 PM0.0014
Wed 14, 8 PM0.0014
Wed 14, 7 PM0.0014
Wed 14, 6 PM0.0014
Wed 14, 5 PM0.0014
Wed 14, 4 PM0.0014
Wed 14, 3 PM0.0014
Wed 14, 2 PM0.0014
Wed 14, 1 PM0.0014
Wed 14, 12 PM0.0014
Wed 14, 11 AM0.0014
Wed 14, 10 AM0.0014
Wed 14, 9 AM0.0014
Wed 14, 8 AM0.0014
Wed 14, 7 AM0.0014
Wed 14, 6 AM0.0014
Wed 14, 5 AM0.0014
Wed 14, 4 AM0.0014
Wed 14, 3 AM0.0014
Wed 14, 2 AM0.0014
Wed 14, 1 AM0.0014
Wed 14, 12 AM0.0014
Tue 13, 11 PM0.0014
Tue 13, 10 PM0.0014
Tue 13, 9 PM0.0014
Tue 13, 7 PM0.0014
Tue 13, 6 PM0.0014
Tue 13, 5 PM0.0014
Tue 13, 4 PM0.0014
Tue 13, 3 PM0.0014
Tue 13, 2 PM0.0014
Tue 13, 1 PM0.0014
Tue 13, 12 PM0.0014
Tue 13, 11 AM0.0014
Tue 13, 10 AM0.0014
Tue 13, 9 AM0.0013
Tue 13, 8 AM0.0014
Tue 13, 7 AM0.0014
Tue 13, 6 AM0.0014
Tue 13, 5 AM0.0014
Tue 13, 4 AM0.0014
Tue 13, 3 AM0.0014
Tue 13, 2 AM0.0014
Tue 13, 1 AM0.0014
Tue 13, 12 AM0.0014
Mon 12, 11 PM0.0014
Mon 12, 10 PM0.0014
Mon 12, 9 PM0.0014
Mon 12, 8 PM0.0014
Mon 12, 7 PM0.0014
Mon 12, 6 PM0.0014
Mon 12, 5 PM0.0014
Mon 12, 4 PM0.0014
Mon 12, 3 PM0.0014
Mon 12, 2 PM0.0014
Mon 12, 1 PM0.0014
Mon 12, 12 PM0.0014
Mon 12, 11 AM0.0014
Mon 12, 10 AM0.0014
Mon 12, 9 AM0.0014
Mon 12, 8 AM0.0014
Mon 12, 7 AM0.0014
Mon 12, 6 AM0.0014
Mon 12, 5 AM0.0014
Mon 12, 4 AM0.0014
Mon 12, 3 AM0.0014
Mon 12, 2 AM0.0014
Mon 12, 1 AM0.0014
Mon 12, 12 AM0.0014
Sun 11, 11 PM0.0014
Sun 11, 10 PM0.0014
Sun 11, 9 PM0.0014
Sun 11, 8 PM0.0014
Sun 11, 6 PM0.0014
Sun 11, 5 PM0.0014
Sun 11, 4 PM0.0014
Sun 11, 3 PM0.0014
Sun 11, 2 PM0.0014
Sun 11, 1 PM0.0014
Sun 11, 11 AM0.0014
Sun 11, 8 AM0.0014
Sun 11, 7 AM0.0014
Sun 11, 6 AM0.0014
Sun 11, 5 AM0.0014
Sun 11, 4 AM0.0014
Sun 11, 3 AM0.0014
Sun 11, 2 AM0.0014
Sun 11, 1 AM0.0014
Sun 11, 12 AM0.0014
Sat 10, 11 PM0.0014
Sat 10, 10 PM0.0014
Sat 10, 9 PM0.0014
Sat 10, 8 PM0.0014
Sat 10, 7 PM0.0014
Sat 10, 6 PM0.0014
Sat 10, 5 PM0.0014
Sat 10, 4 PM0.0014
Sat 10, 3 PM0.0014
Sat 10, 2 PM0.0014
Sat 10, 1 PM0.0014
Sat 10, 12 PM0.0014
Sat 10, 11 AM0.0014
Sat 10, 10 AM0.0014
Sat 10, 9 AM0.0014
Sat 10, 8 AM0.0014
Sat 10, 7 AM0.0014
Sat 10, 6 AM0.0014
Sat 10, 5 AM0.0014
Sat 10, 4 AM0.0014
Sat 10, 3 AM0.0014
Sat 10, 2 AM0.0014
Sat 10, 1 AM0.0014
Sat 10, 12 AM0.0014
Fri 9, 11 PM0.0014
Fri 9, 10 PM0.0014
Fri 9, 9 PM0.0014
Fri 9, 8 PM0.0014
Fri 9, 7 PM0.0014
Fri 9, 6 PM0.0014
Fri 9, 5 PM0.0014
Fri 9, 4 PM0.0014
Fri 9, 3 PM0.0014
Fri 9, 2 PM0.0014
Fri 9, 1 PM0.0014
Fri 9, 12 PM0.0014
Fri 9, 11 AM0.0014
Fri 9, 10 AM0.0014
Fri 9, 9 AM0.0014
Fri 9, 8 AM0.0014
Fri 9, 7 AM0.0014
Precipitation at Portola Valley - Windy Hill, precipitation from 0.00 to 0.02, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.10Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12
The readings these charts were drawn from, as a table
DayPrecipitation in
Oct 150.00
Oct 140.00
Oct 130.00
Oct 120.00
Oct 110.00
Oct 100.00
Oct 90.00
Oct 80.00
Oct 70.00
Oct 60.00
Oct 50.00
Oct 40.00
Oct 30.00
Oct 20.00
Oct 10.00
Sep 300.00
Sep 290.00
Sep 280.00
Sep 270.00
Sep 260.00
Sep 250.00
Sep 240.00
Sep 230.00
Sep 220.00
Sep 210.02
Sep 200.00
Sep 190.01
Sep 180.00
Sep 170.00

Near Portola Valley - Windy Hill