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Live/247 Rank/California

California 24/7 Rank

Every station in California ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

4,465 stations ranked24.1% sent every report dueranked October 16, 2026page 16 of 18California instrumentsCalifornia weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 4,465 ranked here, 4,238 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every station, ranked

RankStationScorePartsNetworkCountyReceivedReportsArrives inLongest silence
3,751Citizen station KD8ZVCKD8ZVC78.6CitizenNevada51.1%258 of 50415 s3.1 h
3,752Truckee - Tahoe Donner RAWSTADC178.5GaugeNevada100%168 of 16812 min60 min
3,753Templeton - Paso Robles CreekPSOC178.5GaugeSan Luis Obispo81.5%137 of 16829 min32.8 h
3,754Bodega Marine ReserveBDZC178.5GaugeSonoma78.5%396 of 50435 min5.7 h
3,755Citizen station CW9520CW952078.5CitizenSanta Clara57.1%144 of 25218 s4.3 h
3,756Joshua TreeJSTC178.5CooperativeSan Bernardino57.1%4 of 78.5 h2 days
3,757Citizen station GW7397GW739778.5CitizenSolano56.7%173 of 30516 s4.4 h
3,758Citizen station GW4969GW496978.5CitizenSanta Clara53.5%270 of 50419 s2.4 h
3,759Citizen station EW7525EW752578.5CitizenSonoma52.3%264 of 50417 s2.7 h
3,760Citizen station GW2993GW299378.5CitizenSan Bernardino47.7%107 of 22418 s5 h
3,761Hemet 9E - San Jacinto RiverCNNC178.4GaugeRiverside79.7%134 of 16874 min4 h
3,762Whitemore Hot Springs 2SW - ValentineVESC178.4GaugeSierra78.1%394 of 50435 min5.7 h
3,763Los Banos DamLBDC178.4GaugeMerced66.6%112 of 16830 min6.3 h
3,764Citizen station FW4637FW463778.4CitizenSan Francisco54.3%274 of 50419 s3.7 h
3,765Citizen station FW7595FW759578.4CitizenOrange51.7%116 of 22417 s5 h
3,766Citizen station K1FIEK1FIE78.4CitizenEl Dorado49.5%111 of 22417 s5.5 h
3,767Downieville - Canyon CreekSWMC178.3GaugeNevada54.1%91 of 16820 min2 h
3,768Citizen station GW2765GW276578.3CitizenRiverside52.1%263 of 50418 s3.9 h
3,769Fairfax 1ENE - Sleepy Hollow CreekSYIC178.2GaugeMarin79.9%537 of 67223 min11.5 h
3,770I-205 - Hansen OCCF10478.2RoadSan Joaquin77.1%389 of 50415 min18.7 h
3,771Citizen station KG6MOZKG6MOZ78.2CitizenSan Diego57.5%290 of 50418 s3.1 h
3,772Citizen station FW2001FW200178.2CitizenMarin51.7%261 of 50416 s2.8 h
3,773Heavenly Valley SnotelHVNC178.1GaugeEl Dorado99.4%167 of 16835 min2 h
3,774Ontario - FS3OFDC178.1GaugeSan Bernardino85.1%143 of 16873 min8 h
3,775Genesee 4WNW - Heart K RanchHRXC178.1GaugePlumas82.1%138 of 16850 min10.8 h
3,776Cuyamaca Dam Alert #54 And #88CYDC178.1GaugeSan Diego77.9%561 of 72012 min28 h
3,777Dinsmore 2.4 WNWCA-HM-18978.1VolunteerHumboldt57.1%4 of 79.4 h2.4 days
3,778Garberville 0.8 NNWCA-HM-7878.1VolunteerHumboldt57.1%4 of 79.4 h3 days
3,779Citizen station FW0492FW049278.1CitizenRiverside56.0%297 of 53017 s2.7 h
3,780Citizen station EW9869EW986978.1CitizenSan Bernardino55.3%124 of 22418 s6.8 h
3,781Citizen station EW9070EW907078.1CitizenSonoma52.2%117 of 22421 s7.5 h
3,782Citizen station FW9876FW987678.1CitizenSan Diego51.3%167 of 32519 s5.5 h
3,783Citizen station FW8683FW868378.1CitizenYolo47.3%106 of 22417 s5.3 h
3,784Montecito #5076 RAWSMTIC178.0GaugeSanta Barbara100%168 of 16818 min74 min
3,785Taylor RidgeTYRC178.0GaugeTrinity100%168 of 16825 min61 min
3,786Rodeo - Rodeo CreekRHTC178.0GaugeContra Costa79.4%534 of 67225 min10.3 h
3,787JulianJLNC178.0GaugeSan Diego77.7%560 of 72013 min28 h
3,788Citizen station GW1025GW102578.0CitizenVentura56.6%150 of 26517 s4.7 h
3,789Citizen station CW9461CW946178.0CitizenContra Costa50.9%257 of 50416 s3.7 h
3,790Citizen station FW1939FW193978.0CitizenSan Luis Obispo49.2%310 of 63019 s2.4 h
3,791Citizen station FW0579FW057978.0CitizenSan Joaquin48.8%82 of 16817 s8.7 h
3,792Phelan - Cajon WestCJUC177.9GaugeSan Bernardino83.3%70 of 842.3 h13.9 h
3,793Yucaipa Ridge Alert PrecipYUCC177.9GaugeSan Bernardino82.7%139 of 16874 min6.4 h
3,794Citizen station F3625F362577.9CitizenContra Costa56.9%302 of 53019 s2.5 h
3,795HiltRWISCD01177.9RoadSiskiyou55.8%375 of 67220 min60 min
3,796San BernardinoSBD77.9AirportSan Bernardino54.9%277 of 5049 min2.2 h
3,797Citizen station DW7531DW753177.9CitizenRiverside53.4%117 of 21918 s7.3 h
3,798Citizen station EW1867EW186777.9CitizenSacramento52.2%117 of 22419 s5.9 h
3,799Citizen station CW9181CW918177.9CitizenSacramento51.5%260 of 50419 s2.4 h
3,800Citizen station GW5968GW596877.9CitizenSanta Barbara48.2%108 of 22417 s6.3 h
3,801Idyllwild 4NW - Alandale AlertALNC177.8GaugeRiverside83.3%140 of 16865 min7 h
3,802I-580 - I-205CF13377.8RoadAlameda76.3%385 of 50415 min21.3 h
3,803Rio Linda - Dry CreekDIVC177.8GaugeSacramento75.6%127 of 16825 min28 h
3,804Brentwood 1W - Marsh CreekMKDC177.8GaugeContra Costa66.2%445 of 67235 min75 min
3,805Citizen station N6OPVN6OPV77.8CitizenSan Luis Obispo56.4%237 of 42016 s2.4 h
3,806Citizen station GW0353GW035377.8CitizenMono54.3%288 of 53017 s2.8 h
3,807Citizen station GW1307GW130777.8CitizenSanta Clara52.3%88 of 16818 s13 h
3,808Citizen station GW3053GW305377.8CitizenSan Luis Obispo49.5%333 of 67217 s2.5 h
3,809Citizen station EW8187EW818777.8CitizenSan Bernardino46.8%105 of 22417 s5.3 h
3,810Adobe Creek At Foothill CollegeAFCC177.7GaugeSanta Clara83.1%559 of 67224 min28 h
3,811Lexington Hills - Los GatosLRYC177.7GaugeSanta Clara83.1%559 of 67224 min28 h
3,811East Foothills - Upper Penitencia CreekUPCC177.7GaugeSanta Clara83.1%559 of 67224 min28 h
3,813Alviso - Guagalupe RiverGUGC177.7GaugeSanta Clara83.1%559 of 67224 min28 h
3,814Rancho CordovaRNCC177.7GaugeSacramento74.4%125 of 16825 min25 h
3,815Upload - Cucamonga CreekCMUC177.7GaugeSan Bernardino66.0%111 of 16815 min19 h
3,816San Diego 3.5 ENECA-SD-17277.7VolunteerSan Diego57.1%4 of 79.4 h3.4 days
3,817Citizen station DW2000DW200077.7CitizenLassen54.0%218 of 40319 s3.5 h
3,818Citizen station EW6618EW661877.7CitizenLos Angeles53.8%104 of 19318 s9 h
3,819Citizen station CW1792CW179277.7CitizenSanta Clara52.5%265 of 50420 s3 h
3,820BNEC1BNEC177.7DCP-50.0%15 of 3015 min24 h
3,821Mount Baldy #3352MTBC177.6GaugeSan Bernardino100%168 of 16810 min60 min
3,822San Jose - Coyote CreekCYYC177.6GaugeSanta Clara83.0%558 of 67224 min28 h
3,823Martinez 0.8 SSECA-CC-177.6VolunteerContra Costa57.1%4 of 710.4 h2 days
3,824Citizen station EW3055EW305577.6CitizenSan Diego50.7%256 of 50418 s3.1 h
3,825Citizen station FW5196FW519677.6CitizenSan Diego50.2%110 of 21916 s5.5 h
3,826Citizen station EW8682EW868277.6CitizenLos Angeles49.5%111 of 22419 s3.3 h
3,827Citizen station CW9585CW958577.6CitizenSanta Cruz47.6%240 of 50418 s2.8 h
3,828Peterson Flat (GOES)PTFC177.5GaugeTrinity100%168 of 16829 min76 min
3,829Santa Clara - Guadalupe River MontagueGUMC177.5GaugeSanta Clara82.7%556 of 67224 min28 h
3,830Citizen station EW3241EW324177.5CitizenSan Diego58.1%293 of 50417 s4.5 h
3,831La Verne/BrackettPOC77.5AirportLos Angeles55.3%93 of 16812 min13 h
3,832Citizen station FW6046FW604677.5CitizenLos Angeles52.5%265 of 50416 s3 h
3,833Portola Valley 2N - Bear CreekSHJC177.4GaugeSan Mateo83.3%140 of 16840 min28.4 h
3,834Citizen station GW4205GW420577.4CitizenStanislaus54.4%166 of 30517 s5.6 h
3,835Big Dalton Dam Alert #419BDDC177.4GaugeLos Angeles53.4%337 of 63020 min60 min
3,836Citizen station EW5843EW584377.4CitizenSan Diego50.6%170 of 33617 s4.3 h
3,837GasquetGQEC177.3GaugeDel Norte100%168 of 16815 min71 min
3,838Spring Vly RAWSHSPC177.3GaugeSan Mateo99.4%167 of 16817 min2 h
3,839Sand FlatSDFC177.3GaugeSiskiyou98.8%166 of 16830 min1.8 h
3,840Pilot PeakPLPC177.3GaugePlumas68.1%229 of 33645 min2 h
3,841Citizen station FW3932FW393277.3CitizenContra Costa61.7%311 of 50418 s3 h
3,842Citizen station EW8945EW894577.3CitizenSanta Clara54.3%274 of 50415 s3.2 h
3,843Citizen station N6BWXN6BWX77.3CitizenSan Bernardino49.0%247 of 50419 s2.7 h
3,844Citizen station FW3178FW317877.3CitizenSan Bernardino48.6%109 of 22419 s4.5 h
3,845Citizen station FW0145FW014577.3CitizenRiverside48.6%288 of 59217 s3 h
3,846Citizen station FW1241FW124177.3CitizenTulare47.9%138 of 28814 s5.7 h
3,847Burns Canyon RAWSBCNC177.2GaugeSan Bernardino100%168 of 16814 min70 min
3,848WeavervilleO5477.2AirportTrinity99.6%502 of 50418 min46 min
3,849Beaumont CityBUMC177.2GaugeRiverside81.5%137 of 16874 min7 h
3,850Banning - Vista GrandeVTGC177.2GaugeRiverside80.0%136 of 17055 min8 h
3,851OrangvaleORGC177.2GaugeSacramento73.8%124 of 16825 min28 h
3,852Willow Brook Ck PrecipWBRC177.2GaugeSonoma70.8%119 of 168-28 h
3,853Point ArguelloNDBC-PTGC177.2GaugeSanta Barbara61.5%310 of 50423 min1.7 h
3,854Whittier 2.9 WNWCA-LA-1077.2VolunteerLos Angeles57.1%4 of 711.4 h2.4 days
3,854Lemon Grove 0.9 WCA-SD-15777.2VolunteerSan Diego57.1%4 of 711.4 h2.4 days
3,854El Granada 0.4 WSWCA-SM-4477.2VolunteerSan Mateo57.1%4 of 711.4 h2.4 days
3,857Yorba Linda 1.5 WCA-OR-11577.2VolunteerOrange57.1%4 of 711.4 h2.5 days
3,858Citizen station DW8427DW842777.2CitizenSacramento48.6%109 of 22417 s6 h
3,859Novato 4WNCTC177.1GaugeMarin80.3%540 of 67229 min11.3 h
3,860Santa SusanaASIC177.1GaugeVentura79.7%134 of 16875 min6 h
3,86151SB at Elvas Pump HouseCF18177.1RoadSacramento61.6%565 of 91615 min5.5 h
3,862Citizen station KB6HGNKB6HGN77.1CitizenSan Bernardino56.1%283 of 50420 s2.8 h
3,863Citizen station DW4438DW443877.1CitizenRiverside52.6%354 of 67217 s2 h
3,864Citizen station KN6TEDKN6TED77.1CitizenSutter48.8%328 of 67215 s2.3 h
3,865Citizen station EW7041EW704177.1CitizenAlameda48.4%106 of 21919 s7.5 h
3,866Clear CRKCLCC177.0GaugeShasta100%168 of 16825 min61 min
3,867Bear River - Rollins RsvrROLC177.0GaugePlacer100%168 of 16830 min75 min
3,868Rock Camp RAWSRCPC177.0GaugeSan Bernardino99.4%167 of 16813 min2 h
3,869Folsom Dam - Folsom Point (Dyke 8)FSLC177.0GaugeSacramento80.6%542 of 67216 min25.4 h
3,870Novato 4SE - PachecoNVPC177.0GaugeMarin74.8%503 of 67225 min8.4 h
3,871Rio Linda 1S - Dry Creek WestEKBC177.0GaugeSacramento73.2%123 of 16825 min28 h
3,872Citizen station N6ZQKN6ZQK77.0CitizenPlacer55.9%235 of 42018 s2.9 h
3,873Citizen station KI6KEPKI6KEP77.0CitizenSan Bernardino55.0%241 of 43820 s4.4 h
3,874Citizen station FW7177FW717777.0CitizenSonoma50.0%112 of 22420 s6.3 h
3,875Citizen station FW6803FW680377.0CitizenSan Francisco48.2%108 of 22418 s6.3 h
3,876Morgan SummitCF17976.9RoadTehama79.1%532 of 67221 min22.1 h
3,877Amboy 1NEABOC176.9GaugeSan Bernardino75.6%127 of 16875 min4 h
3,878Miller Ave - Uvas CreekUVMC176.8GaugeSanta Clara80.8%543 of 67224 min28 h
3,879Oceano - Los Berros CreekLBVC176.8GaugeSanluis Obispo75.1%505 of 67214 min27.9 h
3,880Arroyo Mocho - PleasantonAYMC176.8GaugeAlameda74.4%500 of 67229 min6.5 h
3,881Woodside 2SSE - Searsville LakeSVHC176.7GaugeSan Mateo83.9%141 of 16845 min28 h
3,882San Marcos Cnty LandfillNMLC176.7GaugeSan Diego73.4%529 of 72014 min28 h
3,883Bishop 1.8 WSWCA-IN-1576.7VolunteerInyo57.1%4 of 712.4 h2.4 days
3,884Citizen station EW6413EW641376.7CitizenContra Costa54.7%276 of 50417 s3.7 h
3,885Citizen station FW7514FW751476.7CitizenContra Costa53.4%337 of 63017 s2.9 h
3,886Citizen station EW6025EW602576.7CitizenMendocino53.2%179 of 33617 s4.2 h
3,887Citizen station AE6EOAE6EO76.6CitizenSanta Clara53.5%135 of 25220 s6.7 h
3,888Citizen station EW8927EW892776.6CitizenKern51.7%116 of 22418 s5.8 h
3,889Citizen station FW3625FW362576.6CitizenContra Costa50.1%337 of 67218 s2 h
3,890Union City 2SSW - Crandall CreekCDPC176.5GaugeAlameda83.0%558 of 67230 min28 h
3,891Truckee RsTKEC176.5GaugeNevada56.2%189 of 33614 min5.1 h
3,892Citizen station EW1845EW184576.5CitizenLos Angeles55.0%185 of 33619 s5.5 h
3,893Citizen station GW4045GW404576.5CitizenRiverside46.4%104 of 22418 s6.3 h
3,894Danville 1ENE - Green Valley CreekGVDC176.4GaugeContra Costa79.9%537 of 67225 min24 h
3,895Bridgeport ValleyBVAC176.4GaugeMono73.6%371 of 50435 min6.3 h
3,896Anderson GradeCD00176.4RoadSiskiyou72.0%484 of 67221 min60 min
3,897BTOC1BTOC176.4DCP-71.4%5 of 755.2 h2.7 days
3,898Roseville 2ESE - Linda Creek WoodlakeLIWC176.4GaugePlacer66.6%112 of 16817 min28 h
3,899Citizen station GW0758GW075876.4CitizenAlameda54.4%122 of 22416 s7.5 h
3,900Torrance MunicipalTOA76.4AirportLos Angeles53.7%271 of 50413 min7.7 h
3,901Citizen station DW0490DW049076.4CitizenOrange49.5%333 of 67218 s3.6 h
3,902Chiriaco SummitRCOC176.4CooperativeRiverside42.8%3 of 723 min3 days
3,903McKinleyville 1.5 NECA-HM-15976.4VolunteerHumboldt42.8%3 of 726 min24 h
3,904Aliso Viejo 1.1 SSWCA-OR-11776.4VolunteerOrange42.8%3 of 726 min2.4 days
3,905Poway 1.9 SCA-SD-24676.4VolunteerSan Diego42.8%3 of 726 min25 h
3,906Silverado 1.0 ESECA-OR-676.4VolunteerOrange42.8%3 of 726 min24 h
3,906Redwood City 3.3 SSWCA-SM-2576.4VolunteerSan Mateo42.8%3 of 726 min24 h
3,908Ladera Ranch 0.4 SWCA-OR-9276.4VolunteerOrange42.8%3 of 726 min2.4 days
3,908Sun City 0.4 NNWCA-RV-8376.4VolunteerRiverside42.8%3 of 726 min2.4 days
3,908Cherry Valley 0.8 ESECA-RV-8876.4VolunteerRiverside42.8%3 of 726 min2.4 days
3,908Hemet 3.0 NECA-RV-8976.4VolunteerRiverside42.8%3 of 726 min2.4 days
3,908San Diego 7.6 SECA-SD-18176.4VolunteerSan Diego42.8%3 of 726 min2.4 days
3,908Cardiff by the Sea 0.2 ECA-SD-2376.4VolunteerSan Diego42.8%3 of 726 min2.4 days
3,914Laguna Niguel 2.3 NNECA-OR-10076.4VolunteerOrange42.8%3 of 726 min2.5 days
3,915WascoWASC176.4CooperativeKern42.8%3 of 728 min2.4 days
3,916Torrance 1.0 ECA-LA-11676.4VolunteerLos Angeles42.8%3 of 786 min2.4 days
3,916Norco 1.6 SSECA-RV-10776.4VolunteerRiverside42.8%3 of 786 min2.4 days
3,918Claremont 0.7 SECA-LA-10676.4VolunteerLos Angeles42.8%3 of 786 min2.4 days
3,919Boulder Creek 4.1 NCA-SZ-3676.4VolunteerSanta Cruz42.8%3 of 786 min25 h
3,920Rialto 2.1 NCA-SR-2976.4VolunteerSan Bernardino42.8%3 of 786 min2.4 days
3,921Lakeside 0.9 NECA-SD-22476.4VolunteerSan Diego42.8%3 of 786 min2.4 days
3,921Valley Center 6.1 NNWCA-SD-23476.4VolunteerSan Diego42.8%3 of 786 min2.4 days
3,923Rolling Hills 3.9 SECA-LA-9776.4VolunteerLos Angeles42.8%3 of 72.4 h2.4 days
3,924Temescal Valley 2.0 ECA-RV-8176.4VolunteerRiverside42.8%3 of 72.4 h2.4 days
3,925Lake LoisLLSC176.3GaugeEl Dorado100%168 of 16825 min61 min
3,925Trinity Guard STNTGSC176.3GaugeShasta100%168 of 16825 min61 min
3,927Citizen station GW0319GW031976.3CitizenMarin52.5%265 of 50419 s3.5 h
3,928Citizen station GW1001GW100176.3CitizenSonoma48.2%243 of 50416 s2.6 h
3,929Carmel Valley 3W - Santa Lucia ConservancySXLC176.2GaugeMonterey98.8%166 of 16850 min2 h
3,930Lower Bath House - SFSULBHC176.2GaugeSierra85.1%143 of 16855 min20 h
3,931Inyokern 9.4 WSWCA-KN-176.2VolunteerKern57.1%4 of 713.4 h3 days
3,932Citizen station FW9733FW973376.2CitizenSan Bernardino52.5%115 of 21916 s5.8 h
3,933Citizen station GW6983GW698376.2CitizenAlameda50.1%505 of 1,00817 s1.5 h
3,934La / WhitemanWHP76.2AirportLos Angeles48.2%81 of 1684 min15 h
3,935Goleta - San Marcos Pass RAWSMPWC176.1GaugeSanta Barbara99.4%167 of 16819 min2 h
3,936Santa BarbaraNDBC-NTBC176.1GaugeSanta Barbara79.1%133 of 16837 min13 h
3,937Casitas Station - Station CanyonSAYC176.1GaugeVentura76.7%129 of 16875 min6 h
3,938Carmichael 2NW - Arcade CreekAPSC176.1GaugeSacramento70.8%119 of 16825 min28 h
3,939Citizen station CW3884CW388476.1CitizenContra Costa53.3%215 of 40317 s5.4 h
3,940Citizen station EW6829EW682976.1CitizenSonoma50.4%113 of 22416 s5.5 h
3,941Ojai 1SSE - Bower Tree FarmOJWC176.0GaugeVentura79.1%133 of 16875 min8 h
3,942Sacramento - NatomasNDCC176.0GaugeSacramento71.9%151 of 21024 min28 h
3,943Roseville 4NW - Kasberg CreekKCFC176.0GaugePlacer67.8%114 of 16821 min28 h
3,944Pleasanton 2NW - Parkside DriveXPDC176.0GaugeAlameda65.3%439 of 67225 min4 h
3,945Ventura 1SE - Ventura HarborVHBC176.0GaugeVentura61.4%413 of 67229 min1.9 h
3,946Citizen station DW0345DW034576.0CitizenLos Angeles53.9%544 of 1,00817 s2.4 h
3,947Thousand Oaks 2.3 NECA-VT-1876.0VolunteerVentura42.8%3 of 726 min3.4 days
3,948Apple Valley 4.1 ENECA-SR-6676.0VolunteerSan Bernardino42.8%3 of 726 min3.4 days
3,949Anaheim 7.3 ECA-OR-3976.0VolunteerOrange42.8%3 of 785 min3.4 days
3,950San Diego 5.2WNWCA-SD-5576.0VolunteerSan Diego42.8%3 of 786 min3.4 days
3,951Rio Linda WcRILC175.9GaugeSacramento76.4%257 of 33625 min28 h
3,952ColumbiaO2275.9AirportStanislaus51.3%259 of 50413 min5.3 h
3,953Escondido 2.5 SSECA-SD-1075.9VolunteerSan Diego42.8%3 of 726 min3.5 days
3,953Encinitas 1.2 ENECA-SD-25375.9VolunteerSan Diego42.8%3 of 726 min3.5 days
3,955San Clemente 1.2 NWCA-OR-11175.9VolunteerOrange42.8%3 of 786 min3.5 days
3,956Ojai 5.9 ECA-VT-3175.9VolunteerVentura42.8%3 of 72.4 h3.4 days
3,957Piedmont 1.0 SECA-AL-175.9VolunteerAlameda42.8%3 of 73.4 h24 h
3,958Grass Valley 1.3 NNECA-NV-3575.9VolunteerNevada42.8%3 of 73.4 h3 days
3,959Walker RAWSWALC175.8GaugeMono100%168 of 16817 min73 min
3,960SRFD Newgate CourtQSNC175.8GaugeSonoma98.8%166 of 16819 min2 h
3,961Anderson PeakANPC175.8GaugeMonterey63.6%321 of 50415 min9 h
3,962Ridgecrest 1.2 SECA-KN-4075.8VolunteerKern57.1%4 of 714.4 h47 h
3,963Citizen station EW7585EW758575.8CitizenHumboldt53.3%336 of 63018 s2.9 h
3,964Citizen station CW2285CW228575.8CitizenRiverside51.3%259 of 50420 s2.8 h
3,965AlphaAPHC175.7GaugeEl Dorado99.4%167 of 16825 min2 h
3,966Conejo Creek At Ridge ViewCJRC175.7GaugeVentura67.7%683 of 1,00820 min5.3 h
3,967Citizen station DW9108DW910875.7CitizenSan Diego51.7%348 of 67217 s3 h
3,968Citizen station GW6246GW624675.7CitizenOrange51.3%148 of 28817 s6.6 h
3,969CDWC1CDWC175.7DCP-45.2%19 of 4215 min19.1 h
3,970Yucaipa County Park - Alert #2897YCPC175.6GaugeSan Bernardino79.1%133 of 16875 min9 h
3,971Pier 17, San Francisco BayNDBC-PXSC175.6GaugeSan Francisco75.3%253 of 33643 min6.5 h
3,972Citizen station EW1734EW173475.6CitizenLos Angeles57.7%1,940 of 3,36015 s39 min
3,973Citizen station CW5061CW506175.6CitizenHumboldt53.5%270 of 50418 s2.8 h
3,974Citizen station FW4319FW431975.6CitizenSan Bernardino53.1%119 of 22416 s5.5 h
3,975Citizen station GW3349GW334975.6CitizenYolo52.6%354 of 67217 s2.7 h
3,976Susanville 2SWSNVC175.6CooperativeLassen42.8%3 of 717 min3.9 days
3,977Ocotillo Wells Stpk - Alert #140OCWC175.5GaugeSan Diego77.3%557 of 72014 min28 h
3,978Citizen station EW9135EW913575.5CitizenContra Costa54.1%260 of 48019 s2.7 h
3,979Phelan LandfillPHEC175.4GaugeSan Bernardino75.0%126 of 16875 min6 h
3,980Roseville 3NW - Crocker RanchCKAC175.4GaugePlacer67.2%113 of 16823 min28 h
3,981San Bernardino - Fontana 5NFSSC175.4GaugeSan Bernardino60.6%91 of 15048 min3.9 h
3,982Thousand Oaks 2.1 WSWCA-VT-175.4VolunteerVentura42.8%3 of 74.4 h2.5 days
3,983Rubicon #2 SnotelRUBC175.3GaugeEl Dorado97.6%164 of 16835 min2 h
3,984Georgiana SloughGGSC175.3GaugeSacramento68.4%115 of 16825 min28 h
3,985Citizen station DW9436DW943675.3CitizenNevada60.3%304 of 50418 s3.6 h
3,986Citizen station GW1055GW105575.3CitizenPlacer51.9%349 of 67218 s2.4 h
3,987Citizen station EW8167EW816775.3CitizenSanta Clara48.6%104 of 21419 s5.5 h
3,988Hwy 28 at DollarCD04175.2RoadPlacer96.2%485 of 50416 min60 min
3,989Angeles Hill Alert 878AGLC175.2GaugeRiverside77.0%131 of 17063 min8 h
3,990Angelus Oaks 5ENE - Barton FlatsBTFC175.2GaugeSan Bernardino70.8%119 of 16884 min4 h
3,991Stockton 6NW - Five MileFMPC175.2GaugeSan Joaquin66.0%111 of 16821 min28 h
3,992SR-99 - North of Shanks RoadCF14675.2RoadMerced56.1%566 of 1,00815 min2.3 h
3,993Citizen station DW3838DW383875.2CitizenSonoma54.4%122 of 22420 s5.6 h
3,994Citizen station FW4463FW446375.2CitizenAlameda54.1%273 of 50419 s3.3 h
3,995Citizen station DW4415DW441575.2CitizenVentura50.0%252 of 50420 s3.1 h
3,996Citizen station EW7741EW774175.2CitizenContra Costa49.1%236 of 48017 s3.8 h
3,997Citizen station EW1292EW129275.2CitizenRiverside46.2%1,165 of 2,52016 s48 min
3,998Watsonville 3.9 NWCA-SZ-5175.2VolunteerSanta Cruz42.8%3 of 726 min4.4 days
3,999Arastradero Road (LTAA)LTQC175.1GaugeSan Mateo79.1%133 of 16845 min28 h
4,000Citizen station GW7226GW722675.1CitizenStanislaus56.3%284 of 50416 s4.3 h

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

  1. Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
  2. Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
  3. Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
  4. Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading; an airfield is compared with the nearest other airport, never its own report. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
  5. Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
  6. Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.