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Live/247 Rank/Tennessee

Tennessee 24/7 Rank

Every station in Tennessee 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.

1,019 stations ranked34.8% sent every report dueranked October 16, 2026page 1 of 5Tennessee instrumentsTennessee 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 1,019 ranked here, 1,014 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every ranked station, first to last

1stLast
Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

089178266355under 10%: 1 stations1010 to 19%: 8 stations81020 to 29%: 22 stations222030 to 39%: 6 stations63040 to 49%: 75 stations754050 to 59%: 115 stations1155060 to 69%: 18 stations186070 to 79%: 76 stations767080 to 89%: 96 stations968090 to 99%: 247 stations24790every report: 355 stations355100Share of scheduled reports received in the week, per cent

The days behind it

7 days30 days90 days

02555107641,019October 10, 2026, every report: 311October 10, 2026, 90 to 99%: 271October 10, 2026, under 90%: 419October 11, 2026, every report: 302October 11, 2026, 90 to 99%: 276October 11, 2026, under 90%: 425October 12, 2026, every report: 309October 12, 2026, 90 to 99%: 275October 12, 2026, under 90%: 423October 13, 2026, every report: 331October 13, 2026, 90 to 99%: 271October 13, 2026, under 90%: 412October 14, 2026, every report: 322October 14, 2026, 90 to 99%: 279October 14, 2026, under 90%: 411October 15, 2026, every report: 384October 15, 2026, 90 to 99%: 225October 15, 2026, under 90%: 403October 16, 2026, every report: 355October 16, 2026, 90 to 99%: 247October 16, 2026, under 90%: 417October 10, 2026October 16, 2026

every report90 to 99%under 90%

Every station, ranked

RankStationScorePartsNetworkCountyReceivedReportsArrives inLongest silence
1Morristown Moore-MurrellMOR99.9AirportHamblen99.8%503 of 50410 min45 min
2BolivarM0899.9AirportHardeman99.8%503 of 50410 min40 min
2AthensMMI99.9AirportMcminn99.8%503 of 50410 min40 min
2MadisonvilleMNV99.9AirportMonroe99.8%503 of 50410 min40 min
2ParisPHT99.9AirportHenry99.8%503 of 50410 min40 min
2Levington - Parson Beech RiverPVE99.9AirportHenderson99.8%503 of 50410 min40 min
2RockwoodRKW99.9AirportCumberland99.8%503 of 50410 min40 min
2Oneida ScottSCX99.9AirportScott99.8%503 of 50410 min40 min
9ClevelandRZR99.9AirportBradley99.8%503 of 50410 min40 min
9SibleySZY99.9AirportMcNairy99.8%503 of 50410 min40 min
11SomervilleFYE99.9AirportFayette99.6%502 of 50410 min40 min
12AthensAHNT199.8GaugeMcminn100%168 of 16853 s61 min
12Little River At Alcoa 3 NW Little River Near AlcoaALCT199.8GaugeBlount100%168 of 16853 s61 min
12Mill Creek AT AntiochANTT199.8GaugeDavidson100%168 of 16853 s61 min
12BurbankBBKT199.8GaugeCarter100%168 of 16853 s61 min
12Beech River 1 SW Beech River Below Beech Lake Dam Near LexingtonBCHT199.8GaugeMcnairy100%168 of 16853 s61 min
12Beech Lake HwBCKT199.8GaugeHenderson100%168 of 16853 s61 min
12Big LickBGLT199.8GaugeCumberland100%168 of 16853 s61 min
12Bruceton 1E - Big Sandy RiverBIGT199.8GaugeCarroll100%168 of 16853 s61 min
12RoganaBLCT199.8GaugeSumner100%168 of 16853 s61 min
12BethpageBPGT199.8GaugeSumner100%168 of 16853 s61 min
12Bullrun Creek AT Bullrun Creek near Halls CrossroadsBRCT199.8GaugeKnox100%168 of 16853 s61 min
12BrucetonBRUT199.8GaugeCarroll100%168 of 16853 s61 min
12Wolf River 1 N ByrdstownBYGT199.8GaugePickett100%168 of 16853 s61 min
12Calfkiller River 1 S SpartaCAFT199.8GaugeWhite100%168 of 16853 s61 min
12Crab OrchardCBOT199.8GaugeCumberland100%168 of 16853 s61 min
12Great Smoky Mountain N.P.CCVT199.8GaugeBlount100%168 of 16853 s61 min
12Cedar DamCEDT199.8GaugeHenderson100%168 of 16853 s61 min
12Church HillCHHT199.8GaugeHawkins100%168 of 16853 s61 min
12Hiwassee River At Hiwassee At CharlestonCHLT199.8GaugeMcminn100%168 of 16853 s61 min
12Ashland City - Cheatham DamCHPT199.8GaugeDickson100%168 of 16853 s61 min
12Tennessee River AT Chickamauga DamCKDT199.8GaugeHamilton100%168 of 16853 s61 min
12Chickamauga Dam TailwaterCKTT199.8GaugeHamilton100%168 of 16853 s61 min
12Cumberland River AT ClarksvilleCKVT199.8GaugeMontgomery100%168 of 16853 s61 min
12ClevelandCLET199.8GaugeBradley100%168 of 16853 s61 min
12Duck R.CNTT199.8GaugeHickman100%168 of 16853 s61 min
12Duck River AT CentervilleCNVT199.8GaugeHickman100%168 of 16853 s61 min
12Cordell Hull HeadwaterCOHT199.8GaugeSmith100%168 of 16853 s61 min
12Duck River 1 N ColumbiaCOLT199.8GaugeMaury100%168 of 16853 s61 min
12CookevilleCOOT199.8GaugePutnam100%168 of 16853 s61 min
12Cherokee DamCRLT199.8GaugeJefferson100%168 of 16853 s61 min
12Cumberland River AT CarthageCTHT199.8GaugeSmith100%168 of 16853 s61 min
12DecaturDECT199.8GaugeMeigs100%168 of 16853 s61 min
12SpartaDERT199.8GaugeWhite100%168 of 16853 s61 min
12Douglas DamDGTT199.8GaugeSevier100%168 of 16853 s61 min
12Dogwood DamDOGT199.8GaugeHenderson100%168 of 16853 s61 min
12DunlapDUNT199.8GaugeSequatchie100%168 of 16853 s61 min
12DaytonDYNT199.8GaugeRhea100%168 of 16853 s61 min
12Yellow Creek At Ellis MillsEMGT199.8GaugeHouston100%168 of 16853 s61 min
12EtowahETOT199.8GaugeMcminn100%168 of 16853 s61 min
12Watauga River At Watauga River At ElizabethtonEZBT199.8GaugeCarter100%168 of 16853 s61 min
12Ft. Loudoun Dam (Lenoir City 1E)FDTT199.8GaugeLoudon100%168 of 16853 s61 min
12Buffalo River 2 N Flat WoodsFLTT199.8GaugePerry100%168 of 16853 s61 min
12Fort Patrick Henry DamFPHT199.8GaugeSullivan100%168 of 16853 s61 min
12Gainesboro 6EGBOT199.8GaugeJackson100%168 of 16853 s61 min
12Smiths Fork N Temperance HallGVST199.8GaugeDe Kalb100%168 of 16853 s61 min
12Apalachia DamHADT199.8GaugePolk100%168 of 16853 s61 min
12Duck River 3 SE Hurricane MillsHMLT199.8GaugeHumphreys100%168 of 16853 s61 min
12IsolineISOT199.8GaugeCumberland100%168 of 16853 s61 min
12East Fork Obey River 5 W JamestownJAGT199.8GaugeFentress100%168 of 16853 s61 min
12JenaJENT199.8GaugeLoudon100%168 of 16853 s61 min
12J. Percy Priest Dam HeadwaterJPHT199.8GaugeDavidson100%168 of 16853 s61 min
12John Sevier SpJSST199.8GaugeHawkins100%168 of 16853 s61 min
12Harpeth River 1.7 NE Kingston SpringsKINT199.8GaugeCheatham100%168 of 16853 s61 min
12Kingston Fossil PlantKNST199.8GaugeRoane100%168 of 16853 s61 min
12East Fork Stones River 3 SW LascassasLAST199.8GaugeRutherford100%168 of 16853 s61 min
12LafayetteLFTT199.8GaugeMacon100%168 of 16853 s61 min
12Lost Creek DamLOST199.8GaugeHenderson100%168 of 16853 s61 min
12LivingstonLVGT199.8GaugeOverton100%168 of 16853 s61 min
12Lexington TvaLXNT199.8GaugeHenderson100%168 of 16853 s61 min
12McdonaldMCDT199.8GaugeBradley100%168 of 16853 s61 min
12Collins River 3 NE McMinnvilleMCGT199.8GaugeWarren100%168 of 16853 s61 min
12Duck River 2 W ManchesterMCST199.8GaugeCoffee100%168 of 16853 s61 min
12Milligan CollegeMGNT199.8GaugeCarter100%168 of 16853 s61 min
12Melton Hill DamMHTT199.8GaugeRoane100%168 of 16853 s61 min
12Duck River AT MilltownMLTT199.8GaugeMarshall100%168 of 16853 s61 min
12McMinnville 3NEMMVT199.8GaugeWarren100%168 of 16853 s61 min
12MontereyMNYT199.8GaugePutnam100%168 of 16853 s61 min
12MorrisonMRST199.8GaugeWarren100%168 of 16853 s61 min
12East Morristown RainMSTT199.8GaugeHamblen100%168 of 16853 s61 min
12West Fork Stones River 5 N MurfreesboroMUGT199.8GaugeRutherford100%168 of 16853 s61 min
12Pigeon River 1 AT Newport TNNEPT199.8GaugeCocke100%168 of 16853 s61 min
12Tennessee River AT JohnsonvilleNJNT199.8GaugeBenton100%168 of 16853 s61 min
12Tennessee River 5 S Nickajack Dam (Jasper 5S)NKJT199.8GaugeMarion100%168 of 16853 s61 min
12Nickajack Dam (Jasper 5S)NKTT199.8GaugeMarion100%168 of 16853 s61 min
12Duck River 2 NE NORMANDY DAM POOL LEVELNRMT199.8GaugeCoffee100%168 of 16853 s61 min
12Clinch River At Norris DamNRST199.8GaugeAnderson100%168 of 16853 s61 min
12Norris DamNRTT199.8GaugeAnderson100%168 of 16853 s61 min
12French Broad River 1 AT Newport TNNWPT199.8GaugeCocke100%168 of 16853 s61 min
12Emory River 0 AT Oakdale TNOAKT199.8GaugeMorgan100%168 of 16853 s61 min
12Turtletown 9WSW - Ocoee Dam 2OCBT199.8GaugePolk100%168 of 16853 s61 min
12Ocoee Dam #3OCCT199.8GaugePolk100%168 of 16853 s61 min
12Ocoee Dam #1 Tailwater at ParksvilleOCTT199.8GaugePolk100%168 of 16853 s61 min
12OrlindaORLT199.8GaugeRobertson100%168 of 16853 s61 min
12Elk River AT PelhamPELT199.8GaugeGrundy100%168 of 16853 s61 min
12Tennessee River AT Pickwick DamPICT199.8GaugeHardin100%168 of 16853 s61 min
12Pin Oak DamPIOT199.8GaugeHenderson100%168 of 16853 s61 min
12PikevillePKVT199.8GaugeBledsoe100%168 of 16853 s61 min
12Richland Creek AT PulaskiPLKT199.8GaugeGiles100%168 of 16853 s61 min
12Paris LandingPSLT199.8GaugeHenry100%168 of 16853 s61 min
12Racoon MountainRACT199.8GaugeMarion100%168 of 16853 s61 min
12Spring CityRDDT199.8GaugeRhea100%168 of 16853 s61 min
12Redbud DamREDT199.8GaugeHenderson100%168 of 16853 s61 min
12Sewee Creek 5 NE Sewee Creek Near DecaturSEET199.8GaugeMeigs100%168 of 16853 s61 min
12SpringfieldSPST199.8GaugeRobertson100%168 of 16853 s61 min
12StatesvilleSTLT199.8GaugeWilson100%168 of 16853 s61 min
12SweetwaterSWET199.8GaugeMonroe100%168 of 16853 s61 min
12Lenior City - Tellico DamTDTT199.8GaugeLoudon100%168 of 16853 s61 min
12Tellico PlainsTLPT199.8GaugeMonroe100%168 of 16853 s61 min
12Tellico River 1 E Tellico River Near Tellico PlainsTLRT199.8GaugeMonroe100%168 of 16853 s61 min
12Hurdlow 4NE - Elk RiverTMFT199.8GaugeFranklin100%168 of 16853 s61 min
12Apalachia Dam Pwr Hse Hiwassee RvrTURT199.8GaugePolk100%168 of 16853 s61 min
12Watts Bar DamWBTT199.8GaugeRhea100%168 of 16853 s61 min
12WoodburyWDBT199.8GaugeCannon100%168 of 16853 s61 min
115Clinton - Clinton RiverCCLT199.8GaugeAnderson100%168 of 16859 s61 min
115Copper HillCPRT199.8GaugePolk100%168 of 16859 s61 min
115Del RioDELT199.8GaugeCocke100%168 of 16859 s61 min
115Oak GroveOKGT199.8GaugeJefferson100%168 of 16859 s61 min
115Ocoee - ParksvillePKST199.8GaugePolk100%168 of 16859 s61 min
115PetrosPTST199.8GaugeMorgan100%168 of 16859 s61 min
115South Fork Holston River At Kingsport TnSHKT199.8GaugeSullivan100%168 of 16859 s61 min
122Nonconnah Creek Near Germantown0703220099.8GaugeShelby100%168 of 1688 min81 min
123SmyrnaMQY99.8AirportRutherford100%168 of 1689 min67 min
124Fort CampbellEOD99.8AirportMontgomery100%168 of 16810 min63 min
125NewportNPTT199.8CooperativeCocke100%7 of 72 min24 h
126Dale Hollow LakeBYDT199.8CooperativePickett100%7 of 79 min24 h
127White HouseWHST199.8CooperativeSumner100%7 of 717 min25.3 h
128Fayetteville Water PlantFYVT199.8CooperativeLincoln100%7 of 719 min24 h
129Tullahoma 4NETNET199.8CooperativeCoffee100%7 of 719 min24 h
130Water PlantTULT199.8CooperativeFranklin100%7 of 719 min26.3 h
131Fairview Bowie Nature CenterFBNT199.8CooperativeWilliamson100%7 of 721 min24 h
132Maryville 5.8 ESETN-BT-2699.8VolunteerBlount100%7 of 726 min24 h
132Johnson City 1.3 NETN-WS-3599.8VolunteerWashington100%7 of 726 min24 h
134Crossville 6.9 STN-CM-999.8VolunteerCumberland100%7 of 726 min24 h
134Knoxville 5.9 WNWTN-KX-8499.8VolunteerKnox100%7 of 726 min24 h
134Fayetteville 8.6 STN-LC-1299.8VolunteerLincoln100%7 of 726 min24 h
134Smyrna 1.8 STN-RD-13599.8VolunteerRutherford100%7 of 726 min24 h
138Manchester 6.5 ENETN-CF-3299.8VolunteerCoffee100%7 of 726 min24 h
138Henderson 2.2 SSETN-CS-799.8VolunteerChester100%7 of 726 min24 h
138Nashville 5.2 WSWTN-DV-13899.8VolunteerDavidson100%7 of 726 min24 h
138Monterey 5.6 STN-PM-4599.8VolunteerPutnam100%7 of 726 min24 h
142Readyville 2.1 NNETN-CN-1799.8VolunteerCannon100%7 of 726 min25 h
142Hohenwald 2.2 SETN-LS-399.8VolunteerLewis100%7 of 726 min25 h
144Graysville 5.5 WNWTN-BL-1899.8VolunteerBledsoe100%7 of 726 min24 h
144Adams 7.9 SWTN-MT-9599.8VolunteerMontgomery100%7 of 726 min24 h
144Carthage 8.7 NNETN-SM-199.8VolunteerSmith100%7 of 726 min24 h
147Atoka 3.2 ESETN-TP-399.8VolunteerTipton100%7 of 726 min25 h
148Humboldt 4.5 SETN-MD-4699.8VolunteerMadison100%7 of 726 min24 h
148Bethel Springs 7.5 NETN-MN-899.8VolunteerMcNairy100%7 of 726 min24 h
150Nashville 8.5 SSETN-DV-20499.8VolunteerDavidson100%7 of 726 min24 h
150Cookeville 6.5 ENETN-PM-6799.8VolunteerPutnam100%7 of 726 min24 h
150Franklin 0.5 NETN-WL-8999.8VolunteerWilliamson100%7 of 726 min24 h
153Dyersburg 7.7 ETN-DY-799.8VolunteerDyer100%7 of 726 min25 h
153Somerville 1.3 ETN-FY-599.8VolunteerFayette100%7 of 726 min25 h
153Lafayette 4.5 SETN-MC-1699.8VolunteerMacon100%7 of 726 min25 h
156Church Hill 3.4 NNETN-HK-499.8VolunteerHawkins100%7 of 726 min24 h
157Friendsville 2.3 ESETN-BT-2099.8VolunteerBlount100%7 of 726 min25 h
157Eagleville 7.1 WNWTN-WL-11299.8VolunteerWilliamson100%7 of 726 min25 h
159Louisville 3.6 ETN-BT-4999.8VolunteerBlount100%7 of 726 min24 h
160Red Boiling Springs 6.7 NNETN-CY-399.8VolunteerClay100%7 of 726 min24 h
160Middle Valley 2.3 ESETN-HL-4899.8VolunteerHamilton100%7 of 726 min24 h
160Lenoir City 1.8 NETN-LN-1799.8VolunteerLoudon100%7 of 726 min24 h
160Saint Joseph 1.9 ENETN-LR-3199.8VolunteerLawrence100%7 of 726 min24 h
160Jackson 3.0 NNWTN-MD-4499.8VolunteerMadison100%7 of 726 min24 h
160Oliver Springs 9.0 WTN-MG-1099.8VolunteerMorgan100%7 of 726 min24 h
160Lebanon 3.6 NTN-WN-9899.8VolunteerWilson100%7 of 726 min24 h
167Murfreesboro 7.9 NNWTN-RD-10099.8VolunteerRutherford100%7 of 726 min25 h
168Midway 2.3 SWTN-GN-1799.8VolunteerGreene100%7 of 726 min25 h
169ElizabethtownELZT199.8CooperativeCarter100%7 of 728 min24 h
170Berry Field/Percy Priest Lk 1WBFDT199.8CooperativeDavidson100%7 of 729 min24 h
171Lebanon 7NLNNT199.8CooperativeWilson100%7 of 729 min24 h
172City Of Lynchburg Water Treatmt PlantLYCT199.8CooperativeMoore100%7 of 729 min24 h
172PikevillePKET199.8CooperativeBledsoe100%7 of 729 min24 h
174Roan MountainRNMT199.8CooperativeCarter100%7 of 729 min24.3 h
175Pulaski Wastewater PlantPULT199.8CooperativeGiles100%7 of 738 min27 h
176SewaneeSWNT199.8CooperativeFranklin100%7 of 739 min24 h
177Bethpage 1SBETT199.8CooperativeSumner100%7 of 739 min24 h
178100 Akin Rd Somerville Tn 32068SMVT199.8CooperativeFayette100%7 of 741 min24 h
179KingsportKNGT199.8CooperativeSullivan100%7 of 760 min24 h
180Within City LimitsLKMT199.8CooperativeHamilton100%7 of 761 min24 h
181Townsend 5STNST199.8CooperativeBlount100%7 of 769 min25 h
182Water PlantNORT199.8CooperativeAnderson100%7 of 779 min24 h
183SpartaSPAT199.8CooperativeWhite100%7 of 781 min24 h
184Cookeville 4.6 WNWTN-PM-1099.8VolunteerPutnam100%7 of 785 min26 h
185Mooresburg 0.5 SETN-HK-1199.8VolunteerHawkins100%7 of 785 min24 h
185Jonesborough 2.7 SSWTN-WS-2299.8VolunteerWashington100%7 of 785 min24 h
187Harriman 4.3 SSETN-RN-999.8VolunteerRoane100%7 of 785 min25 h
188Collierville 0.5 ENETN-SH-5399.8VolunteerShelby100%7 of 785 min26 h
189Friendsville 3.6 NWTN-BT-999.8VolunteerBlount100%7 of 785 min24 h
189Hillsboro 1.7 WNWTN-CF-4099.8VolunteerCoffee100%7 of 785 min24 h
189Old Hickory 1.6 SSETN-DV-16699.8VolunteerDavidson100%7 of 785 min24 h
189Rutledge 5.3 SETN-GR-899.8VolunteerGrainger100%7 of 785 min24 h
189Huron 5.3 NNWTN-HD-1599.8VolunteerHenderson100%7 of 785 min24 h
189McMinnville 2.5 SSETN-WR-2299.8VolunteerWarren100%7 of 785 min24 h
195Green Hill 1.7 NNETN-WN-11399.8VolunteerWilson100%7 of 785 min25 h
196Seymour 5.8 NTN-KX-5899.8VolunteerKnox100%7 of 786 min25 h
197Gadsden 4.9 SSETN-MD-1099.8VolunteerMadison100%7 of 786 min24 h
197Jonesborough 2.5 SSWTN-WS-1299.8VolunteerWashington100%7 of 786 min24 h
199Midway 0.5 NTN-CN-299.8VolunteerCannon100%7 of 786 min26 h
199Millersville 1.4 NWTN-SR-8999.8VolunteerSumner100%7 of 786 min26 h
201Loudon 7.1 SETN-LN-1599.8VolunteerLoudon100%7 of 786 min27 h
202Crossville 4.7 STN-CM-3299.8VolunteerCumberland100%7 of 786 min24 h
202Fayetteville 4.0 SSWTN-LC-2499.8VolunteerLincoln100%7 of 786 min24 h
204Auburntown 0.5 NNETN-CN-2099.8VolunteerCannon100%7 of 786 min25 h
205Sneedville 9.5 WSWTN-HC-599.8VolunteerHancock100%7 of 786 min26 h
205Benton 2.3 ESETN-PK-199.8VolunteerPolk100%7 of 786 min26 h
205Ocoee 3.3 ESETN-PK-299.8VolunteerPolk100%7 of 786 min26 h
208Bell Buckle 2.0 SETN-BF-499.8VolunteerBedford100%7 of 786 min24 h
208Loudon 7.2 SETN-LN-1499.8VolunteerLoudon100%7 of 786 min24 h
208Jackson 6.1 SSETN-MD-3399.8VolunteerMadison100%7 of 786 min24 h
208Athens 0.8 NNETN-MM-1199.8VolunteerMcMinn100%7 of 786 min24 h
208Franklin 10.0 WTN-WL-10799.8VolunteerWilliamson100%7 of 786 min24 h
208Mount Juliet 2.9 WSWTN-WN-4299.8VolunteerWilson100%7 of 786 min24 h
208Lebanon 10.5 ENETN-WN-4899.8VolunteerWilson100%7 of 786 min24 h
215Winchester 0.5 WTN-FK-1599.8VolunteerFranklin100%7 of 786 min25 h
215Farragut 2.0 ESETN-KX-6399.8VolunteerKnox100%7 of 786 min25 h
217Brentwood 0.5 SSWTN-WL-1899.8VolunteerWilliamson100%7 of 786 min26 h
218Waynesboro 7.3 NTN-WY-1999.8VolunteerWayne100%7 of 786 min27 h
219Bulls Gap 0.9 SSWTN-HK-899.8VolunteerHawkins100%7 of 786 min24 h
220Cookeville 6.4 NTN-PM-5799.8VolunteerPutnam100%7 of 786 min26 h
221Clarksville 5.4 WSWTN-MT-6199.8VolunteerMontgomery100%7 of 786 min24 h
221Cookeville 2.6 NWTN-PM-5999.8VolunteerPutnam100%7 of 786 min24 h
223Holladay 4.4 NNETN-BN-499.8VolunteerBenton100%7 of 786 min24 h
223Tazewell 4.0 ESETN-CL-1499.8VolunteerClaiborne100%7 of 786 min24 h
223Hermitage 1.6 STN-DV-19999.8VolunteerDavidson100%7 of 786 min24 h
223Somerville 8.9 NTN-FY-1599.8VolunteerFayette100%7 of 786 min24 h
223Loudon 5.3 ETN-LN-1199.8VolunteerLoudon100%7 of 786 min24 h
223Lewisburg 5.1 SWTN-ML-699.8VolunteerMarshall100%7 of 786 min24 h
223Fredonia 0.5 ESETN-MT-10599.8VolunteerMontgomery100%7 of 786 min24 h
223Jamestown 9.6 WTN-PT-799.8VolunteerPickett100%7 of 786 min24 h
223Sevierville 11.8 SETN-SV-2899.8VolunteerSevier100%7 of 786 min24 h
232Rutledge 7.0 SSWTN-GR-1099.8VolunteerGrainger100%7 of 786 min25 h
232Athens 2.0 WSWTN-MM-1299.8VolunteerMcMinn100%7 of 786 min25 h
232Blountville 4.6 WNWTN-SL-2899.8VolunteerSullivan100%7 of 786 min25 h
232Green Hill 0.3 NTN-WN-1099.8VolunteerWilson100%7 of 786 min25 h
236Karns 5.4 SETN-KX-7199.8VolunteerKnox100%7 of 786 min26 h
237East Ridge 0.9 NWTN-HL-5199.8VolunteerHamilton100%7 of 786 min24 h
237Savannah 5.8 NNETN-HN-1099.8VolunteerHardin100%7 of 786 min24 h
237Byrdstown 2.8 SSWTN-PT-399.8VolunteerPickett100%7 of 786 min24 h
237Springfield 1.9 WSWTN-RB-399.8VolunteerRobertson100%7 of 786 min24 h
237Lebanon 8.4 SSWTN-WN-6699.8VolunteerWilson100%7 of 786 min24 h
242Roan Mountain 7.1 WTN-CT-299.8VolunteerCarter100%7 of 786 min26 h
243Crossville 11.3 NTN-CM-5499.8VolunteerCumberland100%7 of 786 min30 h
244Signal Mountain 2.2 NETN-HL-5099.8VolunteerHamilton100%7 of 786 min24 h
244Lawrenceburg 8.7 WNWTN-LR-2999.8VolunteerLawrence100%7 of 786 min24 h
246Cleveland 4.1 NNETN-BR-899.8VolunteerBradley100%7 of 786 min25 h
246Fairview 1.9 ENETN-WL-7599.8VolunteerWilliamson100%7 of 786 min25 h
248Petersburg 7.3 NTN-BF-1499.8VolunteerBedford100%7 of 786 min24 h
248Shelbyville 3.1 ESETN-BF-599.8VolunteerBedford100%7 of 786 min24 h
248Greeneville 3.0 STN-GN-899.8VolunteerGreene100%7 of 786 min24 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.