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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 5 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 station, ranked

RankStationScorePartsNetworkCountyReceivedReportsArrives inLongest silence
1,001Citizen station GW4642GW464262.5CitizenCarroll20.9%422 of 2,01617 s3.6 h
1,002Mississippi River AT MemphisMEMT162.4GaugeShelby99.4%167 of 16821 min2 h
1,003Citizen station GW7626GW762662.0CitizenTipton20.4%413 of 2,01617 s3.6 h
1,004Citizen station GW7820GW782062.0CitizenLawrence20.2%51 of 25224 s42.8 h
1,005Citizen station FW2814FW281461.9CitizenDickson17.8%45 of 25221 s36.8 h
1,006Citizen station GW7819GW781961.4CitizenLawrence18.7%63 of 33622 s42 h
1,007Citizen station GW1238GW123861.2CitizenHamilton20.2%408 of 2,01618 s3.6 h
1,008Citizen station GW3945GW394560.8CitizenSumner20.4%412 of 2,01617 s3.6 h
1,009Citizen station GW5415GW541560.8CitizenMcMinn19.7%398 of 2,01617 s5.6 h
1,010Citizen station KB4UTZKB4UTZ60.7CitizenBlount33.0%111 of 33619 s2.5 days
1,011Citizen station GW6025GW602560.6CitizenShelby20.3%411 of 2,01619 s3.6 h
1,012Citizen station GW5883GW588359.7CitizenRobertson20.0%405 of 2,01617 s3.6 h
1,013Fletcher Creek At Fletcher Creek At BartlettMPHT158.8GaugeShelby17.2%29 of 16820 min5.5 days
1,014Citizen station K5VPK5VP58.7CitizenHenry11.1%187 of 1,68017 s24.2 h
1,015Citizen station GW5607GW560758.4CitizenObion20.3%411 of 2,01618 s3.7 h
1,016Fletcher Creek At Sycamore View Road At Memphis0703169258.2GaugeShelby16.6%28 of 16822 min5.9 days
1,017Citizen station GW5803GW580357.9CitizenRhea20.2%409 of 2,01619 s3.6 h
1,018Citizen station GW4546GW454657.5CitizenLincoln20.5%415 of 2,01618 s3.6 h
1,019Old HickoryNSHT151.3CooperativeWilson8.3%14 of 1682.3 h23 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.