Mississippi River at Memphis

Ranking Statistics

247 score62.4of 100

Tennessee median

97.0the median score of 1,019 stations

Scoring higher

1,001stations in Tennessee

Sharing its score

1no other station

Points deducted

37.620.0 accuracy, 15.0 instrument checks, 2.2 arrival, 0.2 reports received, 0.2 forecast check

Counted at the median

Forecast checknot measured at this station; Tennessee median 98.3

Next above

GW4642rank 1,001; ahead on 247 score 62.5 against 62.4

Next below

GW7626rank 1,003; behind on 247 score 62.4 against 62.0

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 3599.434.8 of 35 pointsTennessee median 98.8167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1078.37.8 of 10 pointsTennessee median 100.0half its reports arrived within 21 min
3. Continuityweight 10100.010.0 of 10 pointsTennessee median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 200.00.0 of 20 pointsTennessee median 100.0its temperature against the airport station KM01, 5.4 miles away, over 163 readings: typical difference 9.4 °F beyond a steady offset of -14.1 °F
5. Instrument checksweight 150.00.0 of 15 pointsTennessee median 100.044 of 163 readings failed their check against its reference station
6. Forecast checkweight 10-9.8 of 10 points, at the medianTennessee median 98.3-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.