Roanoke River at Halifax

Ranking Statistics

247 score97.5of 100

North Carolina median

95.0the median score of 2,255 stations

Scoring higher

819stations in North Carolina

Sharing its score

7ranks 820 to 826

Points deducted

2.52.3 arrival, 0.2 reports received

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; North Carolina median 100.0, 100.0, 100.0

Next above

CUWN7rank 820; ahead on reports received 100% against 99.4%

Next below

PLGN7rank 823; behind on median arrival 21 min 17 s against 21 min 18 s

Sharing its rank

1other stations, equal on every measure

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 pointsNorth Carolina median 92.6167 of 168 scheduled reports received in 7 days
2. Arrivalweight 1077.47.7 of 10 pointsNorth Carolina median 95.2half its reports arrived within 21 min
3. Continuityweight 10100.010.0 of 10 pointsNorth Carolina median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianNorth Carolina median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianNorth Carolina median 100.0-
6. Forecast checkweight 10-10.0 of 10 points, at the medianNorth Carolina median 100.0-

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