Alert Station

Ranking Statistics

247 score79.8of 100

Maryland median

89.0the median score of 736 stations

Scoring higher

550stations in Maryland

Sharing its score

1no other station

Points deducted

20.217.9 reports received, 0.8 forecast check, 0.7 continuity, 0.5 arrival, 0.2 accuracy

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Maryland median 99.0, 100.0, 92.1

Next above

MD141rank 550; ahead on 247 score 79.9 against 79.8

Next below

GW0092rank 552; behind on 247 score 79.8 against 79.7

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 3548.817.1 of 35 pointsMaryland median 82.198 of 201 scheduled reports received in 7 days
2. Arrivalweight 1094.89.5 of 10 pointsMaryland median 94.0half its reports arrived within 13 min
3. Continuityweight 1092.69.3 of 10 pointsMaryland median 100.0longest silence 3.2 h, on a schedule of one report every 50 min
4. Accuracyweight 20-19.8 of 20 points, at the medianMaryland median 99.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianMaryland median 100.0-
6. Forecast checkweight 10-9.2 of 10 points, at the medianMaryland median 92.1-

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