1999-2000 WINTER WEATHER VERIFICATION STATISTICS

WINTER STORM WATCHES:

Number of Watches issued: 101
Watches with an event: 34
Watches without an event: 67
Events without a Watch: 21
Events 55
Average Lead Time: 25 hours

WINTER STORM WARNINGS:

Number of Warnings issued: 80
Warnings with an event: 42
Warnings without an event 38
Events without a Warning: 14
Events 55
Average Lead Time: 10 hours

WINTER WEATHER ADVISORIES:

Number of Advisories issued: 160
Advisories with an event: 80
Advisories without an event: 80
Events without an Advisory: 6
Events: 86
Average Lead Time: 6 hours

HIGH WIND WATCHES:

Number of Warnings issued: 83
Watches with an event: 15
Watches without an event: 67
Events without a Watch: 2
Events: 17
Average Lead Time: 9 hours

HIGH WIND WARNINGS:

Number of Warnings issued: 71
Warnings with an event: 15
Warnings without an event: 56
Events without a Warning: 2
Events: 17
Average Lead Time: 1 hours

WIND ADVISORIES:

Number of Advisories issued: 186
Advisories with an event: 123
Advisories without an event: 63
Events without an Advisory: 45
Events: 168
Average Lead Time: 6 hours

Abbreviations are as follows: Winter Storm Watch (WSA), Winter Storm Warning (WSW), Winter Weather Advisory (WWA), High Wind Watch (HWA), High Wind Warning (HWW), Wind Advisory (WAD), False Alarm Ratio (FAR), Probability of Detection (POD), Critical Success Index (CSI)

WSA WSW WWA HWA HWW WAD
FAR
(0 is best)
66% 48% 50% 81% 79% 34%
POD
(100% is best)
64% 76% 93% 88% 88% 78%
CSI
(100% is best)
28% 45% 48% 18% 21% 53%