2000-2001 WINTER WEATHER VERIFICATION STATISTICS
(Through February 25, 2001)

WINTER STORM WATCHES:

Number of Watches issued: 113
Watches with an event: 59
Watches without an event: 54
Events without a Watch: 0
Events 59
Average Lead Time: 41 hours

WINTER STORM WARNINGS:

Number of Warnings issued: 97
Warnings with an event: 59
Warnings without an event 38
Events without a Warning: 0
Events 59
Average Lead Time: 20 hours

WINTER WEATHER ADVISORIES:

Number of Advisories issued: 245
Advisories with an event: 203
Advisories without an event: 42
Events without an Advisory: 7
Events: 210
Average Lead Time: 12 hours

HIGH WIND WATCHES:

Number of Warnings issued: 43
Watches with an event: 28
Watches without an event: 15
Events without a Watch: 25
Events: 53
Average Lead Time: 21 hours

HIGH WIND WARNINGS:

Number of Warnings issued: 77
Warnings with an event: 50
Warnings without an event: 27
Events without a Warning: 3
Events: 53
Average Lead Time: 11 hours

WIND ADVISORIES:

Number of Advisories issued: 199
Advisories with an event: 157
Advisories without an event: 42
Events without an Advisory: 9
Events: 166
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)
48% 39% 17% 35% 36% 21%
POD
(100% is best)
100% 100% 97% 53% 94% 95%
CSI
(100% is best)
52% 61% 81% 41% 62% 75%