2000(OCT) -2001 (JUN) NWS TAUNTON GALE AND STORM MARINE WARNING STATISTICS

GALE WARNINGS

FALSE ALARM RATIO (FAR) =  20 %   

( 0 is best )                              

PROBABILITY OF DETECTION (POD) = 100 %

( 100 % is best)            

CRITICAL SUCCESS INDEX (CSI) = 78 %

( 100 % is best)           

STORM WARNINGS

FALSE ALARM RATIO (FAR) =  42 %   

( 0 is best )

PROBABILITY OF DETECTION (POD) = 88 %

( 100 % is best)

CRITICAL SUCCESS INDEX (CSI) = 45 %

( 100 % is best)

AVG LEAD TIME (ALL WARNINGS) = 19.47 hrs

DEFINITIONS

FALSE ALARM RATIO: UNVERIFIED WARNINGS 

                                                TOTAL WARNINGS

PROBABILITY OF DETECTION: WARNED EVENTS 

                                                             TOTAL EVENTS 

CRITICAL SUCCESS INDEX: WARNED EVENTS 

                                                        TOTAL EVENTS +                    

                                                       UNVER WRNGS 

GALE WARNING: Sustained and/or gusts from 34 kts to 47 kts for more than 2 hours.

STORM WARNING: Sustained and/or gusts greater than 47 kts for more than 2 hours.