MODIFIED SURF INDEXCALCULATION

SURFOB/SURFCST:

DATE/TIME

BEACH

SIGNIFICANT BREAKER HEIGHT (ALFA)

FEET

SECONDS

BREAKER PERIOD (CHARLIE)

BREAKER TYPE (DELTA)

% SPILLING

% PLUNGING

% SURGING

LITTORAL CURRENT (FOXTROT)

KNOTS

REL WIND (HOTEL)

KNOTS

DEG ONSHORE/

OFFSHORE

SECONDARY WAVE HEIGHT (HOTEL)

FEET

MODIFIED SURF INDEX

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• This is the data that is required to calculate the MSI. These elements will be listed in all SUROBS, SURFCST, and AOA Forecasts.