¥0-12 hrs: Can track
individual severe storms
¥12-48 hrs: Can predict daily weather
changes well, including
regions threatened by severe weather.
¥3-5 days: Can predict major winter
storms, excessive heat and
cold snaps. Rainfall forecasts are less accurate.
¥6-15 days: Can predict average temp and
rain over 5 day period
well, but daily changes are not forecast well.
¥30-90 days: Slight skill for average
temp and rainfall over period.
Forecasts use combination of model forecasts and statistical relationships (e.g. El
Nino).
¥90-360 days:
ÒSlightÓ skill for SST anomalies.