While we experience many thunderstorms, more intense thunderstorms are referred to as severe thunderstorms. Severe thunderstorms can produce damaging wind gusts, large hail, tornadoes and heavy rain ...

RAINFALL may be for a period greater than 24 hours. The period, in days, will then be placed in the column headed "days". SEAS: C Calm SM Smooth SL Slight M Moderate R Rough VR Very Rough H High VH ...