Weather on the Web
|Region||Wind Speed and/or Sea height|
There is no precise or legal definition of a small craft. Any vessel that may be adversely affected by Small Craft Advisory criteria should be considered a small craft.
(Maine to South Carolina)
|25-33 knots (except 20-25 knots, lower threshold area dependent, to 33 knots for harbors, bays, etc.) and/or ≥5-7 feet, area dependent||
A Small Craft Advisory may also be issued when sea or lake ice exists that could be hazardous to small boats.
|22-33 knots and/or ≥4 feet|
|Alaska||23-33 knots and/or ≥7 feet, area dependent|
(Texas to Georgia)
|20-33 knots and/or ≥7 feet (expected for more than 2 hours)|
|Pacific Coast||21-33 knots and/or >10 feet (or wave steepness values exceeding local thresholds)|
|25-33 knots and/or ≥10 feet|
Northern Mariana Islands
|22-33 knots and/or ≥10 feet|
|All Regions||Issued for winds of 34-47 knots.|
|All Regions||Issued for winds ≥48 knots...except winds associated with a tropical cyclones.
For winds associated with a tropical cyclones, Storm Warning means winds of 48-63 knots.
|All Regions||Issued for winds ≥64 knots associated with a tropical cyclone.|
NOTE #1: A SPECIAL MARINE WARNING is issued whenever a severe local storm or strong wind of brief duration is imminent and is not covered by existing warnings or advisories. No visual displays will be used in connection with the Special Marine Warning Bulletin; boaters will be able to receive these special warnings by keeping tuned to a NOAA Weather Radio station or to Coast Guard and commercial radio stations that transmit marine weather information.
NOTE #2: A HURRICANE WATCH is an announcement issued by the National Weather Service via press and television broadcasts whenever a tropical storm or hurricane becomes a threat to a coastal area. The "Hurricane Watch" IS NOT a warning, rather it indicates that the hurricane is near enough that whomever is in the area covered by the "Watch" should listen for subsequent advisories and be ready to take precautionary action should hurricane warnings be issued.