Hurricane Terms - G

G

GALE WARNING: A warning of 1-minute sustained surface winds in the range 39 to 54 mph (34 to 47 knots) inclusive, either predicted or occurring not directly associated with tropical cyclones.

GEOSTATIONARY OPERATIONAL ENVIRONMENTAL SATELLITES (GOES): Family of NWS weather satellites, which orbit 22,300 miles above the earth and maintain a velocity that allows it to remain over a fixed place above the equator. Images are available to forecasters every 30 minutes.

GREENWICH MEAN TIME (GMT): The name of the twenty-four hour time scale that is used throughout the scientific and military communities. Standard Time begins at Greenwich, England, which is the Prime Meridian of Longitude. The globe is divided into twenty-four (24) time zones of 15 degrees of arc, or one hour in time apart. To the east of this meridian, time zones are numbered 1 to 12 and prefixed with a minus (-), while to the west, the time zones are also numbered 1 through 12 but prefixed with a plus (+). Other names for this time measurement are Universal Time Coordinate (UTC) and Zulu (Z).

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