Weather terms starting with G

130 terms

101. Ground Clutter A pattern of radar echoes from fixed ground targets (buildings, hills, etc.) near the radar.
102. Ground Fog (abbrev. GF) Fog produced over the land by the cooling of the lower atmosphere as it comes in contact with the ground.
103. Ground Heat Flux The flux of heat from the ground to the earth's surface; a component of the surface energy budget.
104. Ground receive sites A satellite dish and associated computer which receives signals from the GOES satellite, decodes the information, and transmits it to a another site for…
105. Ground Stroke The current that propagates along the ground from the point where a direct stroke of lightning hits the ground.
106. Ground Water Water that flows or seeps downward and saturates soil or rock, supplying springs and wells.
107. Ground Water Divide A line on a water table where on either side of which the water table slopes downward.
108. Ground Water Flow Streamflow which results from precipitation that infiltrates into the soil and eventually moves through the soil to the stream channel.
109. Ground Water Hydrology The branch of hydrology that specializes in ground water; its occurrence and movements; its replenishment and depletion; the properties of rocks that…
110. Ground Water Outflow That part of the discharge from a drainage basin that occurs through the ground water.
111. Ground Water Overdraft Pumpage of ground water in excess of safe yield.
112. Ground Water Runoff That part of the runoff which has passed into the ground, has become ground water, and has been discharged into a stream channel as spring, or seepage…
113. Grounded ice Ice that has run aground or is contact with the ground underneath it.
114. Group Velocity The speed at which a particular wave front or swell train advances.
115. Grout Curtain A barrier produced by injecting grout into a vertical zone, usually narrow (horizontally), and in the foundation to reduce seepage under a dam.
116. Growing Degree Day The number of degrees that the average temperature is above a baseline value. For example, 40 degrees for canning purposes; 45 degree for potatoes; and 50…
117. Growing Season The period, often the frost-free period, during which the climate is such that crops can be produced.
118. Growler Similar to a bergy bit, but smaller, extending less than 1 meter above the sea surface and occupying an area of 20 square meters or less.
119. GRT great
120. GRTST Greatest
121. GSP On a buoy report, maximum 5-second peak gust during the measurement hour, reported at the last hourly 10-minute segment.
122. GST On a buoy report, peak 5 or 8 second gust speed (m/s) measured during the eight-minute or two-minute period.
123. GSTY Gusty
124. GTR Greater
125. Gulf Stream Warm water current extending from the Gulf of Mexico and Florida up the U.S. east coast then east northeast to Iceland and Norway.
126. Gunge Slang for anything in the atmosphere that restricts visibility for storm spotting, such as fog, haze, precipitation (steady rain or drizzle), widespread…
127. Gust (Abbrev. G) - A rapid fluctuation of wind speed with variations of 10 knots or more between peaks and lulls.
128. Gust Front The leading edge of gusty surface winds from thunderstorm downdrafts; sometimes associated with a shelf cloud or roll cloud.
129. Gustnado (or Gustinado) - [Slang], gust front tornado. A small tornado, usually weak and short-lived, that occurs along the gust front of a thunderstorm.
130. Gyres Oceanic current systems of planetary scale driven by the global wind system.