Low Level Jet (LLJ)

Science / Weather / Low Level Jet (LLJ): Strong winds that are concentrated in relatively narrow bands in the lower part of the atmosphere. It is often amplified at night. The southerly wind over the US Plains states during spring and summer is a notable example.

Other Words for Level

Level Adjective Synonyms: even, smooth, plane, uniform, plain, flat, flush, straight, true
Level Noun Synonyms: horizontal, prone, supine
Level Verb Synonyms: aim, point, draw a bead, direct, train, focus
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Other Words for Low

Low Adjective Synonyms: short, squat, little, small, stubby, stumpy, stunted, low-lying
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Mean Lower Low Water (MLLW)

Science / Tides and Currents / Mean Lower Low Water (MLLW): A tidal datum. The average of the lower low water height of each tidal day observed over the National Tidal Datum Epoch. For stations with shorter series, comparison of simultaneous observations with MORE

Mean Low Water Springs (MLWS)

Science / Tides and Currents / Mean Low Water Springs (MLWS): A tidal datum. Frequently abbreviated spring low water. The arithmetic mean of the low water heights occurring at the time of spring tides observed over the National Tidal Datum Epoch. It is usually d MORE

Mean Low Water Line (MLWL)

Science / Tides and Currents / Mean Low Water Line (MLWL): The line on a chart or map which represents the intersection of the land with the water surface at the elevation of mean low water. MORE

Mean Low Water (MLW)

Science / Tides and Currents / Mean Low Water (MLW): A tidal datum. The average of all the low water heights observed over the National Tidal Datum Epoch. For stations with shorter series, comparison of simultaneous observations with a control tide stat MORE

Mean Lower Low Water Line (MLLWL)

Science / Tides and Currents / Mean Lower Low Water Line (MLLWL): The line on a chart or map which represents the intersection of the land with the water surface at the elevation of mean lower low water. MORE

Mean River Level

Science / Tides and Currents / Mean River Level: A tidal datum. The average height of the surface of a tidal river at any point for all stages of the tide observed over the National Tidal Datum Epoch. It is usually determined from hourly height read MORE

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