Subj : Wx Terms (J)
To   : All
From : Daryl Stout
Date : Sat Nov 11 2017 12:04 am

January Thaw
A period of mild weather popularly supposed to recur each year in late
January.

Jet
A fast-moving wind current surrounded by slower moving air.

Jet Max
(or Jet Streak) A point or area of relative maximum wind speeds within a
jet stream.

Jet Streak
Same as Jet Max; a point or area ("streak") of relative maximum wind
speeds within a jet stream.

Jet Stream
(abbrev. JSTR) Relatively strong winds concentrated in a narrow stream
in the atmosphere, normally referring to horizontal, high-altitude
winds. The position and orientation of jet streams vary from day to
day. General weather patterns (hot/cold, wet/dry) are related closely
to the position, strength and orientation of the jet stream (or jet
streams). A jet stream at low levels is known as a low-level jet.

Jet Stream Cirrus
A loose term for filamentous cirrus that appears to radiate from a point
in the sky, and exhibits characteristics associated with strong vertical
wind shear, such as twisted or curved filaments.

Jet Wind Speed Profile
A vertical wind speed profile characterized by a relatively narrow
current of high winds with slower moving air above and below. A large
wind (speed) shear occurs above and below the jet axis.

Jetty
In hydrologic terms, a structure (e.g.; a pier, or mole of wood or
stone) extending into a sea, lake, or river to influence the current
or tide or to protect a harbor.

JMA
Japanese Meteorological Agency

Jokulhlaup
In hydrologic terms, an Icelandic term meaning glacier dammed lake
outburst flood.

JSTR
Jet Stream - Relatively strong winds concentrated in a narrow stream
in the atmosphere, normally referring to horizontal, high-altitude
winds. The position and orientation of jet streams vary from day to
day. General weather patterns (hot/cold, wet/dry) are related closely
to the position, strength and orientation of the jet stream (or jet
streams). A jet stream at low levels is known as a low-level jet.

Juvenile Water
In hydrologic terms, water formed chemically within the earth and
brought to the surface in intrusive rock.

J\/kg
Joules per kilogram, unit commonly used to represent CAPE and CIN.


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