Weather Glossary - J
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Jet max(Speed Max, Jet Streak) A point or area of relative maximum wind speeds within a jetstream. |
Jet streak |
JetstreamRelatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds. The position and orientation of jetstreams vary from day to day. General weather patterns (hot/cold, wet/dry) are related closely to the position, strength and orientation of the jetstream (or jetstreams). A jetstream at low levels is known as a low level jet. |
JTWCJoint Typhoon Warning Center. The JTWC issues warnings and forecasts for tropical systems across the Pacific and Indian Oceans. |
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Weather News
Broome swamped in wettest December on record
16:33 EDT
A tropical low pressure system has combined with Cyclone Yvette to dump more than 200 millimetres of rain on Broome.
Detailed Christmas Day forecast
12:21 EDT
Intense heat, thunderstorms, flooding rain and damaging winds are all on the cards for Christmas Day this year.
SA Government declares 'code red' for homeless during hot spell, shelters to stay open longer
12:08 EDT
South Australia's homeless services will be boosted over the Christmas period as a result of forecast extreme heat over the next few days.
