Jet Streaks ?

[Jon Miller]

What do you look for in finding a jet streak on the 200/250 mb upper air map ? Is it the portion of the jet stream that's 50 kts or greater or is there more to it then that ? Thanks for any helpfull info.

Jon Miller

[Robert Dewey]

I just look for an area of higher winds embedded within the general jet stream, not a specific value. If there is a generally broad area of 100knt winds at whatever height, and there is an embedded area of 130knts, that would be a jet streak... I generally consider it a "streak" if it's more than 100 miles long and 50 miles wide. Anything smaller than that, and I consider a jet maximum/local jet max.

[mikegeukes]

A couple of links for more information about jet streaks,

JET STREAKS
http://ww2010.atmos.uiuc.edu/(Gh)/guides/m...pa/jetstrk.rxml (http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cyc/upa/jetstrk.rxml)

JET STREAK WIND AND JET STREAK MOVEMENT
http://www.theweatherprediction.com/habyhints/256/

Mike