Forecast discussion nomenclature question

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mrvogt
Junior Member
Posts: 6
Joined: Tue Nov 25, 2003 4:00 am
Location: KS

Forecast discussion nomenclature question

Post by mrvogt »

As a hobby weather enthusiast, I often read the forecast discussions to gain more insight on the current wx situation. In the last couple of days I've been seeing the term "trowal" or "trowal axis" and am not quite sure what it means. Here it is in this morning's discussion context:

"OF CONSIDERABLE INTEREST IS 600-MB TROWAL DEVELOPING OVER ERN OK"

Also, anyone know of good web sites where I can view isentropic analysis maps?

Thanks for any info!
Michael

Mike Deason
Junior Member
Posts: 9
Joined: Wed Nov 26, 2003 12:10 am
Location: Grand Island, NE

Post by Mike Deason »

TROWAL stands for "trough of warm air aloft". There's pretty good web based presentations on trowals as well as isentropic analysis at:

TROWAL Identification (Lindstrom, Bachmeier, Martin)
http://www.cira.colostate.edu/ramm/visit/trowal.html

Isentropic Analysis (Moore)
http://meted.ucar.edu/isen_ana/index.htm

Heavy Banded Snow (Moore)
http://meted.ucar.edu/norlat/bandedsnow/

Winter Meteorological Processes in the Atmosphere (NWS Louisville)
http://www.crh.noaa.gov/lmk/soo/docu/forcing1.htm

As for analysis maps, here's a site:

College of DuPage
http://weather.cod.edu/analysis/analysi ... ropic.html

Regards,

Mike

mrvogt
Junior Member
Posts: 6
Joined: Tue Nov 25, 2003 4:00 am
Location: KS

Post by mrvogt »

Great information, thanks!

Michael

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