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Lee Side Cyclone???
Posted: Fri Dec 14, 2007 9:13 am
by CajunMama
Lee Side cyclone was mentioned in the lake charles special weather statement. I haven't heard the term before and was hoping someone could explain it.
...ACTIVE WEATHER EXPECTED ON SATURDAY...
A LEE SIDE CYCLONE WILL FORM OVER THE TEXAS PANHANDLE LATER THIS
AFTERNOON...AND THEN MOVE NORTHEAST ACROSS OKLAHOMA TONIGHT...AND
REACH THE MISSOURI BOOTHEEL BY LATE SATURDAY MORNING. THIS
EVOLVING WEATHER SYSTEM WILL PUSH A STRONG COLD FRONT ACROSS THE
REGION ON SATURDAY.
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND AHEAD
OF THE FRONT AND ORGANIZE INTO A SQUALL LINE...THEN MOVE
SOUTHEASTWARD THROUGH SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA
SATURDAY MORNING. THESE STORMS WILL CONTINUE SOUTHEASTWARD AND
EVENTUALLY EXIT SOUTH CENTRAL LOUISIANA BY EARLY SATURDAY EVENING.
A FEW OF THESE STORMS MAY CONTAIN DAMAGING WINDS AND VERY HEAVY
RAINFALL. IN ADDITION...VERY GUSTY WINDS OVER 40 MPH ARE EXPECTED
OVER THE COASTAL WATERS...AND A GALE WARNING MAY BE NECESSARY ON
SATURDAY EVENING.
Posted: Fri Dec 14, 2007 9:27 am
by JonathanBelles
I havent heard of that term before either. the weather sounds interesting though.
Posted: Fri Dec 14, 2007 9:35 am
by CajunMama
I think i mighta sorta answered my question. I checked out the nws glossary
Leeside Low
Extratropical cyclones that form on the downwind (lee) side of a mountain chain. In the United States, they frequently form on the eastern side of the Rockies and Sierra Nevadas.
Re: Lee Side Cyclone???
Posted: Mon Dec 24, 2007 12:30 pm
by Category 5
Thats very interesting, I'd never heard that term in my life.
Re: Lee Side Cyclone???
Posted: Mon Dec 24, 2007 1:36 pm
by Aslkahuna
They go by Different local names, but leeside Lows in the Lee of the Rockies generally give rise to major storms in the Plains and Midwest-in fact, the most recent one that has been going the past couple of days was a leeside Low development that resulted from the impulse that came across northern AZ last Friday. The term Leeside Low has been around since before I became a forecaster in 1962-LONG before.
Steve
Posted: Sun Jan 06, 2008 3:24 pm
by wall_cloud
the air flow ove the mountains (for lack of using confusing scientific jargon) induces pressures to fall over the high Plains (east of the mountain ranges). This results in usually weak...but sometimes quite potent...surface lows. You may hear them called lee troughs, lee lows, or lee cyclones, but they are all basically the same. I usually refer to it as a cyclone once a close circulation develops...but I call it a trof if the circulation is not complete.
we deal with them practically every shift since they develop right in our own backyard.
Re: Lee Side Cyclone???
Posted: Sun Jan 06, 2008 3:39 pm
by Aslkahuna
Yes they do and those Lee siders that develop in the Panhandles can give rise to an array of Winter weather misery downstream and in the Spring-well, you know.
Steve
Posted: Sun Jan 06, 2008 4:01 pm
by CajunMama
Thank you steve and wall_cloud. You two rock!
I appreciate y'all answering my question in every day language that everyone can understand