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May 2012 General Discussion


Chicago Storm

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I get back into the 60s on Wednesday, so that will be nice. Gotta keep those Hudson Bay highs away!

While keeping those Hudson Bay highs away will help, the really big fish to fry will be that darn Greenland High.

Until that goes away, we might as well get used to Omega Blocks and troughy weather.

nao.sprd2.gif

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Interesting read from the 26th afternoon AFD from ARX, they mentioned the MJO several times during the last few months.

LONG TERM...SUNDAY THROUGH THURSDAY

345 PM CDT THU APR 26 2012

THE MODELS CONTINUE TO STRUGGLE WITH THEIR 500 MB FLOW. THIS

MAINLY A RESULT OF A MADDEN JULIAN OSCILLATION MOVING EAST

THROUGH THE EASTERN INDIAN OCEAN. THIS HAS RESULTED IN POOR RUN TO

RUN CONSISTENCY AND VERY LOW FORECAST CONFIDENCE. AS A

RESULT...MADE NO CHANGES AT ALL TO THE ALL BLEND GRIDS.

WHILE THE DAY TO DAY MODELS HAVE BEEN INCONSISTENT...THE COUPLED

FORECAST SYSTEM VERSION 2 MODEL AS BEEN CONSISTENTLY SHOWING

TEMPERATURES AVERAGING ABOVE NORMAL DURING THE FIRST TEN DAYS OF

MAY...AND IT DOES SHOW SKILL FOR THIS TIME PERIOD...SO A BIT MORE

CONFIDENT THAT WE LIKELY SEE AVERAGE ABOVE NORMAL TEMPERATURES

FOR THIS TIME PERIOD.

The CPC is showing this:

CPC Temps:

610temp.new.gif

Precip:

610prcp.new.gif

How often do you see that much confidence with above normal temps, and above normal precip??....Looks like a very active pattern setting up.

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Just like Summer 2010. Hot and stormy with a -NAO. It is funny because conventional wisdom says -NAO means a chill. But not always.

Geos

I'm not sure a -AO would have helped this past winter.

Probably not. MJO and NAO messed this winter up, I think.

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Just like Summer 2010. Hot and stormy with a -NAO. It is funny because conventional wisdom says -NAO means a chill. But not always.

Geos

I'm not sure a -AO would have helped this past winter.

A -NAO can mean different things at different times of year as the wavelengths change.

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