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January 2013 General Discussion


Chicago Storm

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Here's another look at the smoke plume using the dual-pol capabilities of the LOT WSR-88D. Using correlation coefficient, we can get a sense of how similar the horizontal and vertical pulses are behaving from pulse to pulse. Generally very high values of CC are from meteorological targets, and very low values of CC are from non-meteorological targets. We see here that the plume is made up of very low values of CC, so we can confirm that the returns on radar are not meteorological.

 

Plus, KMDW reported a FEW layer of smoke (FU) at 500 feet, providing further evidence. KMDW 230451Z 30008KT 10SM FEW005 OVC120 M12/M21 A3033 RMK AO2 SLP295 FU FEW005 T11171206

 

http://imgur.com/9f7NEeL'>9f7NEeL.png

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RECORD EVENT REPORT

NATIONAL WEATHER SERVICE NORTHERN INDIANA

727 PM EDT TUE JAN 22 2013

...RECORD LOW DAILY MAXIMUM TEMPERATURE SET AT SOUTH BEND...

THE HIGH TEMPERATURE OF 9 DEGREES TODAY WAS THE COLDEST HIGH FOR

THIS DATE AT SOUTH BEND ON RECORD. THIS BREAKS THE PREVIOUS RECORD

LOW MAXIMUM TEMPERATURE FOR JANUARY 22ND OF 10 DEGREES SET IN 1961.

THE HIGH TEMPERATURE OF 9 DEGREES TODAY IS ALSO THE COLDEST HIGH

TEMPERATURE FOR ANY DAY AT SOUTH BEND SINCE JANUARY 16TH 2009...WHEN

THE HIGH TEMPERATURE WAS -2 DEGREES.

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Ottawa has been under quality returns for quite a while now.

 

would you rather have a quality 4" LES event this week or keep piling on some of the futility records.  That's a tough one for me.. I'd prob hit the futility seeing its most likely going to be down the sewer drains early next week anyways.

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would you rather have a quality 4" LES event this week or keep piling on some of the futility records.  That's a tough one for me.. I'd prob hit the futility seeing its most likely going to be down the sewer drains early next week anyways.

 

4" is right on the border of nuisance and worthwhile.  I'd probably take the 4" of fluff (would pass on 4" of 8:1) Either way, 4" of LES is super rare so it probably won't happen.

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4" is right on the border of nuisance and worthwhile. I'd probably take the 4" of fluff (would pass on 4" of 8:1) Either way, 4" of LES is super rare so it probably won't happen.

You might get the best of both worlds...accumulating snow in your backyard with nothing to show for it at ORD.

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