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September 2011 General Discussion/Obs


Chicago Storm

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All Door County state parks are closed until at least Monday. I figured there would be some issues in Door County, what with the nearly hurricane force wind gusts. I'm glad I'm not vacationing there this weekend. It will be thanksgiving this year, which opens up the possibility of some significant snow either on the ground or in the forecast.

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After spending most of the evening in the 50s the temp is tanking now. Should be the coldest night of the season. Coldest so far has been 36.

Interesting temp fluctuations here this evening. As soon as I posted the above the temp jumped back up from 43 to 46. No cloud cover. Must have been a shallow inversion mixing out.

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PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN

258 AM CDT SAT OCT 1 2011

...PUBLIC INFORMATION STATEMENT...

DRIEST SEPTEMBER ON RECORD SET AT MINNEAPOLIS/ST PAUL

INTERNATIONAL AIRPORT

A NEW RECORD LOW PRECIPITATION TOTAL FOR THE MONTH OF SEPTEMBER

WAS SET WITH JUST 0.36 INCHES OF PRECIPITATION RECORDED THIS

SEPTEMBER. THE PREVIOUS RECORD DRIEST SEPTEMBER OCCURRED IN 1940

WITH 0.41 INCHES RECORDED THAT SEPTEMBER.

...BELOW IS AN UPDATED LISTING OF THE FIVE DRIEST SEPTEMBERS RECORDED

AT MSP...

YEAR PRECIPITATION TOTAL (INCHES)

---------------------------------------

2011 0.36

1940 0.41

1952 0.42

2009 0.46

1969 0.49

...BELOW IS A LISTING OF OTHER LOCATIONS THAT ALSO SAW VERY LOW

PRECIPITATION TOTALS IN SEPTEMBER 2011...

LOCATION PRECIPITATION TOTAL (INCHES)

---------------------------------------

REDWOOD FALLS 0.13

CHANHASSEN (NWS OFFICE) 0.26

FLYING CLOUD AIRPORT 0.28

MANKATO 0.32

ST. PAUL 0.47

CRYSTAL 0.48

RED WING 0.58

ST. CLOUD 0.74

ALEXANDRIA 0.87

$

SPD

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Yeah overall I'm pretty happy with this September. It's usually the most uneventful month here (IMHO) anyway. There were some interesting features this year. The run at 100 early in the month, the wicked cutoff low regeneration, and the most impressive winds of the season in the form of gradient winds. :guitar:

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September 2011 stats for LAF.

Average mean temperature: 64.4º (-1.8º)

Average high temperature: 73.6º (-4.2º)

Average low temperature: 55.1º (+0.6)

Highest max temperature: 98º on Sept 2nd

Lowest max temperature: 57º on Sept 27th

Highest min temperature: 73º on Sept 1st

Lowest min temperature: 42º on Sept 15th

Total precipitation: 3.77" (+1.11")

Greatest 24 hour precipitation: 0.85" on Sept 25-26th

Days with a trace or more precipitation: 19

Days with 0.10" or more precipitation: 9

Days with 0.50" or more precipitation: 2

Highest max wind gust: 49MPH on Sept 29th

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