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September 2011 General Discussion/Obs


Chicago Storm

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First frost highly likely Thursday Night (possibly Wed night), Freeze, possible, but more likely just to my north.

GRR

.LONG TERM...(410 PM EDT MON SEP 12 2011)

(THURSDAY THROUGH MONDAY)

FORECAST CONCERNS DEAL WITH A FREEZE POTENTIAL AND WIDESPREAD FROST

THURSDAY NIGHT.

WE/LL BE WELL INTO THE COLD AIR ON THURSDAY. H8 TEMPS AROUND -1C

THURSDAY WILL RESULT IN HIGH INSTABILITY OVER THE LAKE. THAT WOULD

FREQUENTLY RESULT IN LAKE EFFECT SHOWERS. ANTICYCLONIC FLOW IN THE

BOUNDARY LAYER WILL MITIGATE THE STRONG SHORT WAVE MOVE ACROSS NRN

LWR AND THE UP. MOISTURE IS ALSO LIMITED. THIS LEADS ME TO BELIEVE

THAT MOST OF THE CWA WILL REMAIN DRY EXCEPT FOR PERHAPS THE

NORTHWEST WHERE MOISTURE FROM THE LAKE MAY BE MORE OF A PLAYER. ALSO

EXPECT TO SEE QUITE A BIT OF STRATOCU...BUT PROBABLY NOT OVERCAST.

HIGHS WELL BELOW AVERAGE IN THE MID 50S ARE EXPECTED THURSDAY.

AS THE UPPER WAVE MOVES EAST AND THE HIGH SETTLES OVER MICHIGAN

SKIES WILL CLEAR THURSDAY NIGHT. WINDS WILL DIMINISH AND TEMPS WILL

FALL QUICKLY. IT/S VERY POSSIBLE WE/LL SEE LOWS IN THE 20S ACROSS

THE US-10 CORRIDOR THURSDAY NIGHT AND LOWER TO MID 30S OVER THE REST

OF THE NRN 1/2 OF THE CWA. WIDESPREAD FROST IS EXPECTED NORTH OF

I-96 AND A FREEZE WARNING MAY BE NEEDED OVER THE FAR NRN CWA.

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I think the best shot for temps near or below freezing thursday morning is going to be along hwy 20 and northward in IA/WI/MN, possibly down into extreme northwest IL.

Also looks like some of those areas and further eastward could do it again friday morning looking at the GFS.

Over/under time.

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LOT

TEMPS THROUGH THE REMAINDER OF

THE WORK WEEK WILL BE WELL BELOW NORMAL WITH LOW TEMPS EVEN

DROPPING INTO THE 30S ACROSS NORTHERN ILLINOIS WEDNESDAY NIGHT AND

THURSDAY NIGHT. THESE LOWS WILL BE GETTING SCARILY CLOSE TO THE

LOWER 30S MARK...WITH FROST ISSUES POSSIBLE. ALTHOUGH FEEL IF THIS

WERE TO OCCUR...BETTER CHANCES FOR FROST FOR NORTHERN ILLINOIS

WOULD NOT COME UNTIL THURSDAY NIGHT WHEN A BUILDING RIDGE OF HIGH

PRESSURE TO THE WEST FINALLY GETS INTO A BETTER LOCATION FOR FLOW

TO REALLY DROP OFF.

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Not a half hour after I ventured outside, and noticed a smoky, smoggy scene and smell, I read MKX's update which mentioned the Pagami Creek Fire, which apparently occurred several weeks ago, advecting its smoke plume into S Wisconsin.

You mean started several weeks ago... The fire is still occuring.

We have the smoke and scent here too.

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Not a half hour after I ventured outside, and noticed a smoky, smoggy scene and smell, I read MKX's update which mentioned the Pagami Creek Fire, which apparently occurred several weeks ago, advecting its smoke plume into S Wisconsin.

I was wondering what that was. Lol i've never seen a graphic like this before on the point and click..

fu.jpg

This Afternoon: Areas of smoke. Mostly sunny, with a high near 71. Northwest wind around 10 mph.

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SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI

103 PM CDT TUE SEP 13 2011

..SMOKE FROM NORTHEAST MINNESOTA WILDFIRE INVADING WISCONSIN

SOUTHERN WISCONSIN IS EXPERIENCING THE EFFECTS OF SMOKE FROM THE

WILDFIRE BURNING IN THE BOUNDARY WATERS CANOE AREA IN NORTHEAST

MINNESOTA. THE SMOKE IS BEING DISPERSED OVER WISCONSIN BY

NORTHERLY WINDS FLOWING AROUND A CENTER OF HIGH PRESSURE OVER THE

NORTHERN PLAINS. THE SMOKE WILL PERSIST FOR THE REST OF THE DAY

AND LIKELY INTO THE EVENING. EXPECT HAZY SKIES AND A DISTINCT

BURNING ODOR.

SOME RESIDENTS WISCONSIN HAVE REPORTED DIFFICULTY

BREATHING...IRRITATED EYES AND HEADACHES AS A RESULT OF THE SMOKE.

A WEATHER SPOTTER NEAR HARTFORD HAS REPORTED NOTICEABLE AMOUNTS OF

ASH BEING DEPOSITED ON CARS.

AIR QUALITY WILL LIKELY REMAIN UNHEALTHY AT TIMES IN PARTS OF

SOUTHERN WISCONSIN THIS AFTERNOON AND EVENING. CHILDREN...ELDERLY

PEOPLE...INDIVIDUALS WITH RESPIRATORY AND CARDIAC PROBLEMS...OR

ANYONE ENGAGED IN STRENUOUS OUTDOOR ACTIVITIES FOR A PROLONGED

PERIOD OF TIME...SHOULD USE CAUTION.

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My total rainfall Sept 7-11th was 2.60". For the year to date I am already at 38.86"!!! (DTW is lagging behind at 32.86", exactly 6" less). For comparison purposes, Ive kept daily liquid precip records since 2000, and only 2 years had more (2006 with 39.33" and 2008 with 39.05")....and we still have 3.5 months to go in 2011!!!!!!

Snow-wise, the year sits at 60.2" already, with Oct-Dec to come.

Should the remainder of the year provide "normal" precipitation and snowfall...on average 9.5" of precip falls from mid-Sept thru the end of December, so I would be over 48" precip. Also, Oct-Dec typically see 11-12" of snow, so Id be into the low 70s for snowfall. (2005 saw 95.3" and 2008 saw 87.0", so 2011 would be the 3rd snowiest). So in summary, 2011 is a lock for my wettest year since 2000, and will probably be at least 3rd snowiest since 1996, if not better.

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This may bore the **** out of some of you...but it looks like the typical cold spots in northern MN (i.e., the radiational cooling madhouse of Tower, MN) may drop into the lower 20s later this week.

:thumbsup:

I checked the USU climate website to see how often Tower has dropped to 24F or lower, prior to September 18.

Some data is missing...but here is what I found (the bold is the most impressive):

09/08/1975: high 54, low 24

09/10/1976: high 64, low 24

09/05/1993: high 61, low 24

09/01/1974: high 56, low 23

09/16/1976: high 63, low 23

09/17/1976: high 75, low 23

08/28/1982: high 58, low 23

08/29/1982: high 63, low 23

09/01/1994: high 61, low 23

09/02/1994: high 63, low 23

09/17/1995: high 57, low 23

09/10/1997: high 67, low 23

09/15/1900: high 62, low 22

09/15/1964: high 55, low 22

09/17/1973: high 56, low 22

09/03/1974: high 55, low 22

09/09/1975: high 57, low 22

08/29/1976: high 58, low 22

08/24/1977: high 62, low 22

08/27/1986: high 56, low 22

09/09/1995: high 63, low 22

09/15/2000: high 65, low 22

08/28/1986: high 56, low 21 (!!!)

09/08/1995: high 57, low 20

09/03/1997: high 61, low 20

Bottom line:

- If Tower hits 24F later this week, it won't be that big of a deal

- If Tower hits 22-23F later this week, that will be much more significant, but still not unprecedented

- If Tower hits 21F later this week, it will be the 4th coldest temp so early in the season

- If Tower hits 20F later this wee, it will be the 3rd coldest temp so early in the season

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