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June 2012 General Discussion


Chicago Storm

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Yeah, those are a form of Cirrus.

It looks like a combination of these two forms below...

http://en.wikipedia....us_fibratus.jpg

http://en.wikipedia....zonArcIdaho.jpg

Yeah I think those match well. Just a bunch of flat bottomed cumulus today. Some of the best clouds come off of thunderstorms tops or ahead of warm fronts.

wisgif32.jpg

Clouds in northern lower MI are lined up in a nice linear pattern. Down in the OV too.

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this has happened way too many times this year

"THERE IS THE POTENTIAL THAT THE FRONT MAY SLIP THROUGH DRY"

This certainly goes down as one of the most frustrating thunderstorm seasons ever. :axe:

My place finally got a good hard soaking on the 18th but now we're going back into the same old pattern once again. Torch builds in from the west, followed by impotent moisture starved trailing cold front, followed by dry NW flow for a week. Rinse, repeat.

April 14/15 and June 18 are the only two occurrences of more than 0.75" of rain falling in less than an hour so far this year. Most of the thunderstorms this year have either missed entirely to the north or been pathetically brief. It's bizarre to have so much of the action staying north as most normal years I'm shooting myself in the head while northern Illinois and Indiana get pounded with all kinds of rain and severe weather episodes.

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This certainly goes down as one of the most frustrating thunderstorm seasons ever. :axe:

My place finally got a good hard soaking on the 18th but now we're going back into the same old pattern once again. Torch builds in from the west, followed by impotent moisture starved trailing cold front, followed by dry NW flow for a week. Rinse, repeat.

April 14/15 and June 18 are the only two occurrences of more than 0.75" of rain falling in less than an hour so far this year. Most of the thunderstorms this year have either missed entirely to the north or been pathetically brief. It's bizarre to have so much of the action staying north as most normal years I'm shooting myself in the head while northern Illinois and Indiana get pounded with all kinds of rain and severe weather episodes.

That pretty much sums up it. Hot, dry and windy is the worst, and that is what we have been getting much of this late spring. I am hoping for a Summer 2009 redux soon, because if rain is going to be scarce at least cooler than average temps would make it manageable.

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Found these clouds to be interesting yesterday late afternoon. Not sure what they are. (Not the cumulus or contrails)

547293_4218125858334_2111373186_n.jpg

Not sure. The pattern is similar to undulatus asperatus seen on the underside of thick alto/strato-cumulus clouds. It's a more subtle phenomenon to see it in cirrus clouds though and I'm not sure it's officially named. In most cases turbulent wave patterns are a result of strong vertical wind shear concentrated in a shallow layer.

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Not sure. The pattern is similar to undulatus asperatus seen on the underside of thick alto/strato-cumulus clouds. It's a more subtle phenomenon to see it in cirrus clouds though and I'm not sure it's officially named. In most cases turbulent wave patterns are a result of strong vertical wind shear concentrated in a shallow layer.

Nice explanation!

With regards to thunderstorms; I think this year, you've seen more thunderstorm action then this side of the lake! Especially lately.

You can see where the thunderstorms die out tonight by this map. Frustrating...

hrw-nmm_eus_048_precip_p48.gif

One more hour to go and the sun starts it's slow journey south in the sky!

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Storms are about 30 miles from La Crosse right now.

Some minor damage in Taylor, WI.

0528 AM TSTM WND GST MEDFORD 45.14N 90.35W

06/19/2012 M58.00 MPH TAYLOR WI AWOS

CORRECTED FOR TIME AND WIND GUST

0551 PM TSTM WND DMG 1 NW MEDFORD 45.15N 90.36W

06/20/2012 TAYLOR WI LAW ENFORCEMENT

A COUPLE TREES AND A POWER POLE DOWN.

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Interesting how much more 90F+ heat Chicago has had this year than Detroit. Today was DTW's 5th day of 90, though 3 of the 5 were exactly 90F.

Day....DTW

5/25.....90

5/28.....95

6/09.....90

6/10.....90

6/19.....95

I will note however, the yearly average is 17 days of 90F+ for ORD and 12 for DTW.

It will be interesting to see if DTW is able to close the gap at all.

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Unlike in the past, ORD has been as warm as or warmer than MDW during all 90+ days this year.

Day...ORD..MDW..

5/19....92......91

5/20....93......92

5/24....90......90

5/27....97......97

5/28....95......94

6/9......90......89

6/10....93......92

6/11....90......90

6/15....94......93

6/16....94......94

6/18....94......92

6/19....95......93

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

Tot......12......11..

Thanks for running that. I was thinking the same thing but didn't know if it was actually true.

Add another one to the list...

Day...ORD..MDW..

6/20....95......93

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Nice explanation!

With regards to thunderstorms; I think this year, you've seen more thunderstorm action then this side of the lake! Especially lately.

If you draw a line from La Crosse WI to Saginaw MI, that's the current dividing line between wet north and dry south.

As for the cloud discussion. It's interesting that "altocumulus undulatus asperatus" and "stratocumulus undulatus asperatus" were only officially named in 2009. They all seem to be associated with large scale lifting of a potentially unstable layer under conditions of significant vertical wind shear. It happens all the time in the plains states and elsewhere ahead of warm fronts. I'm not exactly sure what causes the wavy pattern to appear in a really thin high cirrus cloud though.

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Saginaw, my area, was mentioned above. WE have had ok rain amounts this spring. It is interesting lately though how many times there have been rain complexes to my west and they fizzle out over night. Tonight a very good looking line of storms along the cold front in Wisc, is showing up but I am thinking this will also fizzle when it gets to my area. But, I am thankful for the rain we have had this season.

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T-Storms approaching Madison. Seems like the front is moving a bit faster then forecast. Sitting at 80° here currently.

Tropical style downpours with lightning in Madison, the first of 2 squall lines to hit. Second one is a bit stronger and racing across the county border. This first squall got surprisingly strong.

Temperature dropped 9 °F to 72 °F, 2 mb surge in pressure accompanied the temp drop.

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Tropical style downpours with lightning in Madison, the first of 2 squall lines to hit. Second one is a bit stronger and racing across the county border. This first squall got surprisingly strong.

Temperature dropped 9 °F to 72 °F, 2 mb surge in pressure accompanied the temp drop.

Sounds awesome! Hoping that some of these can hold together to make it into this area. Latest NMM shows them lasting into NE IL, before dying out. Then refiring further southeast during the day tomorrow.

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