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June 2012 General Discussion


Chicago Storm

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Thanks. I found that earlier but didn't realize you could click on the state names in that one list to get a zoomed in picture

I was checking to see if Oakland county had gotten any severe weather reports yet because I recalled that in May they hadn't gotten any yet, and sure enough Oakland county is still blank save for one wind report on the southern border.

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June 2012 is currently the 11th warmest on record for Chicago, through the 24th.

Obivously the the average will come down a bit the next two days, but will come back up in the final 3 days of the month. Based on the current LOT forecast, the final average would be around 74.2, which would tie it for 5th warmest on record.

1. 76.2 - 1933

2. 75.8 - 1971

3. 75.7 - 1954

4. 74.3 - 1952

5. 74.2 - 2005

6. 74.0 - 1949

7. 73.9 - 1956

8. 73.8 - 1921

9. 73.6 - 1953

10. 73.4 - 1963

11. 73.3 - 2012

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Going to be pulling for the cold front to deliver thurs night...forcing/shear looks terrible but instability will be ample...hopefully something can get take advantage.

just mentioned this in the heat thread as to see if/any clouds do to max heating potential if storms were to go a bit earlier or even at all for that matter.

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just mentioned this in the heat thread as to see if/any clouds do to max heating potential if storms were to go a bit earlier or even at all for that matter.

Thurs is looking locked and loaded for upper 90s IMO...I think Friday stands a much better shot at debris issues

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Thurs is looking locked and loaded for upper 90s IMO...I think Friday stands a much better shot at debris issues

12z EURO drops the front in here about 1pm on Thursday, not sure how hot it will get here. Friday looks like a lot of clouds and a onshore flow now.

EURO is showing some thunderstorms on a NW flow this coming weekend.

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12z EURO drops the front in here about 1pm on Thursday, not sure how hot it will get here. Friday looks like a lot of clouds and a onshore flow now.

EURO is showing some thunderstorms on a NW flow this coming weekend.

The cold front won't be packing much of a punch...upper 90s looks like the min for thursday

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The cold front won't be packing much of a punch...upper 90s looks like the min for thursday

MKX talking about knocking down there highs for Thursday because of the front. Has them 100-103° west of I-94!

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18z NAM breaking out a solid cluster of thunderstorms in northern IL after 0z Thursday evening in a highly unstable environment. Easy to see in both H7 and UVV progs.

Temps aloft do cool later in the run but it's still gonna take a big effort to get anything substantial going imo.

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24 years ago today...June 25, 1988

ILLINOIS

Chicago (ORD): 103º

Chicago (MDW): 104º

Moline: 104º

Peoria: 105º

Quincy: 101º

Rockford: 101º

Springfield: 101º

INDIANA

Evansville: 101º

Fort Wayne: 106º

Indianapolis: 102º

Lafayette: 105º

South Bend: 104º

IOWA

Burlington: 103º

Iowa City: 102º

Lamoni: 104º

Marshalltown: 101º

Ottumwa: 103º

KENTUCKY

Lexington: 101º

Louisville: 101º

Paducah: 102º

MICHIGAN

Ann Arbor: 101º

Detroit: 104º

Flint: 101º

Jackson: 100º

MISSOURI

Cape Girardeau: 100º

Columbia: 102º

Kansas City: 102º

Kirksville: 102º

St. Louis: 101º

OHIO

Akron: 100º

Cleveland: 104º

Columbus: 101º

Dayton: 102º

Findlay: 104º

Mansfield: 101º

Toledo: 104º

WISCONSIN

Kenosha: 101º

Milwaukee: 100º

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Having a hard time reconciling the moisture being shown by the models by late thursday...I'd really like to believe that we'll see some quality moisture pooling along the front as it becomes semi stationary but season trends and dry surface lend no confidence whatsoever.

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Perfect day today. A bit breezy with lower humidity. Shot 75 (golf) to boot, not bad for me after not playing for 3 weeks.

Dewpoints have been on a wild ride at LAF today. To be expected with its kookiness I suppose.

2AM: 63

4AM: 58

7AM: 60

10AM: 55

12PM: 41

1PM: 33

3PM: 28

4PM: 31

5PM: 36

7PM: 36

8PM: 51

9PM: 50

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Having a hard time reconciling the moisture being shown by the models by late thursday...I'd really like to believe that we'll see some quality moisture pooling along the front as it becomes semi stationary but season trends and dry surface lend no confidence whatsoever.

Your gut is on to something, in my opinion.

I don't doubt that there will be some moisture pooling along the front, but, as always, it'll all be relative. I can't buy into a solution that has 70+ dews at the surface or 2"+ precipitable-water values. The ground is dry, vegetation is becoming parched and not transpiring, and Gulf-source moisture will be absent: where is the moisture supposed to come from? Besides, we've seen this before this season -- especially from the GFS -- only to be disappointed upon verification. Even if sufficient moisture were present through the column, temperatures aloft are progged to be quite warm. That implies considerable convective inhibition (i.e., a cap) to be overcome. One then might say -- "well, we have a cold front." That's an awfully weak front progged, meaning an anemic source of lift. From an ingredients perspective, it certainly does not look good for widespread convection and rain.

Overall, the idea of rain during that period is something to keep in the back of the mind. That said, I'm saving my excitement for something else.

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Skilling saying a 40% chance of storms later Thursday into Friday for the lower lakes, severe not out of the question.

His statements regarding rain chances in that time frame have perturbed me a little. He seems to be leaning pretty heavily on the GFS, at least in his on-air presentation. The problem with the GFS is, cooler, moister (and more precip) is right in line with one of its noted biases, as has been clear a few times already this season. Not only that, it's somewhat out of line with other guidance. We'll see. That said, he's certainly right, subsuming the moisture field suggested by the GFS (another issue given the lack of Gulf moisture and the drought), that storms would develop and be explosive IF (key word, there) the cap can be broken. I'll be the first to give him (and the GFS) credit if rain verifies in that manner (sizable and at least somewhat widespread) on Thursday night.

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Again low confidence but there isn't much else to talk about other than the 100 or 103 debate...latest NAM looks pretty good multiple MCS chances for the area.

GFS also keeps the semi stationary front active...thurs night is probably the longest shot but the longer we can keep the front hanging around the more i'll start buying into some action.

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His statements regarding rain chances in that time frame have perturbed me a little. He seems to be leaning pretty heavily on the GFS, at least in his on-air presentation. The problem with the GFS is, cooler, moister (and more precip) is right in line with one of its noted biases, as has been clear a few times already this season. Not only that, it's somewhat out of line with other guidance. We'll see. That said, he's certainly right, subsuming the moisture field suggested by the GFS (another issue given the lack of Gulf moisture and the drought), that storms would develop and be explosive IF (key word, there) the cap can be broken. I'll be the first to give him (and the GFS) credit if rain verifies in that manner (sizable and at least somewhat widespread) on Thursday night.

Area mets concur with you and Alek concerning issues with the GFS. It has blown it with the last several troughs/fronts in regard to moisture. My gut is that we'll see 1 or 2 renegade t-storms pop the cap...probably right over Lake Michigan :lol::axe:

IND:

OP GFS AS HAS BEEN MENTIONED PREVIOUSLY CONTINUES TO

BE A COOL OUTLIER COMPARED TO ALL OTHER GUIDANCE. THE MODEL

CONTINUES TO ADVERTISE POOR MIXING HEIGHTS BELOW 2KFT WHICH LOOKS TO

BE COMPLETELY UNREALISTIC. THE OP GFS IS ALSO SIGNIFICANTLY

OVERDOING DEWPOINTS WITH MID TO UPPER 70S FOR THURSDAY AFTERNOON. IN

A TYPICAL OHIO VALLEY SUMMER...THESE NUMBERS MIGHT NOT BE TERRIBLY

FAR FETCHED. HOWEVER AS DROUGHT CONDITIONS HAVE WORSENED OVER THE

REGION AIDED BY A PERSISTENT LACK OF DEEP LOW LEVEL MOISTURE FETCH

FROM THE GULF OF MEXICO OVER THE LAST 4-6 WEEKS...SOME MODELS LED BY

THE OP GFS ARE INCREASINGLY STRUGGLING WITH DEWPOINTS AND RH VALUES.

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DP struggles aside, i've been watching this period as the boundary has been modeled as flattening out for some time now and this is my favorite type of weather to follow/track so I appreciate this weenie excerpt from DVN.

THURSDAY NIGHT THROUGH SUNDAY...THE SYNOPTIC SETUP BECOMES FAVORABLE

FOR NOCTURNAL MCS ACTIVITY...AND POSSIBLY DERECHOS. THESE

INGREDIENTS INCLUDE THE WEST TO EAST LOW LEVEL BOUNDARY...HIGH

THETAE AIRMASS WITH CAPES POSSIBLY IN THE RANGE OF 3000 TO 4000 OR

GREATER J/KG...AND LOCATION ALONG THE ALONG THE SOUTHERN EDGE OF

STRONGER WINDS ALOFT IN THE WESTERLIES AT 500 AND 300 MB. CONDITIONS

LOOK MOST FAVORABLE FOR SEVERE WIND AND HEAVY RAINFALL MCS ACTIVITY

THU NIGHT AND SATURDAY NIGHT. WILL ADDRESS THIS SEVERE POTENTIAL IN THE

HWO. FOR NOW...THIS SETUP WILL REQUIRE AN EXTENDED PERIOD OF SLIGHT

TO LOW END CHANCE POPS...THAT MAY BE FINE TUNED IN LATER FORECASTS.

TEMPERATURES WILL BE SOMEWHAT DEPENDENT ON THESE MESOSCALE EVENTS.

THE ASSOCIATED CLOUD COVER AND EXTENT AND COVERAGE OF LINGERING

SYSTEMS DURING MAINLY THE MORNING HOURS MAY SUPPRESS WARMING

SOME...AND FOR NOW WILL KEEP A RANGE OF ROUGHLY LOWER 90S FOR HIGHS

AND LOWER 70S FOR LOWS.

MONDAY IS KEPT DRY...BUT STILL LIKELY VERY WARM AND SOMEWHAT HUMID.

THE LATEST GFS AND ECM WOULD SUGGEST ANOTHER ROUND OF STORMS MONDAY

NIGHT AS A SHORTWAVE PUSHES THROUGH IN THE W-NW FLOW ALOFT.

EDIT: added SPC text / HPC graphic

...CNTRL PLAINS/MID TO UPPER MS VALLEY/SRN GREAT LAKES...

A ZONAL FLOW PATTERN WILL BE IN PLACE ACROSS THE NCNTRL STATES ON

THURSDAY AS A SUBTLE UPPER-LEVEL TROUGH MOVES EWD ACROSS WRN ONTARIO

AND THE UPPER MS VALLEY.. AT THE SFC...A SLOW MOVING COLD FRONT IS

FORECAST TO BE LOCATED FROM THE MID-MO VALLEY EWD INTO THE SRN GREAT

LAKES REGION. ALONG AND SOUTH OF THE BOUNDARY...STRONG INSTABILITY

IS FORECAST BY THURSDAY AFTERNOON WITH THUNDERSTORM DEVELOPMENT

POSSIBLE ALONG THE BOUNDARY DURING THE LATE AFTERNOON AND EVENING.

FORECAST SOUNDINGS AT 00Z/FRI FROM OMAHA EWD TO CHICAGO SHOW AN

IMPRESSIVE THERMODYNAMIC ENVIRONMENT WITH MLCAPE VALUES OF 3000 TO

4000 J/KG. IN ADDITION...DEEP LAYER SHEAR IS FORECAST TO BE FROM 35

TO 45 KT ACROSS MUCH OF THE WARM SECTOR. IN SPITE OF THE INSTABILITY

AND FAVORABLE SHEAR ENVIRONMENT...MID-LEVEL TEMPS ACROSS THE SEE

TEXT AREA ARE FORECAST TO BE VERY WARM WITH 700 MB TEMPS EXCEEDING

+12C. THIS COMBINED WITH SUBSIDENCE ASSOCIATED WITH AN UPPER-LEVEL

RIDGE OVER THE MID-MS VALLEY WILL PROBABLY KEEP SEVERE THUNDERSTORM

DEVELOPMENT ISOLATED JUSTIFYING A 5 PERCENT SEVERE PROBABILITY.

fill_99qwbg.gif

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