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June 2013 General Discussion/Obs


snowlover2

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There could be a flash flooding issue setting up very quickly across Southern WI, a lot of training going on within the line with very little northward movement of the line.

 

Yep, from there through S Minnesota could be flooding issues.  Much of S Wisconsin have seen several MCS' in the last week and a half as well, the soils are already saturated.

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Thought I might have to  move the smoker under the patio umbrella but thankfully sinking south and nothing but very light rain so far and that doesn't look to change unless it happens to creep north.  

 

Nice light show off to the west for a good hr+ while sitting outside and now some nice relaxing rumbles south... Awesome spring and early summer rolls on.

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In SE WI the line is sinking south, but there are more storms along the line and those aren't moving much laterally except maybe a touch to the northeast.

 

Question is how much can/will survive into MI?

 

Any thoughts as i have not been following much the past day or two?

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Question is how much can/will survive into MI?

 

Any thoughts as i have not been following much the past day or two?

Everything that has been trying to cross the lake has fizzled out, so I am expecting nothing of significance tonight.

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That area in SW WI really getting pounded, the line isn't moving much there.

It's really dumping here! Hopefully the cells over this way are progressive. The urbanized nature of this county is prone to flooding.

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It's really dumping here! Hopefully the cells over this way are progressive. The urbanized nature of this county is prone to flooding.

Along the immediate lakeshore the line isn't moving as quickly as it is along the I-90/39 corridor.

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Everything that has been trying to cross the lake has fizzled out, so I am expecting nothing of significance tonight.

DTX's aviation update from last hour actually has a very good glimpse into the storm chances overnight toward morning.

 

 

THE QUESTION ON WHAT WILL BECOME OF THE CONVECTION OVER SOUTHERN

WISCONSIN IS THE MAIN FOCUS FOR THE TAFS THIS MORNING. THE

UPSTREAM THUNDERSTORM ACTIVITY SEEMS TO BE FOCUSING ON EDGE OF

CAP (SEE 00Z KDVN RAOB) FORCED BY LOCALIZED CVA. THE SHORTWAVE

ENERGY IS A RECYCLED CONVECTIVE VORT MAX THAT HAS EMERGED FROM THE

SOUTH. COLUMN MEAN FLOW OVER SOUTHERN WISCONSIN IS ACTUALLY QUITE

WEAK AS THE LOW LEVEL JET IS WEAK WITHIN THE UPPER LEVEL RIDGE.

CORFIDI VECTORS THROUGH MUCH OF THE MORNING ARE FROM THE EAST

WHICH CORRESPONDS WELL TO THE BACKBUILDING BEHAVIOR SEEN RECENTLY.

THIS LEAVES SERIOUS DOUBT IN POTENTIAL FOR THUNDERSTORMS TO

MIGRATE EASTWARD INTO SOUTHEASTERN MICHIGAN. NEVERTHELESS..00Z

KDTX RAOB SUGGESTS THAT EFFERVESCING WEAK CONVECTION MAY BE

POSSIBLE THIS MORNING OVER THE NORTHERN CWA WITH NOTHING MORE THAN

A MODEST INCREASE IN MOISTURE AND ASSOCIATED CLOUD TOP COOLING.

FOR NOW WILL MAINTAIN FORECAST CONTINUITY AND CONVERT PROB30 TO

TEMPO.

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Just like yesterday the storms dipped just far enough south to hit Cedar Rapids.  I got another 0.41", putting the two-day total at 1.74".  This time we got better lightning/thunder as well.  Any short-term dryness issues are now gone here.  Iowa City and points south continue to get nothing.  There appears to be a better shot of storms for the entire local area Sunday night.

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EXCESSIVE RAINFALL DISCUSSION

NWS WEATHER PREDICTION CENTER COLLEGE PARK MD

949 AM EDT SAT JUN 22 2013

...VALID 15Z SAT JUN 22 2013 - 12Z SUN JUN 23 2013...

...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...

SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM

30 S JKJ 10 SSW ADC 15 W JMR 25 NNW RPD 15 SSW PBH 15 SSW PCZ

20 NNE DKB 20 NW PIA 20 SSE MUT 10 ENE CID 10 ENE ALO 15 NE CAV

15 WSW AXA 10 SW SPW 10 NE YKN 40 SE ICR 10 NW 9V9 20 SW ABR

30 S JKJ.

...PORTIONS OF NRN PLAINS/UPPER MS VLY/MIDWEST...

LOTS OF IFFINESS IN TODAYS FCST HENCE THE LARGE SLGT RISK AREA

BEING ISSUED.  LIKE YDA..BELIEVE THAT TO A LARGE EXTENT..THE

SYNOPTIC SCALE FORCING PER MODEL FCSTS HAS OR WILL BE OVERWHELMED

BY LAST NIGHTS/FUTURE CNVCTV EVENTS.

IN GNRL..LATEST OBSERVATIONAL DATA IN GNRL CONTINUES TO SHOW AN

E/W ORIENTED REGION OF LLVL MSTR CNVGNC AXIS LYING ACROSS THE AREA

WHICH AGAIN SHOULD FOCUS THE INITIAL STAGES OF SGFNT CNVCTV RAINS

TODAY.  LATEST UPPER AIR DATA AS INDCS THE BEST MSTR AVBLTY AND

MSTR FLUX INTO THIS FEATURE HAS SHIFTED SLIGHTLY EWD TOWARDS THE

MIDWEST AS COMPARED TO 24HRS AGO.   A NEVER ENDING SERIES OF WEAK

IMPULSES BEING EJECTED FM THE CURRENT SLOWLY PROGRESSIVE UPPER

TROF SHOULD FIRE THE ACTVTY WHICH WILL BE AIDED BY BROADLY DIV

FLOW ALOFT.  CURRENT THINKING IS FOR ACTVTY TO REDVLP ACROSS THE

ERN PORTION OF THE SD THIS AFTN AND PROPAGATE EWD PROBABLY CLOSE

TO WHERE THE BEST RNFL OCCURRED YDA.  SUSPECT THE HEAVIEST AMTS

COULD OCCUR OVR SERN MN/WRN WI/NRN IL WHERE CNVCTN WILL BE

SOMEWHAT REMOVED FM THE WLYS..THUS ALLOWING FOR CNVCTN TO BE VRY

SLOW MOVG ACROSS THE AREA.

THAT BEING SAID AND GIVEN THE UNCERTAINTY INVOLVED..COULD SEE 2.00

INCH TOTALS ANYWHERE WHERE WITHIN THE OUTLOOK AREA WITH TOTALS OF

4.00 INCHES POSSIBLE THRU THE FCST PD.

 

 

looks like same spots in for more heavy rain moving forward...fairly obvious, but

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