cyclone77 Posted August 4, 2012 Share Posted August 4, 2012 Don't think we'll have power here much longer lol. Ridiculous amount of lightning showing up with this thing as some of you guys have pointed out. Strongest winds may hit a bit north, as the outflow from the southwest may cut the best winds off. Gonna be close. Really muggy out there with dews up into the mid 70s now. Link to comment Share on other sites More sharing options...
Geos Posted August 4, 2012 Share Posted August 4, 2012 Cold pool from the previous MCS really screwed southern WI over. At least it's going to rain, can't complain about that this year. You talking about south central part - southeastern part seems pretty unstable now. Plenty of sun around here to get things further destabilized. Link to comment Share on other sites More sharing options...
RobertSul Posted August 4, 2012 Share Posted August 4, 2012 Anybody else see circulation in the storm by Avon, IL? Link to comment Share on other sites More sharing options...
Jim Martin Posted August 4, 2012 Share Posted August 4, 2012 Looking like a severe thunderstorm watch will be forthcoming for the Chicago area here shortly... Link to comment Share on other sites More sharing options...
turtlehurricane Posted August 4, 2012 Share Posted August 4, 2012 You talking about south central part - southeastern part seems pretty unstable now. Plenty of sun around here to get things further destabilized. It's unstable here too (sfc temps approaching 90) but the part of the squall line that's approaching is still dead. Maybe it'll fire up as it gets to the better CAPE in the next hour though, key thing is we need a density current that's colder than the old cold pool to develop and push out ahead. We shall see and maybe I did speak too soon. Link to comment Share on other sites More sharing options...
Chinook Posted August 4, 2012 Share Posted August 4, 2012 Looks like the World's Largest Truck Stop is about to get some of the heaviest thunderstorm action. Link to comment Share on other sites More sharing options...
hawkeye_wx Posted August 4, 2012 Share Posted August 4, 2012 CR airport gusted to 72 mph and received 2 inches of rain in about 20-30 minutes. There's a flash flood warning for that area, the first such warning around here in a long time. Link to comment Share on other sites More sharing options...
daddylonglegs Posted August 4, 2012 Share Posted August 4, 2012 All I care about is the rain...just about done here...really drying up west to east... Link to comment Share on other sites More sharing options...
cyclone77 Posted August 4, 2012 Share Posted August 4, 2012 Kind of an interesting situation developing here. Strong northward moving cell heading right at us from the south, with the powehouse line blowing in from the west. Looks like they may both hit at the same time lol. Link to comment Share on other sites More sharing options...
hm8 Posted August 4, 2012 Share Posted August 4, 2012 Lollapalloza is going on now, right? Might get interesting there later... Link to comment Share on other sites More sharing options...
turtlehurricane Posted August 4, 2012 Share Posted August 4, 2012 Huge hail spike on the Green Bay radar from the storm in eastern IA. Link to comment Share on other sites More sharing options...
Indystorm Posted August 4, 2012 Share Posted August 4, 2012 Hang on Cyclone. Amount of lightning strikes is concerning along with wind potential as that line heads eastward into juicy CAPE in IL. Link to comment Share on other sites More sharing options...
turtlehurricane Posted August 4, 2012 Share Posted August 4, 2012 DVN detecting 80 mph winds in the rear inflow jet, also reflectivity is being strongly attenuated now since the radar is in the middle of the action. Solid line of hail based on dual pol. Link to comment Share on other sites More sharing options...
Hoosier Posted August 4, 2012 Share Posted August 4, 2012 Kind of an interesting situation developing here. Strong northward moving cell heading right at us from the south, with the powehouse line blowing in from the west. Looks like they may both hit at the same time lol. Similar situation produced the West Lafayette F4 in 1994. Hopefully for your sake there won't be repeat. Link to comment Share on other sites More sharing options...
cyclone77 Posted August 4, 2012 Share Posted August 4, 2012 Similar situation produced the West Lafayette F4 in 1994. Hopefully for your sake there won't be repeat. Haha, man I hope not. More worried about lightning than anything lol. Starting to thunder pretty good now. Dark as dusk out there. EDIT: Continuous thunder now... Link to comment Share on other sites More sharing options...
Jim Martin Posted August 4, 2012 Share Posted August 4, 2012 Severe Thunderstorm Watch for parts of Illinois, Indiana, Wisconsin, and Lake Michigan until 8pm cdt. Damaging wind the main threat. Link to comment Share on other sites More sharing options...
Indystorm Posted August 4, 2012 Share Posted August 4, 2012 Looks like WAA wing of this MCS is trying to get going from Indpls northwestward into IL to the main line based on radar returns. Could be a VERY interesting evening in these parts. 86/73 Goshen 94/71 Lafayette Link to comment Share on other sites More sharing options...
Geos Posted August 4, 2012 Share Posted August 4, 2012 Those storms probably 2.5-3 hours from Chicago and Lake Michigan? Might come through at the end of peak heating. Link to comment Share on other sites More sharing options...
A-L-E-K Posted August 4, 2012 Share Posted August 4, 2012 When are you returning home? It will be jet lag city. I'm gone for another week plus...looks like it's about to rock in Chicago Link to comment Share on other sites More sharing options...
SouthernNJ Posted August 4, 2012 Share Posted August 4, 2012 Looks like some pretty good rotation within the line just north of Clinton IA. Both LOT and DVN showing it between 140 and 200 PM CDT. Link to comment Share on other sites More sharing options...
Indystorm Posted August 4, 2012 Share Posted August 4, 2012 Those storms probably 2.5-3 hours from Chicago and Lake Michigan? Might come through at the end of peak heating. Yup. Storms moving east 35-40 mph. Perfect timing. Link to comment Share on other sites More sharing options...
Thundersnow12 Posted August 4, 2012 Share Posted August 4, 2012 Yet again im out of town lol you're welcome all. Link to comment Share on other sites More sharing options...
Hoar_Frost Posted August 4, 2012 Share Posted August 4, 2012 Those storms probably 2.5-3 hours from Chicago and Lake Michigan? Might come through at the end of peak heating. Actually, I couldn't think of a more optimal timing (though that may be what you meant). Link to comment Share on other sites More sharing options...
Geos Posted August 4, 2012 Share Posted August 4, 2012 Actually, I couldn't think of a more optimal timing (though that may be what you meant). Yes, optimal timing is what I was getting at. New storms firing up towards Pontiac right now. Link to comment Share on other sites More sharing options...
cyclone77 Posted August 4, 2012 Share Posted August 4, 2012 Luckily power only flickered on and off a few times. Picked up over 2" of rain in less than 45 minutes. Very heavy rain. Winds never got any higher than about 45mph, but the lightning was insane. Link to comment Share on other sites More sharing options...
Geos Posted August 4, 2012 Share Posted August 4, 2012 Luckily power only flickered on and off a few times. Picked up over 2" of rain in less than 45 minutes. Very heavy rain. Winds never got any higher than about 45mph, but the lightning was insane. That's some serious rain! Probably your heaviest rainfall all summer!? Link to comment Share on other sites More sharing options...
snowlord81 Posted August 4, 2012 Share Posted August 4, 2012 Just had .41 inches of rain here and now the suns back out! Link to comment Share on other sites More sharing options...
turtlehurricane Posted August 4, 2012 Share Posted August 4, 2012 Rain has begun, wisps of cloud developing aloft as the cold rain falls into the warm boundary layer air. Convective cells going up along an outflow boundary stretching from the WI/IA/IL border to Devil's Lake... about where the old outflow boundary was before this system overtook it. Could get interesting quickly for southern WI. Link to comment Share on other sites More sharing options...
Indystorm Posted August 4, 2012 Share Posted August 4, 2012 PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 311 PM CDT SAT AUG 04 2012 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0308 PM TSTM WND GST 5 SW ROCKFORD 42.22N 89.13W 08/04/2012 M75 MPH WINNEBAGO IL TRAINED SPOTTER Link to comment Share on other sites More sharing options...
Geos Posted August 4, 2012 Share Posted August 4, 2012 Newest LOT disco: 000 FXUS63 KLOT 041957 AFDLOT AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 257 PM CDT SAT AUG 4 2012 .DISCUSSION... 256 PM CDT IMMEDIATE CONCERN IS THE ONGOING CONVECTIVE ACTIVITY AND THE CONCERN FOR SEVERE THUNDERSTORMS THIS AFTERNOON INTO EARLY THIS EVENING. ONGOING CONVECTION PRODUCED AN MCV WHICH GENERATED A LINE OF THUNDERSTORMS OVER CENTRAL AND EASTERN IOWA. THE ENVIRONMENT OUT AHEAD OF THE THUNDERSTORMS OVER ILLINOIS AND INDIANA IS VERY WARM...HUMID AND UNSTABLE. AS OF 19Z...MUCAPE VALUES WERE OVER 3000 J/KG WITH AN AREA IN EXCESS OF 4000 J/KG POOLING ALONG A WARM FRONT PUSHING NWD INTO THE FAR WESTERN PORTIONS OF THE CWA. UPSTREAM...THESE STORMS HAVE A HISTORY OF PRODUCING WINDS IN EXCESS OF 60 MPH AND VERY HEAVY RAINFALL...WITH UP TO 2 INCHES FALLING IN A 30 MINUTE PERIOD. EXPECT THE ACTIVITY TO TRACK EASTERLY FOR THE NEXT FEW HOURS. WITH MEAN LAYER FLOW TURNING A LITTLE SOUTH OF EAST LATER THIS AFTERNOON...THE THUNDERSTORMS COULD TAKE A SLIGHT RIGHT TURN SO THE THUNDER SHOULD IMPACT ALMOST ALL OF THE CWA...HITTING THE ROCKFORD METRO AREA BY AROUND 3PM AND THE CHICAGO METRO AREA BETWEEN 430PM AND 5PM. THE MAIN SEVERE THREAT WITH THESE STORMS REMAINS DAMAGING WINDS UP TO 70MPH. WITH PWATS EXPECTED TO BE 2 TO 2.5 INCHES AS THE STORMS MOVE THROUGH...LOCALLY HEAVY RAINFALL WITH THE POSSIBILITY FOR 1 TO 2 INCHES OF RAINFALL IN A 30 MINUTE PERIOD. THIS AMOUNT OF RAIN FALLING IN SUCH A SHORT AMOUNT OF TIME MAY LEAD TO LOCALIZED FLOODING...ESPECIALLY IN URBANIZED AREAS. THERE IS ALSO AN ISOLATED LARGE HAIL THREAT WITH THE STORMS...ESPECIALLY AT THE INTERSECTION OF THE WARM FRONT AND THE MAIN CONVECTIVE BOW ASSOCIATED WITH THE MCV. THIS LOCATION WOULD BE MORE CONDUCIVE TO THE ROTATING STRONG UPDRAFTS NECESSARY TO SUPPORT LARGE HAIL. THE CONVECTIVE ACTIVITY HAS A STRONG DIURNAL INFLUENCE...SO...EXPECT THAT THE STORMS SHOULD BEGIN TO DIMINISH IN INTENSITY TOWARD SUNSET. THE CURRENT SEVERE THUNDERSTORM WATCH IS IN EFFECT THROUGH 01Z...AT WHICH TIME THE STORMS SHOULD EITHER WEAKEN OR PUSH EAST OF THE NWRN INDIANA COUNTIES OF THE CWA. Link to comment Share on other sites More sharing options...
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