kbotc Posted June 30, 2014 Share Posted June 30, 2014 I think it looks a bit like rotation forming near Wall Lake, IA Link to comment Share on other sites More sharing options...
Chicago Storm Posted June 30, 2014 Share Posted June 30, 2014 1033 AM TSTM WND DMG WINNEBAGO 42.24N 96.47W 06/30/2014 THURSTON NE EMERGENCY MNGR TRAILER HOME ON ITS SIDE. ROOF OF A HOUSE BLOWN OFF AND A FIREWORK TENT WITH PEOPLE INSIDE BLOWN DOWN. UNKNOWN IF ANY INJURIES AT THIS TIME. Link to comment Share on other sites More sharing options...
Geos Posted June 30, 2014 Share Posted June 30, 2014 Definitely quite a few debris clouds over the Racine area. Currently 80°/70°. Link to comment Share on other sites More sharing options...
Central Illinois Posted June 30, 2014 Share Posted June 30, 2014 its really cleared off nicely here in the past 30 mins Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 With that bow in the NE/IA area, we're in the early stages of what could be a very impressive damaging wind event imo. No reason it shouldn't maintain itself for many hours and by the time it heads toward the Chicago metro area, it may begin to take advantage of the nocturnally strengthening low level jet. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 Definitely quite a few debris clouds over the Racine area. Currently 80°/70°. recovery when it happens should be rapid...flow is going to strengthen out ahead of the low and organizing MCS that pesky cell in C. IL finally died so we should start to burn off this debris as well Link to comment Share on other sites More sharing options...
wxsniss Posted June 30, 2014 Share Posted June 30, 2014 Good clearing underway in Madison WI area Still looking for discrete sups ahead of this developing MCS Link to comment Share on other sites More sharing options...
kbotc Posted June 30, 2014 Share Posted June 30, 2014 Good clearing underway in Madison WI area Still looking for discrete sups ahead of this developing MCS I'm watching the boundary near Mount Pleasant, IA at the moment. Link to comment Share on other sites More sharing options...
Photographer Posted June 30, 2014 Share Posted June 30, 2014 Still cloudy here in Aurora. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 MOD risk expanded...which make sense given what looks like textbook MCS development underway massive area of hatch 45% winds...wouldn't be surprised to see that upgraded again once exact evolution is nailed down Link to comment Share on other sites More sharing options...
King James Posted June 30, 2014 Share Posted June 30, 2014 Definitely quite a few debris clouds over the Racine area. Currently 80°/70°.a bit south of MDW and that is the case here as well. Clouds and 80 degrees Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Link to comment Share on other sites More sharing options...
Wmsptwx Posted June 30, 2014 Share Posted June 30, 2014 Iowa City reporting sun. Link to comment Share on other sites More sharing options...
Geos Posted June 30, 2014 Share Posted June 30, 2014 Yeah the clouds are starting to fizzle in the local region. Link to comment Share on other sites More sharing options...
geddyweather Posted June 30, 2014 Share Posted June 30, 2014 ...CENTRAL PLAINS TO MID/UPPER MS VALLEY AND LOWER MI... REF SPC WWS 371-372 AND RELATED MESOSCALE DISCUSSIONS FOR LATEST NEAR-TERM INFO ON CONVECTION FROM WRN NEB TO CENTRAL IA. EARLIER TSTMS OVER NRN/ERN IA HAVE PRODUCED PRONOUNCED OUTFLOW BOUNDARY THAT APPEARS TO FOCUS SVR POTENTIAL MORE TIGHTLY OVER IA...FOR MIDDAY THROUGH AFTN WITHIN MDT RISK AREA...AND WHICH ALSO INCREASES RISK OF SIGNIFICANT TORNADOES. VERY LARGE/DAMAGING HAIL STILL IS LIKELY FROM ANY SUSTAINED SUPERCELLS. OUTFLOW BOUNDARY HAS BECOME ALIGNED CLOSE TO OR JUST RIGHTWARD OF MEAN FLOW...AND MAY BE REINFORCED LOCALLY BY CONVECTION NOW MOVING EWD OUT OF ERN NEB. ANY RELATIVELY DISCRETE SUPERCELL ALONG OR JUST N OF THAT BOUNDARY MAY HAVE SUSTAINED ACCESS TO VORTICITY-RICH AND DIABATICALLY DESTABILIZED AIR WITH SFC DEW POINTS LOW-MID 70S F...CONTRIBUTING TO MLCAPE 4000-5000 J/KG. SIMILARLY RICH MOISTURE/BUOYANCY WILL EXTEND SWD INTO PRECONVECTIVE WARM SECTOR...SUPPORTING RAPID GROWTH OF ANY FRONTAL CONVECTION. GREATEST JUXTAPOSITION OF STG BUOYANCY AND DEEP SHEAR THIS AFTN SHOULD BE OVER IA...ESPECIALLY WHEN CONSIDERING ENHANCEMENT TO LOW-LEVEL SHEAR/SRH RELATED TO OUTFLOW BOUNDARY. FARTHER E...AIR MASS WILL TAKE LONGER TO RECOVER FROM MORNING CONVECTION/OUTFLOW OVER SRN WI/NRN IL/SWRN LOWER MI AND VICINITY. HOWEVER...SUSTAINED LOW-LEVEL WAA AND AREAS OF AFTN HEATING SHOULD ENABLE THAT PROCESS...WITH WAA CONTINUING IN PRECONVECTIVE REGIME AFTER 00Z. AS SUCH...DAMAGING-WIND THREAT WILL EXTEND INTO THESE REGIONS DURING EVENING INTO TONIGHT...EXCEPT FOR RELATIVE MIN OVER COLD NEAR-SFC MARINE LAYER OF LM. POTENTIAL EXISTS FOR NEB/IA CONVECTION TO EVOLVE UPSCALE AND PRODUCE SWATH OF SIGNIFICANT WIND DAMAGE -- PERHAPS WITH ENOUGH LATERAL/AREAL EXTENT TO CLASSIFY AS PROGRESSIVE DERECHO -- EWD AS FAR AS SWRN SHORES OF LM. Link to comment Share on other sites More sharing options...
The_Doctor Posted June 30, 2014 Share Posted June 30, 2014 Can see patches of blue skies to the west. This evening has potential to be epic Link to comment Share on other sites More sharing options...
Stebo Posted June 30, 2014 Share Posted June 30, 2014 Max MCS gust over under 85? Way late to the party, but I wouldn't be shocked if there was a triple digit report. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 Way late to the party, but I wouldn't be shocked if there was a triple digit report. go big or go home, huh stebo Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Latest outlook mentions derecho more than once. Pending organizational trends the rest of the afternoon, I wouldn't be surprised to see a high risk area/60% hatched wind later. Link to comment Share on other sites More sharing options...
Stebo Posted June 30, 2014 Share Posted June 30, 2014 go big or go home, huh stebo Tons of wind shear and 5000 J/kg SBCAPE, not as bold of a call as one might think. Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Way late to the party, but I wouldn't be shocked if there was a triple digit report. Me either (assuming storm surveys count and the gust not needing to be measured). Link to comment Share on other sites More sharing options...
tornadotony Posted June 30, 2014 Share Posted June 30, 2014 Latest outlook mentions derecho more than once. Pending organizational trends the rest of the afternoon, I wouldn't be surprised to see a high risk area/60% hatched wind later.Starting to clear out here. Would expect pink on the cat map down I80 across IA, IL, and NWI at 20z. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 Starting to clear out here. Would expect pink on the cat map down I80 across IA, IL, and NWI at 20z. you stayed in NWI? Link to comment Share on other sites More sharing options...
Stebo Posted June 30, 2014 Share Posted June 30, 2014 Me either (assuming storm surveys count and the gust not needing to be measured). Yeah good point, I was leaning more on surveys, I mean you might get a mesonet report that high but most of the triple digit reports from derechos come after surveying. Link to comment Share on other sites More sharing options...
Chicago WX Posted June 30, 2014 Share Posted June 30, 2014 12z SPC WRF has this... ...and then it does that weaken/turn southeast thing again (for IL/IN purposes). But as noted by those in the know, it hasn't been the best lately. Link to comment Share on other sites More sharing options...
Hvward Posted June 30, 2014 Share Posted June 30, 2014 Storms converging near Dana, IA look interesting. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 Storms converging near Dana, IA look interesting. i've been watching that cell get pulled north for a while now Link to comment Share on other sites More sharing options...
hawkeye_wx Posted June 30, 2014 Share Posted June 30, 2014 Iowa City has jumped to 84/77 at noon. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 Iowa City has jumped to 84/77 at noon. yeah, clearning over E. IA and into IL is really improved and the cirrus push from the main complex has slowed. You're going to get smoked. Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 12z SPC WRF has this... refd_1000m_f09.gif refd_1000m_f10.gif refd_1000m_f11.gif refd_1000m_f12.gif ...and then it does that weaken/turn southeast thing again (for IL/IN purposes). But as noted by those in the know, it hasn't been the best lately. Monster updraft helicity with that thing. One of the more impressive runs I can recall in that regard. Link to comment Share on other sites More sharing options...
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