ILSNOW Posted April 12, 2014 Share Posted April 12, 2014 My brother, northeast of Lake Zurich, just reported 0.75" hail (plus tons of pea size) and 60+ mph wind. same here with the hail but no wind. Link to comment Share on other sites More sharing options...
Geos Posted April 12, 2014 Share Posted April 12, 2014 Area within a few miles of Lake Cook Rd getting rocked. Almost done raining here. Link to comment Share on other sites More sharing options...
The_Doctor Posted April 12, 2014 Share Posted April 12, 2014 Excluding a small expansion of the 30% hail probs, no big changes to the 1630 SPC outlook around here. Link to comment Share on other sites More sharing options...
Stebo Posted April 12, 2014 Share Posted April 12, 2014 Damn there is a lot of hail reports out of that cell, GR2 has 19 just in the last hour with it, 15 that are 1.00" or greater. Link to comment Share on other sites More sharing options...
ILSNOW Posted April 12, 2014 Share Posted April 12, 2014 Area within a few miles of Lake Cook Rd getting rocked. Almost done raining here. thats by me and we did at the height grass was almost completely covered with hail> Link to comment Share on other sites More sharing options...
Stebo Posted April 12, 2014 Share Posted April 12, 2014 I am actually a bit surprised there weren't more big reports, that storm had 60+ dBZ over 20000' at a few points during the last 90 minutes. Then again whoever is spotting on the storm probably didn't want to go into the hail core and get hit with golf balls or greater. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted April 12, 2014 Share Posted April 12, 2014 Just north of belvidere. Still lots of quarters and larger on the ground, and hour us after storm. Link to comment Share on other sites More sharing options...
Thundersnow12 Posted April 12, 2014 Share Posted April 12, 2014 Easily worth the trip up to Algonquin. Link to comment Share on other sites More sharing options...
Stebo Posted April 12, 2014 Share Posted April 12, 2014 Easily worth the trip up to Algonquin. image.jpg Very nice Link to comment Share on other sites More sharing options...
Hoosier Posted April 12, 2014 Share Posted April 12, 2014 Just north of belvidere. Still lots of quarters and larger on the ground, and hour us after storm. Nice pic. Looks like some hail fog in the distance. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted April 12, 2014 Share Posted April 12, 2014 Nice pic. Looks like some hail fog in the distance. Sure was. Hung just high enough off the groubd that I almost missed the stop sign. Link to comment Share on other sites More sharing options...
MidwestChaser Posted April 12, 2014 Share Posted April 12, 2014 Dewpoint is rapidly rising; 20 degree rise since 9 so far. Link to comment Share on other sites More sharing options...
Geos Posted April 12, 2014 Share Posted April 12, 2014 0.26" of rain here with a little pea sized hail. Never did get any winds above 10mph. Link to comment Share on other sites More sharing options...
The_Doctor Posted April 12, 2014 Share Posted April 12, 2014 Wow at this report 1025 AM TSTM WND DMG 5 WNW MARENGO 42.28N 88.69W04/12/2014 MCHENRY IL PUBLICLARGE GRAIN AUGERS RIPPED FROM TOP OF GRAINBINS...SHINGLES PEELED OFF ROOFS...IRRIGATION SYSTEMSBLOWN OVER...BARNS BLOWN DOWN AND A BRANCH STUCK INTO THESIDE OF A HOUSE. REPORT VIA FACEBOOK. Link to comment Share on other sites More sharing options...
MidwestChaser Posted April 12, 2014 Share Posted April 12, 2014 Maybe a small tornado? Link to comment Share on other sites More sharing options...
The_Doctor Posted April 12, 2014 Share Posted April 12, 2014 Maybe a small tornado? Could've been; huronicane posted an image of a hook on radar that might have approached that area. Link to comment Share on other sites More sharing options...
Indystorm Posted April 12, 2014 Share Posted April 12, 2014 SB CAPE 1000-2000 now over most of IA. Most likely threat is hail with lapse rates as they are, but a little surprised to see the Sig Tor at 1 over part of the IL/WI border, even with the strong helicity currently shown. All parameters per current SPC meso page. Link to comment Share on other sites More sharing options...
OceanStWx Posted April 12, 2014 Share Posted April 12, 2014 SB CAPE 1000-2000 now over most of IA. Most likely threat is hail with lapse rates as they are, but a little surprised to see the Sig Tor at 1 over part of the IL/WI border, even with the strong helicity currently shown. All parameters per current SPC meso page. Leading edge of the EML is just arriving, so CAPE should continue up. Real agitated look to the satellite north of DSM on the north side of Highway 20. Link to comment Share on other sites More sharing options...
Hoosier Posted April 12, 2014 Share Posted April 12, 2014 Could've been; huronicane posted an image of a hook on radar that might have approached that area. Report sounds interesting but it was in a pretty inhospitable environment for tornadoes with relatively cool temps and T/Td spreads on the high side. Strange things happen sometimes though. Link to comment Share on other sites More sharing options...
A-L-E-K Posted April 12, 2014 Share Posted April 12, 2014 yeah environment was trash for twisters but that report is impressive, especially considering the general lack of straight line wind reports with the storm. Link to comment Share on other sites More sharing options...
The_Doctor Posted April 12, 2014 Share Posted April 12, 2014 MESOSCALE DISCUSSION 0324NWS STORM PREDICTION CENTER NORMAN OK0230 PM CDT SAT APR 12 2014AREAS AFFECTED...IOWA INTO PARTS OF SRN WISCONSIN/NRN ILLINOISCONCERNING...SEVERE POTENTIAL...WATCH LIKELYVALID 121930Z - 122130ZPROBABILITY OF WATCH ISSUANCE...80 PERCENTSUMMARY...SEVERE STORM DEVELOPMENT APPEARS INCREASINGLY LIKELYACROSS THE REGION DURING THE 22-00Z TIME FRAME. LARGE HAIL MAY BETHE PRIMARY THREAT..AT LEAST FOR THE FIRST FEW HOURS...BUT SOME VERYLARGE HAIL IS POSSIBLE...AND A SEVERE THUNDERSTORM WATCH PROBABLYWILL BE ISSUED WITHIN THE NEXT HOUR OR SO.DISCUSSION...BENEATH THE NOSE OF WARM ELEVATED MIXED LAYER AIRADVECTING EAST NORTHEAST OF THE CENTRAL PLAINS/MID MISSOURI VALLEYREGION...THE INCREASINGLY WELL MIXED AND DEEPENING BOUNDARY LAYERCONTINUES TO DESTABILIZE. DESPITE SEASONABLY MODEST MOISTURE...WITHSURFACE DEW POINTS IN THE MID 50S...MAXIMUM MIXED LAYER CAPE APPEARSLIKELY TO EXCEED 2000 J/KG BY LATE AFTERNOON...IN THE PRESENCE OFRELATIVELY STEEP MID-LEVEL LAPSE RATES.A GRADUAL WEAKENING OF INHIBITION APPEARS UNDERWAY WITH CONTINUEDINSOLATION...AND THIS APPEARS LIKELY TO BE AUGMENTED BY AT LEASTSUBTLE COOLING IN MID-LEVELS /AROUND 700 MB/ DURING THE NEXT FEWHOURS. THE CONSENSUS OF MODEL GUIDANCE REMAINS SUGGESTIVE THAT THISWILL LEAD TO INCREASING STORM DEVELOPMENT DURING THE 22-00Z TIMEFRAME.THE LATEST HIGH RESOLUTION RAPID REFRESH OUTPUT...AT LEAST SOMEWHATSUPPORTED BY OBSERVATIONAL DATA...SUGGEST ACTIVITY COULD INITIATEFIRST NEAR/SOUTH THROUGH EAST OF MASON CITY IA...IN THE VICINITY OFTHE INTERSECTION OF A REMNANT CONVECTIVELY ENHANCED FRONTAL ZONE ANDA LEE SURFACE TROUGH EXTENDING NORTHEASTWARD FROM THE CENTRALPLAINS. SUBSEQUENT DEVELOPMENT THEN APPEARS PROBABLE SOUTHWESTWARDALONG THE TROUGH...TOWARD THE MID MISSOURI VALLEY.ALTHOUGH LOW-LEVEL FLOW/SHEAR IS GENERALLY WEAK...DEEPER LAYER SHEARBENEATH 30-50 KT WEST SOUTHWESTERLY 500 MB FLOW IS SUFFICIENT FORORGANIZED CONVECTION...INCLUDING SUPERCELLS. AT LEAST FOR THE FIRSTFEW HOURS...LARGE HAIL IS PROBABLY THE PRIMARY SEVERE THREAT...BUTIT DOES APPEAR THAT SOME OF THIS COULD BECOME RATHER SIZABLE...WITHLARGEST HAILSTONES POSSIBLY EXCEEDING 2 INCHES IN DIAMETER...KERR/HART.. 04/12/2014ATTN...WFO...MKX...DVN...ARX...DMX...FSD...OAX...LAT...LON 41999584 42899468 43429351 42818933 41829004 4103949341999584 Link to comment Share on other sites More sharing options...
Chinook Posted April 12, 2014 Share Posted April 12, 2014 the 17z HRRR breaks out some heavy storms in IA, WI, northern IL in the time frame 23z to 08z. (most of the run of the HRRR.) Link to comment Share on other sites More sharing options...
Brewers Posted April 12, 2014 Share Posted April 12, 2014 A cell has developed SW of Decorah IA, already some lightning with it. Link to comment Share on other sites More sharing options...
The_Doctor Posted April 12, 2014 Share Posted April 12, 2014 A watch was issued Link to comment Share on other sites More sharing options...
huronicane Posted April 12, 2014 Share Posted April 12, 2014 yeah environment was trash for twisters but that report is impressive, especially considering the general lack of straight line wind reports with the storm. When I was watching the radar, there were some good velocity signatures for some downburst winds Link to comment Share on other sites More sharing options...
OceanStWx Posted April 12, 2014 Share Posted April 12, 2014 PWATs aren't overly impressive, but the flow will likely lead to prolonged periods of training storms through the evening. Wouldn't be surprised to see some FFWs regardless. Link to comment Share on other sites More sharing options...
Stebo Posted April 12, 2014 Share Posted April 12, 2014 The storm that went through Newaygo County had 80mph estimated winds and flipped a plane at the Grant Airport. Link to comment Share on other sites More sharing options...
Whitelakeroy Posted April 12, 2014 Share Posted April 12, 2014 The storm that went through Newaygo County had 80mph estimated winds and flipped a plane at the Grant Airport. Looks like this cell is going my north by just a couple miles. With those type of winds I don't need it as I prefer to keep power!! Link to comment Share on other sites More sharing options...
Powerball Posted April 12, 2014 Share Posted April 12, 2014 Looks like this cell is going my north by just a couple miles. With those type of winds I don't need it as I prefer to keep power!! Maybe not. Looks like you're under a Severe Thunderstorm Warning. The strongest winds actually look to be on the southern edge of those storms, judging from the base radar velocity. Link to comment Share on other sites More sharing options...
andyhb Posted April 12, 2014 Share Posted April 12, 2014 Looks like some rotation on the cell near Parkersburg. Link to comment Share on other sites More sharing options...
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