Radtechwxman Posted July 20, 2017 Share Posted July 20, 2017 Nice discrete supercell in se Iowa. It is in an area of extreme cape. Has a decent couplet. Looks like it might be interacting with a boundary. We going to get another Iowa trollnado? Link to comment Share on other sites More sharing options...
Stebo Posted July 21, 2017 Share Posted July 21, 2017 6 minutes ago, StormChaser4Life said: Nice discrete supercell in se Iowa. It is in an area of extreme cape. Has a decent couplet. Looks like it might be interacting with a boundary. We going to get another Iowa trollnado? Will be some major flash flooding if it doesn't move soon. Storm has been basically in the same spot for a half hour already. Link to comment Share on other sites More sharing options...
cyclone77 Posted July 21, 2017 Share Posted July 21, 2017 26 minutes ago, Stebo said: Will be some major flash flooding if it doesn't move soon. Storm has been basically in the same spot for a half hour already. This storm would have provided a spectacular time lapse from the south or west side of it. Link to comment Share on other sites More sharing options...
Stebo Posted July 21, 2017 Share Posted July 21, 2017 Just now, cyclone77 said: This storm would have provided a spectacular time lapse from the south or west side of it. Yeah not to mention the amount of lightning it is producing, sucks it isn't nighttime, would be a great storm to chase. Link to comment Share on other sites More sharing options...
BuffaloWeather Posted July 21, 2017 Share Posted July 21, 2017 Confirmed EF2 tornado hit my town today, 2 mins from my house, once in 2-3 decade type stuff I think around these parts. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted July 21, 2017 Share Posted July 21, 2017 Looks like a couplet on that Iowa cell. Not the best radar spot though Link to comment Share on other sites More sharing options...
Radtechwxman Posted July 21, 2017 Share Posted July 21, 2017 This will be a dire flood situation for Mt. Pleasant and New London. These echoes keep backbuilding and training. Unreal. These rainfall rates will be profilic with 6000+ cape and ungodly amounts of moisture. My dew hit 82 here today near Peoria. Likely cuz of rain this morning and evapotranspiration from crops Link to comment Share on other sites More sharing options...
Jim Martin Posted July 21, 2017 Share Posted July 21, 2017 Slight risk introduced on the 01z outlook for Iowa for the remainder of tonight. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 17 minutes ago, BuffaloWeather said: Confirmed EF2 tornado hit my town today, 2 mins from my house, once in 2-3 decade type stuff I think around these parts. Was it really EF2? I noticed the discrepancy with the wind speed being listed as 105 mph. They either made an error with the rating or the wind speed. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted July 21, 2017 Share Posted July 21, 2017 Not good for the NE IL flooding Link to comment Share on other sites More sharing options...
BuffaloWeather Posted July 21, 2017 Share Posted July 21, 2017 13 minutes ago, Hoosier said: Was it really EF2? I noticed the discrepancy with the wind speed being listed as 105 mph. They either made an error with the rating or the wind speed. Yeah I'm not sure, maybe get some clarification soon. Link to comment Share on other sites More sharing options...
cyclone77 Posted July 21, 2017 Share Posted July 21, 2017 New storms down near Muscatine (now severe warned) boiling up in the 80 degree dewpoint environment a bit ago. The combination of lots of haze from the humidity, and being out at full 70mm made this pic pretty soft. Link to comment Share on other sites More sharing options...
Radtechwxman Posted July 21, 2017 Share Posted July 21, 2017 4 minutes ago, cyclone77 said: New storms down near Muscatine (now severe warned) boiling up in the 80 degree dewpoint environment a bit ago. The combination of lots of haze from the humidity, and being out at full 70mm made this pic pretty soft. Incredible pic man. My buddy had an incredible pic of that cell by Mt. Pleasant Link to comment Share on other sites More sharing options...
hlcater Posted July 21, 2017 Share Posted July 21, 2017 10 minutes ago, cyclone77 said: New storms down near Muscatine (now severe warned) boiling up in the 80 degree dewpoint environment a bit ago. The combination of lots of haze from the humidity, and being out at full 70mm made this pic pretty soft. Interesting that you can see the evapotranspiration coming off the crop fields. Link to comment Share on other sites More sharing options...
Jim Martin Posted July 21, 2017 Share Posted July 21, 2017 Is it me, or is tonight's run of the NAM (3k) seem a bit slower for tomorrow's action? Link to comment Share on other sites More sharing options...
Jim Martin Posted July 21, 2017 Share Posted July 21, 2017 The night getting more active across Iowa. Link to comment Share on other sites More sharing options...
cyclone77 Posted July 21, 2017 Share Posted July 21, 2017 Nice downpour with the severe warned storm that rolled in. Had a few gusts close to 40mph and a lot of intra-cloud lightning. Picked up 0.35" so far. Link to comment Share on other sites More sharing options...
JoJo Posted July 21, 2017 Share Posted July 21, 2017 I think we will see an enhanced risk in the Midwest tomorrow and maybe in OH/PA area on Saturday depending on the previous days storms Link to comment Share on other sites More sharing options...
Chicago Storm Posted July 21, 2017 Author Share Posted July 21, 2017 Wednesday's derecho was sig and affected 8 states... Link to comment Share on other sites More sharing options...
CheeselandSkies Posted July 21, 2017 Share Posted July 21, 2017 Beginning to get quite concerned for this evening. 3KM NAM has been very persistent in tracking a large MCS along roughly the same path as Wednesday's, with some very strong UH values implying at least widespread damaging winds. Forecast sounding 0-3 and 0-1 KM SRH and EHI values are quite high into southwest and south-central WI though, higher than I've seen on some days with considerably higher tornado probability in the SPC outlook. Even if that threat doesn't materialize, damaging winds combined with heavy rain/saturated ground will likely mean numerous downed trees and power outages. Some areas of southwest and south-central WI, especially the Baraboo River valley in Sauk County will be flirting with 2008 river levels if we get much more rain tonight. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 Tonight/early tomorrow looks like the prime time of concern in the flooded area of WI/IL. After Saturday AM, it looks like the boundary gets shoved far enough south to reduce the threat. Link to comment Share on other sites More sharing options...
tuanis Posted July 21, 2017 Share Posted July 21, 2017 1 hour ago, Hoosier said: Tonight/early tomorrow looks like the prime time of concern in the flooded area of WI/IL. After Saturday AM, it looks like the boundary gets shoved far enough south to reduce the threat. Latest hi res model depictions not looking pretty. I'm just hoping things are relatively progressive and don't sit and train over us like last week. The orientation of the LLJ later tonight is concerning. Link to comment Share on other sites More sharing options...
BuffaloWeather Posted July 21, 2017 Share Posted July 21, 2017 15 hours ago, Hoosier said: Was it really EF2? I noticed the discrepancy with the wind speed being listed as 105 mph. They either made an error with the rating or the wind speed. Confirmed today of EF 2 rating with a 5 mile track 700 foot wide path through some of Buffalos most populated suburbs. Basically hit some of the hardest hit areas of the nov 2014 snowstorm. There was even a travel ban for Hamburg and orchard park yesterday, I've never seen that aside from snowstorms here. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 28 minutes ago, tuanis said: Latest hi res model despictions not looking pretty. I'm just hoping things are relatively progressive and don't sit and train over us like last week. The orientation of the LLJ later tonight is concerning. Yeah, overall signals aren't good. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 23 minutes ago, BuffaloWeather said: Confirmed today of EF 2 rating with a 5 mile track 700 foot wide path through some of Buffalos most populated suburbs. Basically hit some of the hardest hit areas of the nov 2014 snowstorm. There was even a travel ban for Hamburg and orchard park yesterday, I've never seen that aside from snowstorms here. Looks like they are still going with a 105 mph EF2. I have to say I've never seen something like that where the estimated wind speed falls into a different category, and I'm surprised they are even allowed to do that. The survey text wasn't that detailed so I'm wondering what the EF2 damage was based on. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 Day 1 enhanced risk was expanded eastward and shifted south. Link to comment Share on other sites More sharing options...
hawkeye_wx Posted July 21, 2017 Share Posted July 21, 2017 Not surprising the late-day action has been shifted south. The convection has hung on over northern Iowa through midday and clouds are pretty thick across the northern half of the state. The latest sat loop shows a significant outflow boundary sinking south through Cedar Rapids. Earlier peeks of sun had us up into the 80s, but we just fell back to the mid/upper 70s behind the boundary. Southern Iowa is currently in the 90s. My area may be in the right spot for some severe cells later. Edit: There is also a little spin over se SD and some little cells are bubbling up near Sioux City, so this could be a player later. Link to comment Share on other sites More sharing options...
geddyweather Posted July 21, 2017 Share Posted July 21, 2017 1 hour ago, Hoosier said: Looks like they are still going with a 105 mph EF2. I have to say I've never seen something like that where the estimated wind speed falls into a different category, and I'm surprised they are even allowed to do that. The survey text wasn't that detailed so I'm wondering what the EF2 damage was based on. Yeah, I'm not sure on that either. Thought maybe it was an error at first. The images coming from that parking lot in BuffaloWeather's links are definitely impressive, with branches embedded in leather car seats, and what appears to be plywood (?) driven underneath the window of a red Subaru. Perhaps that's what garnered the EF2 rating? Even so, the estimated winds being UNDER EF2 rating is puzzling. Link to comment Share on other sites More sharing options...
Hoosier Posted July 21, 2017 Share Posted July 21, 2017 Rockford about to get hit. Link to comment Share on other sites More sharing options...
homedis Posted July 21, 2017 Share Posted July 21, 2017 Rockford about to get hit.Warned for 70, clocking 73 on radarscope. Headed straight for me if it continues in strength Link to comment Share on other sites More sharing options...
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