Hoosier Posted August 18, 2020 Share Posted August 18, 2020 13 minutes ago, cyclone77 said: That gust at 16:15 is just incredible. That had to be over 100mph. I've watched that part of the vid numerous times and the gust hits so hard it almost sends chills down my spine. It's easy to overestimate winds so I tend to lean conservative on estimates, but I'd say there was at least 90-100 mph stuff in there. 2 Link to comment Share on other sites More sharing options...
Hoosier Posted August 18, 2020 Share Posted August 18, 2020 Trying to find a preliminary dollar amount for all of this with not much success, but the idea of a derecho possibly being a several billion dollar disaster is pretty crazy to think about. 1 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 18, 2020 Share Posted August 18, 2020 2 minutes ago, Hoosier said: It's easy to overestimate winds so I tend to lean conservative on estimates, but I'd say there was at least 90-100 mph stuff in there. Yeah I've never seen anything higher than 80 mph in person, so it's sort of a guessing game above that for me. Link to comment Share on other sites More sharing options...
cyclone77 Posted August 18, 2020 Share Posted August 18, 2020 5 minutes ago, Hoosier said: Trying to find a preliminary dollar amount for all of this with not much success, but the idea of a derecho possibly being a several billion dollar disaster is pretty crazy to think about. I'd like to know why the rear-inflow jet seemed to be basically at ground level. I know there's been instances of long-lasting high winds, but I think that is usually over a smaller swath closer to the parent mesovortex. I read somewhere that this almost seemed comparable to an HP supercell with a powerful RFD. In this case the RFD was extremely large. We didn't get the extreme of Cedar Rapids, but I'll never forget the 1hr+ of non-stop severe level winds. 3 Link to comment Share on other sites More sharing options...
DLMKA Posted August 19, 2020 Share Posted August 19, 2020 2 hours ago, Hoosier said: Trying to find a preliminary dollar amount for all of this with not much success, but the idea of a derecho possibly being a several billion dollar disaster is pretty crazy to think about. 10 million acres of crops destroyed. If half was corn and a total loss that’s $3B alone. The other half is soybeans it’s about $2.7B using 200 and 60 bpa as conservative yield estimates. I’m sure not ALL that is total loss but I bet a bunch is. 1 Link to comment Share on other sites More sharing options...
Hoosier Posted August 19, 2020 Share Posted August 19, 2020 23 minutes ago, DLMKA said: 10 million acres of crops destroyed. If half was corn and a total loss that’s $3B alone. The other half is soybeans it’s about $2.7B using 200 and 60 bpa as conservative yield estimates. I’m sure not ALL that is total loss but I bet a bunch is. Then throw in the other damage and we could perhaps be talking something like 7-10 billion. Link to comment Share on other sites More sharing options...
Natester Posted August 19, 2020 Share Posted August 19, 2020 DVN found damage consistent with 140 mph winds in a destroyed apartment complex in SW Cedar Rapids. 1 Link to comment Share on other sites More sharing options...
Chicago Storm Posted August 19, 2020 Author Share Posted August 19, 2020 DVN found damage consistent with 140 mph winds in a destroyed apartment complex in SW Cedar Rapids.Where did you find that info? . Link to comment Share on other sites More sharing options...
Natester Posted August 19, 2020 Share Posted August 19, 2020 https://kamala.cod.edu/offs/KDVN/2008191630.nwus53.html 1 1 Link to comment Share on other sites More sharing options...
A-L-E-K Posted August 19, 2020 Share Posted August 19, 2020 a respectable 140 1 Link to comment Share on other sites More sharing options...
andyhb Posted August 19, 2020 Share Posted August 19, 2020 Multiple other 120+ mph estimates coming out of that survey, including 126 mph at Atkins unofficially measured by a private wx station. We already knew this was a top end event, that just confirms it. 3 1 Link to comment Share on other sites More sharing options...
hlcater Posted August 19, 2020 Share Posted August 19, 2020 1 6 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 19, 2020 Share Posted August 19, 2020 53 minutes ago, hlcater said: I passed through Clinton Iowa/Fulton IL on Monday. Definitely not surprised to see that local area of higher wind estimate pop up as it was pretty bad. I also came across a huge grain silo a little west of Elvira that was caved in quite severely. It's right in line with that corridor of highest winds, although the NWS has 80+mph there. I'll see if I can get that pic on here. EDIT: Here it is.. 2 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 19, 2020 Share Posted August 19, 2020 DVN made a correction to their peak gust there at DVN, from 86 to 87 mph. Link to comment Share on other sites More sharing options...
CheeselandSkies Posted August 20, 2020 Share Posted August 20, 2020 Remarkable how such a violent and historic storm could happen with pretty much no medium or even short-range lead time. Initial Day 1 outlook (as we know) had a marginal risk for the affected area. This after the last two Plains high risks with apocalyptic outlook wording for days fell far short of their ceiling. I know severe local storms are heavily influenced by subtle/mesoscale factors but jeez... * We also just passed the 15th anniversary of the August 18, 2005 Wisconsin tornado outbreak. A state record-setting 27 tornadoes including a long-track F3 that just missed my house occurred on a slight risk day when most of the state was in a "less than 2%" tornado risk as of the 1630Z outlook (most of the outbreak area was upgraded to 5% at 20Z, still not exactly anticipating a regionally historic event). 4 Link to comment Share on other sites More sharing options...
Natester Posted August 20, 2020 Share Posted August 20, 2020 Just got power back after 9 days. Won't have wifi for awhile as the cable lines need to be replaced but I can live with that. Finally nice to have A/C going and the fan. 5 Link to comment Share on other sites More sharing options...
hlcater Posted August 20, 2020 Share Posted August 20, 2020 That 126mph wind gust from Atkins is the new Iowa wind speed record if verified. 1 Link to comment Share on other sites More sharing options...
andyhb Posted August 20, 2020 Share Posted August 20, 2020 19 hours ago, CheeselandSkies said: Remarkable how such a violent and historic storm could happen with pretty much no medium or even short-range lead time. Initial Day 1 outlook (as we know) had a marginal risk for the affected area. This after the last two Plains high risks with apocalyptic outlook wording for days fell far short of their ceiling. I know severe local storms are heavily influenced by subtle/mesoscale factors but jeez... * We also just passed the 15th anniversary of the August 18, 2005 Wisconsin tornado outbreak. A state record-setting 27 tornadoes including a long-track F3 that just missed my house occurred on a slight risk day when most of the state was in a "less than 2%" tornado risk as of the 1630Z outlook (most of the outbreak area was upgraded to 5% at 20Z, still not exactly anticipating a regionally historic event). Summer severe wx prediction has been documented to have less skill than its spring counterpart. Composite parameters and high resolution/convective allowing guidance have less ability when flow becomes more nebulous in the summer, capping is generally stronger over synoptic scales, and forcing is weaker. 1 2 Link to comment Share on other sites More sharing options...
Natester Posted August 20, 2020 Share Posted August 20, 2020 I'm pretty sure hawkeye will get his power back this weekend unless he already has it back. Link to comment Share on other sites More sharing options...
andyhb Posted August 21, 2020 Share Posted August 21, 2020 Holy mother of god. Warning: viewers with headphones might want to lower the volume. Information about where it was filmed. 3 1 Link to comment Share on other sites More sharing options...
hlcater Posted August 21, 2020 Share Posted August 21, 2020 Here's a compilation of all the highest gusts I observed in sequential order. Including one that I believe may have been as high as 120. I had initially pegged it at 100ish, but after seeing damage surveys, other videos in the area and of winds that strong(Irma's eyewall), local measurements(primarily atkins 126), it seems as if marking that gust as 120 isn't necessarily implausible. Essentially, all the gusts were best guess measurements using a similar method to that used on the strongest gust, so I hope that they're fairly accurate and they seemed sound to me. But who knows... 5 Link to comment Share on other sites More sharing options...
hawkeye_wx Posted August 22, 2020 Share Posted August 22, 2020 I just got power back Thursday morning, ten days after the storm. There are still 9k people in the CR area without power. My Mediacom tv/internet is still out (could be up to another week), but my neighbor has a different service, which is working, and she is letting me use her wifi. It has been a long couple weeks. I did a lot of tree cleanup in my yard and surrounding yards. It was exhausting, but there was nothing to do after dark so I got a lot of sleep. It was quite a storm, likely something I'll never see again. It was amazing how it just kept raging for 30-40 minutes. The worst damage I saw, as someone posted earlier in the thread, is in sw Cedar Rapids, a bit over a mile sw of my house, but everyone got hit. I'll post a few photos of my neighborhood when I get my fast internet connection back. 10 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 22, 2020 Share Posted August 22, 2020 2 hours ago, hawkeye_wx said: I just got power back Thursday morning, ten days after the storm. There are still 9k people in the CR area without power. My Mediacom tv/internet is still out (could be up to another week), but my neighbor has a different service, which is working, and she is letting me use her wifi. It has been a long couple weeks. I did a lot of tree cleanup in my yard and surrounding yards. It was exhausting, but there was nothing to do after dark so I got a lot of sleep. It was quite a storm, likely something I'll never see again. It was amazing how it just kept raging for 30-40 minutes. The worst damage I saw, as someone posted earlier in the thread, is in sw Cedar Rapids, a bit over a mile sw of my house, but everyone got hit. I'll post a few photos of my neighborhood when I get my fast internet connection back. Glad things are getting more back to normal there. Definitely a pain in the ass to be sure. Found the location the infamous falling pine tree derecho vid was shot at in Cedar Rapids. It's on Greenfield Street just west of C Ave. This looking back towards the house where vid was captured. 5 Link to comment Share on other sites More sharing options...
RogueWaves Posted August 22, 2020 Share Posted August 22, 2020 13 hours ago, hawkeye_wx said: I just got power back Thursday morning, ten days after the storm. There are still 9k people in the CR area without power. My Mediacom tv/internet is still out (could be up to another week), but my neighbor has a different service, which is working, and she is letting me use her wifi. It has been a long couple weeks. I did a lot of tree cleanup in my yard and surrounding yards. It was exhausting, but there was nothing to do after dark so I got a lot of sleep. It was quite a storm, likely something I'll never see again. It was amazing how it just kept raging for 30-40 minutes. The worst damage I saw, as someone posted earlier in the thread, is in sw Cedar Rapids, a bit over a mile sw of my house, but everyone got hit. I'll post a few photos of my neighborhood when I get my fast internet connection back. Nightmare stuff. Glad to hear from you. Can't imagine the clean-up misery in the heat of the tropics post-major hurricanes, but now you can unfortunately. I'll take a hard pass on a 1st hand at that one. 1 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 22, 2020 Share Posted August 22, 2020 Nothing's gonna compare to the pine tree vid, but these two are pretty good. 3 Link to comment Share on other sites More sharing options...
bowtie` Posted August 23, 2020 Share Posted August 23, 2020 That second video showed just how limber trees can be right at the end of that video. 1 Link to comment Share on other sites More sharing options...
hawkeye_wx Posted August 23, 2020 Share Posted August 23, 2020 3 1 4 Link to comment Share on other sites More sharing options...
OrdIowPitMsp Posted August 24, 2020 Share Posted August 24, 2020 This map gives a great view of how the event evolved from a straight line wind threat to a tornado threat as it moved east. Just incredible stuff. 6 Link to comment Share on other sites More sharing options...
cyclone77 Posted August 27, 2020 Share Posted August 27, 2020 This video is pretty incredible. Might rank up there with the pine tree video. Near the end siding is ripping off the garage he's shooting the video out of. 5 Link to comment Share on other sites More sharing options...
hlcater Posted August 30, 2020 Share Posted August 30, 2020 You're gonna want to watch these 3 videos. They are the most impressive out of any of the video I've seen so far and are easily on par with a significant, perhaps major, hurricane. MANY gusts over 100mph and the sustained winds are the highest I've seen out of any video. 7 Link to comment Share on other sites More sharing options...
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