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Everything posted by Chinook
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I think there's kind of a consensus that looks like the last severe squall line on 7/20, such that several storms develop in Michigan and then go east into Ontario, and more south from there. The WRF-NSSL has a lot more development, breaking the cap, I suppose, into Ohio and Indiana. That's the thing. The 12km NAM predicts a capping inversion of 1 degree C in Indiana, which could be a reason that not a lot gets going. But that's the reason that SPC highlights a blob-shaped area every single day. Because convective development is not that easy to figure out.
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Hi-res reflectivity from 2004? crazy. The enhanced outlook was a little bit of a surprise for me, but I did see the higher winds at 850-500mb in yesterdays models. and now, the convection-allowing models show much more on the thunderstorm coverage. I suppose you could say the NADOcast is just taking into account the higher low level 850mb winds and wind shear values, which is something that increases tornado potential.
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
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ConvectiveChronicles did a 17min video on the surprise NC tornado
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
Things could get stormy tomorrow. Today's 12km NAM had 3900 J/kg of CAPE in NW Ohio. The models seem to vary on the 0-6km shear of 30kt up to 45 kt (the 18z NAM), which is quite good for summer, but storm relative helicity should not be remarkable. 12km NAM has up to 73 dew points in Indiana. -
The CoCoRAHS station nearest me had 5.16" from June 20-July 19. It had 1.34" from May 21-June 20.
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Now it was 128 at Death Valley CA climate station on the 16th. That's just some incredible heat. I wonder how many people drive there and realize their air conditioning can't keep up and have it 85-90 in the car.
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This is a stretch of 110's that I seriously would not want to happen to me. Do you want to know something else that's crazy? If this month's Phoenix temperature of 101.2 was compared to Phoenix 1951-1980 data, it would be 8.9 degrees F above normal. Phoenix (Sky Harbor) Late June Phoenix (Sky Harbor) July
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My place has had some late night warm-frontish showers last night at 10:30. Starting this morning, there was steady rain, some of which was moderate. That has mainly stopped. There still hasn't been lightning in these two days. It's just incredible, there's been like 2 days of lightning this summer. I guess Thor went elsewhere.
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
Here is the southern Michigan EF-1 tornado damage assessment. this isn't too far from where my Mom's home town is. -
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In the past 365 days since I've been gone, you guys scooped up all the drought in the West and mooshed it over to Missouri, Kansas, Iowa, Nebraska, Wisconsin
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
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2023 Short/Medium Range Severe Weather Discussion
Chinook replied to Chicago Storm's topic in Lakes/Ohio Valley
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This 12-hour precipitation estimation shows the impact of the overnight MCS, starting in South Dakota and now in Iowa. There were severe wind reports in northeast Nebraska and around Sioux Falls, South Dakota. The big MCS right now appears to have been from two merged MCSs that were kind of separate at 12:50z. Otherwise, there were numerous areas of rain in IL, IN, and OH.
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radar at 3:34 shows the flash floods are scattered from northern New Hampshire (not shown on map) to Raleigh-Durham with perhaps multiple dangerous situations in NY/PA
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it makes you wonder about the human impact. The storm tracked through Karval (almost), Haswell, Wiley and Lamar. I wonder who was outside their homes or walking outside at 8PM-10PM in those places. Or, what livestock might have gotten injured.
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The big storms of the night are probably getting going right now around Hugo, Colorado. Effective wind shear is pretty nuts right now.