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Everything posted by Chinook
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A large storm system on Monday night will most likely be a close call for heavy snow at Fort Collins and Estes Park.
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low-instability severe squall came though here around 11:00AM. At the time I didn't realize there would be this storm report of over 82mph over the Lake
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The 500mb anomaly, shown here with Jan 10th-Mar 30th, highlights the exact area with the most precipitation this year: mid-California
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2023 Mid-Atlantic Severe Wx Thread (General Discussion)
Chinook replied to Kmlwx's topic in Mid Atlantic
Was that Upper Freehold, Pennsylvania? I'm not familiar with where this tornado warning took place.- 2,785 replies
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2023 Mid-Atlantic Severe Wx Thread (General Discussion)
Chinook replied to Kmlwx's topic in Mid Atlantic
for those interested, this was a tornado reported by a spotter(s) at 6:01 and 6:06, Bridgeville. I am not sure if it was a tornado after 6:06PM- 2,785 replies
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Debris is directly over I-65, probably large tornado
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I wonder if we will have a significant tornado get going in western Illinois as per the 03z HRRR updraft helicity (hour 17-18)
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12z HRRR significant tornado parameter. The 12z 3km NAM has this entire field of instability farther west into Missouri and Iowa.
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With the GFS right now, it seems like this would be a northern threat somewhat removed from a southern threat. The 00Z ECMWF doesn't really have the same exact setup. The low pressure placement at 00z (Apr. 1, or, 8:00PM eastern on the evening of Mar. 31) is kind of different from the GFS. Along with this, the surface winds to perhaps 850mb winds much more in the realm of southwesterly rather than southerly. I think there is certainly some disagreement as to the synoptic features.
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I think this was Fort Collins' largest snowstorm of the year, (11" at Windsor, not shown) and apparently this was a surprise snow band
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Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
It looks like the 0-1km SRH will be increasing a lot from +2hr to +6hr on the SPC mesoanalysis (23z to 03z). I must say that the current STP is very high at a value of 4, and that same value will shift eastward. -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
I didn't really expect this to go to MODERATE at mid-day, but certainly the deep-layer shear is there 6-hr mesoanalysis (RAP) forecast of STP with the radar from (I believe) the HRRR 6hr forecast -
17" at Neenah (near Appleton)
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Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
basically that would convert to 131.1mph one way and 131.1mph the other way. But hey. that's like Cat-4 tornado (113kt-137kt) -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
Yes, I got the same thing, it's 262.8mph, and effectively I haven't ever been able to see the data is this high of quality for this type of delta-v in my life. -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
tornado may have tracked for 31-32 miles already -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
Here's some hype for you. I think there's a high chance of EF1+ tornadoes and significant wind reports after sunset tomorrow. The nighttime severe is always more concerning, as people aren't ready for it. -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
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Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
You could check annual graphics from the SPC going back several years to see the tornadoes in California. example: https://www.spc.noaa.gov/climo/online/monthly/2022_annual_summary.html -
Severe Weather 3-23-23 through 3-26-23
Chinook replied to cheese007's topic in Central/Western States
This radar image from Montebello/Los Angeles tornado from a youtube video from channel "Convective Chronicles" (I recently found this excellent channel)