SoundingCast
548 posts

SoundingCast
@SoundingCast
Self-Made Algorithm That Forecasts Tornadoes Using Soundings
Ames, IA 가입일 Ekim 2024
13 팔로잉55 팔로워


Possible brief spinup SW of Murray at approximately 6:33 pm. It lasted about 10 seconds. @NWSDesMoines
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@SoundingCast @OHWXisweird thank you for the insight, 0z little rock hodograph on december 11 2021
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@MassachusettsWx When does the NAM 3km not give a linear mode though? 🤣
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With respect to last night's convection episode in Oklahoma/Texas. Here's the 2 top models RRFSA is up against. HRRR and NAM 3km! While RRFS didn't have linear mode convection over OK, it did well on the lead wave, NAM3k seemingly did best with the line, out of the 3, but flopped the lead cell. HRRR did well with the structure of storms.



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@OHWXisweird March 5, 2022 (Winterset EF4) by comparison had steeper mid and upper level lapse rates with more shear between 1 and 6 km. Slightly more backed winds near the surface also helps.

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@OHWXisweird If you ask me the lack of a closed low at 500mb for this particular instance resulted in 500mb temps being a little warmer than ideal. There’s also not a lot of shear between 1 and 6km, which combined with veered low level winds definitely lowered the tornado risk in my opinion.
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@tornadotrx @BenWx_Official Wouldn’t it be cooler because it’s not the most unstable air parcel? I would think both SB and MU parcels are adjusted for virtual temperature.
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@Drewshearer444 A strong tornado occurred last year with a similar T/Td spread and weak low level shear. Not a critique, as it has different implications on this type of setup. Just a fun note.

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With the 20z ILX sounding observed, there is virtually no tornado threat given 30+ T/Td spread and weak low-level shear. As seen with much better hodographs from KCLE VWP, any tornado threat will likely be central/eastern OH into PA.


Andrew Shearer@Drewshearer444
The 18z DVN and DTZ (well North of the front) show a pretty stout EML advecting into the region. The western edge of the enhanced area will likely not be able to convect, except right on the front, given the capping in place. A conditional tornado threat may develop further east.
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