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May 6-9, 2024 | POTENTIAL OUTBREAK 🌪


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3 minutes ago, StormfanaticInd said:

Can confirm. Sun is out in full force

I know ILN said it wouldn’t really matter clouds wouldn’t have much of an impact on the severity but certainly the clearing isn’t helping anything 🙃

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2 hours ago, OHValleysnow said:

 

Seeing this reminds me of the Memorial Day outbreak. We had a round of rain around 4 or 5 pm that day with greater instability moving in behind it. As we all know all hell broke loose that night. 

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2 minutes ago, snowlover2 said:

Seeing this reminds me of the Memorial Day outbreak. We had a round of rain around 4 or 5 pm that day with greater instability moving in behind it. As we all know all hell broke loose that night. 

Will be really interested to see what the sounding results are here in a few hours from that special launch. 

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Back edge of cloud cover with a following significant area of
clearing is already at the western border of the CWA. This
feature continues the earlier train of thought regarding severe
potential this afternoon.

Previous discussion(s) remain valid:

Parameters of significant shear and instability remain in place
this afternoon for severe weather. This is an all-mode severe
weather threat with damaging winds, large hail, isolated
flooding, and tornados. Tornado parameters per SPC and some AI
forecasts have the entire CWA with a potential of significant
tornados >EF2. The AI enhances a more narrow corridor running
sw-ne through Cincy metro area, curving northward into Dayton
metro area.

As a shortwave is ejected northeast from the southern Plains
into the Ohio Valley, an increase in mid-level flow and backing
low-level winds will be seen in the vertical profile by later
in the afternoon. A surge in warm, humid air should occur just
ahead of the shortwave`s arrival. Forecast soundings continue to
indicate surface CAPEs approaching 2,500 J/kg and effective
shear around 60 knots. In addition, curved hodographs lead to
effective SRH exceeding 200 m^2/s^2.

Without a discrete forcing mechanism this afternoon and evening,
scattered, discrete supercells are likely to develop.
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Posted (edited)
2 minutes ago, OHValleysnow said:

So what are the chances ILN will put us under a tornado watch?  I'd think Sw Ohio and northern Ohio should be.

Good chance but it'll probably be late afternoon-early evening if it does happen...

Edited by Central Illinois
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2 minutes ago, OHValleysnow said:

So what are the chances ILN will put us under a tornado watch?  I'd think Sw Ohio and northern Ohio should be.

Unfortunately it's looking like evening. 

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