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March 1-3, 2023 | Severe Weather Outbreak


ElectricStorm

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PDS warned north of Broken Bow.

Quote
Severe Weather Statement
National Weather Service Shreveport LA
623 PM CST Thu Mar 2 2023

OKC089-030030-
/O.CON.KSHV.TO.W.0029.000000T0000Z-230303T0030Z/
McCurtain OK-
623 PM CST Thu Mar 2 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CST FOR NORTHERN
MCCURTAIN COUNTY...

At 622 PM CST, a large and extremely dangerous tornado was located 14
miles north of Broken Bow, or 30 miles northwest of De Queen, moving
northeast at 40 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar indicated rotation.

IMPACT...You are in a life-threatening situation. Flying debris may
         be deadly to those caught without shelter. Mobile homes
         will be destroyed. Considerable damage to homes,
         businesses, and vehicles is likely and complete destruction
         is possible.

Locations impacted include...
Wright City, Glover, Hochatown, Bethel, Battiest, Mount Herman and
Sherwood.

 

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I think tomorrow has the best tornado potential of the entire 3 day event. Any storm that can sustain itself in all of AL, TN, and KY will be in an incredible kinematic environment. There will probably be 500-2000kg CAPE along the whole warm frontal-zone, I wouldn't be surprised to see a tornado-driven moderate tomorrow.

Edited by Neoncyclone
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Mid-level dry air is sneaking around the squall and into the warm sector. That'll squash warm sector potential wherever that pushes. All is fair behind that, but it's just barely ahead of the squall if anything develops.

CODNEXLAB-GOES-East-subregional-Texas-09-01_26Z-20230303_map-plot-glm_flash_noBar-24-1n-5-100.gif

Edited by ClicheVortex2014
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6 minutes ago, DJKuo said:

Check out the latest HRRR maximum updraft helicity in AR

uh03_max.us_ov.png

Now check out the cell that's getting crazy on radar in AR

330232312_136826755707242_5475040988968703315_n.thumb.jpg.aac5b518b65257544ad434834ea8d546.jpg

It's north of the warm front. Dew points there in the upper 50s... south of the warm front is in the upper 60s.

Edited by ClicheVortex2014
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Pretty cool how you can see the tornadic supercell in ArkLaTex significantly weaken with the mid-level dry air moving in, then re-strengthen a bit afterward.

Edit: old loop. Shared this before but I just noticed this

CODNEXLAB-GOES-East-subregional-Texas-09-01_26Z-20230303_map-plot-glm_flash_noBar-24-1n-5-100.thumb.gif.5cdd5f01439abcfa7e31437827b50790.gif

 

Edited by ClicheVortex2014
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Problem with the tornado threat for tomorrow is that it's pretty rare to have a supercell tornado outbreak with a low this deep. There are many reasons for that but the easiest one to cite is inherently strong forcing on the cold front discourages long-lived discrete supercells. HRRR looks really nasty for tomorrow but I'm skeptical that storm mode will work out as favorably. Also hints of a weak mid-level inversion that might weaken the updraft. Any weakening of the updraft raises the concern for a sheared out updraft... especially when you have a sub-980mb low still attached closely to the warm sector.

R5nDFR4.png

z7va9th.png

I also question how much the warm sector will be able to warm. The above images clearly suggest widespread clouds. Are you really gonna get to 72/67 in very early March without the sun?

yFhCY1d.png

Edited by ClicheVortex2014
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Not to live and die by each run, but HRRR now has a linear storm mode for tomorrow. Gotta watch for how far north the warm front goes. Could bring a severe threat as far north as Cincinnati.

974mb low... crazy. Probably overdone but sub-980mb seems reasonable. Very bad situation for Kentucky. 

DVZlIkO.png

Algjf3x.png

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