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June 4-10, 2022 | Severe Storms (Quasi-zonal regime)


ClicheVortex2014

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  • Meteorologist

ILN hasn't updated in a couple hours but so far we're looking at 5 tornadoes in their CWA so far based on their tweets throughout the day. I'm sure there's gonna be more.

 

Edited by ClicheVortex2014
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Enhanced added to TX Panhandle/SW OK for wind.

Quote
  Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0800 PM CDT Thu Jun 09 2022

   Valid 100100Z - 101200Z

   ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM THE TX
   PANHANDLE INTO SOUTHWEST/SOUTH-CENTRAL OK...

   ...SUMMARY...
   Scattered severe thunderstorms capable of large hail and potentially
   intense damaging gusts are expected this evening into late tonight
   across portions of the central and southern Plains.

   ...Central/southern Great Plains...
   Convection is increasing in coverage and intensity this evening
   across parts of western/central Nebraska. Moderate buoyancy and
   favorable deep-layer shear (as noted on the 00Z LBF sounding) will
   support a threat of very large hail with initially discrete storms.
   Low-level shear/SRH is also sufficient to support the risk of a
   tornado or two with any sustained right-moving supercell. Later
   tonight, some upscale growth is possible, with some potential for an
   MCS to develop and move south-southeastward along the instability
   gradient. Should this occur, a corridor of somewhat greater damaging
   wind threat will be possible from central KS into northern OK.

   Storms are also increasing this evening along an outflow boundary
   across the northern TX Panhandle. In the short term, any sustained
   discrete cells will pose a threat of hail (potentially significant)
   and locally severe wind gusts, as they move into region where
   moderate-to-strong buoyancy is in place and effective shear is in
   the 30-40 kt range. A gradually increasing low-level jet will
   support upscale growth later this evening, with an increasing threat
   of severe wind, including the potential for significant (> 65 kt)
   gusts. A brief tornado or two also cannot be ruled out as convection
   moves into a region of richer moisture and favorable low-level shear
   across the eastern TX Panhandle into southwest OK. Confidence in a
   corridor of concentrated severe wind potential is now sufficient for
   an Enhanced Risk from the TX Panhandle into southern OK.

   ..Dean.. 06/10/2022

 

 

day1probotlk_0100_wind.gif

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17 minutes ago, ClicheVortex2014 said:

Sounds like 5 tornadoes is it for ILN's CWA. Still have to hear from PBZ and RLX for the rest of the Ohio tornadoes.

 

Might be 6 after tomorrow. They might still do a survey in Hocking County.

Quote
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
422 PM EDT THU JUN 9 2022

...DAMAGE BEING ASSESSED FOR POSSIBLE SURVEY NEAR SOUTH 
BLOOMINGVILLE IN HOCKING COUNTY OHIO...

THE NATIONAL WEATHER SERVICE OFFICE IN WILMINGTON OH IS AWARE OF,
AND REVIEWING, DAMAGE FROM SOUTHERN HOCKING COUNTY TO DETERMINE 
THE NEED FOR A POTENTIAL SURVEY. IF A SURVEY IS TO BE CONDUCTED, 
IT WOULD NOT OCCUR UNTIL FRIDAY, JUNE 10. THE NATIONAL WEATHER
SERVICE WILL WORK WITH LOCAL EMERGENCY MANAGEMENT TO MAKE A FINAL
DETERMINATION. THIS INFORMATION IS IN RELATION TO THE SEVERE 
THUNDERSTORMS THAT MOVED THROUGH THE AREA ON JUNE 8, 2022.

A FINAL ASSESSMENT IS EXPECTED TO BE COMPLETED AND TRANSMITTED 
VIA A PUBLIC INFORMATION STATEMENT ON FRIDAY.

THE STORM SURVEY INFORMATION WILL ALSO BE AVAILABLE ON OUR
WEBSITE AT HTTP://WWW.WEATHER.GOV/ILN

 

 

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  • Meteorologist

So, obviously, this is long-range NAM but this is insane even for Plains standards. Got 90 supercell parameter just northwest of Louisville. 17+ significant tornado parameter. I don't think long-range NAM even produced something like this for the Plains this year.

We can't expect anything as crazy as this but we might be looking at another significant OV event.

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Edited by ClicheVortex2014
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1 hour ago, ClicheVortex2014 said:

Sounds like 5 tornadoes is it for ILN's CWA. Still have to hear from PBZ and RLX for the rest of the Ohio tornadoes.

 

As far as I've seen, the Pittsburgh NWS hasn't seen any evidence of tornadoes in its forecast area. 

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Here is a late night tornado warning with decent velocity difference. (1136PM central time) on a day when not a lot has really popped up on the Plains--  just a cluster of severe reports in western Nebraska, and a separate one near Amarillo Texas.

 

kgld_20220610_0436_SRV_05a.jpg

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  • Meteorologist

While the magnitude of NAM's output for Sunday is nonsense, there's plenty of reason for concern.

Even GFS is showing low-to-mid 70 dew points below 40-60 knot northwesterly winds at 500mb. I'm expecting a day 3 slight risk for the area... only possible thing that could hold that back is confidence in storms developing.

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image.thumb.png.83fd86c46ce995eb648428a53d19d1f9.png

Edited by ClicheVortex2014
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1 hour ago, ClicheVortex2014 said:

While the magnitude of NAM's output for Sunday is nonsense, there's plenty of reason for concern.

Even GFS is showing low-to-mid 70 dew points below 40-60 knot northwesterly winds at 500mb. I'm expecting a day 3 slight risk for the area... only possible thing that could hold that back is confidence in storms developing.

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image.thumb.png.83fd86c46ce995eb648428a53d19d1f9.png

Yeah Sunday is looking very volatile. This kind of setup can be very explosive 

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MIDWEST INTO THE OHIO VALLEY     A CLUSTER/MCS MAY BE ONGOING SUNDAY MORNING ACROSS SOME PORTION OF   THE MIDWEST. A VERY MOIST LOW-LEVEL AIRMASS WILL LIKELY BE IN PLACE   AHEAD OF THIS CONVECTION ACROSS THE MID MS VALLEY INTO THE OH VALLEY   ALONG/SOUTH OF A FRONT. GIVEN THAT LARGE-SCALE RIDGING IS FORECAST   TO GRADUALLY SHIFT EASTWARD ACROSS THESE AREAS THROUGH THE PERIOD,   IT REMAINS UNCLEAR WHETHER SEVERE THUNDERSTORMS WILL BE ABLE TO   DEVELOP/PERSIST ACROSS THESE REGIONS THROUGH THE DAY. IF CONVECTION   CAN FORM, THEN IT WOULD HAVE ACCESS TO STRONG TO POTENTIALLY EXTREME   INSTABILITY, ALONG WITH MODERATE DEEP-LAYER SHEAR OWING TO ENHANCED   MID-LEVEL WEST-NORTHWESTERLY FLOW. BOTH SEVERE/DAMAGING WIND AND   LARGE HAIL COULD OCCUR IF CONVECTION DEVELOPS. THE MAIN UNCERTAINTY   PRECLUDING GREATER SEVERE PROBABILITIES IS THE PLACEMENT/EVOLUTION   OF THUNDERSTORMS SUNDAY MORNING AND OVERALL COVERAGE OF CONVECTION   ACROSS THIS REGION SUNDAY AFTERNOON. IF CONFIDENCE INCREASES THAT AN   MCS WILL SWEEP SOUTHEASTWARD ACROSS PARTS OF THE MIDWEST AND OH   VALLEY AS SOME GUIDANCE SUGGESTS, THEN GREATER SEVERE PROBABILITIES   WOULD BE NEEDED.  

 

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From Indy

Saturday into Saturday Night. Northwesterly flow aloft continues into Saturday. At the same time, surface flow will have switched to a more southerly direction behind Friday`s system. A diffuse warm front will begin slowly working its way northward across the state. Keeping an eye out for MCSs or their remnants dropping down from the northwest Saturday into Sunday...decent moisture return with a modest nocturnal LLJ could sustain any convective system that forms upstream. Some models are already hinting at this possibility, but vary significantly with intensity and timing. Will include a chance of showers and thunderstorms Saturday into Sunday to cover the range of possibilities. Temperatures are expected to be warmer than Friday, but still slightly below average for this time of the year. && .Long Term...(Saturday night through Thursday) Issued at 258 AM EDT Fri Jun 10 2022 ...Heat Wave Coming to the Ohio Valley for Next Week... The well advertised transition from the northwest flow regime to a more amplified pattern with a strong ridge centered over the Ohio Valley will lead to the first taste of significant summer heat for the year for the first half of next week. The persistent double barreled upper low that has been parked over eastern Canada will gradually lift out into the Canadian Maritimes by early next week which will enable upper level heights to rise in response across the Ohio and Tennessee Valleys by Tuesday and Wednesday. Prior to the expansion of the ridge...stronger mid level flow will remain focused from the northern Plains into the Ohio Valley and central Appalachians around the base of the upper low to our northeast. This creates some uncertainty in the forecast for the first part of the extended from Saturday night into Monday as any subtle wave tracking within the enhanced flow aloft would be positioned to potentially create some convective mischief...perhaps as smaller convective clusters drifting into the region. Model guidance is all over the place with respect to this thinking and really offers nothing concrete which is a commonality in this sort of pattern. Will carry periodic isolated pops into Monday but attempting to provide any detail beyond that is challenging at this point. The big takeaway here is that any convective threat throughout the extended is likely to be elevated during this stretch over the weekend and into Monday.

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