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April 23-May 5, 2024 | Multi-Day Severe Weather/Tornado Outbreak


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tornado reported near Turkey Texas about an hour ago. You can see the cells interfering with one another, but still, the rotation was there

tornado turkey texas.jpg

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80mph line with QLCS circulations might pass just south of me. Looks like I'm gonna be staying up for a bit...

In other news the NWS only found EF1 damage from the monster tor yesterday so that's good that it didn't hit much. Probably the strongest EF1 of all time lol

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The GFS and ECMWF agree on a strong surface low pressure somewhere in the northern Plains on Tuesday. (See SPC, Day 5 discussion and graphics.) Both models show a strong upper level trough affecting the significant warm sector/dryline.

dew point forecast for hour 108.png

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41 minutes ago, Chinook said:

The GFS and ECMWF agree on a strong surface low pressure somewhere in the northern Plains on Tuesday. (See SPC, Day 5 discussion and graphics.) Both models show a strong upper level trough affecting the significant warm sector/dryline.

dew point forecast for hour 108.png

Tornado outbreak appears very likely next week

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15 hours ago, StormfanaticInd said:

OV will probably need to be in a risk area for Tues and Wednesday 

ILN appears to agree with this.

Quote
On Monday...the residual impacts of the southern stream wave moving
through KY/TN will likely foster diurnal shower/storms especially
south, before that system pushes east as well.

A progressive...deep upper trough will be pushing steadily east
across the western CONUS on Monday, forcing replacement height rises
over the Ohio Valley in the wake of weekend unsettled weather. This
system will slow and continue to deepen as it centers over the
Dakotas by Tuesday, which places the Ohio Valley in broadly
diffluent/southwesterly flow aloft with a wide open Gulf of Mexico-
sourced low level jet transporting plenty of warmth/moisture for the
middle of next week. While the magnitude of the negative height
anomalies trends downward through the week, the trough axis remains
intact and maintains a feed of moderate/fast southwesterly flow atop
a southerly low level jet well into Thursday.  As a result of all of
this, ejecting waves out of the trough should focus/funnel through
the Ohio Valley along an oscillating frontal boundary draped
somewhere nearby. These waves are common in all
deterministic/ensemble member runs, but with widely varying latitude
and depth.

It is noted that CIPS analogs running on the mean GEFS pattern
highlights a broad area of potentially daily severe convective
threat from the central and lower Mississippi River Valley, into the
Ohio Valley Tue-Thur that is mirrored by 02.00Z CSU MLP guidance.
GEFS/EPS instability matrices are strongly aligned in this time
period offering moderate instability, and plenty of precip chances
via waves moving through the area. 02.00Z EPS EFI/SOT graphics paint
a corridor of anomalous CAPE/shear overlap for early May through the
Ohio Valley, peaking on Wednesday, but timing should taken
cautiously at this time range as daily threats will be modulated
heavily by low amplitude shortwave tracks and convective overturning
in previous days.  The pattern - when taken cumulatively - suggest
rainfall/flooding issues could be present either with individual MCS
episodes, or from repeated rounds of convection as the ridge slowly
flattens and low-mid level flow begins to align in a WSW orientation
by the end of next week, when an effective frontal should begin to
settle south of the area and we cool/dry out perhaps into next
weekend. But until then...Tues night-Thursday bears some potential
for several rounds of organized storms, some of which could be
strong to severe, with locally heavy rain/flooding.

 

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  • Meteorologist

Timing will be everything, especially Monday, but this does appear to be another widespread outbreak early next week with a pattern reload at the end of next week. Busy times. 

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Quote
Day 4-8 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0400 AM CDT Fri May 03 2024

   Valid 061200Z - 111200Z

   ...SEVERE WEATHER OUTBREAK POSSIBLE ON D4/MON...

   ...DISCUSSION...
   A multi-day period of organized severe thunderstorm potential
   appears likely across parts of the central to eastern CONUS next
   week, beginning on Day 4/Monday across the Plains, and continuing
   through at least Day 6/Wednesday.

   ...Day 4/Monday...
   A negatively tilted upper trough will eject northeastward over the
   northern/central Plains on Monday. Pronounced low-level mass
   response will encourage rich low-level moisture to advect northward
   over the southern/central Plains, as a surface low rapidly deepens
   over the northern High Plains. Strong deep-layer shear and at least
   moderate instability are expected to be in place ahead of a surface
   dryline extending across the southern/central Plains.

   Thunderstorms will likely erupt along the length of the dryline by
   late Monday afternoon from southern NE into central KS and
   north-central OK. Supercells are likely to be the dominant mode
   initially given the strength of the deep-layer shear. Both very
   large hail and tornadoes will be possible with these supercells as
   they spread eastward across the southern/central Plains through
   Monday evening. With a southerly low-level jet forecast to
   strengthen to at least 50-60 kt Saturday evening, a corresponding
   rapid increase in low-level shear will likely support a continued
   threat for tornadoes with any discrete convection. Some of these
   tornadoes could be strong. The severe threat will likely continue
   Monday night with eastward extent across the Plains, before
   convection possibly weakens some towards early Tuesday morning.
   Given increased confidence in high-end severe potential, a 30%
   severe area has been introduced from parts of southern NE into
   central KS and north-central OK.

   ...Day 5/Tuesday...
   The large-scale upper trough/low is forecast to gradually occlude
   over the northern Plains on Tuesday. But, an enhanced mid-level jet
   and embedded vorticity maximum will likely overspread parts of the
   Upper Midwest, mid MS Valley, and OH Valley through Tuesday evening.
   An expansive warm sector will likely be in place across these
   regions ahead of a surface cold front/dryline. Robust convection
   should develop along/ahead of these boundaries through the day.
   Sufficient instability and deep-layer shear will likely exist to
   support organized severe thunderstorms, including supercells posing
   a threat for all severe hazards. The northeastward extent of the
   warm sector remains somewhat uncertain into the OH Valley. Still,
   some severe risk will probably persist into Tuesday evening/night
   with eastward extent across the mid MS Valley and lower OH
   Valley/Midwest. Expansion of the 15% severe area may be needed in
   later outlooks, pending better model agreement and increased
   confidence in the eastward extent of rich low-level moisture and
   related instability.

   ...Day 6/Wednesday...
   The upper trough/low should gradually evolve eastward across the
   northern Plains on Wednesday. While there are still some differences
   in model guidance regarding the evolution of an embedded shortwave
   trough, there appears to be enough agreement in the synoptic pattern
   to include a 15% severe delineation for Wednesday for parts of the
   southern Plains into the ArkLaTex/Ozarks and towards the mid MS
   Valley. Across these areas, strong instability is forecast to
   develop east of a front/dryline. With enhanced mid-level flow
   persisting with a westerly mid/upper-level jet, organized severe
   thunderstorms should once again develop Wednesday afternoon.
   Supercells posing a threat for all severe hazards may occur. The
   northern/eastern extent of the severe threat is unclear, as the
   convection from Tuesday may tend to limit better low-level moisture
   return into the OH/TN Valleys. Depending on model trends over the
   next few days, the 15% severe area may need to be expanded to
   include these regions.

   ...Day 7/Thursday and Day 8/Friday...
   Some severe threat may continue on Thursday from parts of TX into
   the lower MS Valley/Southeast, generally along/south of a front and
   any convection that develops Wednesday. Too much uncertainty
   currently exists to include a 15% severe area at this time, but
   trends will be monitored. A severe risk also appears possible next
   Friday across the same general regions, but confidence in the
   placement of the front and convection is even lower than Thursday.

   ..Gleason.. 05/03/2024

 

day48prob.gif

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1 hour ago, BuckeyeGal said:

That's worrisome that it's already so high in the Day 4-6 range.

I know I wasn’t expecting it this far out but 2024 has been quite the year so far. Definitely something to watch! It’s been quite here in the Ohio valley recently…

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Definitely watching next week's severe potential with interest as it looks like it will offer a chance of severe wx farther east than the big outbreak in the Plains in late April.

On another note, I've been having a lot of issues with the forum "jumping" rapidly on my phone, especially on the main page/forum index but also in the forums at times.  Makes it difficult to use.  Anyone else having any problem?

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54 minutes ago, Hoosier said:

Definitely watching next week's severe potential with interest as it looks like it will offer a chance of severe wx farther east than the big outbreak in the Plains in late April.

On another note, I've been having a lot of issues with the forum "jumping" rapidly on my phone, especially on the main page/forum index but also in the forums at times.  Makes it difficult to use.  Anyone else having any problem?

I've had this problem before for a day or so and it just went away from what I remember. Not entirely sure what was causing it.

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2 minutes ago, NWOhioChaser said:

Mean looking supercell southwest of Abilene, nearing Robert Lee.

IMG_0493.jpeg

PDS warned.

Quote
Severe Weather Statement
National Weather Service San Angelo TX
356 PM CDT Fri May 3 2024

TXC081-032130-
/O.COR.KSJT.TO.W.0018.000000T0000Z-240503T2130Z/
Coke TX-
356 PM CDT Fri May 3 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHWESTERN COKE COUNTY...

At 356 PM CDT, a confirmed large and extremely dangerous tornado was
located near Silver, moving south at 15 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

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...
E.V. Spence Reservoir Near Paint Creek Recreation Area and Silver.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3208 10070 3208 10063 3199 10050 3187 10059
      3199 10079 3209 10071
TIME...MOT...LOC 2050Z 022DEG 14KT 3201 10070

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...2.00 IN

 

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