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May 6-9, 2024 | POTENTIAL OUTBREAK 🌪


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Lucky me - have a client meeting in Dublin at 3:00 tomorrow.  May need to see if they're up for a Zoom/Teams meeting so I can be at home with car in garage

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9 minutes ago, StormfanaticInd said:

That hail threat is starting to get my attention. They are saying large to very large hail is possible 

Having no garage I’m hoping we can miss that part! 🤦🏻‍♂️

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Bottom line up front... the setup for severe storms appears to
have increased and become a bit more concerning given recent
data trends. The main time period for severe potential locally
appears to be somewhere in the vicinity of the 4 PM to 11 PM EDT
window, likely maximizing between 6 PM and 10 PM.

Diving a bit further into the details, expect that a (somewhat
decaying) band of convection will move into the region by
mid/late morning Tuesday. This activity represents "convective
leftovers" from the central plains severe weather episode
expected later today. Although the activity /should/ be on a
weakening trend with eastward progression closer to/into the ILN
FA around/after noontime, a slightly slower arrival may mean
that sufficient diurnal destabilization could occur /ahead/ of
this activity, lending itself to at least some potential of SB-
convection and redevelopment along the eastward-moving arc. Do
think that the activity should survive long enough to enter the
local area, potentially providing a focus for some redevelopment
along it`s trajectory through the ILN FA between about 12 PM and
4 PM. Certainly a few strong/severe storms may develop
associated with this feature (providing it holds together
enough), with strong/damaging winds and some small hail being
the primary threat through the first half of the afternoon.

Once we get past about 3-4 PM or so, the environment is going to
become increasingly conducive to redevelopment of convection
(initially back to the W in IL/IN), with a conditionally-
volatile setup very possible given rapid destabilization in the
wake of early afternoon activity. There are still a few
uncertainties in just /how much/ redevelopment occurs across
IL/IN mid/late afternoon before it overspreads the local area
late afternoon through the evening. Nevertheless, a strongly
unstable environment (courtesy of SB/MLCAPE in excess of
2000J/kg) should develop within a decently-wide corridor
(nudging in from the SW past 21z). This will occur amidst an
environment with plenty of forcing and ascent, good midlevel
lapse rates (supporting robust updraft development/strength),
and good deep- layer speed shear. A H5 jet speed max will nose
to the NE into the OH Vly by late afternoon/evening, eliciting
an elongated and subtly-curved hodograph from the sfc to about
H5. There is some directional shear in the BL as well, but the
"fly-in-the-ointment," so to speak, is the backing of winds in
the upper levels within the H2-H5 layer, producing an
anticyclonic curvature to the end of the hodograph. This depicts
a likely scenario that is conducive to discrete/cellular
activity (perhaps with splitting supercells), with some
clustering possible. In addition to the large to very large hail
threat, the primary concern would be if sfc winds are able to
back immediately ahead of the convection, especially between
about 21z-03z, creating local enhancements to the 0-1km/0-3km
SRH fields. This backing appears most probable/favorable near/N
of I-70, suggesting the tornado potential is slightly greater in
these areas than further S toward/S of the OH Rvr with the LL
flow remains more veered. Given the sufficient overlap between a
strongly-unstable environment, good forcing/ascent, and good
deep-layer shear, all hazards are in-play Tuesday late
afternoon/evening, with the greatest tornado threat likely to
focus near/N of I-70 in a slightly more conducive environment
with the somewhat backed LL/sfc flow. And although storm
motions should be fairly quick, cannot completely rule out some
brief heavy rain/flooding, especially in areas that have
received significant rain over the past few days. Have adjusted
HWO wording to reflect this latest thinking.

Quite the write up from IlN for tomorrow.

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Posted (edited)
24 minutes ago, OxfordOh_ said:
Bottom line up front... the setup for severe storms appears to
have increased and become a bit more concerning given recent
data trends. The main time period for severe potential locally
appears to be somewhere in the vicinity of the 4 PM to 11 PM EDT
window, likely maximizing between 6 PM and 10 PM.

Diving a bit further into the details, expect that a (somewhat
decaying) band of convection will move into the region by
mid/late morning Tuesday. This activity represents "convective
leftovers" from the central plains severe weather episode
expected later today. Although the activity /should/ be on a
weakening trend with eastward progression closer to/into the ILN
FA around/after noontime, a slightly slower arrival may mean
that sufficient diurnal destabilization could occur /ahead/ of
this activity, lending itself to at least some potential of SB-
convection and redevelopment along the eastward-moving arc. Do
think that the activity should survive long enough to enter the
local area, potentially providing a focus for some redevelopment
along it`s trajectory through the ILN FA between about 12 PM and
4 PM. Certainly a few strong/severe storms may develop
associated with this feature (providing it holds together
enough), with strong/damaging winds and some small hail being
the primary threat through the first half of the afternoon.

Once we get past about 3-4 PM or so, the environment is going to
become increasingly conducive to redevelopment of convection
(initially back to the W in IL/IN), with a conditionally-
volatile setup very possible given rapid destabilization in the
wake of early afternoon activity. There are still a few
uncertainties in just /how much/ redevelopment occurs across
IL/IN mid/late afternoon before it overspreads the local area
late afternoon through the evening. Nevertheless, a strongly
unstable environment (courtesy of SB/MLCAPE in excess of
2000J/kg) should develop within a decently-wide corridor
(nudging in from the SW past 21z). This will occur amidst an
environment with plenty of forcing and ascent, good midlevel
lapse rates (supporting robust updraft development/strength),
and good deep- layer speed shear. A H5 jet speed max will nose
to the NE into the OH Vly by late afternoon/evening, eliciting
an elongated and subtly-curved hodograph from the sfc to about
H5. There is some directional shear in the BL as well, but the
"fly-in-the-ointment," so to speak, is the backing of winds in
the upper levels within the H2-H5 layer, producing an
anticyclonic curvature to the end of the hodograph. This depicts
a likely scenario that is conducive to discrete/cellular
activity (perhaps with splitting supercells), with some
clustering possible. In addition to the large to very large hail
threat, the primary concern would be if sfc winds are able to
back immediately ahead of the convection, especially between
about 21z-03z, creating local enhancements to the 0-1km/0-3km
SRH fields. This backing appears most probable/favorable near/N
of I-70, suggesting the tornado potential is slightly greater in
these areas than further S toward/S of the OH Rvr with the LL
flow remains more veered. Given the sufficient overlap between a
strongly-unstable environment, good forcing/ascent, and good
deep-layer shear, all hazards are in-play Tuesday late
afternoon/evening, with the greatest tornado threat likely to
focus near/N of I-70 in a slightly more conducive environment
with the somewhat backed LL/sfc flow. And although storm
motions should be fairly quick, cannot completely rule out some
brief heavy rain/flooding, especially in areas that have
received significant rain over the past few days. Have adjusted
HWO wording to reflect this latest thinking.

Quite the write up from IlN for tomorrow.

No kidding - of course, we live under 20 miles north of I-70, so should be fun in our area.   Local met was just on radio saying after 6:00 tomorrow.   Once meeting is over tomorrow, getting the hell home.  

Edited by Crowbar
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12 minutes ago, Crowbar said:

No kidding - of course, we live under 20 miles north of I-70, so should be fun in our area.   Local met was just on radio saying after 6:00 tomorrow.   Once meeting is over tomorrow, getting the hell home.  

Exactly how im feeling! Gotta knock a few things out tomorrow in the morning and then I’m staying home. Be safe! 

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Posted (edited)
4 minutes ago, ElectricStorm said:

Multi vortex tornado on the ground SE of Okeene, OK on News 9

IMG_0566.jpegCell to its southwest looks like it’s wrapping up nicely too.

Edited by NWOhioChaser
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Confirmed tornado north of Loyal OK.

Quote
Severe Weather Statement
National Weather Service Norman OK
658 PM CDT Mon May 6 2024

OKC047-073-070030-
/O.CON.KOUN.TO.W.0099.000000T0000Z-240507T0030Z/
Kingfisher OK-Garfield OK-
658 PM CDT Mon May 6 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTHWESTERN KINGFISHER AND SOUTH CENTRAL GARFIELD COUNTIES...

At 658 PM CDT, a confirmed tornado was located 9 miles north of
Loyal, moving east at 30 mph.

HAZARD...Damaging tornado and tennis ball size hail.

SOURCE...Broadcast media confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows, and vehicles will occur.  Tree damage is
         likely.

Locations impacted include...
Hennessey, Waukomis, Bison, and Lacey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
storm shelter, safe room, 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 3604 9786 3605 9818 3613 9819 3628 9786
TIME...MOT...LOC 2358Z 260DEG 26KT 3610 9812

TORNADO...OBSERVED
MAX HAIL SIZE...2.50 IN

 

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Confirmed tornado near Covington.

Quote
Severe Weather Statement
National Weather Service Norman OK
756 PM CDT Mon May 6 2024

OKC047-103-070130-
/O.CON.KOUN.TO.W.0104.000000T0000Z-240507T0130Z/
Noble OK-Garfield OK-
756 PM CDT Mon May 6 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR WESTERN
NOBLE AND SOUTHEASTERN GARFIELD COUNTIES...

At 756 PM CDT, a confirmed tornado was located near Covington, moving
east at 25 mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Emergency management confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows, and vehicles will occur.  Tree damage is
         likely.

Locations impacted include...
Covington, Douglas, Lucien, and Hayward.

This includes Interstate 35 between mile markers 182 and 201.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
storm shelter, safe room, 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 3651 9732 3622 9731 3616 9770 3616 9772
      3629 9778
TIME...MOT...LOC 0056Z 248DEG 23KT 3627 9760

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

 

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