Stratton23 wrote:Hopefully central texas and se texas can cash in even more on the rain next week, because it does appears the pattern flips to much drier conditions beyond next weeks storm system
Yep, I was thinking the same thing.
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Stratton23 wrote:Hopefully central texas and se texas can cash in even more on the rain next week, because it does appears the pattern flips to much drier conditions beyond next weeks storm system
wxman22 wrote:It feels like early Fall today. And with the upcoming period of NW/Northly flow aloft on the backside of the cutoff trough later next week, it may stay cool at least until mid month. Subject to change of course.
wxman22 wrote:It feels like early Fall today. And with the upcoming period of NW/Northly flow aloft on the backside of the cutoff trough later next week, it may stay cool at least until mid month. Subject to change of course.
TomballEd wrote:SPC SWODY 3 wording sounds ominous. Just a SLIGHT RISK at this time. But it may go up as Tuesday gets closer.
...Central Texas into Sabine Valley...
The expectation of early day precipitation complicates the overall
forecast for the afternoon. Even so, a very moist and weakly capped
airmass is forecast to be in place south of the warm front and east
of the developing dryline. The ECMWF is more aggressive with the
early development of a cluster of storms/MCS. In this scenario,
convection would likely strengthen as surface heating occurs ahead
of it. The GFS/NAM show greater potential for the dryline to be a
focus for convection during the afternoon. Here, supercells capable
of all hazards would be possible. There is potential for significant
severe, with very large hail being the primary concern, but
uncertainty in the convective evolution keeps confidence too low to
highlight any particularly area.
TexasF6 wrote:TomballEd wrote:SPC SWODY 3 wording sounds ominous. Just a SLIGHT RISK at this time. But it may go up as Tuesday gets closer.
...Central Texas into Sabine Valley...
The expectation of early day precipitation complicates the overall
forecast for the afternoon. Even so, a very moist and weakly capped
airmass is forecast to be in place south of the warm front and east
of the developing dryline. The ECMWF is more aggressive with the
early development of a cluster of storms/MCS. In this scenario,
convection would likely strengthen as surface heating occurs ahead
of it. The GFS/NAM show greater potential for the dryline to be a
focus for convection during the afternoon. Here, supercells capable
of all hazards would be possible. There is potential for significant
severe, with very large hail being the primary concern, but
uncertainty in the convective evolution keeps confidence too low to
highlight any particularly area.
I looked at several models and yikes!!! 4.50in hail and tornadoes possible...bears watching!
txtwister78 wrote:TexasF6 wrote:TomballEd wrote:SPC SWODY 3 wording sounds ominous. Just a SLIGHT RISK at this time. But it may go up as Tuesday gets closer.
...Central Texas into Sabine Valley...
The expectation of early day precipitation complicates the overall
forecast for the afternoon. Even so, a very moist and weakly capped
airmass is forecast to be in place south of the warm front and east
of the developing dryline. The ECMWF is more aggressive with the
early development of a cluster of storms/MCS. In this scenario,
convection would likely strengthen as surface heating occurs ahead
of it. The GFS/NAM show greater potential for the dryline to be a
focus for convection during the afternoon. Here, supercells capable
of all hazards would be possible. There is potential for significant
severe, with very large hail being the primary concern, but
uncertainty in the convective evolution keeps confidence too low to
highlight any particularly area.
I looked at several models and yikes!!! 4.50in hail and tornadoes possible...bears watching!
I don't know which models you're referring to but despite better lift Tuesday courtesy of the frontal boundary, I would say anything rising to that level of severe is going to be highly conditional on the timing of storms (early morning vs afternoon), cloud cover that will either limit instability/temps or allow atmosphere to destabilize should we have less and what if any outflow boundaries are in place from any previous storm activity.
Again all highly conditional/uncertain that SPC acknowledges and therfore has kept slight risk in place for now.
TexasF6 wrote:txtwister78 wrote:TexasF6 wrote:
I looked at several models and yikes!!! 4.50in hail and tornadoes possible...bears watching!
I don't know which models you're referring to but despite better lift Tuesday courtesy of the frontal boundary, I would say anything rising to that level of severe is going to be highly conditional on the timing of storms (early morning vs afternoon), cloud cover that will either limit instability/temps or allow atmosphere to destabilize should we have less and what if any outflow boundaries are in place from any previous storm activity.
Again all highly conditional/uncertain that SPC acknowledges and therfore has kept slight risk in place for now.
NAM, GFS, and even the Canadian models showed potential for severe weather. May in Texas is always primetime for severe weather. Pivotal Weather has runs available if you need any additional resources.
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1215 PM CDT Sun May 04 2025
Valid 051200Z - 061200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS FAR
SOUTHEAST NEW MEXICO INTO SOUTHWEST TEXAS...
...SUMMARY...
Severe thunderstorms are expected from the southern High Plains into
parts of central Texas Monday afternoon and evening. Scattered large
to very large hail and severe winds are the primary threats, though
a couple of tornadoes also are possible. Additional strong to severe
storms are possible along the eastern Florida coast and from
northeast North Carolina to the Lake Erie vicinity.
...Synopsis...
A pair of upper cyclones, one over the Ohio Valley and the other
across the Southwest, will pivot east on Monday. These systems will
support a belt of enhanced mid/upper flow across the southern
Rockies/High Plains and the Mid-Atlantic/Lower Great Lakes. At the
surface, a cold front will stretch from the Mid-Atlantic
south/southwest into north-central FL. Meanwhile, a dryline is
forecast to develop across eastern NM and southwest TX, while a warm
front lifts slowly northward across northwest and central TX. These
features will focus potential for severe thunderstorms Monday
afternoon into the evening/overnight.
...Southeast NM into Central TX...
Southeasterly low-level flow will transport 60s F dewpoints
northwest toward southeast NM into the Trans-Pecos vicinity ahead of
a sharpening dryline. Strong heating along/just behind the dryline
will foster moderate diurnal destabilization as deep-layer flow
strengthens. Forecast hodographs initially will be
elongated/straight through the afternoon and early evening.
Splitting supercells produce large/very large hail are expected with
initial convection. Furthermore, steep low-level lapse rates where
stronger heating occurs also could support strong/severe gusts.
During the evening, a low-level jet will increase, resulting in
enlarged/curved low-level hodographs. Additional rounds of
supercells may develop as the dryline begins to retreat and stronger
ascent overspreads the region. This activity will continue to pose a
significant hail risk with an increasing risk for a couple of
tornadoes. As the upper low draws closer to the southern Rockies
during the nighttime hours, weak cyclogenesis may occur over far
southwest TX. Additional thunderstorm clusters, possibly growing
upscale into an MCS propagating along the higher theta-e gradient
across west-central to central TX is possible. It is uncertain how
intense this convection may become given multiple rounds of
convection across parts of the area earlier in the day, but some
risk for damaging gusts and a tornado or two will persist.
Stratton23 wrote:Enjoy the rain while we can everyone! Looks like the wet weather pattern comes to an end mid week as ridging pretty much takes over the central US , a sign that summer is coming
.wxman22 wrote:Stratton23 wrote:Enjoy the rain while we can everyone! Looks like the wet weather pattern comes to an end mid week as ridging pretty much takes over the central US , a sign that summer is coming
Models are actually hinting at the dryline becoming active in west/northwest Texas and points north into the central plains after mid month. With surface cyclogenesis frequently taking place on the lee side of the Rockies. That's a classic setup in traditional tornado alley this time of year. The pattern will be drier overall as QPF wont be nearly as widespread as it's been lately. As such a pattern would favor more scattered and diurnal driven discreet supercells instead of the large MCS's of lately. And would probably favor mainly the western 1/3rd of the state QPF wise due to the location of the dryline. Climatology speaking this is a very typical pattern in mid to late May.
So yes things look to become drier as we head deeper into May. But the severe weather risk may actually go up in traditional tornado alley. You'll also notice even the low resolution global models this far out, are already seeing storms firing along the dryline in the Plains after the 15th or so. Could be a good time for the chasers lol. We'll see.
wxman22 wrote:Stratton23 wrote:Enjoy the rain while we can everyone! Looks like the wet weather pattern comes to an end mid week as ridging pretty much takes over the central US , a sign that summer is coming
Models are actually hinting at the dryline becoming active in west/northwest Texas and points north into the central plains after mid month. With surface cyclogenesis frequently taking place on the lee side of the Rockies. That's a classic setup in traditional tornado alley this time of year. The pattern will be drier overall as QPF wont be nearly as widespread as it's been lately. As such a pattern would favor more scattered and diurnal driven discreet supercells instead of the large MCS's of lately. And would probably favor mainly the western 1/3rd of the state QPF wise due to the location of the dryline. Climatology speaking this is a very typical pattern in mid to late May.
So yes things look to become drier as we head deeper into May. But the severe weather risk may actually go up in traditional tornado alley. You'll also notice even the low resolution global models this far out, are already seeing storms firing along the dryline in the Plains after the 15th or so. Could be a good time for the chasers lol. We'll see.
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