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Posts posted by Sydney Claridge
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2 hours ago, olafminesaw said:
I kept wondering why the advisory times are one hour earlier, took me forever to figure out why... Hurricanes after fall back are not the norm apparently
I suspect that's because they operate on Zulu/UTC time, which does not change for the switch from daylight savings time to standard time (or vice-versa).
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Sanibel, 130 MPH.
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We’ve had some kind of outflow boundary surge across most of Tarrant County now. I’m starting to think our severe potential just dropped.
That said, it would be a different story if that boundary can come back northwest after this first round of (non-severe) storms. The boundary is surging southeast right now, so I don’t really foresee it moving back northwest, but I'll be sure to keep an eye on temperatures and dewpoints to see if they start increasing.
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2 minutes ago, BrandonC_TX said:
The tornado seems to be moving due north right now, but we really don’t want to get a right turn that would bring it into Vernon.
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1 minute ago, vman722 said:
Just heard a bunch of chasers confirm this on Ryan Hall’s YouTube stream. Motion looks very northerly the last few scans.
Wow. We have 4 warning polygons now, with Vernon now included in the newest (northernmost) polygon.
I suspect the more southerly polygons are going to get canceled soon, but the storm motion is very erratic.
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1 minute ago, radarman said:
fail. fell apart
Thank goodness. It feels like DFW dodged a bullet.
Small areas of “popcorn” showers seem to be falling apart around Dublin and Hico, as well. If any of those had been able to grow into a supercell they might have posed a threat to DFW later.
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2 minutes ago, Powerball said:
It's really struggling.
"The little storm that could"
Thank goodness, because I don’t think anyone wants a damaging hailstorm over the Metroplex.
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2 hours ago, Powerball said:
The SPC's discussion even mentions the potential of hurricane force winds with the MCS as it develops a cold pool
This makes me wonder if we are looking at a possible derecho tonight. That’s provided that the MCS can maintain its intensity with severe winds over a 250+ mile distance, of course.
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38 minutes ago, Witness Protection Program said:
So, what, 8 simultaneous tor warns in LA right now?
That makes me wonder if our squall line/QLCS could line up tornado warnings along an even-longer stretch of the line.
Although associated with a much stronger storm system, I recall how the squall line/QLCS on October 26, 2010 had almost-continuous tornado warnings across almost the entire north-south extent of Indiana and Ohio as it crossed eastern IN and western OH. The tornadoes that occurred that day were also embedded within the main squall line/QLCS.
I do wonder if something similar could happen with our QLCS across Mississippi today (maybe not the entire north-south extent of the state). 10/26/2010 had a 15% hatched tornado risk too (albeit much further north); the high risk was only for wind. I'm not saying that 10/26/2010 is an analog for today (that was a historic storm that occurred further north); I'm rather referring to the manner in which the tornadoes occurred that day. -
20 minutes ago, nwohweather said:
I'd say so, looks like the low is trending a bit stronger than expected thus far. I can say anecdotally it's pretty warm and humid for March here even in South Carolina, I imagine closer to the low dews may take a run at 70 this afternoon. It's a pretty significant moisture transport into this thing, PWAT's are around 1.7 at the line currently
What is interesting about this setup, though, is the extent of the dry air in-between your location in South Carolina and the humid airmass in place over the Mississippi Valley. In conjunction with the strong winds, that air is dry enough to prompt SPC to issue a critical fire area across east TN, east KY, and southern OH. I know some of this is the result of downsloping winds off the Appalachians, but with such a strong storm system it is interesting that we aren't seeing more moisture transport into this region.
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That talk about supercells makes me wonder if any of these showers and thundershowers ahead of the line, mainly in Louisiana, will try to evolve into a supercell? Even if one did, it would probably got overtaken by the squall line quite quickly (if it happened with the more developed thundershowers closer to the line).
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2 hours ago, MattPetrulli said:
The HRRR is definitely bullish, like it almost always is. That said, this particular run (18z) does get some pretty substantial CAPE and moisture into DFW, interestingly enough. I would feel concerned about severe thunderstorm potential here if it verified, provided that a storm could take advantage of the ingredients in place.
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Enhanced Event for TX/LA/AR/MS December 13th/14th -- 10% contour for tornadoes
in Central/Western States
Posted
Also there’s three tornado warnings west of DFW now. I’m in central Fort Worth and I’m starting to wonder about that southernmost cell possibly becoming a problem at my location later this morning; I’m expecting the Palo Pinto (central) cell to pass to my north.
EDIT: that rotational signature north of Gorman, on the southernmost cell, is looking quite concerning.
EDIT 2: might this be a debris signature on the correlation coefficient? I can’t tell completely, but it wouldn’t surprise me either.