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Everything posted by weatherwiz
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Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Probably in another hour should see a new watch downstream -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Hopefully I can chase later. Have to go to New Britain to my niece's birthday party. I'm pumped the Bruins play at 3:00 too...can go after the game. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Already getting CU's to pop up in the dry slot of PA. Want to watch any cells that develop initially for TOR potential (obviously talking about west of our region). -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Huge enhanced for wind!! -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Can't get any more legit then this Hopefully we can get something like this with an EML in a few months -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Our neighbor is having the pine tree taken down April 17. Hopefully mother nature does that for them today. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
It's possible, but what would really help is if we were able to sneak dews closer to 60 or like 60-61 like they'll get in NJ into SE NY. That's really the biggest discriminator in this IMO. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
I mean I think we're capped on what we can achieve instability wise regardless. Maybe stronger heating yields a couple hundred more J of CAPE. But if we can get temps to climb into the mid or even upper 60's with dews into the mid 50's under 7-7.5 C/KM mlvl lapse rates, given the shear parameters and shortwave forcing, that is more then enough to keep a line into western sections. This will probably weaken with eastward extent some b/c instability will wane with loss of heating, but dynamics should keep an isolated damaging wind gust threat farther east. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
mid-level lapse rates really steepen through the day. Very impressive dry slot behind these rain and clouds. This will be fun for western sections later on -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
The late timing is certainly a concern, especially as you move east across the state. Instability is certainly going to be limited due to marginal dewpoints, but steep mid-level lapse rates should help compensate some. I do think the greatest risk overall is going to be just to our west with rapid weakening across the state, but it’s possible dynamics may keep things going. Watch the steep low-level lapse rates as an aid in maintaining wind potential -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
HRRR pretty aggressive but not outlandish given shear/lapse rates and strength of shortwave -
Severe Weather 3-30-23 and 3-31-23
weatherwiz replied to cheese007's topic in Central/Western States
nahhh...never want to see a scenario like that were property and lives are being impacted. If it was going over a field or woods different story. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
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Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
The RAP with 300-350 J of 3km CAPE across eastern IA/IL border later on...that is insane given the shear parameters. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
A 90 -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Funnel cloud spotted with the cell headed towards LIT. Maybe they'll report funnel in the METAR -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
ehhh kind of a loaded question. I'm not a huge fan of comparing events, but certainly given the potential today holds, this could be a very bad day. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
woohoooo -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Agreed, sometimes it's too easy to get caught up with these composites and parameters. Basically, just shows that if mature enough updrafts can materialize they have a ton to work with. I almost can't get over the HRRR...it's like a QLCS line of supercells (and multiple of them). The storm motions are through the roof too which is not good. People will have very little time to react and get to safety. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
The HRRR has been trending more and more aggressive which is not a good sign. I know one concern I had against a large-scale widespread outbreak was a "dirty" warm sector but the warm sector is full of breaks. The RAP (using mesoanalysis) is developing widespread 2,000 J MLCAPE and > 200-250 J of 3km CAPE. That is very scary -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Two PDS watches coming as well -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
It is certainly possible. If the upper air pattern favors the advection of elevated mixed-layers (and for them to maintain their integrity) into our region then we'll certainly see our higher end severe events. This was the case in 1995 (as you said) as well as 1998. 2011 was also like this to an extent. -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
HOLY CRAP TWO AREAS Mesoscale Discussion 0391 NWS Storm Prediction Center Norman OK 1044 AM CDT Fri Mar 31 2023 Areas affected...ArkLaTex into parts of the Mid South Concerning...Severe potential...Tornado Watch likely Valid 311544Z - 311745Z Probability of Watch Issuance...95 percent SUMMARY...The threat for tornadic supercells will increase this afternoon. PDS Tornado Watch issuance is eventually expected for parts of the region. DISCUSSION...Weak elevated convection has been ongoing across parts of AR this morning, within a plume of rich low-level moisture and along the periphery of a lead shortwave moving across eastern portions of the central Plains. Additional convective development has been noted recently into southeast OK and northeast TX. Widespread cloudiness will tend to limit diurnal heating to some extent, but gradual warming amid increasingly rich low-level moisture will support MLCAPE increasing into the 1000-2000 J/kg range and weakening MLCINH with time. Area VWPs already depict very favorable wind profiles, with strong low-level (0-1 km SRH of 200-400 m2/s2) and deep-layer shear (effective shear of 60+ kt) expected to persist through the day. Tornadic supercells are expected to eventually evolve across the region this afternoon, with a few longer-lived supercells capable of producing strong/intense tornadoes possible, especially across AR toward the MS Valley. Onset timing of the greater threat remains somewhat uncertain, but one or more Tornado Watches will be required by early afternoon, with PDS Tornado Watch issuance expected across parts of AR toward the MS Valley. ..Dean/Hart.. 03/31/2023 -
Saturday, April 1, 2023 Convective Potential
weatherwiz replied to weatherwiz's topic in New England
Scary wording Mesoscale Discussion 0390 NWS Storm Prediction Center Norman OK 1037 AM CDT Fri Mar 31 2023 Areas affected...portions of southeastern Iowa...northwestern Illinois...and far northeastern Missouri Concerning...Outlook upgrade Valid 311537Z - 311630Z SUMMARY...Portions of the Moderate Risk over southeastern IA, northwestern IL, and far northeastern MO will be upgraded to a categorical High Risk in the 1630 UTC Convective outlook. DISCUSSION...An upgrade to a tornado-driven High Risk (30% probability) is expected for the 1630 UTC outlook. Environmental conditions are quickly becoming favorable to support the potential for numerous strong to potentially violent and long-track tornadoes across portions of southeastern IA, northwestern IL, and far northeastern MO. Please see the forthcoming Day 1 outlook update for more information. ..Lyons/Smith.. 03/31/2023 -
Yeah if this regime remains through the next few months it's going to be very active. In fact, I think we may be above-average for tornado counts this year thus far. There were some pretty impressive January and February events. There were even setups that didn't pan out so the counts could really be more. SST's are crazy warm in the Gulf so you get deep troughs into the West this time of year and strong s/w ejecting, it's a recipe for widespread outbreaks within that region.
