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Severe Weather 2026

Yeah. A severe weather threat return the first week of April seems like a good idea. In fact, you could tell in yesterday's 12z Euro that there was definitely potential around or just after April 3rd. Today's 12z Euro features a trough ejection by April 3rd.
 

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Verbatim I need that to slow down by a day or two. First chase day of the tour is the 3rd, if the warm sector is already east of the MS Valley by then we won't be able to catch it. Would suck to miss a big trough by a day and then have it sweep out the Gulf for a week. However it's just a nearly 400-hour op run so I'm not sweating it too much...yet.
 
Matthew Cappucci
@MatthewCappucci


Early April, particularly between April 1-8, looks active from a severe weather/tornado standpoint. We'll also likely see above-average rainfall across portions of the Ozarks, Mid-south and Mississippi Valley.A large-scale pattern reversal will favor troughing, or a jet stream dip in the west. Chilly air will spill south over the Rockies in that jet stream dip. Warmth and moisture will build in the east. Periodically, lobes of that cold pocket will pinch off, bowling eastwards and kicking up that warmer, wetter air mass over the Central U.S. With the jet stream roaring overhead, adding wind energy, some of the storms will be strong to severe. I expect an uptick in tornado activity as well.It's also the time of year when tornado activity tends to ramp up anyway. Now is a good time to clean the cobwebs out of the storm cellars, brush up on your severe weather plan and coordinate with friends, family and loved ones.


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12z HRRR suggests potential for a severe thunderstorm warning spam day in PA, with several discrete supercells capable of damaging wind/large hail. Do not see tornado potential with these. May need a large eastward expansion of the slight risk to account for this convection. After 00z, likely a elevated bow echo with slightly severe potential. SE OH does fire but a limited window for damaging wind/large hail due to crapvection leading behind. Interesting day ahead for svr potential on Sunday
 

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12z NAM had a pretty good uptrend in a narrow corridor from central OH to eastern PA, from the looks of it. I'd like to hear some inputs on the analogs being shown, if any. Here's a sounding from eastern OH at 18z for the 12z NAM run today:
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Think NAM is overhyping Sunday. Whilst I can see widespread svr convection with eastward extent, i do not see much tornadic potential with the limited LLJ
 
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