Powerball

I don't recall there ever being so many hail reports in a day (I'm sure there has been, but it doesn't happen often), especially spread across such a wide area and outpacing wind reports 2-to-1.

For perspective, baseball-sized hail is only 2.75" in diameter: 0104 300 ITALY ELLIS TX 3219 9689 IMAGE OF MEASURED 3 INCH HAIL. (FWD)

Mesoscale Discussion 0354 NWS Storm Prediction Center Norman OK 0821 PM CDT Fri Apr 09 2021 Areas affected...parts of north Texas Concerning...Severe Thunderstorm Watch 82... Valid 100121Z - 100415Z The severe weather threat for Severe Thunderstorm Watch 82 continues. SUMMARY...Sporadic cells capable of large hail remain possible within WW 82. A squall line is expected to back build southwestward along the front later this evening, with damaging wind potential into north Texas. DISCUSSION...The 00Z FWD sounding shows strong instability, with very steep lapse rates aloft and around 3500 J/kg MLCAPE. The hodograph is mostly straightline, supporting splitting cells in the Dallas area. A strong cold front is currently surging southeast across southern OK and into northwest TX. A squall line is taking shape over southern OK, and further back building is expected as the strong convergence interacts with the more unstable air mass south of the Red River. Therefore, in addition to a hail threat in the short term, a damaging wind threat may take shape over the next several hours. It is difficult to determine how far southwest the squall line will build, but portions of the I-35 corridor may be at risk this evening. ..Jewell.. 04/10/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SHV...TSA...FWD...OUN... LAT...LON 31449788 32719731 33449692 33959680 34149637 34099567 33829523 32859547 31869575 31519628 31219703 31129752 31449788

Severe Thunderstorm Warning TXC113-100200- /O.NEW.KFWD.SV.W.0065.210410T0059Z-210410T0200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Fort Worth TX 759 PM CDT Fri Apr 9 2021 The National Weather Service in Fort Worth has issued a * Severe Thunderstorm Warning for... Central Dallas County in north central Texas... * Until 900 PM CDT. * At 758 PM CDT, a severe thunderstorm was located near Rowlett, moving east at 20 mph. Another severe thunderstorms was located near Cockrell Hill moving east at 20 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Dallas, Garland, Irving, Grand Prairie, Mesquite, Carrollton, Richardson, Rowlett, Wylie, Duncanville, Lancaster, Farmers Branch, University Park, Sachse, Addison, Highland Park, Cockrell Hill and Buckingham. This includes the following highways... Interstate 35E between mile markers 418 and 440. Interstate 20 between mile markers 467 and 471. Interstate 30 between mile markers 34 and 57. Interstate 45 between mile markers 276 and 284. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection get inside a sturdy structure and stay away from windows. && LAT...LON 3298 9652 3262 9676 3272 9704 3299 9685 TIME...MOT...LOC 0058Z 283DEG 17KT 3288 9659 HAIL...1.00IN WIND...60MPH $$

Cells have gone up along I-30 now, from SW Dallas to Rowlett

No.

Well damn. It looks like the cap is gone too.

There's still a brief window for something to develop as the cold front pushes through. This is the latest HRRR's forecast sounding at 00z.

We're getting an awesome sunset, with the thick layer of haze and the increasing CU field. The sky literally looks like fire.

And here's the video of the hail from Grandview, TX

It looks like another cell might be trying to develop just north of that monster cell off its outflow, which (if it does) would impact the southside of Dallas proper.

2326 175 GRANDVIEW JOHNSON TX 3227 9718 SOCIAL MEDIA VIDEO OF GOLF BALL SIZE HAIL. (FWD) 2320 150 GRANDVIEW JOHNSON TX 3227 9718 SOCIAL MEDIA IMAGE OF PING PONG SIZE HAIL. (FWD) 2325 200 1 ENE GRANDVIEW JOHNSON TX 3227 9717 SOCIAL MEDIA IMAGE OF MEASURED 2 INCH HAIL. TIME ESTIMATED VIA RADAR. (FWD)

Severe Thunderstorm Warning TXC113-100045- /O.NEW.KFWD.SV.W.0061.210410T0001Z-210410T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Fort Worth TX 701 PM CDT Fri Apr 9 2021 The National Weather Service in Fort Worth has issued a * Severe Thunderstorm Warning for... Southern Dallas County in north central Texas... * Until 745 PM CDT. * At 701 PM CDT, a severe thunderstorm was located over Ovilla, or over Glenn Heights, moving east at 35 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Dallas, Garland, Grand Prairie, Mesquite, Rowlett, Desoto, Cedar Hill, Duncanville, Lancaster, Balch Springs, Seagoville, Glenn Heights, Red Oak, Hutchins, Cockrell Hill, Sunnyvale, Wilmer, Ovilla, Ferris and Combine. This includes the following highways... Interstate 35E between mile markers 411 and 428. Interstate 20 between mile markers 459 and 484. Interstate 30 between mile markers 42 and 64. Interstate 45 between mile markers 267 and 284. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection get inside a sturdy structure and stay away from windows. && LAT...LON 3254 9653 3255 9704 3257 9704 3277 9686 3290 9652 TIME...MOT...LOC 0001Z 248DEG 31KT 3254 9689 HAIL...1.25IN WIND...60MPH $$ 12

And here we go... Severe Thunderstorm Warning TXC139-217-251-100030- /O.NEW.KFWD.SV.W.0059.210409T2323Z-210410T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Fort Worth TX 623 PM CDT Fri Apr 9 2021 The National Weather Service in Fort Worth has issued a * Severe Thunderstorm Warning for... East central Johnson County in north central Texas... Northeastern Hill County in central Texas... Southwestern Ellis County in north central Texas... * Until 730 PM CDT. * At 623 PM CDT, a severe thunderstorm was located over Grandview, or 9 miles south of Alvarado, moving east at 15 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Waxahachie, Italy, Grandview, Maypearl, Milford and Mertens. This includes the following highways... Interstate 35W between mile markers 8 and 22. Interstate 35E between mile markers 376 and 397. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection get inside a sturdy structure and stay away from windows. && LAT...LON 3214 9676 3207 9690 3201 9685 3200 9686 3223 9725 3236 9720 3237 9676 3216 9674 TIME...MOT...LOC 2323Z 284DEG 13KT 3228 9717 HAIL...1.75IN WIND...60MPH $$ 12

It looks like a nice cell is finally trying to get going down towards Alvarado, TX.

It's only the first part of April though Got a good 2 months to go before the climatological peak for severe weather in Indianapolis.

Not really sure why it looks like this, but it shows the cap has weakened significantly...

Yes, that's it. Right behind it, Mineral Wells is at 92*F.

URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 82 NWS Storm Prediction Center Norman OK 425 PM CDT Fri Apr 9 2021 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of North and central Texas * Effective this Friday afternoon and evening from 425 PM until 1100 PM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2.5 inches in diameter likely Isolated significant damaging wind gusts to 75 mph possible A tornado or two possible SUMMARY...Multiple supercells are expected to develop along the dryline, first near the Waco vicinity and eventually farther north towards the Metroplex. Large hail up to baseball size should be the primary threat. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 20 miles east northeast of Sherman TX to 30 miles southeast of Temple TX. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 76...WW 77...WW 78...WW 79...WW 80...WW 81... AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 29030. ...Grams

Called it, lol... Mesoscale Discussion 0346 NWS Storm Prediction Center Norman OK 0359 PM CDT Fri Apr 09 2021 Areas affected...Parts of central Texas Concerning...Severe potential...Watch possible Valid 092059Z - 092300Z Probability of Watch Issuance...40 percent SUMMARY...Isolated to widely scattered intense thunderstorms increasingly possible through 5-6 PM, accompanied by the risk for large, potentially damaging, hail and locally strong surface gusts. A severe weather watch may be needed within the next hour or so. DISCUSSION...The deepening moist boundary layer has become strongly unstable along/east of the dryline which is still just west of the Interstate 35 corridor, across north central through central Texas. As mid-level troughing begins to overspread this region, it appears that cooling aloft is contributing to weakening of initially strong mid-level inhibition. Initial attempts at thunderstorm development may be underway to the west of the dryline, based on recent satellite imagery, and isolated to widely scattered thunderstorm development appears possible through 22-23Z. Strongest deep-layer shear, beneath the high-level jet of lower-latitude Pacific origin, is generally south of the Dallas-Fort Worth Metroplex, between Waco and San Antonio, where potential for supercells currently seems highest. This probably will be accompanied by a risk for large, potentially damaging hail, and locally strong surface gusts into early evening. ..Kerr/Thompson.. 04/09/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...HGX...FWD...EWX... LAT...LON 32539781 32609689 30859676 29859735 29379815 29539867 29889878 30729831 32539781

The area circled below (the line of agitated CU ) is going to be the place to watch for any storms that first initiate along the dry line...

Yes. A very strong one at that.

18z sounding from FWD. They're going to do another sounding at 21z