Indystorm

Alexandria LA 75/71 calm wind Monroe 63/61

DGX radar showing a definite move n/ne with the storms as the WF progresses northward in MS.

Helicity increasing to 300 for the se TX area into Louisiana

That Houston photo is a classic all by itself.

URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 120 NWS Storm Prediction Center Norman OK 840 AM CDT Sun Apr 19 2020 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Western Louisiana East Texas Coastal Waters * Effective this Sunday morning and afternoon from 840 AM until 300 PM CDT. * Primary threats include... A few tornadoes likely with a couple intense tornadoes possible Widespread large hail and isolated very large hail events to 2.5 inches in diameter likely Scattered damaging wind gusts to 70 mph likely SUMMARY...Thunderstorms are expected to intensify this morning across east Texas and spread across the watch area through the afternoon. Large hail is the primary threat this morning. But increasing winds aloft will promote a risk of tornadoes by early afternoon. The tornado watch area is approximately along and 105 statute miles east and west of a line from 20 miles north of Shreveport LA to 55 miles southeast of Angleton TX. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0).

Noticed both of those things on Pivotal wx. Gonna get active, but the south or any part of the country doesn't need it particularly at this time.

Nice rain and snow squall coming thru here now. Temp at 40.

Good to see Tom Skilling recovered from surgery and back on WGN.

Glad you are ok after moving down south from our Great Lakes forum.

Classic overnight tornadoes in the South. Dixie seems to be particularly prone to this.

BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MORRISTOWN TN 1128 PM EDT SUN APR 12 2020 THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A * TORNADO WARNING FOR... BRADLEY COUNTY IN EAST TENNESSEE... WESTERN POLK COUNTY IN EAST TENNESSEE... * UNTIL MIDNIGHT EDT. * AT 1128 PM EDT, A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS LOCATED NEAR HARRISON, OR 9 MILES EAST OF CHATTANOOGA, MOVING EAST AT 45 MPH. THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW! HAZARD...DAMAGING TORNADO. SOURCE...RADAR CONFIRMED TORNADO. IMPACT...YOU ARE IN A LIFE-THREATENING SITUATION. FLYING DEBRIS MAY BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE HOMES WILL BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES, BUSINESSES, AND VEHICLES IS LIKELY AND COMPLETE DESTRUCTION IS POSSIBLE. * THE TORNADO WILL BE NEAR... WILDWOOD LAKE AND SOUTH CLEVELAND AROUND 1145 PM EDT. EAST CLEVELAND AROUND 1150 PM EDT. BENTON AROUND 1200 AM EDT.

Mesoscale Discussion 0371 NWS Storm Prediction Center Norman OK 0850 PM CDT Sun Apr 12 2020 Areas affected...central Alabama Concerning...Tornado Watch 109...110... Valid 130150Z - 130245Z The severe weather threat for Tornado Watch 109, 110 continues. SUMMARY...Storms are intensifying as they move into central Alabama, with local enhancement to the tornado risk evident. DISCUSSION...Latest radar loop shows a couple of storms intensifying within the broader north-northwest to south-southeast band of storms crossing Alabama and southeast Mississippi. The two strongest storms -- one moving into Cullman County and the other crossing Tuscaloosa county -- appear most intense at this time, with the southern storm likely having produced a tornado recently (70 kt rotational velocity and a small CC minimum have been observed within the past 15 minutes). As this storm continues moving north-northeastward, through the very favorable thermodynamic and kinematic environment that remains in place, the potential for a strong tornado and/or damaging wind gusts has increased for areas near and northwest of Birmingham.

Are you talking about the current cell north of Meridian about to move into western Al?

There may be too many cells moving over worked over territory except for the southern AL area. We shall see.

Couplet sw of the city bears watching.

Oh, goodness. I just remembered that this is about the time that the LLJ was expected to ramp up.

Or the April 11, 1965 Palm Sunday outbreak when Dunlap IN was hit by two F-4's within a half hour of each other.

I'm also concerned about the cell west/nw of Tuscaloosa area.

Thank you guys for explaining how the LL lapse rates contribute to breaking the cap when one is present.

I think Quincy somewhere back in this thread said something to the effect that you don't need low level lapse rates to be great if other parameters are off the charts.

What is it about Yazoo City MS and Moore OK?

Monroe population....just under 50,000

And it is somewhat surprising to see tornadoes this intense in the QLCS. Usually I expect rather modest spin ups.

Starting to get some svr action on the WAA wing in MS already as well.

That previous intense line in nw Louisiana seems to be breaking up into more discrete cells due to the insane helicity it is encountering.