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March 22-28, 2023 | Severe Weather/Heavy Rain/Flooding


Iceresistance

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3 minutes ago, CentralLA_Wx said:

Storms past me now. Got an intense tstorm here a little while ago with multiple close range lightning strikes. Didn’t notice any hail. Here’s a pic of the sky looking northeast. https://imgur.com/a/Ia0RyAh

Nothing much, at least you are north of the boundary when the storm came though.

 

I also had a lot of very close lightning when I had the storms myself.

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The Rolling Fork/Silver City tornado has been given a preliminary EF4 rating with 59 mile path length and 3/4 mile wide. The Black Hawk to Winona is preliminary EF3 with 29 mile path length and 1/2 mile wide.

 

Quote
Public Information Statement
National Weather Service Jackson MS
307 PM CST Sun Mar 26 2023

...NWS DAMAGE SURVEY FOR 3/24/2023 TORNADO EVENT...

National Weather Service Jackson survey teams are continuing to
complete damage assessments for tornadic thunderstorms which moved
across the region on the night of Friday, March 24th.

A preliminary rating of EF4 has been determined for the tornado that
impacted Rolling Fork and Silver City. The approximately 59 mile
path of this tornado began around 757 PM over northern Issaquena
County then tracked into Sharkey County through Rolling Fork,
continued through Humphreys County near Midnight and through Silver
City, then crossed into Holmes County passing north of Tchula and
through Morgan Brake National Wildlife Refuge before ending west of
Acona around 908 PM. The maximum width of the tornado was 3/4 mile.

A preliminary rating of EF3 has been determined for the tornado that
tracked from near Blackhawk in southern Carroll County beginning
around 912 PM into Montgomery County near Winona and ending just
north of Kilmichael around 937 PM. This tornado had an approximately
29 mile path and maximum width of 1/2 mile.

We are still in the process of collecting information for our survey
and organizing the survey results, and we hope to be able to provide
additional detail on Monday. However, the survey process may still
take several more days, with additional adjustments possible.

We would like to express special thanks to the PERiLS Project and
NSSL for their ongoing assistance and expertise with this survey
process.

&&

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0...Weak......65 to 85 mph
EF1...Weak......86 to 110 mph
EF2...Strong....111 to 135 mph
EF3...Strong....136 to 165 mph
EF4...Violent...166 to 200 mph
EF5...Violent...>200 mph

NOTE:
The information in this statement is preliminary and subject to
change pending final review of the events and publication in NWS
Storm Data.

$$

BP/DL/CE/LM/CR

 

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7 minutes ago, snowlover2 said:

The Rolling Fork/Silver City tornado has been given a preliminary EF4 rating with 59 mile path length and 3/4 mile wide. The Black Hawk to Winona is preliminary EF3 with 29 mile path length and 1/2 mile wide.

 

 

I just tried to use google maps to draw a distance line with the distance tool . why does that suck now? I can't extend the line. It just adds segments, the line doesn't extend. Here's my try to extend the line beyond 51 miles, to approximately map out the Rolling Fork tornado. I failed.

Clipboard02io.jpg

Edited by Chinook
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Wow I guess I wasn't paying very good attention today. I knew things could get pretty ugly today but I did not expect this type of parameter space. 

Screenshot2023-03-26171246.thumb.png.e224cfff19617a3e4e2b7b227d34e717.png

Any discrete storms in the green circled area will have the best tornado chance, surface vorticity and 0-3km ML CAPE overlap really well in the circled area (where the blues and the reds overlap). If a supercell finds its way into the bullseye we could see definitely see an intense tornado. 

Screenshot2023-03-26171452.thumb.png.37c41376cf6aa4b56302d1dbf538e9f0.png

 

Edited by Neoncyclone
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latest tornado warning with the large supercell

Quote

* Until 545 PM CDT.
    
* At 517 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Cottonport, or near Moreauville, moving northeast
  at 35 mph.

 

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Quote
 Mesoscale Discussion 0361
   NWS Storm Prediction Center Norman OK
   0511 PM CDT Sun Mar 26 2023

   Areas affected...Central Alabama

   Concerning...Severe potential...Tornado Watch likely 

   Valid 262211Z - 262345Z

   Probability of Watch Issuance...80 percent

   SUMMARY...A tornado watch will likely be issued by 2245Z for parts
   of central AL, as an additional round of severe storms spread
   eastward from MS this evening.

   DISCUSSION...An east/west-oriented, outflow-modified moisture
   gradient extends across parts of central AL (near/just south of
   Birmingham). While a few strong to severe storms are ongoing south
   of this boundary (in Severe Thunderstorm Watch 86), an additional
   round of severe thunderstorms is expected to evolve out of eastern
   MS and perhaps southern AL in the next few hours. This activity will
   be aided by a developing/strengthening low-level jet (and related
   warm advection) over the central Gulf Coast later this evening. The
   strengthening southerly low-level jet beneath enhanced
   west-southwesterly flow aloft will favor discrete or semi-discrete
   supercell development given the weak large-scale ascent. With
   increasing low-level streamwise vorticity and surface-based inflow
   for these discrete/semi-discrete supercells, the tornado threat
   (along with hail and damaging winds) will gradually increase.
   Therefore, a tornado watch will likely be issued by 2245Z.

   ..Weinman/Thompson.. 03/26/2023

 

mcd0361.png

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Just now, Iceresistance said:

The one Brad Arnold is on, why is it weakening?

Not sure, crossed the LA/MS border and just died, almost looks like some kind of boundary or outflow sheared it out, you can kind of see it push north out of the storm as it crosses the border.

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Quote
URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 89
   NWS Storm Prediction Center Norman OK
   550 PM CDT Sun Mar 26 2023

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Central and southern Alabama

   * Effective this Sunday afternoon and Monday morning from 550 PM
     until 100 AM CDT.

   * Primary threats include...
     A few tornadoes likely with a couple intense tornadoes possible
     Scattered large hail and isolated very large hail events to 3
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph likely

   SUMMARY...Initial splitting supercells will persist this evening
   across southern/central Alabama, with the threat for isolated very
   large hail (2-3 inches in diameter).  Later this evening, supercell
   clusters will spread eastward from Mississippi into Alabama, when
   the storm environment will become more favorable for tornadoes (a
   couple of which could be strong).  The threat for damaging winds to
   70 mph and very large hail will persist into the early overnight
   hours.

   The tornado watch area is approximately along and 60 statute miles
   north and south of a line from 85 miles west of Selma AL to 15 miles
   east southeast of Auburn AL. For a complete depiction of the watch
   see the associated watch outline update (WOUS64 KWNS WOU9).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Tornado Watch means conditions are favorable for
   tornadoes and 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 86...WW 87...WW 88...

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 3 inches. Extreme turbulence and surface wind
   gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean
   storm motion vector 25035.

   ...Thompson

 

ww0089_radar.gif

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3 minutes ago, Neoncyclone said:

Storm near Soso MS is starting to look better on velocity. Things are starting to ramp up all around, safe to say the LLJ is starting to kick in now that the sun is setting.

Screenshot2023-03-26182913.thumb.png.5163029ee88cb8f4fa257899b1f48be5.png

One near Meridian, MS is also looking better.

 

I've just noticed the one near Prentiss with a couplet as well.

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