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OKTWISTER

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  1. Mississippi AR-Pemiscot MO-Dunklin MO-Dyer TN-Lake TN-
    753 PM CST Fri Dec 10 2021

    ...TORNADO EMERGENCY FOR Southern Dunklin and Pemiscot 
    counties including Denton and Steele...

    ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CST FOR NORTH
    CENTRAL MISSISSIPPI...PEMISCOT...SOUTHEASTERN DUNKLIN...NORTHWESTERN
    DYER AND SOUTHWESTERN LAKE COUNTIES...
            
    At 751 PM CST, a confirmed large and destructive tornado was located
    near Hornersville, or 7 miles north of Gosnell, moving northeast at
    50 mph.

    TORNADO EMERGENCY for Southern Dunklin and Pemiscot counties 
    including Denton and Steele. This is a PARTICULARLY DANGEROUS 
    SITUATION. TAKE COVER NOW!

    HAZARD...Deadly tornado.

  2. OKLAHOMA OCTOBER TORNADO RECORD SET: MORE TO COME?

    IMG_1121.thumb.jpg.217b961d4ce7565e25259e55320ed397.jpg

     

    day4prob.gif

     Day 4-8 Convective Outlook  
       NWS Storm Prediction Center Norman OK
       0318 AM CDT Thu Oct 21 2021
    
       Valid 241200Z - 291200Z
    
       ...DISCUSSION...
       (Day 4) Models are trending toward better agreement and have
       demonstrated some run-to-run consistency regarding the evolution of
       a southern-stream shortwave trough forecast to amplify as it
       approaches the southern and central High Plains Saturday night. This
       feature will move through the central/southern Plains Sunday before
       reaching the middle/lower MS Valley Sunday evening. There are still
       some model differences, particularly with regard to the amplitude
       and speed of this system. 
    
       Deepening lee low should be situated over central KS by 12Z Sunday
       with a trailing cold front extending southwestward into western TX.
       A warm front will stretch eastward from the low through northern KS
       and into central MO. Partially modified Gulf air will advect through
       the warm sector beneath steeper mid-level lapse rates resulting in
       moderate instability during the afternoon. A capping inversion will
       delay surface-based thunderstorm initiation until mid afternoon when
       storms will likely develop along the cold front across central
       eastern KS into eastern OK as well as farther east along the warm
       conveyor belt into the lower MS Valley. Vertical wind profiles will
       support organized storms including supercells with potential for all
       severe hazards. Given some lingering model differences, will only
       introduce 15% category for this outlook, but higher probabilities
       might be warranted with better model agreement in later updates.
    
       (Day 5) - A severe threat will probably persist as this feature
       continues into the TN Valley region Monday and possibly the Middle
       Atlantic region Tuesday. However, model difference become more
       substantial at this time frame, so will defer introduction of any
       categorical risk areas to possibly the next update.
    
       (Days 6-7) - Models including most ensemble members are in
       reasonable agreement regarding the approach of an upper trough into
       the Plains with robust moisture return toward the early and middle
       part of next week. If these trends continue, a severe risk area may
       be introduced for portions of the central and southern Plains in the
       next 4-8 outlook update.

     

  3. Looking at the NWS Tulsa Discussion today I think the better chance of a strong tornado may be SE/SC KS near the boundary.  Will have to see where that is in the afternoon I think with no cap it will line up quickly and become a wind event.  I also hate QLCS tornadoes as they are not going to be easy to see as everything is going to be in heavy precipitation with possible flash flooding issues.  It is almost feeling like Derecho time. 

    Tomorrow will finally signify a change in the upper level pattern,
    switching from the southerly flow aloft that has been providing a
    steady stream of clouds and moisture form the Gulf over a majority 
    of the past two weeks. More westerly flow aloft will arrive
    Wednesday, which should aid in clearing out some of the clouds and
    providing the region with some sunshine. With the sunshine comes
    warming temperatures with highs climbing back to near and above
    average for the next few days. The main focus in this period
    continues to be the threat for some significant severe weather to
    affect the area Thursday afternoon and especially into the evening
    and overnight hours. Thursday afternoon will be warm and moist
    ahead of a frontal boundary that will be draped across southern
    Kansas during the afternoon hours. Large instability and little to
    no cap could lead to supercell development in the afternoon
    across northeast Oklahoma. All hazards would be possible with this
    initial development, although it is less certain that storms will
    fire in this area with the lack of large scale forcing in place.
    More likely is that storms will develop along the boundary in
    southern Kansas by late afternoon and grow upscale into a large
    convective complex that will then surge south across the area. A
    large swath of damaging wind gusts will be possible with this
    line. Additionally, low level shear will still be in place ahead
    of the line and the possibility for tornadoes to develop along
    the leading edge will be possible as well. continue to monitor the
    latest forecast updates for more details.

     

  4. Latest from NWS Tulsa for Thursday. 

     

    Hazardous Weather Outlook
    National Weather Service Tulsa OK
    147 PM CDT Tue May 25 2021
    
    ARZ001-002-010-011-019-020-029-OKZ049-053>076-261045-
    Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
    Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
    Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
    Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
    Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
    Washington OK-Washington AR-
    147 PM CDT Tue May 25 2021
    
    This Outlook is for Northwest and West Central Arkansas as well as
    much of Eastern Oklahoma.
    
    .DAY ONE...This Afternoon and Tonight.
    
    SEVERE THUNDERSTORM.
    RISK...Limited.
    AREA...Far Southeast Oklahoma.
    ONSET...Ongoing...ending by early evening.
    
    FLASH FLOOD.
    RISK...Limited.
    AREA...Southeast Oklahoma; Northwest Arkansas.
    ONSET...Ongoing.
    
    HEAVY RAIN.
    RISK...Limited.
    AREA...Southeast Oklahoma; Northwest Arkansas.
    ONSET...Ongoing.
    
    DISCUSSION...
    
    There is a limited severe storm risk mainly across southeast
    Oklahoma this afternoon. Damaging winds are the main threat.
    Locally heavy rainfall fell across portions of southeast Oklahoma
    this afternoon, shifting into northwest Arkansas. Another round of
    heavy rain is possible with the afternoon storms over the same
    areas. Thus, there is limited flash flood potential thru early
    evening.
    
    SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
    Local Spotter Activation May Be Needed.
    
    .DAYS TWO THROUGH SEVEN...Wednesday through Monday.
    WEDNESDAY...Thunderstorm Potential.
    THURSDAY...Severe Thunderstorm Potential...High Wind Potential...Heavy Rain Potential.
    FRIDAY thru MONDAY...Thunderstorm Potential.
    
    EXTENDED DISCUSSION...
    
    Storm coverage on Wednesday will be isolated at best and during
    the afternoon, mainly across far eastern Oklahoma and western
    Arkansas. Severe weather is not expected.
    
    A high impact weather event is expected from Thursday afternoon
    and night. Severe storms are expected to form ahead of a cool
    front across northeast Oklahoma Thursday afternoon and then grow
    into a complex and move into western Arkansas and southeast
    Oklahoma Thursday night. The initial storms across northeast
    Oklahoma will pose the threat for tornadoes, very large hail to 2
    inches in diameter or greater, and damaging winds. Due to the very
    unstable airmass expected to be in place, and the potential for a
    boundary to be draped across the region, there is potential for a
    strong tornado. After storms congeal into a complex, wider swaths
    of damaging winds will become the main severe concern. The severe
    threat on Friday afternoon will be confined mainly to southeast
    Oklahoma ahead of a cool front.
    
    While storm chances remain in the forecast thru the weekend and
    into early next week, severe weather is not expected during this
    time.
    
    Repeated heavy rainfall on top of saturated soils may lead to
    an increasing flood threat later this week in addition to the
    severe weather potential.
    • Like 1
  5. The NWS Tulsa is backing way off on the severe weather next week up in the Tulsa area. Looks like timing and the system going further south really cut back the threat. 

     

    NWS TULSA

    DISCUSSION...
    A few showers will linger across the area this morning as an upper
    system departs to the east, with the greatest coverage of showers
    across far eastern Oklahoma and northwest Arkansas. Skies will
    clear this afternoon, but breezy northerly winds will keep
    temperatures below the seasonal normals.
    
    Strong southerly winds return Sunday through Tuesday, which will
    result in temperatures warming to much above normal levels early
    next week. Recent trends in the data suggest a slower, more
    southerly track to the next storm system that will affect the area
    during the middle part of next week. While there certainly remains
    some severe weather potential with this system, heavy rainfall and
    flash flooding may eventually become a bigger concern given the
    slower southerly track. Several rounds of showers and storms will
    likely occur from late Tuesday night through Thursday before this
    system finally exits our area, bringing drier weather with near
    seasonable temperatures heading into next weekend.
    
    Adjusted the National Blend of Models pops and temperatures some
    with the midweek system to account for the slower timing, but
    otherwise stayed fairly close to the NBM forecast.

     

    hwo.gif

  6. day5prob.gif

     

    Day 4-8 Convective Outlook  
       NWS Storm Prediction Center Norman OK
       0344 AM CDT Sat Apr 03 2021
    
       Valid 061200Z - 111200Z
    
       ...DISCUSSION...
       Medium-range model guidance is converging towards a scenario of a
       western U.S. trough evolving into a closed mid-level low over the
       central U.S. during the early half of the extended period.  Severe
       potential will likely focus on Tuesday across KS and possibly OK
       near a dryline with storms developing eastward overnight. 
       Uncertainty remains regarding moisture quality and capping concerns
       but hail/wind are the main threats with this activity.  Higher
       confidence exists for organized severe storms on Wednesday from the
       Ozarks eastward to the MS Valley as high momentum flow overspreads a
       potential moderately unstable boundary layer centered on Arkansas. 
       All hazards are possible.  A separate bi-modal area of concern could
       develop farther north but there is low confidence in this scenario. 
       Uncertainty increases by Thursday owing in part to model spread and
       potential consequential effects of appreciable convective
       overturning for areas farther east/southeast on Thursday (day 6). 
       Model variability increases during the latter part of the extended
       period.

     

    Not much but something in a very dry period.....

     

    Hazardous Weather Outlook
    National Weather Service Tulsa OK
    446 PM CDT Sat Apr 3 2021
    
    ARZ001-002-010-011-019-020-029-OKZ049-053>076-041030-
    Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
    Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
    Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
    Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
    Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
    Washington OK-Washington AR-
    446 PM CDT Sat Apr 3 2021
    
    This Outlook is for Northwest and West Central Arkansas as well as
    much of Eastern Oklahoma.
    
    .DAY ONE...Today and Tonight.
    
    SIGNIFICANT WINDS.
    RISK...Limited.
        AREA...Northeast Oklahoma.
        ONSET...Ongoing...diminishing around sunset.
    
    FIRE WEATHER DANGER.
    RISK...Elevated.
    AREA...Northeast Oklahoma and Far Northwest Arkansas.
    ONSET...Ongoing...improving around sunset.
    
    DISCUSSION...
    Winds gusting 15 to 25 mph will remain common through the early
    evening hours. These winds along with warm temperatures and low
    humidity values will continue to support high grassland fire
    spread rates across much of northeast Oklahoma and far northwest
    Arkansas. Winds will decrease around sunset and fire weather
    conditions will improve.
    
    SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
    Spotter Activation Not Expected.
    
    .DAYS TWO THROUGH SEVEN...Sunday through Friday.
    SUNDAY...High Fire Weather Potential.
    MONDAY...High Fire Weather and High Wind Potential.
    TUESDAY...Thunderstorm, High Fire Weather and High Wind Potential.
    WEDNESDAY...Strong to Severe Thunderstorm, High Fire Weather and
    High Wind Potential.
    THURSDAY...High Fire Weather Potential.
    FRIDAY...No Hazards.
    
    EXTENDED DISCUSSION...
    Warm and windy conditions will elevate fire weather concerns this
    weekend and into much of next week. A storm system will move
    into the Plains Wednesday. A few strong to severe storms may
    develop across far eastern Oklahoma and western Arkansas
    Wednesday afternoon.

     

    • Like 1
  7. 11 minutes ago, Upper Level LOL said:

    This is needlessly scaremongering and doesn't fit the parameters we see. We're going to see a lot of low-end tornadoes since the warm sector has essentially no cap. This will prevent bigger storms from firing. The threat of tomorrow aren't EF4-EF5s, but a firehose of EF2's and EF3's. I hope your reputation among your friends and family doesn't suffer from crying wolf about this.

    I don’t know how many EF3 tornadoes in a metro area you have worked but several EF 3 tornadoes is not crying wolf. Very significant threat with nighttime tornadoes irregardless of ultimate ratings. 

    • Like 1
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