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Tropical Global Model Runs Discussion 2018

Discussion in 'Tropical Weather' started by Snowfan, May 1, 2018.

  1. Snowfan

    Snowfan Member

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    The GFS has been consistently showing possible tropical or subtropical development near the Bahamas.
     
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  2. ForsythSnow

    ForsythSnow Moderator

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    Post about 2018 activity here.
     
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  3. ForsythSnow

    ForsythSnow Moderator

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    Happy hour seems to be a bit more enthusiastic about a subtropical system. The GFS's successor? Not excited at all. Looks like we should get a good model comparison this year having both the FV3 and the GFS easily comparable.
    [​IMG]
    [​IMG]
     
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  4. stormcentral

    stormcentral Storm Central Wx Member

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    gfs_mslp_pcpn_frzn_seus_22.png download.png
    00Z GFS develops a low for sure
     
  5. ForsythSnow

    ForsythSnow Moderator

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    And so it begins:

    1. A large area of showers and thunderstorms near the Bahamas is
    associated with an upper-level low pressure system and a surface
    trough. The system is forecast to move westward over the Florida
    peninsula on Saturday with no significant development. Locally
    heavy rains and gusty winds are possible over portions of the
    Bahamas and southern Florida through this weekend. Please monitor
    products from your local weather office for more details. No
    additional Special Outlooks on this system will be issued unless
    conditions warrant.
    * Formation chance through 48 hours...low...near 0 percent.
    * Formation chance through 5 days...low...near 0 percent.
     
  6. Brent

    Brent Member

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    actually doesn't look half bad for early May :p

    [​IMG]
     
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  7. stormcentral

    stormcentral Storm Central Wx Member

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    12Z GFS has something May 23
    gfs_mslp_pcpn_frzn_seus_52.png
     
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  8. ForsythSnow

    ForsythSnow Moderator

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    Ah yes, the fantasy range. To some fun to look at, but I don't think it's anything worth worrying about. If these keep happening, it may though.
     
  9. Brent

    Brent Member

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    Fantasy storm season has begun!
     
  10. GaWx

    GaWx Supporter Member

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    I'd bet heavily on the under on a LA hurricane hit near 5/23 and feel very safe about it. I'd almost feel safe betting the farm.

    However, as we get into late May/June, it is worth a mention that Gulf TC activity tends to be more active than normal in oncoming El Nino seasons (just in case we have El Nino coming). Then, after June, it tends to become less active than normal in oncoming El Nino seasons.
     
    Last edited: May 7, 2018
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  11. ForsythSnow

    ForsythSnow Moderator

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    Looks like the odds are increasing on the main GFS but the FV3 has this much stronger storm and it does make landfall too around Pensacola that run. May have our first legitimate threat.[​IMG]
     
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  12. GaWx

    GaWx Supporter Member

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    A cat 2 in the E GOM on 5/19 with a H hit on Pensacola on 5/21 on this FV3 run. I'll take the under again with high confidence though not quite as high confidence as I had going against the GFS run of yesterday hitting LA with a H on 5/23 because the E GOM would be favored over the W GOM should something freaky like this occur this early.
     
    Last edited: May 8, 2018
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  13. GaWx

    GaWx Supporter Member

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    The crazy 12Z FV3 has a cat 2 H in the E GOM that strengthens to 970 mb and then goes onshore and moves to about 75 miles SSE of Phil, just SE of Ocala, at hour 300 during the evening of 5/20. So, nothing to see here, folks.
     
    Last edited: May 8, 2018
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  14. ForsythSnow

    ForsythSnow Moderator

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    Well, we can get a good trial run on the FV3 here. Unfortunately, the GFS didn't do bad with sniffing stuff out in the LR last year, but was a bit dramatic at times. The Euro suppressed several big storms and completely missed major development in many. As for the run today, that's just another one showing an E Gulf impact. [​IMG]
     
  15. stormcentral

    stormcentral Storm Central Wx Member

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    18Z GFS FV3 tropical threat
    fv3p_mslp_pcpn_watl_40.png
     
  16. ForsythSnow

    ForsythSnow Moderator

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    Fantasy, but look where it heads.
    [​IMG]
     
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  17. Brent

    Brent Member

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    GFS and related GFS models sure raising eyebrows in the long range...

    not exactly buying a hurricane but hmmmm
     
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  18. ForsythSnow

    ForsythSnow Moderator

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    Latest FV3 puts the storm faster than the previous several runs and up the West coast of Florida.
    [​IMG]
     
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  19. accu35

    accu35 Member

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    GFS LA/MS area as well
     
  20. stormcentral

    stormcentral Storm Central Wx Member

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  21. stormcentral

    stormcentral Storm Central Wx Member

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    Tropical storm threat increasing
     
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  22. Brent

    Brent Member

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    GFS is showing signs of something in the Gulf out beyond 300 hours, very far out, but we'll see what happens

    One run today has gone towards Louisiana the 0z goes towards Northern Mexico
     
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  23. accu35

    accu35 Member

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    Gfs still showing a Tropical feature for a few runs now
     
  24. accu35

    accu35 Member

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    In the gulf
     
  25. Brent

    Brent Member

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    still there at 0z and timeframe seems to be moving along, forms around day 11-12
     
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  26. GaWx

    GaWx Supporter Member

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    # of W Caribbean/GOM geneses on record 1851-2017: mid-June climo much more active vs May and most active of any through 8/31

    May 1-10: 2
    May 11-20: 4
    May 21-31: 5
    June 1-10: 16
    June 11-20: 26
    June 21-30: 25
    July 1-10: 13
    July 11-20: 8
    July 21-31: 18
    Aug 1-10: 23
    Aug 11-20: 25
    Aug 21-31: 22

    So, in mid June, alone, there have been 26 geneses in 167 years or one every 6-7 years averaged out in a fairly small area/over 5 times the rate of late May. That's a steep enough ramp up and high enough ratio to take seriously if there were to be model consensus for genesis there once we get within 10 days. But we're obviously not to that point yet.
     
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  27. JLL1973

    JLL1973 Member

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    Only my luck. Im going on a carribbean cruise june 11 and gfs is hell bent on bring a tropical system in the same time frame
     
  28. dsaur

    dsaur Supporter Member

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    It has differed in strength and direction of travel, but Goofy has been consistent about it occurring, much like it did with Alberto. I like trop storms coming up by me, as it keeps the summer cool.....as long as they stay weak, lol. Picked up another 5/8's over night and this morning. I'm up to 8 3/4's since mid May, so any trop moisture will only add to my accumulating water wealth, and I'm very receptive to it :) Showers everyday in summer remind me of my youth, when it seemed normal ....drought reminds me of my old age, and I've seen way too much drought since the early 80's! I like the return to the standard of my youth.
     
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  29. GaWx

    GaWx Supporter Member

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    After holding onto a genesis date of 6/10 on about every run for several days, the GFS genesis date has finally started to slip. Also, the last several GEFS since 18Z have looked a bit less impressive. The GFS suite may be saying it is about to give up on this one, but there's still 6 days til 6/10. Note that the Euro/EPS still has essentially nothing.
     
  30. GaWx

    GaWx Supporter Member

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    The 12Z GEFS is strongly hinting at giving up the ghost as it has the least of any recent GEFS run on 6/10. Also, the 12Z GFS has nothing of note throughout the run.

    Even JB is doubting genesis anytime soon.

    Edit: Similar to recent Euro runs, today's 12Z Euro has nothing.
     
    Last edited: Jun 4, 2018

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