05/06 2009
Short forecast for tomorrow and day after
I am running out of time attm to give a detailed outlook over the upcoming two days, but it does look interesting for both days. Thursday look an interesting setup over E OK into SE KS and MO, increasing LL jet ahead of developing SFC low in southern high Plains with returning moisture into the central Plains should create favorable environment for supercell development. My first guess would be Independence, KS as further south, even wind profiles are slightly better, strong cap could surpress storm initiation with a lack of SFC convergence and especially very warm mid-levels (high H85 temps) and lack of ascent.
On Friday, right entrance of strong upper-level zonal flow across US should pose enough ascent/upper-level divergence for storm initiation near triple point and southwards along the dryline in south OK, as SFC low deepens in SW OK during the afternoon. Rather strong cap will definatelly be holding storm initiation well into the late afternoon, but today 12z WRF run has it eroded easily after 21z timeframe, as a result of strong ascent under upper-level divergence and steepening lapse rates. Deepening SFC low over SW OK should create strong enough SFC convergence along the dryline as well as strong SFC heating is expected as it will likely be clear over warm sector. Low-level veering wind profiles again look very impressive with WNW flow aloft and extreme CAPE…overlaping together. Again massive gigantic baseballs and couple of tornadoes ca be expected with any isolated supercells that will form. Storm motion will be ESE and my best bet for initial target, at least from 12z NAM/WRF, would be Waurika, OK. GFS has triple point more south towards Throckmorton, but thats not confident enough and I’d put my bets on WRF simulations. Well still its 2 days out, so likely I’ll have a closer look and more details for Friday tomorrow afternoon.
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