Jump to content

Tallis Rockwell

Members
  • Posts

    158
  • Joined

  • Last visited

Everything posted by Tallis Rockwell

  1. NAM is really showing something here...Could this be the first high risk of the year? The NAM model are starting to show more discrete cells ahead of the cold front, not a whole lot but a decent bit.
  2. E EDIT: The new outlook has a better picture ...DISCUSSION... The latest runs of the GFS and ECMWF appear to be in reasonable agreement with respect to synoptic-scale features through Day 4 and into the first half of the Day 5 period. After this, differences in the evolution of the large trough progged to crossing the Plains states Day 4 and then the Mississippi Day 5 begin to become fairly substantial. As such, confidence in the predictability of the pattern beyond day 5 is quite limited. In the mean time, some potential for the evolution of scattered to isolated severe storms remains apparent over the eastern Oklahoma and Arklatex region and surrounding areas Day 4 (Sunday 10-20), as a deepening surface low shifts out of the central and northern High Plains and eventually reaches the Minnesota vicinity. Correspondingly, a trailing cold front is shown crossing eastern Kansas/Oklahoma/western Texas during the afternoon, as warm-sector destabilization becomes diurnally maximized. As favorably strong flow aloft overspreads the region in tandem with the advancing surface front, at least isolated cells -- developing as residual capping is locally breached -- will evolve within a sheared environment likely supportive of rotating updrafts. Storms may diminish somewhat in intensity overnight, but it appears that reintensification of convection -- and regeneration of accompanying severe risk -- should occur across portions of the central Gulf Coast region, as the front continues its eastward advance through an amply moist/destabilizing low-level airmass. Again, potential for supercells, and all severe hazards, appears possible. By Day 6, model differences -- including with location of the surface frontal position -- have become substantial enough to preclude continuation of severe risk into the eastern Gulf Coast/southern Atlantic Coast states.
  3. The short range models are starting to agree with 20+ inch totals
  4. GFS NAM RAP hasn't reached to this time yet...either way this looks to be interesting
×
×
  • Create New...