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Mesoscale Discussion 180 |
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Mesoscale Discussion 0180
NWS Storm Prediction Center Norman OK
0843 PM CDT Fri Mar 14 2025
Areas affected...Central Arkansas into far south-central Missouri
Concerning...Tornado Watch 32...
Valid 150143Z - 150345Z
The severe weather threat for Tornado Watch 32 continues.
SUMMARY...Multiple supercells across central/north-central AR will
pose an increasing tornado threat as they migrate eastward through
the next couple of hours, including the potential for a significant
tornado.
DISCUSSION...Supercells moving out of northwest AR are becoming
increasingly organized with several well-defined mid-level
mesocyclones evident in KLZK and KSGF velocity imagery. These storms
are moving into an environment characterized by STP values on the
order of 3-5, which is largely being driven by a corridor of warm
air advection between 925-850 mb over north-central AR. This diffuse
warm frontal zone is supporting veering winds through the lowest 2
km with a 0-1 km SRH value of 300 m2/s2 sampled by the 00z LZK
sounding and around 450 m2/s2 recently sampled by the KLZK VWP. This
environment is typically supportive of robust, long-lived supercells
with an attendant threat for tornadoes, including significant
(EF-2+) tornadoes. The aforementioned convective trends suggest that
cells are beginning to realize this environment and that the
downstream tornado threat is likely increasing across central to
north-central AR.
..Moore.. 03/15/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...PAH...LZK...SGF...
LAT...LON 34949341 35369323 35919296 36399258 36599234 36819141
36799115 36629090 36399083 36139100 35809120 35109178
34769215 34699252 34699289 34719318 34799340 34949341
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