...20z Update...
In general, the ongoing forecast remains on track with only minor
adjustments needed. An organized squall line continues to push east
across the lower MS River Valley. Regional radar imagery shows
discrete/semi-discrete cells developing ahead of the line across
southeast LA into southwest MS. The greatest wind/tornado threat is
expected to remain across this region and spread into southern MS/AL
through late afternoon/evening as higher-quality moisture (denoted
by dewpoints in the 60s) spreads east in tandem with the axis of
stronger (40-50 knot) 925-850 mb flow. 5% wind/hail probabilities
were expanded slightly across parts of northern OK/southern KS where
very cold temperatures aloft coupled with surface temperatures
climbing into the low 60s along/behind a weak surface warm front.
Isolated to scattered convection is gradually developing within this
zone per recent satellite imagery, and may mature sufficiently to
pose an isolated hail/wind risk across the region. 2% tornado
probabilities were maintained along the warm frontal boundary where
low-level vorticity/CAPE may be adequate for a brief/weak tornado.
See the previous discussion below for additional details.
..Moore.. 03/04/2025