Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 250806
SWOMCD
SPC MCD 250806
MSZ000-LAZ000-250900-

Mesoscale Discussion 0328
NWS Storm Prediction Center Norman OK
0306 AM CDT Sat Mar 25 2017

Areas affected...Parts of northeastern LA and western/central MS

Concerning...Severe Thunderstorm Watch 84...

Valid 250806Z - 250900Z

The severe weather threat for Severe Thunderstorm Watch 84
continues.

SUMMARY...An isolated strong to damaging wind threat continues
across Severe Thunderstorm Watch 84. A downstream watch/substantial
extension in area of the current watch into more of central/eastern
MS does not appear likely.

DISCUSSION...A surface observation from Greenville MS (KGLH)
revealed a peak wind gust of 49 kt at 0734Z with a bowing line
segment crossing the MS River. Isolated strong to damaging wind
gusts should remain possible along the length of a line of
thunderstorms that will move eastward into parts of western/central
MS over the next couple of hours. Instability becomes more marginal
with northward and eastward extent across MS, as surface dewpoints
decrease from the mid 60s to mid/upper 50s. Still, some weak
instability persists near and just east of the MS River, and the VWP
from KDGX shows southerly low-level winds of 35-50 kt veering to
southwesterly at mid-levels, which should support organization of
the line in the short term. However, the marginal thermodynamic
environment downstream will likely act to limit the overall severe
threat into central/eastern MS, and a downstream watch or
substantial eastward extension in area of the current watch does not
appear likely.

..Gleason.. 03/25/2017

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...JAN...

LAT...LON   31399112 31449192 32589180 33009108 33359096 33689091
            33679031 33638999 31449021 31399112



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