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| Mesoscale Discussion 619 |
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Mesoscale Discussion 0619
NWS Storm Prediction Center Norman OK
1254 PM CDT Sun May 17 2020
Areas affected...Much of MS
Concerning...Severe potential...Watch unlikely
Valid 171754Z - 172000Z
Probability of Watch Issuance...5 percent
SUMMARY...A few stronger storms capable of isolated damaging wind
gusts and/or small hail are possible across MS over the next few
hours.
DISCUSSION...Recent regional radar imagery shows scattered, mostly
cellular showers within the modest warm-sector confluence across MS.
Vertical shear and buoyancy are rather weak, as evidenced by the
lack of lightning and/or more organized storm structures. Air mass
across the region has warmed into the low to mid 80s with dewpoints
in the upper 60s/low 70s. Given the only partly cloudy skies, some
additional warming is possible. Despite these warm and moist
low-level conditions, poor lapse rates will continue to limit
instability. Vertical shear is also forecast to remain weak, as the
stronger low-level flow remains displaced north.
Even with this relatively marginal conditions, there is enough
instability and vertical shear for a few stronger storms,
particularly with northern extent where the shear is more favorable.
A predominantly multicellular mode is anticipated with isolated
instances of small hail and/or damaging wind gusts are possible.
..Mosier/Guyer.. 05/17/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MOB...MEG...JAN...LIX...
LAT...LON 34309073 34849041 35008975 34708855 33778831 31388855
31018985 31259101 33089096 34309073
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