Mesoscale Discussion 0641
NWS Storm Prediction Center Norman OK
0549 PM CDT Sun May 16 2021
Areas affected...Central Missouri and West-Central Illinois
Concerning...Severe potential...Watch unlikely
Valid 162249Z - 170015Z
Probability of Watch Issuance...5 percent
SUMMARY...A few storms capable of severe hail and damaging winds
possible this evening.
DISCUSSION...Regional surface analysis shows a convectively
reinforced east-west oriented baroclinic zone/stationary boundary
situated along the I-70 corridor across central Missouri. South of
this boundary, southerly low-level flow is present, with surface dew
point temperatures in the low 60s F and 20-25 kt of flow at 850 mb.
These factors are providing the impetus for renewed convective
development along and north of the boundary. South of the boundary,
the environment features modest indices to support severe
convection, including MUCAPE of 1000-1500 J/kg, low-level lapse
rates near 7-8 C/km, and effective bulk shear of 30-35 kt. Given
these conditions, a few strong storms are possible, posing a threat
for severe hail and damaging wind gusts. Current trends suggest this
activity should remain fairly isolated, and thus, a watch issuance
is not anticipated at this time.
..Karstens/Grams.. 05/16/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILX...LSX...SGF...EAX...
LAT...LON 38888996 37999218 38289444 38999350 39849064 38888996
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