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Mesoscale Discussion 0514
NWS Storm Prediction Center Norman OK
1110 PM CDT Sat May 02 2020
Areas affected...East central Illinois into central Indiana
Concerning...Severe potential...Watch unlikely
Valid 030410Z - 030545Z
Probability of Watch Issuance...5 percent
SUMMARY...Small cluster of storms is progressing east-southeastward
with damaging wind and occasional severe hail potential. Convection
is likely near peak intensity, and a gradual weakening trend is
expected over the next few hours. A WW issuance is not currently
expected.
DISCUSSION...A small convective cluster has recently begun
exhibiting a bow-like structure, with outbound velocities
approaching 40 knots (at 0.5 degrees radar-beam elevation), with up
to 60 dBZ noted at the -20C layer, suggesting that severe wind gusts
and hail may be occurring with this complex. While some severe
threat is expected to continue in the near term, this cluster is
bisecting the corridor of weakening buoyancy (500 J/kg MUCAPE),
suggesting that this storm cluster may be at peak intensity. Over
time, a weakening trend may be noted over the next few hours. As
such, a WW issuance is not currently anticipated.
..Squitieri.. 05/03/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILN...LMK...IND...ILX...LSX...
LAT...LON 39378919 39828882 39918743 39428498 39158510 38858568
38748638 38708690 38808763 39238918 39378919
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