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Mesoscale Discussion 1120
NWS Storm Prediction Center Norman OK
0348 PM CDT Mon Jul 06 2020
Areas affected...Portions of Upper Michigan
Concerning...Severe potential...Watch unlikely
Valid 062048Z - 062215Z
Probability of Watch Issuance...20 percent
SUMMARY...A couple damaging gusts and perhaps a severe hailstone may
occur with a few of the stronger storm cores.
DISCUSSION...An uptick in convective intensity has recently been
noted along the leading edge of a cold pool induced by earlier
storms across western parts of Upper Michigan. The peninsula has
experienced appreciable diurnal heating over the past few hours,
with temperatures rising into the 80s F based on latest METAR
observations, with up to 1500 J/kg MLCAPE noted per latest
Mesoanalysis. Nonetheless, kinematic fields are relatively weak,
suggesting that most convection should be pulse-cellular in nature.
Damaging gusts associated with water-loaded downdrafts appear to be
the main threat with the most intense cores, and a severe hailstone
cannot be completely ruled out. The greatest likelihood for any
severe (albeit brief and localized) would likely be with storms that
experience enhanced lift by the surging cold pool leading edge.
..Squitieri/Guyer.. 07/06/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...APX...MQT...GRB...
LAT...LON 45438781 46258749 46758686 46728512 46378376 46058379
45868471 45608618 45238720 45438781
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