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Mesoscale Discussion 1412
NWS Storm Prediction Center Norman OK
0145 PM CDT Thu Aug 06 2020
Areas affected...southeastern Wyoming and much of Colorado
Concerning...Severe potential...Watch unlikely
Valid 061845Z - 062045Z
Probability of Watch Issuance...20 percent
SUMMARY...Isolated to scattered convection is deepening within an
environment supportive of a few severe wind gusts and hail. A WW
issuance is not anticipated at this time, although convective trends
are being monitored.
DISCUSSION...Despite mid/upper ridging across much of the discussion
area, surface insolation has removed inhibition sufficiently to
allow for isolated to scattered convective development particularly
near/south of the Denver Metro area. These storms are in a
steep-lapse-rate environment (8-9 deg C/km low to mid-tropospheric
lapse rates), with just enough low-level moisture to support weak to
moderate buoyancy along the immediate Front Range. Westerly flow
aloft of 20-25 knots will support eastward movement/propagation of
convection into lower elevations, where slightly stronger buoyancy
(due to higher low-level moisture) exists. Any storms that can grow
upscale into clusters or linear segments will have a greater chance
of interacting with the stronger buoyancy resulting in a somewhat
greater severe threat, although ridging aloft may keep storms
isolated enough to preclude a concentrated threat prompting a WW
issuance.
..Cook/Kerr.. 08/06/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GLD...PUB...BOU...CYS...RIW...GJT...
LAT...LON 42050702 42630647 42770547 42300440 40620253 39680208
38230231 37280344 37100435 37350502 38010545 39200589
40010648 42050702
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