Colorado Mesoscale Discussion

Areas affected…Parts of northeastern Colorado

Concerning…Severe Thunderstorm Watch 638…

Valid 090039Z – 090200Z


The severe weather threat for Severe Thunderstorm Watch 638

SUMMARY…Strong to locally severe storms are ongoing the east of
the Colorado Front Range, and may continue to pose a risk for strong
surface gusts and marginally severe hail into the 7-8 PM MDT time

DISCUSSION…There has been some recent intensification of
thunderstorm activity near/east of the Denver metro area, aided by
lift along cold outflow generated by preceding storms across the
higher terrain to the west. Some of this activity has produced
strong surface gusts, including a 50 kt peak 3-second mean gust at
the Denver International Airport at 2343Z.

Convection is beginning to propagate away from the higher terrain
into a cooler and more stable environment across northeastern
Colorado, to the north of a stalled surface front, and it is unclear
how much longer it will be able to maintain intensity.
Even south of the front, roughly along the Interstate 70 corridor
across eastern Colorado, the boundary layer has been impacted
considerably by convective outflow.

..Kerr.. 09/09/2019

…Please see for graphic product…


LAT…LON 40070429 40450453 40470331 39360295 39080362 39300422
39700404 40070429

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