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Topic: SPC Jun 20, 2022 Day 4-8 Severe Weather Outlook (Read 37 times) previous topic - next topic

SPC Jun 20, 2022 Day 4-8 Severe Weather Outlook

SPC Jun 20, 2022 Day 4-8 Severe Weather Outlook

[html]Day 4-8 Outlook
     
Day 4-8 Outlook Image

Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0339 AM CDT Mon Jun 20 2022

Valid 231200Z - 281200Z

...DISCUSSION...
Medium-range guidance is in good agreement that upper ridging will
remain anchored in place across the southern third of the CONUS
through the weekend. A strong shortwave trough is expected to move
across southern Canada and the international border vicinity from
D4/Thursday through D7/Sunday. Some dampening of the upper ridge is
possible as this shortwave impinges on the its northeastern
periphery on D7/Sunday and D8/Monday.

Most recent guidance suggests that a seasonally strong cold front
(associated with the southern Canada shortwave) will push
southward/southeastward into the central Plains and Upper Midwest on
D5/Friday, and into the southern Plains and Mid MS Valley on
D6/Saturday. A warm and deeply mixed boundary layer will precede
this front, likely limiting buoyancy, and the stronger mid-level
flow and vertical shear will be displaced north. These factors
should keep the overall severe thunderstorm coverage isolated.


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Source: SPC Jun 20, 2022 Day 4-8 Severe Weather Outlook (http://ht**://www.spc.noaa.gov/products/exper/day4-8/)