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Topic: SPC Sep 9, 2022 0100 UTC Day 1 Convective Outlook (Read 56 times) previous topic - next topic

SPC Sep 9, 2022 0100 UTC Day 1 Convective Outlook

SPC Sep 9, 2022 0100 UTC Day 1 Convective Outlook

[html]SPC 0100Z Day 1 Outlook
     
Day 1 Outlook Image

Day 1 Convective Outlook 
NWS Storm Prediction Center Norman OK
0739 PM CDT Thu Sep 08 2022

Valid 090100Z - 091200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE UPPER MISSISSIPPI VALLEY TONIGHT...

...SUMMARY...
A few strong to marginally severe storms may occur tonight over
parts of the upper Mississippi Valley.

...Upper MS Valley tonight...
An unstable but capped air mass currently exists from eastern NE and
SD across MN, with steep lapse rates aloft. The 00Z sounding from
MPX is quite capped, but the INL sounding shows much cooler
profiles, and stronger shear. As the positive-tilt upper trough
continues eastward across the northern Plains, winds aloft and
therefore shear will increase substantially in the vicinity of the
cold front, over central MN after 03Z. Given the cooling boundary
layer, storms are expected to be primarily elevated, with hail
possible. A few strong gusts may also occur as downdrafts interact
with a relatively dry sub-cloud RH layer.

..Jewell.. 09/09/2022


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Source: SPC Sep 9, 2022 0100 UTC Day 1 Convective Outlook (http://ht**://www.spc.noaa.gov/products/outlook/day1otlk_0100.html)