SPC Sep 13, 2022 1730 UTC Day 2 Convective Outlook
[html]SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1212 PM CDT Tue Sep 13 2022
Valid 141200Z - 151200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Scattered to numerous thunderstorms are possible across the Florida
Peninsula as well as over the Great Basin and central Rockies
Wednesday. A few thunderstorms are also possible across the northern
Plains Wednesday afternoon into early Thursday morning.
Severe-thunderstorm potential is low.
...Western and central US...
Broad mid-level troughing across the western US is forecast to move
eastward as high pressure over the central Plains weakens and shifts
south. Ahead of the trough, lee cyclogenesis is expected over the
western Dakotas with broad southerly flow likely over the Plains. In
the wake of the previous cold front, deep surface moisture will be
slow to return. However, increasing mid-level tropical moisture
associated with the western us trough will support several areas of
scattered to numerous thunderstorms across the Great Basin and
central Rockies, onto the Plains.
Convective coverage is expected to remain the greatest farther west
where orographic lift and mid-level moisture will be best aligned.
Mid-level flow is expected to remain modest keeping vertical shear
low and storm organization potential low. Across the Plains, the
more limited moisture will support lesser storm coverage, with the
best chances expected near the surface low across the eastern
Dakotas. Here only a few storms are expected, with limited severe
potential from marginal buoyancy and shear.
...Florida...
South of a stalled cold front, a seasonably warm and moist airmass
will support scattered to numerous thunderstorms across the
Peninsula Wednesday afternoon. In the absence of stronger forcing
for ascent, primary lift for thunderstorms will be local and tied to
sea-breeze interactions. A few stronger multi-cell clusters may
emerge as convective outflow consolidates later in the afternoon.
However, the lack of vertical shear and stronger forcing should keep
any storm organization and severe potential short lived and minimal.
..Lyons/Jewell.. 09/13/2022
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Source: SPC Sep 13, 2022 1730 UTC Day 2 Convective Outlook (http://ht**://www.spc.noaa.gov/products/outlook/day2otlk_1730.html)