SPC Mar 27, 2020 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook
Day 3 Outlook Image

Day 3 Convective Outlook NWS Storm Prediction Center Norman OK
0202 AM CDT Fri Mar 27 2020 Valid 291200Z - 301200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY...
Isolated to scattered thunderstorms are forecast from the lower
Great Lakes southward into the Appalachians and parts of the
Southeast. ...Synopsis...
A powerful mid-level low and associated negative-tilt trough will
move from the western Great Lakes into the lower Great Lakes and
Northeast by Monday morning. Farther west, a mid-level disturbance
will move from west of the northern CA coast southeastward into the
Desert Southwest during the period. In the low levels, an occluded
surface low will move from the western Great Lakes northeastward to
the Ontario/Quebec border. A trailing cold front will push east
across the upper OH Valley early in the day and a residual frontal
zone will likely remain draped across parts of the Northeast. ...Lower Great Lakes into the Appalachians...
A broken band of showers/thunderstorms is likely along a cold front
from parts of the lower Great Lakes southward into parts of eastern
TN and AL. The thunderstorm activity will likely weaken during the
day as low-level convergence lessens with southward extent. Uncertainty remains regarding destabilization during the 12-16z
period from parts of western NY into the central Appalachians. Model forecast soundings show weak elevated instability atop a
low-level stable layer, but strong deep shear will reside across
this entire region. Northward destabilization into parts of the
lower Great Lakes and northeast will likely be inhibited by a
residual frontal zone serving as a north delimiter. Given the
associated uncertainties with thunderstorm intensity Monday morning,
will preclude low-severe probabilities this outlook update. ..Smith.. 03/27/2020 

Read more

Be the first to comment on "SPC Mar 27, 2020 0730 UTC Day 3 Severe Thunderstorm Outlook"

Leave a comment

Your email address will not be published.


*