Severe Storm Outlook Narrative (AC)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
ACUS48 KWNS 240851
SPC AC 240849

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0349 AM CDT Sat Mar 24 2018

Valid 271200Z - 011200Z

Model consensus remains good through day 6 regarding the slow
eastward progression of a positive-tilt upper trough. By day 4
(Tuesday) storms will likely have evolved into an MCS from portions
of the Southern Plains into the middle MS Valley. Strongest storms
are expected across TX along and south of a cold front where influx
of richer low-level moisture will support greater instability.
Severe threat should spread east into the lower MS Valley region by
day 5 (Wednesday). Overall pattern with deep-layer winds parallel to
initiating boundaries seems to indicate a slow-moving squall line
with strong vertical shear supportive of embedded organized

For days 6 and 7, storms will continue east through the Gulf Coast
States in association with the slow-moving upper trough. While
vertical wind profiles will be adequate for embedded organized
severe storms, uncertainties regarding quality the thermodynamic
environment precludes a risk area beyond day 5 at this time.

..Dial.. 03/24/2018 is the U.S. government's official web portal to all federal, state and local government web resources and services.