Still top analog is Mid April 1998 by the NAM 12z today,Disco from Nahshville
LONG TERM...
(Monday Night through next Sunday)
Issued at 1106 AM CDT Sun Mar 31 2024
The main concern in the extended forecast continues to be on
Tuesday with the expectation of some severe storms. A wave of
energy within a larger positively-tilted, broad trough will eject
out of the SW CONUS on Monday with a surface low developing in
response. The surface low will move from the Ozarks into the
Midwest and deepen as Tuesday progresses. Storms could be ongoing
early Tuesday morning to our north and west. A couple of the CAMS
including the HRRR have some activity leaking into our northwest
around dawn. There could be enough instability in place where a
severe storm cannot be ruled out. The main show continues to
appear to be in the afternoon ahead of the cold front. Models
continue to show surface CAPE values between 500 to close to 900
J/kg during the afternoon. Models are suggesting storms will
develop ahead of the front over the western third of the CWA and
move eastward as the afternoon and evening progresses. 0-500mb
bulk shear will be ample to support organized updrafts with values
greater than 60 kts. 0-1 km SRH values could be between 200-250
m2/s2 over the eastern half of the area Tuesday afternoon. Storm
modes may be a mix bag of clusters, supercells, or line segments.
Given all of that damaging winds, large hail, and tornadoes all
look possible. The severe storm window should end between 00z and
03z Wednesday.