STATUS: IOP commencing Sunday morning, 13 March.

The IOP for Saturday has been scrubbed.  Instead, the IOP will commence Sunday morning.  It is anticipated that a compact upper system will pass the study area after sunset on Sunday, with a slight threat of tornadoes.  CAPE may be insufficient, but shear should be adequate.

On Sunday, we will make a decision on whether to have another IOP on Tue/Wed, which will mean that some traveling researchers will likely stay in Huntsville for the duration of these two events.  The mid-week system is a cold front, likely with sufficient CAPE and shear for a tornado threat.  However, at this time the degree of forcing to initiate storms is uncertain.