Here's is something that I wanted to add because it is a situation which often occurred. I did not know how to reflect it before, but here's a suggestion (which will be added as a note on Z1-b and a reference on MP-6, Fighter Cover to Z1-b)):
Close Escort with Forward Support: With Forward Support you may roll on TZ-1, Weather Conditions when you are two Zones away from the Target. If the weather is unfavorable to you you may elect to abort the mission or go the Secondary Target (see A.8.12.0). If the weather is Very Bad, the Forward Support Commander will order you to bomb the Secondary Target or abort if no other target has been assigned. Do not roll on TZ-1 again in the Target Zone.
AND... not sure about this, but may also add:
You will be without Forward Support until you reach the Target Zone.