If my opponent activates Heavy Storm, I know I could active Magic Jammer and negate the Heavy Storm because it is chained, but can I activate other trap cards such as Waboku before it is destroyed by Heavy Storm?

In this case, no.

Magic Jammer is a Counter Trap, making it a Spell Speed 3 card.

The only cards that can now be chained to the activation of Magic Jammer is a Spell Speed 3 or higher card. Spell Speed 3 being the highest and ONLY Counter Traps right now.

So you could not activate Waboku since it is a Spell Speed 2 and you cannot chain Spell Speed's of lower speed than the one you wish to chain to.

I'm interpreting your question slightly different, so let's see if this answer helps too.

Yes, you can chain other cards, such as Waboku or Threatening Roar, to the activation of Heavy Storm, since they have no activation requirements and have the proper spell speed to do so.

However, if you've already activated Magic Jammer, then as HDI said, you cannot chain any other traps due to their spell speed.

You also can't do it the other way around...you can't activate what you want and then use Magic Jammer.

Magic Jammer, being a Counter Trap, must be chained directly to the card that you wish to use it in. In this case, Heavy Storm.

If you are to chain other cards in between the activation of Heavy Storm, like Waboku, then the last thing to activate in this case was a Normal Trap Card, making Magic Jammer illegal to activate since it is no longer able to directly chain link to Heavy Storm itself.

I'm sorry that I wasn't very clear with my question, but you've all managed to give me the answer I was looking for. Thanks!

i didnt wan to tstart another thread about this and i figured it was around the same type of question

senario:
turn player plays heavystorm
opponent plays magic drain
tunr player discards a magic card
can the opponent play another magic drain after that?
or will it be destroyed?

I'm hearing that you are allowed to activate spells that you set the same turn they are set(except for quickplays) is this true? please clarify.

First of all, you can't do what rogerscollect is asking. Magic Drain needs to chain directly to what it wants to negate otherwise it can't be activated.

Secondly, you can activate magic cards you set the turn you set them as long as they aren't quick-plays.

No, because...

A.) Magic Drain has to be chained directly to the Magic Card. In this case, you'd be trying to chain Magic Drain to another Magic Drain, which can't be done.

B.) The first Magic Drain is now resolving with the discard and then the Magic Card would resolve normally.

You cannot interrupt a current chain by adding in new links.