Hi Jennie!
You're planning a two-week visit to Walt Disney World! I am sooooooo jealous! ;)
Disney's Water Parks are SUCH great fun!
Although the current rehab and refurbishment schedule does not yet reflect dates as far ahead as February 2013, we can take a bit of a guess for now based on the previous few years' refurbishment schedules.
Typically, both Water Parks close down for a period of 2-3 months each for routine maintenance and refurbishment at the end of the busy, summer and peak seasons. In both 2010 & 2011, Typhoon Lagoon closed first, from approximately November 1 until early-mid January. Upon it's rehab being finished and the park re-opening, Blizzard Beach then closed for its routine maintenance from January until mid-end March.
Official dates for these seasonal closures will definitely become available as fall approaches, however it would be a reasonable guess to assume that you will
most likely be able to pay a visit to Typhoon Lagoon during your visit next winter!
I welcome you to visit again any time Jennie, and if I have the confirmed information by that time I will be most pleased to share it with you! Thanks for visiting the Moms Panel with your great question.
Wishing you a simply Magical time as you plan for your Walt Disney World vacation!
Kirsten