Looking at latest global SSTA data and quite a few things pop to mind:
1) Are we headed back to a -PDO regime already? If so, the latest positive phase may be one of the shortest since the late 1950's.
1a) Still with the PDO, the configuration of the Pacific combined with the bursts of MJO activity this winter, and QBO makes you wonder if we will see a strong La Nina develop moving through the next 12-18 months.
1b) Tying into ENSO and La Nina potential, but will have to watch the WHWP over the course of the summer and how it migrates across the Pacific relative to climo...if migration is not as far east as it should be this could vastly increase the likelihood of La Nina and also influence tropical forcing.
2) AMO still positive...I remember back like 10 years ago my guess was we would see the AMO perhaps start the descent towards negative territory around the start of this decade...but historically we may still have another 15+ years of +AMO to deal with (actually look like the positive phase dominates for as much as 40 years with negative phase closer to 30)
3) I wonder how quickly SST's recover/warm in the Gulf of Mexico but they're relatively cool now (thanks to all those strong fronts). Not really connecting this for tropical season, but severe season. There is research which shows some correlation to SSTA's in the GoM and spring severe...and it makes sense that there would be. for example, in the historic season of 2011 SSTA's in the GoM were quite positive due to the lack of FROPA's into the GoM