Jitter can be higher than latency in many cases:

Latency is the AVERAGE round-trip time seen for packets to communicate.Jitter is the PEAK round-trip time for packets to communicate. Thus, if you have 100 packets that 99 of which took 30ms round-trip, but one packet took 60ms, it would average out to about 31ms of latency, but 60ms of jitter.