The El Nino storms drenching California won’t suffice to solve the state’s drought and won’t permanently save the Central Valley’s vulnerable salmon, federal scientists are cautioning.

In an apolitical assessment that comes amid a highly political time, National Oceanic and Atmospheric Administration experts stress that this year’s El Nino bounty is useful and limited. It might well be followed, moreover, by a swing back to a different kind of weather complication called La Nina.