Another week of severe storms and heavy rain in the Central/East U.S. followed by an unusually cool ending to May as indicated by next week's U.S. population weight cooling degree day forecast utilizing all forecast models.
The latest JUN/JUL/AUG 2025 global SSTA forecast from the Australia Bureau of Meteorology reveals neutral ENSO with slight warming of the Nino SSTA regions, the beginnings of negative phase Indian Ocean dipole (-IOD), and a summertime North Atlantic basin which is warmer than normal although not nearly as warm as recent years.
The oceanic ENSO projection favors the possibility of El Nino late this year while the atmospheric ENSO forecast is neutral phase. Dynamic models favor neutral ENSO phase although tilted toward La Nina returning if any deviation. Analog and dynamic models are, at least a little, disagreeable.
April 2025 was (nationally) the 12th warmest April on record. The entire Gulf region, Southeast U.S., and most of the East Coast averaged MUCH ABOVE normal. North Carolina and Virginia observed their 2nd warmest months of April in the 131-year period of record. Only the North-central U.S. States were not warmer than normal each averaging near normal for mid-spring.