The developing and steady wet trade wind regime in the tropics is inspired in-part by what is likely to be the warmest SSTA pattern on record for the main development region (MDR) for North Atlantic hurricanes as defined by the tropical North Atlantic (TNA) index.

Until the waters off the East Coast warm significantly, the tendency for cool temperatures in the East U.S. with very limited number of warm-to-hot days will continue into mid-summer.

A combination of climate factors caused an upper-level high-pressure ridge in Canada to amplify attendant drying character from West Canada to the Great Plains during May.

The Climate Impact Company 2023 North Atlantic basin tropical cyclone season forecast is updated. The outlook maintains 7 hurricanes and 3 intense hurricanes while raising the number of tropical cyclones slightly from 12 to 13. However, a major increase in accumulated cyclone energy (ACE) index from 92 to 136 is indicated.