07/19/2020, 11:58 am EDT

Tracking Peak of Summer Heat Waves

Does another heat wave follow the current episode for next weekend? ECMWF says yes and forecasts a stronger event than currently taking place. The GFS is not nearly as hot. The question is whether the hot air source region in the Central U.S. pulses eastward (or not). GFS says no while ECM is (vigorously) yes! The precedent is set as last week’s Midwest heat wave has shifted into the East now. A second event is likely and given peak summer heat the next event could be hotter.
07/15/2020, 8:24 am EDT

MJO Causes Record Slow Start to West Pacific TC Season

The Pacific tropical basin has observed no significant tropical cyclone activity since early June including no category-3 systems, the first time in the satellite measuring era (since 1966) according to the Australia Bureau of Meteorology. Using accumulated cyclone energy (ACE) index the seasonal activity (so far) for the Pacific basin is 20% of normal.
07/13/2020, 9:31 am EDT

The La Nina In 2020 Forecast Is In Jeopardy

The subsurface equatorial Pacific to the east of the Dateline is losing a moderate-strength cool signature which developed in May and signaled La Nina ahead. In recent weeks the cool anomaly has nearly disappeared. Subsurface support for La Nina evolution will need to rebuild.