09/12/2023, 3:47 pm EDT

Omega Block + Marine Heatwave = Libya Flooding

Once again, large marine heatwaves are causal to a catastrophic climate event, this time extreme rainfall in Libya. A large marine heat wave formed off the Northwest Coast earlier this year and recently expanded into the Mediterranean Sea. The upper air pattern associated with the MHW featured an amplified summertime ridge over Europe compensated for by a downstream trough across the east-central Mediterranean Sea. The most recent version of this pattern featured an omega blocking high-pressure centered on Germany.
09/12/2023, 11:52 am EDT

Summer 2023 Was 15th Hottest on Record Although Population Weight CDD Were Diminished

Meteorological summer 2023 was the 15th hottest on record and included the hottest summer in recorded in history for Louisiana. However, because the hot summer did not strike the Northeast Corridor, the U.S. population weight cooling degree days were greatly diminished. In fact, the last 3 summer seasons were hotter then summer 2023.
09/12/2023, 11:44 am EDT

North Atlantic Basin Tropical Cyclone Season More Active Than Normal at Midpoint

The midpoint of the 2023 North Atlantic basin tropical cyclone season has passed after 15 tropical storms (8.5 is normal), 5 hurricanes (3.5 is normal), and 3 major hurricanes (1.5 is normal). The ACE index is 86.4 (62.4 is normal). On average, the seasonal tropical cyclone seasonal forecasts for 2023 were up to 21 tropical storms, 11 hurricanes, and 5 major hurricanes. Given the pace we're on, the upper limit of seasonal forecast is certainly possible.
09/11/2023, 1:47 pm EDT

The AUG-23 and JUN/JUL/AUG 2023 U.S. State Climate Rankings

The meteorological summer 2023 season was the 15th hottest on record for the U.S. Louisiana observed their hottest summer on record. Texas and Florida observed their 2nd hottest summer on record. New Mexico and Mississippi observed a top-6 hottest summer season. The Ohio and Tennessee Valley(s) managed a slightly cooler than normal summer of 2023.