Latest News
10/16/2025, 9:08 am EDT
The NOAA/CPC meteorological winter 2025-26 forecast is cold and snowy across the northern states from Washington to Michigan while the Ohio Valley turns stormy likely favoring snow. The southern tier of the U.S. is dry and warm.
10/15/2025, 7:04 am EDT
The early season snow cover across the northern hemisphere is ahead of schedule in Mongolia, far Northeast China, and Southern Russia. Alaska and Canada have below normal snow cover for mid-October although a recent streak of snow was observed across parts of the Canadian Prairies. As usual, early season expansive snow cover encouraged a much colder than normal air mass to evolve across Northeast Eurasia featuring 5-day temperature anomalies of 20-30F below normal.
10/13/2025, 4:47 pm EDT
ECM projects the Greenland Block to continue and finally produce cool troughs into the Ohio Valley/Mid-Atlantic States and Northwest Eurasia late this month into early November. Expect a cooler U.S. pattern especially in the East, as November approaches.
10/09/2025, 5:26 am EDT
So far, the Caribbean Sea has not observed a tropical cyclone in 2025 while only 1 tropical cyclone formed in the Gulf of Mexico. The last time each basin was inactive to this extreme were during strong El Nino years (1997, no activity in The Caribbean and 2015, 1 tropical cyclone in the Gulf of Mexico). Part of the explanation is the mid-troposphere anomalous dry air strongly identified in the Caribbean Sea since June.
10/08/2025, 5:59 am EDT
The convection phase of the Madden Julian oscillation (MJO) is alive shifting eastward across the East Pacific tropics to tropical Africa and eventually western tropical Indian Ocean during the next 2 weeks. Intensity is marginal although ECM indicates weak-to-moderate intensity. Usually, an MJO shift through phase_1/phase_2 increases risk of hot and dry weather in Australia and a wetter regime for South America.
Climate Impact Company Chart of the Day
The Warm Oceans, Causal to Warm Medium-range Forecasts
Day-to-day, medium/extended-range forecasts in North America are usually warmer than normal. A leading catalyst to that regime is much warmer than normal global ocean surface, most apparent in the middle latitudes beneath the prevailing upper-level westerlies that drive out climate. Maine heatwaves have increased dramatically in the middle latitudes particularly in recent years.
Climate Impact Company Climate Diagnostics
October 2025 Marine Heatwave Outlook
The latest marine heatwave report identifies many large episodes in the northern hemisphere, common during early autumn in the current decadal pattern. Strongest marine heatwaves are off the East Asia Coast, Central Pacific, and off the Northwest Eurasia Coast. The "warm blob" in the Northeast Pacific during late summer has rapidly weakened during the past several weeks. Southern hemisphere marine heatwaves will strengthen as summertime arrives.