Latest News
01/26/2026, 3:54 pm EST
The MJO was the catalyst to the aerial coverage and intensity of the January 24-25 weekend storm. The event also caused the East Pacific equatorial region to warm. Effective this week, oceanic La Nina has ended as all Nino SSTA regions have shifted to neutral phase.
01/25/2026, 6:17 am EST
The latest snowfall forecast indicates 18-24 inches of snow from Albany to Boston today and Monday. 10-18 inches of snow extends from Ohio across Pennsylvania. Amounts are cut back Maryland and southward due to sleet and freezing rain. The core of major ice accretion stretches from Eastern Louisiana to Kentucky, the Southern Appalachians, and Raleigh to Richmond.
01/24/2026, 10:02 am EST
Winter Storm Warnings have reached the Atlantic Coast and extend westward across Texas and the Southern Great Plains. Ice Storm Warnings remain in effect from East Texas to Tennessee and Northern Georgia across the western half of South Carolina and Southwestern North Carolina.
01/23/2026, 4:43 pm EST
By late Friday afternoon, Winter Storm Warnings expanded south to the Houston area and eastward to the Atlantic Seaboard. Initial focus zones for severe icing are East Texas, the northern 2/3 of Louisiana, southern Arkansas, and northern Mississippi plus northern Georgia and the western half of South Carolina.
01/22/2026, 9:56 am EST
The new concern is a larger exposure of significant ice accretion, especially northward through the Mid-Atlantic region to the south and southeast coast of New England. Already, widespread power loss and impossible travel due to a major ice accretion is forecast for the Mid-south U.S. plus the Carolinas. However, the ice accretion forecast trend leaves Virgina in a similar risk and Washington/Baltimore/Philadelphia could be added.
Climate Impact Company Chart of the Day
Active East Pacific MJO + -AO/-NAO = Atlantic Coast Weekend Snowstorm
The convection phase of the Madden Julian oscillation (MJO) remains active in the East Pacific as identified by tropical convection near the equator and a streak of energy associated with the subtropical jet stream pointed at Baja California. Given presence of negative arctic oscillation (-AO) and negative North Atlantic oscillation (-NAO) coupled with the active MJO, the emerging coastal storm indicated by the 12Z GFS and 12Z ECM have excellent support.
Climate Impact Company Climate Diagnostics
Historic -AO, Strengthening -NAO, Cold Pattern Expands in February for U.S.
The projected AO for February is about -2.6 which is historically negative. Similarity was observed in 1985, 1998, 2010, and 2011 when the following February maintained the cold U.S. trough. The modern day -AO analog (2010 and 2021) was slightly less effectively cold. The analogs suggest the East U.S. cold expands westward with time during February.