08/31/2021, 7:05 am EDT

Tropical Disturbance 90L The Next Potential Important Hurricane

Tropical Disturbance 90L appears to be the strongest tropical wave to move off the West Africa Coast so far this season. Consequently, tropical cyclone models develop 90L with a west to west-northwest 5-day track with intensification to hurricane strength. A category-3 major hurricane is possible in 5 days. This system is a concern for the U.S. East Coast given the potential influence on the steering currents of a west-travelling hurricane in the North Atlantic subtropics.
08/30/2021, 4:58 am EDT

Heavy Rainfall Episode As Ida Turns Through The East U.S. This Week

Although Ida is weakening moving north and later northeastward an immense rain storm will emerge along the path of this storm this week due to lingering tropical characteristics into tomorrow and merging with a frontal system mid-to-late week. Widespread flash flooding will continue!
08/23/2021, 12:21 pm EDT

Nino34 SSTA Zooms Past La Nina Threshold!

Last week the Nino34 SSTA zoomed past the La Nina threshold (-0.5C) to -0.9C. The subsurface has also significantly cooled. If this trend continues, La Nina onset would be announced by early October.
08/22/2021, 8:46 am EDT

Henri Downgraded To A Tropical Storm

Henri weakened to a tropical storm this morning moving across cooler waters north of the Gulf Stream. Henri was a bit of an under-achiever while over warm waters south and east of the Gulf Stream yesterday. Therefore the weather and storm surge into Long Island and New England still produces hazards but less so than indicated yesterday.