Intensity Forecast For TD 9
Continued high wind shear from Fiona’s upper-level outflow is expected to impede development of TD 9 through Saturday morning, and its close proximity to the coast of South America may also hinder it. Odds for development will rise by Saturday afternoon, when Fiona will be approaching Canada, allowing wind shear over TD 9 to drop to the moderate ra
Track Forecast For TD 9
The spread in model track solutions for TD 9 continues to be large, with impacts to Central America, Mexico’s Yucatan Peninsula, Jamaica, the Cayman Islands, Cuba, Florida, and the Bahamas all in play. As of Friday early afternoon, it appears that Central America is at relatively low risk of a direct hit, though heavy rains from the storm may affec
Hurricane Fiona to Thrash Atlantic Canada
One of the strongest storms in Canadian history is expected late Friday into Saturday, as category 4 Hurricane Fiona quickly transforms into a massive and powerful post-tropical cyclone just hours before landfall. Rare hurricane and tropical storm warningshave been issued by Environment Canada across a span of roughly 800 miles, from eastern New Br
Landfall and Impacts
As of 11 a.m. Friday, NHC was predicting Fiona will reach the coast of eastern Nova Scotia on Saturday morning as a post-tropical cyclone packing top sustained winds just east of its center of 100 mph. Much more concerning is the predicted west-to-east breadth of hurricane-force sustained winds of at least 74 mph (around 170 miles) and tropical-sto
Tropical Storm Gaston Nears The Azores in Central Atlantic
Tropical Storm Gaston was bringing gusty winds and heavy rains on Friday to the Azores Islands, where 2 – 6 inches of rain are expected from the storm. As of 2 p.m. EDT Friday, Gaston had top winds of 65 mph, and was headed southeast at 9 mph toward the central Azores. Given an array of less-than-ideal conditions, Gaston will probably weaken, as it
Unusual Tropical Depression Forms in Far Eastern Atlantic
A tropical wave that moved off the west coast of Africa on Friday became Tropical Depression Ten (TD 10) at 11 a.m. EDT Friday. The depression is expected to move on a somewhat unusual northerly track just off the African coast between the Cabo Verde Islands and Canary Islands. Tucked in an area with light wind shear of only around 10 knots into Fr
One Other Wave to Watch: 99L
A tropical wave in the central Atlantic, several hundred miles west-southwest of the Cabo Verde Islands, was designated Invest 99L by NHC. The wave is in a dry environment (mid-level relative humidity of 50%), but sea surface temperatures are warm and wind shear is moderate, which could allow some slow development. Satellite imagery showed that 99L