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Invest 94-L, a tropical disturbance in the Atlantic, has developed into Tropical Storm Tammy. The storm is expected to strengthen as it approaches the Lesser Antilles. This late-season storm has surprised forecasters, as hurricane season typically follows a traditional calendar. Tammy is the 20th named storm of the season and the second to form in the tropical Atlantic in October. Tropical storm watches have been issued for parts of the Lesser Antilles, and heavy rains are forecasted for the British and US Virgin Islands this weekend. The storm's path and intensity are still uncertain, and experts are closely monitoring its development.
Tropical Storm #Tammy Advisory 2A: Tammy Forecast to Strengthen as it Approaches the Lesser Antilles. https://t.co/tW4KeGe9uJ
Tropical Storm #Tammy Advisory 1A: Tammy Continues Quickly Westward. https://t.co/tW4KeGe9uJ
5pm AST -- Key Messages on Tropical Storm #Tammy, which has formed east of the Windward Islands. TS watches in effect for parts of the Lesser Antilles & heavy rains are forecast to spread into the British & US Virgin island this weekend. https://t.co/0kMcHDt3qE https://t.co/3fAHre77D6
We have Hurricane Norma, which is rapidly intensifying and could hit Cabo San Lucas, in the Pacific. In the Atlantic, newly-minted Tropical Storm Tammy, which may sideswipe Puerto Rico or hit the northern Lesser Antilles. https://t.co/WkHI9HhqCD
Tropical Storm #Tammy has formed. Cold fronts often steer these storms east of the US this time of year. That's exactly what we see unfolding in the storm track here. https://t.co/ET4m9NSqY6
Tropical Storm #Tammy Advisory 1: Tropical Storm Tammy Forms East of the Windward Islands. Tropical Storm Watches Issued For Portions of the Lesser Antilles. https://t.co/tW4KeGe9uJ
Tropical Storm #Tammy has formed in the central tropical Atlantic. For only the 4th time on record (since 1851), two named storms (#Sean was the other) have formed in the tropical Atlantic (south of 20°N, east of 60°W) in October. Other three years are 1878, 1887, 1995. https://t.co/ikIIcImqSh
We could have Tropical Storm #Tammy here soon as #94L continues to become more organized this afternoon. https://t.co/QJap3eQOLn
Low-pressure east of the Lesser Antilles looks to be getting its act together and is likely to become a depression over the next 1-2 days. IF it becomes a storm it would be the 20th of the season and would get the name #Tammy. Folks in the Leeward Islands of the northeast… https://t.co/2lTkBu1jJ7 https://t.co/uLbQuVinWv
Invest #94L is becoming better organized, with the wave cusp now rolling into what may be a closed circulation, if a bit elongated. 94L could become a tropical storm at any time, and @NHC_Atlantic may issue Tropical Storm Watches soon for the Leeward Islands, as a… https://t.co/nviX8cF5lp https://t.co/NaPostO4uZ
What is now Tropical Storm (and likely to become Hurricane) #Norma in the eastern Pacific could be a significant factor in the weather in the middle to latter part of next week across the central US. Models seem to already be latching onto a strong storm system - and it's early.
Tropical Storm #Norma has formed in the eastern Pacific, set to make landfall in the Baja as a hurricane over the weekend! We'll monitor the moisture from the storm for potential impacts to the southern U.S.! https://t.co/8KJTiTGpot
INVEST 94-L has an 80% chance of tropical development. The next named storm is Tammy. https://t.co/yaPznPs6XY
#94L continues to be a forecast enigma. Huge discrepancy between GFS and ECMWF suites on whether we have a TC near/east of the Lesser Antilles this weekend. The system has gotten a little better organized since yesterday, but it's not clear if that's reflected at the surface. https://t.co/RAbxiEPCxk
#94L still struggling to maintain convection at the moment. Between this and the forecast trend towards more SW shear east of the islands, I think the intensity of this may be capped. Surprised at the overall lack of organized convection right now - might be dry air getting in. https://t.co/qd8r2AXsoB
Favorable ridge trend for the islands on the 12z Euro, maybe allowing a window for #94L to miss to the NE if it continues. Still this is a 7-day forecast so a lot could change still. https://t.co/NrK74j6Ygu
While some of the overnight convection wanted, #94L is looking fairly organized this morning. Models continue to trend towards this developing into a TC in the coming days. Could be at least a close call for the Eastern Caribbean. Still lots to sort out with the forecast. https://t.co/12JMpW0pMF
Overnight trends were not great likely due to #94L getting significantly better organized. The 00z EPS agrees on the system becoming a robust storm east of the islands, with some signal for a strong hurricane in the area. Those in the Lesser Antilles should keep an eye on this. https://t.co/BneRELliyy
Did a "slide summary" of the current forecast situation with Invest #94L in the East Atlantic. Bottom line: still quite a few possibilities on the table, ranging from little development to a recurving hurricane to a threat to the Lesser/Greater Antilles. https://t.co/1Zlt7MJBSS
Tammy! Is that you? Chances of tropical development in the far eastern Atlantic continue to increase - a bit unusual for so late in the hurricane season. The developing system will continue to slowly move westward toward the Caribbean over the next 7 days. #SCwx @WMBFnews https://t.co/maAAq7zLKI
Here's the latest on the tropics. #Sean is set to weaken this weekend and we'll continue to monitor INVEST 94-L as it moves westerly. https://t.co/4yAwbPzRHj
It’s not an area of the Atlantic we’d normally look to for tropical trouble, but if 2023 has taught us anything, it’s that hurricane season isn’t exactly following its traditional calendar. My latest discussion on Invest 94L 👇 https://t.co/AaPbDXtMce https://t.co/IOxs3VCnnf
Still a ton of forecast uncertainty with #94L - the 00z guidance showed more westerly shear near the islands compared to yesterday's scary 12z runs. Still a lot of questions too about where (and even whether) it forms. Still, Caribbean islands should keep a close eye on it. https://t.co/0GSsxq09m8
GFS remains the lone major global model holding off on development of #94L - shows a drier pattern and more diffuse system compared to EC/CMC/ICON which are all similar in consolidating a TC. Will be good to come back to this in 3-5 days to see how this genesis forecast verifies. https://t.co/EbooI1Y5am
Huge uptick in EPS members wanting to make #94L a bonafide tropical cyclone over the next five days. We've seen some fakeouts in the MDR before on the EPS this season, so we'll have to keep an eye on this one. Interests in the Lesser Antilles should monitor 94L. https://t.co/6MBWXo80te
Definitely some favorable factors in #94L's environment next week. Solid mid-level moisture, although there is some dry air to the NW. The big thing that makes it concerning is the possibility of being between two upper troughs, leading to two outflow channels - rarely ends well. https://t.co/eGp0Pjcloi
Tropical Storm #Sean and INVEST 94-L are located in the Atlantic. INVEST 94-L may develop into the next named storm(Tammy). https://t.co/GzZgRf0BrU
#94L continues to move slowly west. Not in any hurry to move across the Atlantic this late in the season. Global models still suggest development to varying extent. Remains to be seen exactly how favorable the upper pattern is, and whether it makes it into the Caribbean. https://t.co/jrwlo7o5fj