Skip to player
Skip to main content
Skip to footer
Search
Connect
Watch fullscreen
Like
Comments
Bookmark
Share
Add to Playlist
Report
WeatherWhys: Homegrown tropical development
AccuWeather
Follow
yesterday
AccuWeather's Bernie Rayno explains the key factors into developing homegrown tropical systems, which typically occur in the southwestern Atlantic, the northwestern Caribbean and the Gulf of America.
Category
🗞
News
Transcript
Display full video transcript
00:00
All right, it's time for our WeatherWise segment where we take something complicated
00:06
in the field of meteorology and make it easy to understand. We're talking about homegrown
00:11
development in the tropics. Tropical development occurring close to the United States. This
00:17
usually includes the Southwest Atlantic, the Gulf of America, and also the Northwest Caribbean.
00:23
Now, that happens when you get an interaction between the jet stream and the tropics. That's
00:28
what we're seeing here where we go into this weekend. You see that dip in the jet stream
00:33
here? What that does is it starts to process for showers and thunderstorms here. And when
00:39
you look at where you see development during the month of July, where do you see it? In
00:45
those three basins, Gulf of America and also Northwest Caribbean, and then off the southeast
00:51
coast of the United States. By the way, this area in here across the eastern part of the
00:56
Caribbean. This is late in the month of July. The early part of the month has the development
01:02
close to the United States. So homegrown development. How does it occur? Dips in the jet stream coming
01:09
on south. We're seeing that this weekend. And what happens is as that occurs, you bring
01:15
fronts and upper lows into these warm waters. What does that do? It allows showers and thunderstorms
01:21
to develop. Now, those showers and thunderstorms must sit over these open waters for at least
01:27
48 hours and able to develop. So that area of low pressure forms and then slowly but surely
01:34
it turns into a tropical system. You don't typically get development, though, farther out into the
01:40
Atlantic because of all of the wind shears. So again, homegrown development. You see it during
01:46
the months of June and July. And now you know.
Recommended
1:35
|
Up next
How baseball fields stay protected from severe weather
AccuWeather
yesterday
1:15
Northeast braces for more late-week storms
AccuWeather
yesterday
0:51
What's the difference between a scud cloud and a tornado?
AccuWeather
yesterday
1:54
Tracking the Gulf and the Caribbean for potential storms
AccuWeather
6/20/2025
5:06
US, Caribbean on alert for growing tropical system
AccuWeather
9/6/2023
2:10
Monitoring potential tropical development in the Atlantic
AccuWeather
8/29/2024
1:44
Risk for landfalling tropical storm from the Atlantic remains low in the US
AccuWeather
9/9/2022
1:58
Tracking the tropics
AccuWeather
6/11/2025
5:33
Major hurricane threat for the U.S. Gulf Coast
AccuWeather
9/24/2024
3:32
Concerns for tropical development brewing in the Gulf
AccuWeather
6/17/2024
2:22
What you can expect from Hurricane Danielle and the next possible tropical storm
AccuWeather
9/3/2022
2:17
The two areas forecasters are watching for possible late-October tropical development
AccuWeather
10/28/2022
3:42
Southeast on alert for potential offshore tropical threat
AccuWeather
5/13/2020
3:28
Concern growing over tropical potential in the Caribbean
AccuWeather
11/9/2023
3:01
What you can expect from the newest tropical depression in the Atlantic
AccuWeather
9/15/2022
1:45
Possible tropical development near the Southeast for late October
AccuWeather
10/19/2022
4:25
Developing system expected to form into Tropical Storm Sara
AccuWeather
11/14/2024
1:42
Tropical development expected in the days ahead
AccuWeather
9/3/2024
1:18
How the coming cooldown in the Northeast could affect tropical development next week
AccuWeather
10/5/2023
0:42
Tropical rainstorm brewing in the eastern Pacific
AccuWeather
5/28/2025
4:25
Homegrown tropical activity developing near the Carolinas
AccuWeather
9/12/2024
4:11
Developing storm gaining strength in the Caribbean
AccuWeather
11/13/2024
1:19
The end-of-October tropical forecast from Puerto Rico to Bermuda
AccuWeather
10/29/2022
3:40
Developing tropical wave eyes the Caribbean and US
AccuWeather
7/31/2024
2:33
Looking ahead: Tropical threat in Southeast; Showers across West
AccuWeather
9/12/2024