What's limiting tropical development in the Atlantic?

AccuWeather

AccuWeather's Geoff Cornish takes a look at the latest status of Tropical Storm Kiko in the Pacific and the strangely quiet situation in the Atlantic.

Transcript

00:00It's to the north of the islands. We're doing just fine here.

00:03And that low-level swirl, you can almost see it there.

00:06It's on the south side of the convection.

00:07See that little pinwheel? Kind of that grayish-blue pinwheel.

00:10That's the low-level clouds. Very shallow cumulus clouds.

00:14The residual circulation. It's still circulation, but if this weakens anymore, and it will,

00:18we're going to lose tropical storm status here with, again, Kiko on the way out.

00:22Center of the storm staying north of the islands.

00:24The convection's on the north side of the circulation in the first place.

00:26So this is a tropical storm on its last legs passing to the north of Hawaii.

00:31There are 10 to 15-foot wave heights, though, on the northeast-facing sides of the islands

00:35and certainly some strong rip currents, so just be aware of that.

00:39Now, we're going to take you to the Atlantic.

00:41And just to show you that you don't need a named storm to have tropical moisture lead to trouble,

00:45just compiled a list of some of the top rain reports in the past three-and-a-half days.

00:50Port Orange, Florida, 8.53 inches of rain.

00:52Osceola, East Lake, 8.1 inches.

00:55Boca Raton, one area with 7.62 inches.

00:57The National Weather Service office in Miami posted 7.12 inches in their rain gauge.

01:02So that's been from an unnamed storm.

01:05But this tropical moisture is going to continue to just linger along a front stall

01:10to cross the southeast coast of Florida and off the southeast coast of the U.S.

01:14And that could be a zone where we see some development occur over the weekend or into next week.

01:20Low chance of that, though.

01:21Also a low chance of development off the west side of Africa.

01:24The tropical rainstorm we tracked last week has been producing some extra moisture

01:28into parts of Puerto Rico and the Hispaniola, but a lot of this is just the daily convection.

01:33There's really not much left to that tropical wave, that tropical rainstorm,

01:37because it just got gobbled up by so much dry air off to the east.

01:41The footprint of rainfall, you can see a lot of this is just kind of the daily convection over the mountains,

01:47thunderstorms popping, so there's no cohesive area of rain moving across open water.

01:52So no strong tropical waves.

01:53Some showers and storms here with this disturbance crossing Puerto Rico and the islands here,

01:58but that'll be about it.

01:59And nothing too unusual out there for this time of the year.

02:02This is unusual for this time of the year.

02:04Dry air, this resembles more of an early July weather pattern over the western Atlantic.

02:08So this is going to be the ninth year with no named storms on September 10th since 1950.

02:15Very impressive that we're going to stay storm-free again on September 10th.

02:20The area to monitor later this month will be homegrown storms.

02:24The Caribbean, the southern Gulf, we've got to keep an eye out there,

02:26but still dry air and some shear getting us out of trouble elsewhere.

02:30For expert insights and superior accuracy, download the free AccuWeather app

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