Pacific padding stats, while the Atlantic should continue calm this week

In brief: The Eastern Pacific is off to the races with 2 storms and a third possible by the weekend. None are serious land threats. The Atlantic is quiet this week but may have a window for weak development next week. And Texas is going to see the rains move in this week too.

Barbara and Cosme will dance off in the Pacific before weakening. Another disturbance will trail them for later this week. (Tomer Burg)

Pacific is up and running

We’re up to named storm number three in the Eastern Pacific after Barbara and Cosme formed this weekend. Neither will be a real threat to land, though Barbara is producing some locally heavy rain on the Mexico coast, particularly in Guerrero. But Barbara could become a hurricane on the way out into the open Pacific. It may also absorb Cosme. Trailing these two is another disturbance to watch late this week. While this one should also generally follow Barbara and Cosme out to sea, it’s still worth watching for coastal Mexico between Jalisco and Oaxaca.

Atlantic stays dormant a bit longer

Meanwhile, the Atlantic will remain on the quiet side this week. No tropical development is expected before the weekend.

I do think we have our first legitimate sign of possible development showing up, however. Emphasis on possible. The window is next week. The GFS, of course, continues to show something. More reliable model guidance is more mixed. The ICON, European, and Euro AI modeling all show hints of something in the Bay of Campeche around next Wednesday or Thursday. Ensemble guidance is fairly muted. All this to say, that it seems whatever may have a chance to develop next week has a relatively low ceiling at this point (think invest or depression more than a named storm).

European model guidance midweek next week shows a potential weak disturbance in the Bay of Campeche. (Tropical Tidbits)

Bottom line: I would say that overall, there is a greater chance that nothing organizes than something does. And if something does, the main concern would be heavy rain and flooding, most likely in Mexico. I don’t want to diminish the flooding chances, but I also don’t want people to think a hurricane is forming in the Gulf next week, as that’s not a realistic outcome at this time. Plenty of time to consume model runs this week and see if anything changes.

Major pattern change in Texas

One other item to note is that after a pretty hot start to June (a top 10 hottest in Houston, San Antonio, and Austin), the rains return this week. In fact, some locally heavy rain is likely across interior Texas, a place that could certainly use some additional rainfall.

Very heavy rain is expected at times this week in parts of Hill Country, Central Texas, and North Texas. Showers and thunderstorms will also be in the forecast elsewhere. (Pivotal Weather)

The heaviest, most concentrated rains this week look to occur in the DFW and Waco areas, as well as in the northern half of Hill Country. Parts of the Permian south-central Texas, and the Houston area will also see periods of rain and thunderstorms. Wednesday and Thursday may see the heaviest rainfall. This should keep heat in check in Texas this week as well.

Tropical development chances are specifically in the Pacific, while dust and Canadian wildfire smoke are Eastern features

In brief: The Pacific looks to get a series of lower-end tropical systems, while the Atlantic remains dusty and quiet for the time being. We also examine Canadian wildfires today.

Pacific buzzing — with limits

It’s busy times in the Pacific over the next week, as there are three areas earmarked by the National Hurricane Center today for possible development.

A Pacific that has three opportunities for tropical development over the next several days. (NOAA NHC)

None of these systems appear to be a threat to the Mexico coast at this time. Nor do any of them look to get especially strong. The 20 percent area has a wee bit of support to perhaps get a little stronger, particularly via the ICON model. But I would classify that risk as “low to very low” at this time. The next two names in the Pacific are Barbara and Cosme.

Quiet Atlantic will continue

The Atlantic remains out of play for now. We continue to see GFS model runs showing Gulf activity, but more likely than not it’s just whiffing on what may end up in the Pacific later next week.

At present, just dusty.

So much dust. Yellow, orange, red indicate presence of dust across the Atlantic and Gulf. (University of Wisconsin)

There’s one batch of dust impacting Florida and much of the Gulf Coast this weekend. A second batch of dust is thick out in the eastern Atlantic. That will thin out some as it comes west, but it may reach the Caribbean next week and the Gulf late next week. Although we don’t usually look far out in the Atlantic for development in June (Beryl last year being a glaring exception), at the least, conditions look poor for any development over the next 7 to 10 days.

Maybe around the 18th through the 20th we’ll get to monitor something sloppy in the Caribbean or near the Yucatan or coast of Mexico. AI modeling hints that this could be the case, but it’s not showing anything notable or troublesome at this time.

Canadian blazes adding to the haze

In a very glaring example of what happens in one place directly impacts another, for the third straight summer, Canadian wildfire smoke is a feature not a bug.

Wildfire smoke will advance into the northern Plains and Upper Midwest this weekend, while pockets of smoke are spread out all over the eastern U.S., almost all of which is coming from Canadian Wildfires (Pivotal Weather)

Canada is a mess right now, with numerous wildfires burning in the Prairie provinces and portions of western Ontario and northeast British Columbia.

Hot spots showing where wildfires are currently ongoing in Canada (Natural Resources Canada)

Conditions in Canada are exacerbated by long-term drought, below normal snow, and long-term fires. Some of the fires in Canada are actually relics of fires started in 2023! They basically burn or smolder as “zombie” fires in the winter season and then flare up again as summer arrives. Canadian winters have had their harsh periods, as they normally do. But punches of cold in short bursts can’t make up for the overwhelming warmth we’ve seen at times in the winter months recently in Canada. The winters of 2023-24 and 2024-25 have averaged warmer than normal in western Canada.

The last two winters in Canada (and the U.S.) have been very mild. (NOAA)

Canadian wildfires themselves aren’t abnormal, and neither are warm winters. But the frequency and intensity of wildfire and warmer winters tends to be increasing as the climate changes. You have to be careful about saying that this is “the new normal,” but you can safely assume there will be more years and scenarios like this coming in the future.

Wildfire risk map in Canada today shows the highest level of risk in BC, the Prairie provinces, and western Ontario, and this is expected to continue. (Natural Resources Canada)

In the short-term, the risk for wildfire growth or new wildfire starts is high and expected to remain quite high over the next 7 to 10 days. And so it goes.

A quiet Atlantic persists but for how long? And more about the GFS scareicanes!

In brief: Today we explain why the Pacific should be more active than the Atlantic through the next 7 to 10 days and when that could theoretically change. We also talk more about the GFS model’s phantom storm bias.

We’ll keep this fairly brief today. The Atlantic is quiet, so I don’t want to go fishing for speculative information. Plenty of other sites do that. That said, we know people want to know how long the generally calm conditions will persist.

Pacific or Atlantic?

The atmosphere over the eastern Pacific and western Atlantic right now appears to be entering a phase that is indeed favorable for tropical development. If we look at what is called a “Hovmöller” plot, we can identify areas in the tropics that are favorable or unfavorable in terms of where rising air is located.

A Hovmöller diagram can indicate where rising air in the tropics is located. Currently and for the next 10 days, it will be over Central America or on either side. (ECMWF)

So over the next 10 days, we have an area of rising air, indicated by the blue/green colors above. This is actually showing what we call “divergence” in the upper atmosphere, which typically correlates to “convergence” in the lower atmosphere. For air to rise, you want converging winds. For tropical systems you want rising air. So that’s firmly in place near Central America for the next 10 days.

Here’s where the models have actually been somewhat useful. Recall, the GFS model has been going bonkers with a Gulf system almost every day this month and several days last month. But also notice how it’s never advancing in time. It’s always been on like days 10-15. More on that in a second. But if you look under the hood on the GFS and European models, you have also seen a decent signal for Pacific tropical activity.

Odds of tropical development in the Eastern Pacific are quite high over the next few days. (NOAA NHC)

When we look at European model guidance, we can clearly see this Eastern Pacific area that will move out into the Pacific. But we can also see perhaps 1 or 2 other areas by day 10 that may develop close to the Central American or Mexican coast.

The European ensemble shows a busy eastern Pacific but a mostly quiet Caribbean and Gulf. (Weathernerds.org)

Now, the focus is clearly on the Pacific here, but there are elements of interest on this model very close to the east coast of Mexico in the Bay of Campeche. In theory we could see something like that later next week, but the proximity to land would likely hinder its organization significantly.

So I think over the next 10 days, while that area of rising air is in place over Central America, the odds will heavily favor Pacific systems over Atlantic ones, though the odds of a Gulf or Caribbean system may begin to increase after the 12th or so. That said, there’s no reliable model guidance showing anything of real concern in the Atlantic over the next 10 to 12 days.

The GFS phantom menace

I’m not going to belabor the point about the GFS model, but no matter how often we say it, it still seems people get spooked by this model still showing storms in the Gulf. Again, that is virtually always incorrect. And by virtually always, I cannot recall a major June storm in the Gulf in the last 10 years but I can recall dozens of instances of GFS refrigerator material every single year. In fact, as some others have shown recently, this signal of phantom storms actually stands out in verification metrics.

All my X’s live in the Caribbean. (Florida State University)

On the image above, each X indicates a time where the GFS showed something developing last year and it never formed. The majority of the X’s on that map are in the Caribbean (and likely in the early and late season), exactly where the GFS has been showing all the hubbub so far this season. The real tell though is when the storm is perpetually stuck in the day 10 to 15 day purgatory and never advances forward in time. It’s a dead giveaway that this model is up to its old tricks again.

Some people may say the GFS model is useless then, but reality is more nuanced, of course. The model has made improvements in skill over the years, including handling some tropical systems after they’ve formed. But as a forecaster, it’s important to recognize the model bias when you see it, and that’s certainly what we’re seeing right now.

Wee chance of tropical development near the Southeast coast the next couple days

In brief: There is a very small chance that a weak tropical system could develop near the Florida or Georgia coasts over the next couple days. Any development would be on the lower end of the intensity scale, and the primary impact will be some heavy rainfall.

A very, very low chance of tropical development exists from a system off the Southeast coast the next couple days. (NOAA NHC)

Un-Sunshine State

A weak disturbance is crawling up and just offshore of Florida’s east coast. The odds of this thing actually developing as it comes north are pretty low. Currently the NHC holds the odds around 10 percent. No real model solutions suggest that this will formally organize. Perhaps there’s a slightly higher chance of development as it turns the corner past the Carolinas and heads out into the open Atlantic. Whatever the case, in terms of a formal tropical entity forming, the chances are very low.

That being said, there will be impacts from this system as it comes north, and it will primarily come in the form of rainfall. South Florida took on a good dose of rainfall yesterday.

Monday’s rainfall in Florida was on the order of 3 to 4 inches in Miami, with higher amounts in Big Cypress (NWS Miami)

A flood watch is in effect for Fort Lauderdale, Miami, the Everglades, and Naples today. While official rainfall forecasts are on the order of another 2 to 4 inches of rain, some model guidance does hint at maximum totals in isolated areas hitting upwards of 6 inches or even a bit more. That would be most likely to occur south of Alligator Alley, which is to say in a less populous part of South Florida. Additional rains are likely tomorrow.

2 to 4 inches of rain in South Florida, with locally higher amounts are likely the next day or two. Additional heavy rain will occur up the Peninsula as well. (Pivotal Weather)

The actual disturbance we’re tracking will be up near Jacksonville by tomorrow evening. As it comes northward, it will spread some locally heavy rain up the coast. You can see from the map above how anywhere from 1 to 3 inches of rain is plausible across central and northern Florida. Some sort of weak low will probably come ashore between Savannah and Charleston tomorrow night, bringing more locally heavy rain up the coast there as well. Since this is likely to just sort of track along the coast and move inland from there, the heaviest rains will remain offshore, but anywhere from 1 to 3 inches is possible along the coast from Jacksonville through Myrtle Beach.

About 1 to 3 inches will locally higher amounts will be possible along the coast from Jacksonville through Myrtle Beach. (Pivotal Weather)

From there, the disturbance will turn right and exit the Carolinas out to sea where it will make another attempt at low-end development.

Bottom line? Whether this is unnamed or gets tagged as something formal, the impacts will be the same with locally heavy rain and flash flooding possible on the coast of South Carolina, Georgia, and North Florida, as well as across South Florida.

Elsewhere

Meanwhile, the GFS model has Mariah Carey’s “Fantasy” on repeat. It continues to show a fantasy (read: phantom) storm in the 10-to-15-day portion of the model. It remains alone, as it often is this time of year. No other model support exists. So we will continue to disregard it as fantasy. Broadly, conditions become a tinge more favorable next week in the Caribbean or southern Gulf, but we don’t see any specific systems of note at this time.