Bermuda gets brushed by Leslie; Newfoundland to get full landfall it appears

Leslie could remain a poweful storm or hurricane as it makes landfall in Newfoundland

Leslie could remain a poweful storm or hurricane as it makes landfall in Newfoundland

As expected, the effects of Leslie on Bermuda were not much more than a few power outages and some minor vegetative damage from the large circulation of the tropical storm. The weather will improve significantly by tomorrow as Leslie finally picks up some forward speed and moves out of the area.

However, now it’s time for Newfoundland to be ready and this could mean getting ready for quite an impact. The NHC mentions on their most recent update that Leslie could be transitioning from a tropical cyclone to an extratropical cyclone at about the time it makes landfall in Newfoundland. This means it is possible for hurricane conditions to be felt in the region as Leslie moves through. One key here is that the wind field will likely expand with this transition even though it looks as if Leslie already has an enormous wind field. Folks in Newfoundland will feel the effects from Leslie well before any center it has left arrives.

Elsewhere, 91L in the east Atlantic is taking its time to develop and when/if it does, I highly doubt it will get past 60 W longitude as this is the pattern we seem to be in right now. Obviously, we’ll watch it closely but I do not see any indication from the long range models that we’ll see any threats from the east Atlantic anytime soon.

I’ll have more here on Leslie and its expected effects for Newfoundland on tomorrow morning’s blog post. Be sure to check the HurricaneTrack app this evening for today’s video blog that was recently posted.

As Bermuda readies for Leslie, it looks like weak development possible in the northern Gulf of Mexico

Latest ECMWF Model Showing Leslie Very Close to Bermuda

Latest ECMWF Model Showing Leslie Very Close to Bermuda

Leslie is gradually getting better organized and will be a hurricane sooner rather than later. I think it is then only a question of how strong it will become as it moves very close to, or right over, Bermuda this weekend.

I am sure folks there are preparing which is prudent since the wind field extends out so far with the storm. This means that tropical storm conditions will arrive on the island well ahead of the center. While Leslie is forecast to pick up its forward speed, it will not be racing past Bermuda, prolonging the effects.

As was the case with Isaac, the key to Leslie’s future intensity will more than likely be related to how well it develops an inner core structure. Large tropical cyclones typically take longer to tighten up produce a well defined inner core with a ring of convection surrounding the eye. The sooner Leslie is able to accomplish this, the stronger it is likely to become as it passes Bermuda.

This will also have a significant impact on me since I am going to Bermuda tomorrow.

My plan is to take one of my large hardened cases full of weather equipment and other gear that I will set up somewhere on Bermuda to (hopefully) stream live data and video back to our servers and our app.

I will also be working with KittyCode, LLC who is the developer of the hugely popular Hurricane and Hurricane HD set of apps for iOS devices. Both of our sets of apps will contain as many video blog updates as I can put out. Of course, Hurricane and Hurricane HD offer excellent tracking maps and other tools to keep up with the latest on Leslie and other goings on in the tropics. Get Hurricane from the App Store here.

HurricaneTrack for iPhone Tower 1 Screen Shot from Isaac

HurricaneTrack for iPhone Tower 1 Screen Shot from Isaac

As I mentioned, one of my objectives is to set up a complete “wind tower” on the island to capture wind and pressure data every 60 seconds, along with a web cam image, and send this data to our app, HurricaneTrack. I will ONLY be taking one set of gear, that is all that is feasible considering that I am flying it all out there on a passenger jet. The data will feed in to Tower 1 in our app, as seen on the screen shot example from our Isaac field work last week. If all goes well, users of our app will be able to monitor nearly real time weather conditions, along with a web cam image, as Leslie moves through the area.

I will post more about my plans, where I hope to set up, etc. in an update later this afternoon.

Besides Leslie, we are tracking TS Michael but it is of no concern to land areas and will never be.

In the Gulf of Mexico, there is a complex of disturbed weather, perhaps some remnant energy from Isaac that has drifted back south, that could develop some in the coming days. Fortunately, the conditions in the area are not too favorable right now so any development will be limited. However, another round of squally weather is possible for portions of the north and central Gulf Coast region as the disturbance moves southward.

I’ll have much more here later today and will post the daily video blog to our app this afternoon as well. We recently had an update to the app, so if you own it, update it now! We have some GREAT improvements that will prove very helpful going forward.


Bermuda could be hit quite hard by Leslie- it all depends on how close and how strong

The Official Forecast Track Takes Leslie Close to Bermuda This Weekend

The Official Forecast Track Takes Leslie Close to Bermuda This Weekend

I know the headline is like a memo from the department of the obvious, but it’s true. While I think that Bermuda has no way out of being impacted by Leslie, I do not know to what extent the effects will be.

Right now, the first sign of Leslie’s approach will be the increase in swells from the Atlantic. These will only get bigger and more frequent. In fact, these swells will radiate out from Leslie to impact much of the U.S. East Coast and the islands that border the northern Caribbean Sea.

Then, it looks like Leslie could really intensify over the warmer-than-normal waters of the western Atlantic. How strong remains to be seen but the upper level environment looks quite favorable and Leslie might be the first category three hurricane of the season.

The question of how close depends on the strength of the ridge which will push Leslie west some before it straightens out to a more northerly course. The timing of the north turn will ultimately result in what happens for Bermuda and how close the center tracks.

Down the road a few more days, it looks a little better for Nova Scotia and in fact the entire Northeast U.S. as Leslie should turn east enough to clear those regions. This is not by any means a done deal and any significant deviation to the west, and Leslie could bring issues to New England and the Maritimes.

I am almost at the point where I am going to decide whether or not to travel to Bermuda to intercept Leslie. I would like to take one wind tower assembly, minus the tower itself of course, plus one remotely operated cam unit. I can easily airline the Storm Case with all the gear in it and purchase a marine battery once there to power everything. I am as interested in the wind and pressure data as I am the impacts on the people there. If all went well, I would have live weather data from exceptional equipment feeding in to our iPhone app and our Client Services site. I would also have a live cam streaming for our Clients as well with frequent updates to Twitter and Facebook posted. I will know tonight if I am in fact flying to Bermuda later this week.

I’ll have more here on Leslie after the 11pm ET NHC advisory package.

Warmer than normal water temps likely to fuel Leslie as rest of tropics stay very busy

Atlantic Sea Surface Temperature Anomalies

Atlantic Sea Surface Temperature Anomalies

Sea surface temps are running at least one degree Celsius above normal across much of the northwest Atlantic. In fact, there are large areas of plus two and three Celsius just off the Canadian Maritimes. This translates in to added heat content and Leslie is poised to take advantage of it over the next week or more.

The current NHC forecast track has Leslie moving very slowly over the next few days as steering currents remain weak. The track takes the center just to the west of Bermuda but since Leslie is a large storm with a huge wind field, the effects will be felt on the island in the way of large, battering waves, heavy rain and high winds. I suspect it won’t be too much longer until we see a hurricane watch posted for the island.

With all of this warmer than normal water around, Leslie looks like it could strengthen in to quite a strong hurricane in the models. Add to this what appears to be a very favorable upper level outflow pattern and it is possible that Leslie becomes the first category three hurricane of the season. We have been in this pattern of seeing storms/hurricanes intensify out of the deep tropics and I don’t see any reason to believe that Leslie will be any different.

In the longer range, the Euro continues its westward forecast for Leslie, taking it very close to Nova Scotia and Newfoundland. Any further west and we could be looking at a possible brush with portions of New England as well. Much of this will have to do with the way a trough is supposed to develop in the Tennessee Valley this weekend and beyond. If it is weaker or digs in farther west, even by a little, then the high pressure area over the western Atlantic can build in more and push Leslie a degree or two of longitude west. I will be watching closely to see if this trough acts to capture Leslie and swing it north-northwest or whether the trough acts to push Leslie out to the north-northeast. How this plays out will determine what, if any, landmass is directly impacted.

One effect that I have made mention of for several days now is the increasing swells that will roll in to the East Coast. The NHC continues to make mention of this in their discussions and I want to emphasize the importance of understanding how dangerous rough surf can be- even with a storm/hurricane hundreds of miles off the coast. Check out this video that I produced last year as part of a preparedness campaign with Olympus Insurance out of Florida:

Elsewhere, we now have tropical storm Michael which will be officially named at 11am ET on the NHC advisory. The small storm will be short-lived and not affect land but it will bring the total number of named storms to 13 this season. While Michael is much smaller than Leslie, it is clearly a tropical storm and is of interest to shipping lanes in the open Atlantic.

The east Pacific is calming down and I do not see any new areas of concern developing anytime soon.

I will be working on the daily video blog for our iPhone app and will have it uploaded in just a little while. We are also eagerly anticipating the first major update to the app any day now. The update will greatly enhance the app and allow for manual refresh of the video blogs. As soon as it is approved by Apple, I will add a separate blog post. Speaking of blogs, I’ll update this blog later this afternoon.


Latest Euro model to raise a few eyebrows along East Coast

Euro Forecast for Leslie Shows it Getting Closer to the East Coast of U.S.

Euro Forecast for Leslie Shows it Getting Closer to the East Coast of U.S.

It looks like the weak nature of Leslie has allowed it to track a little more west than originally forecast and this may be enough to trap it under a building ridge of high pressure over the western Atlantic in the coming days.

The latest ECMWF model shows quite a significant westward shift in the track of Leslie beyond day five. In fact, the model now shows a landfall in Nova Scotia at day nine, which is a change from the curving-out-to-sea scenario that has been the norm as of late for that model.

Both the GFS and the Euro also indicate that Leslie will grow to be a powerful hurricane with nearly ideal upper level conditions over water temps that are running several degrees above normal in some places. This will lead to a substantial wave event along the East Coast and of course, Bermuda, later this week and in to the weekend. This, in and of itself, could be a big problem with days and days of pounding surf. I’ll address this more on tomorrow’s blog post.

For now, Leslie is rather disorganized and moving generally northward. We’ll see what the NHC has to say on their next forecast package. I suspect we’ll start to see some subtle shifts to the west in the track and an increase in the intensity over time.

I’ll post more here late tonight and then again tomorrow morning. For a video discussion of the tropics, be sure to pick up our iPhone app in the App Store. We have a new update coming out any day now which will greatly improve functionality and I’ll post a separate write-up about that once Apple has approved it.