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Heavy rains could cause life-threatening flooding and landslides on Mexico’s Pacific Coast, the US National Hurricane Center warned.

Hurricane Polo has sent heavy rain and strong waves across Mexico’s Pacific coast, while Tropical Storm Nolo is approaching Hawaii with the potential for catastrophic flooding.

Early on Thursday, the hurricane was swirling about 130 miles (209 kilometres) south-southwest of the Mexican city of Zihuatanejo. It was moving northwest at 7mph (11kph) and forecast to turn west-northwest later in the day, taking it further out to sea, before turning northwest on Saturday.

Polo was forecast to maintain Category 5 strength as it moves along Mexico’s coast over the next few days.

While the eye and the strongest winds were expected to remain at sea, the heavy rains could cause life-threatening flooding and landslides, warned the US National Hurricane Center in Miami.

A hurricane watch was issued for Hawaii county and disaster preparations are under way because Tropical Storm Nolo could hit the island on Friday or Saturday, warned the National Weather Service.

John Bravender, a weather service warning coordination meteorologist, said during a news conference on Wednesday afternoon that the tropical storm could develop into a major hurricane.

Hawaii County Mayor Kimo Alameda told residents in a video message that they should start preparing for the storm. He urged them to put together emergency kits with food, water and medications, as well as trim vegetation and clear drains.

“This is a very serious situation,” he said. “We do believe that the rain is going to come. It’s coming already.”

Governor Josh Green’s office said public schools and state and county offices across Hawaii’s Big Island will close on Thursday and Friday, while Maui County will shut them on Friday ahead of the threat of heavy rain, winds and flooding.

China’s Chengdu Aircraft Corporation continues to press ahead with the development of its ‘J-36’ next-generation tailless heavy tactical jet. Recent flight testing has offered interesting new views of the still-evolving stealthy design from the top and behind, prompting discussion about the aircraft’s features. There has also been talk recently about whether the jet might receive a laser directed-energy weapon at some point in the future.

The J-36 first broke cover, along with another next-generation tailless tactical jet design generally referred to as the J-XDS, back in December of 2024. There are understood to be at least four, and possibly five, J-36 prototypes flying now. A number of significant changes between prototypes have already been observed over the past two years, as you can read more about here.

The most recent video of a J-36 test flight, seen in the social media post below, began circulating online yesterday. The footage shows the aircraft coming in to land, providing good general views of the uniquely three-engined jet with its two-seat, side-by-side cockpit configuration, especially from the rear aspect. What is seen underscores a previously observed total revision of the exhausts from a trough style to a two-dimensional thrust-vectoring configuration akin to what is found on the U.S. F-22 Raptor. This and other significant changes to the design, including the addition of divertless supersonic intakes (DSIs) all around, not just on top, first emerged last year. The clip also offers a good reminder of just how wide the aircraft is overall.

As this particular J-36 passes by, it can be seen to have a lighter-colored radome, as well as at least one relatively large lighter-colored section on top of the dorsal air intake. A similarly colored radome was first spotted on what is said to be the fourth prototype back in July. This coloring could point to the installation of actual radar in the aircraft’s nose. In TWZ‘s first in-depth analysis of the J-36 back in 2024, we assessed that the jet’s very broad radome area could house an absolutely massive primary array.

The lighter section on top of the fuselage could be an aperture for a conformal antenna tied to a beyond-line-of-sight communications and data-sharing suite. In 2024, we posited that the heavyweight J-36 could serve as an intelligence-gathering and communications relay platform in addition to performing tasks more typically associated with tactical combat jets. Reliable and multi-faceted connectivity would be key for employing the J-36 as an airborne controller for advanced air combat drones, as well.

Another J-36 flight testing video that emerged on Monday, seen below, offers an additional view of the top of the jet, showing multiple lighter-colored sections that would appear to be additional conformal apertures for various antennas. There is a lighter-colored rectangular outline painted around part of the intake on top of the center of the fuselage, as well. The jet’s full paint scheme includes lighter-colored leading and trailing edges, which are critical structures on low-observable (stealthy) designs that often contain additional antenna arrays. Overall, the two-tone coloring is very much in line with what is seen on operational J-20 fighters in Chinese service today. The original J-36 prototype, at least, has notably worn a splinter-type camouflage paint scheme.

Whether or not the two recent video clips show the same J-36 prototype is unclear. The possibility has now been raised that Chengdu may be using a single serial number (36011) on at least some of the J-36 prototypes, a decision that could have been made for counter-intelligence and/or deliberate misinformation/disinformation purposes.

Much still remains unknown about the current or expected future capabilities of the J-36. Aviation Industry Corporation of China (AVIC) did have a placard at its booth at the 14th China International Defence Electronics Exhibition earlier this month that has prompted questions about whether the jet could be equipped with a laser directed-energy weapon. Chengdu falls under the umbrella of AVIC, which is a state-run enterprise. The Chinese-language placard in question describes a “laser weapon tracking system” with a power rating of “*00” kilowatts and a weight of “less than” 837.7 pounds (380 kilograms), per a machine translation. The way the power rating is written appears to mean that it is in the hundreds of kilowatts, which would put it firmly in a class capable of doing physical damage to objects, such as incoming missiles and drones.

Furthermore, an associated graphic shows a turreted system and a computer-generated rendering of a J-36 projecting a beam. The render appears to be from a video that depicts a J-36 using a laser to destroy other aircraft. Another computer-generated video that shows a J-36 using retractable lasers to shoot down incoming missiles has been circulating online since at least last year.

It is not immediately clear how official either of the clips depicting laser-armed J-36s might be, or whether they at all reflect real planned capabilities. The full placard presented at the China International Defence Electronics Exhibition, as seen in the video below, shows a variety of different laser systems, and not just for aerial applications.

The fielding of operational laser directed-energy weapons capable of inflicting any real physical damage has historically proven to be very challenging, and even more so within the size, power-generation, and cooling constraints presented by modern combat jets. As an example, the U.S. Air Force spent roughly a decade working on a podded laser weapon system that tactical jets could use to swat down incoming missiles under its Self-protect High Energy Laser Demonstrator (SHiELD) program. In 2024, the service confirmed SHiELD had “concluded” without achieving its goal of an actual flight test. That same year, the Air Force cancelled plans to test a laser weapon system on an AC-130 gunship.

Despite important U.S. strides more recently when it comes to fielding ground-based and naval laser weapon systems, “there’s nothing that’s on the shelf right now that we are ready to put onto an airplane,” U.S. Air Force Brig. Gen. Douglas Wickert, the commander of the Air Force Research Laboratory (AFRL), told TWZ and other outlets just last week at a roundtable at the Air & Space Forces Association’s (AFA) 2026 Air, Space & Cyber Conference on Tuesday. “The solid-state lasers and the power density and the different ways that you actually – there’s actually a lot of secret sauce in that. How do you make the beam, and how do you form the beam, and how do you pulse the beam, and all that’s in development.”

‘There’s development of the laser itself, but now the power and thermal management system has progressed so much that we can provide the power needed,” Dr. Michael Gregg, head of AFRL’s Air Warfare Directorate, said at the same roundtable. “We’ve also had new designs and engines that we know have the power … to direct that power in certain areas. So, from a system perspective, it’s much more feasible because everything has matured over the last decade.”

China has certainly made substantial investments of its own in laser and other directed-energy weapon capabilities across domains in recent years, and this is clearly an area of interest for the People’s Liberation Army (PLA), in general. When it comes to the J-36 specifically, TWZ has explicitly highlighted in the past how the three-engine configuration could be particularly useful for producing sufficient power to support a host of advanced and electricity-hungry sensors and other capabilities, including directed energy weapons.

Larger questions remain about the exact set of roles the J-36 is expected to fill, as well. The basic design is certainly optimized for straight-line performance, combat radius, and payload rather than maneuverability and agility. The jet has already caused a significant amount of debate just when it comes to taxonomy, as it does not seem to fit inside traditional definitions of ‘fighters’ and ‘bombers,’ something we have explored in detail previously.

“According to Yang Wei – chief designer of the J-20 –, the new [J-36] fighter can penetrate heavily defended airspace that the J-20 and comparable F-22s or F-35s must avoid, placing it a generation ahead,” Andreas Rupprecht, an analyst specializing in Chinese military aviation and TWZ contributor, wrote in a post on LinkedIn last week. “With lower RCS [radar cross section], high speed, and the capacity to control more drones, it could act as a node and command center for systems including J-20s and, especially, unmanned aircraft, while attacking high-value targets from stand-off range with long-range weapons.”

“The type could therefore represent a new class of ‘fighter,’” he added. “Online terms include ‘theater-level deep-penetration command combat aircraft’ and ‘high-performance fighter,’ analogous to a cruiser ranking above a destroyer within the Navy. Recent evidence gives this theory new weight and warrants continued monitoring.”

The J-36, as well as the J-XDS, reflect a larger burst of next-generation air combat developments in China in recent years. This includes an array of new crewed and uncrewed aircraft designed for operations from bases on land, as well as from the PLA Navy’s (PLAN) growing fleet of aircraft carriers and big-deck amphibious assault ships. The Chinese aviation industry’s development of a growing array of flying-wing uncrewed aircraft, some of which are very large, has been particularly notable.

In turn, there is something of an emerging gap between these developments and the pace at which the U.S. military is moving along similar lines, at least publicly. Boeing’s sixth-generation F-47 for the U.S. Air Force is not expected to take to the skies for the first time until 2028, though preceding demonstrator designs have been flying for years already. The U.S. Navy still has yet to officially announce a winner of its F/A-XX next-generation carrier-based fighter competition, and the current timeline for that program producing an operational aircraft is unclear.

As an aside, based on what has emerged publicly to date, there are signs that the F-47 may reflect a distinctly different design philosophy that puts greater emphasis on maneuverability compared to the J-36, and even likely the J-XDS. As mentioned, the J-36 certainly seems much more focused on payload, range, and level flight performance. In July, TWZ published a deep dive exploring why the U.S. Air Force would pursue a sixth-generation fighter with rear-swept wings, canards, and other features despite steady trends in the opposite direction visible in Chinese designs and ones elsewhere globally.

Regardless, U.S. officials have downplayed questions about China’s gaining ground in the air combat arena, or even surging into the lead in certain areas, in the past. “Chinese sixth-generation aircraft are in the nascent stages of development and expected to be operational by 2035,” the Pentagon wrote in its most recent annual report on military and security developments in China, which was published in December 2025.

In the meantime, the J-36’s design is already steadily being refined, and the total fleet of prototypes has been growing, offering new insights into the aircraft’s expected capabilities and roles.

Contact the author: joe@twz.com

Recurring floods disrupt daily life in Tunis, raising questions about drainage, transport and flood preparedness.

Tunis, Tunisia – Heavy rain brought parts of Tunisia’s capital to a standstill on Thursday, flooding roads and homes, trapping people in cars and disrupting electricity and internet services.

Home to nearly three million people, the Greater Tunis region has faced repeated flooding in recent years. Thursday’s flooding came only months after severe January rains caused widespread disruption across the capital and other parts of the country, leaving several people dead and causing significant damage.

Weather warnings had been issued in advance, but the decision to suspend classes in Tunis was announced only shortly before it took effect. Parents rushed to schools to collect their children as the rain intensified and traffic backed up across the capital.

Videos shared online showed flooded streets, cars stranded in rising water and what appeared to be power lines catching fire. Residents also reported power and internet cuts and water entering homes.

‘The road became almost unrecognisable’

Fatma, a 35-year-old employee in Tunis, said the situation deteriorated quickly as she struggled to get home safely.

“At about 4pm, the road became almost unrecognisable. The tunnel leading to Bab Saadoun was completely closed because of the rain,” she told Al Jazeera.

“Most people were stranded by the roadside for hours, waiting for public transport that never came. I saw three cars that filled with water and broke down, and people carrying their children on their shoulders.”

“Every season, the same thing happens. Roads close and traffic comes to a complete standstill. All the drains start overflowing with waste,” she said.

The National Institute of Meteorology had warned of locally heavy thunderstorms on Thursday, including heavy rain over short periods that could cause flooding, disrupt traffic and overwhelm drainage networks. It also warned of potential power cuts.

Residents question flood preparedness

“Tunisia has become used to these disasters. Every year, we end up flooded even when there is little rain,” said Intissar, 33, from the Lafayette area of Tunis.

She blamed local authorities for failing to carry out preventive work before the rainy season.

“This is work that should have been done during the summer,” she said.

But she also acknowledged the role of residents.

“We cannot deny the responsibility of citizens who dump waste that blocks drainage channels,” she said.

At a government meeting in August, officials called for drainage networks and waterways to be cleaned and flood-protection work to be accelerated. The government said 29 flood-protection projects were under way across the country.

The flooding comes as Tunisia prepares for a national march in Tunis on Saturday, with organisers calling for the release of four activists detained in connection with the Al-Soumoud Flotilla. The march is scheduled for 5pm, as rain is forecast to continue through Saturday.

A struggle to get home

Fatma said the lack of reliable public transport, combined with repeated flooding, was making it increasingly difficult for people to manage without cars.

“The problem makes people look for their own solutions. That is why most people are trying to find a way to buy a car, because it has become difficult to live without one with these recurring problems,” she said.

The flooding also came as students returned to schools and universities this week, adding pressure to roads and public transport.

For Fatma, the disruption is becoming a familiar pattern.

“This shows that the state has no vision. It is caught off-guard just like citizens are,” she said.

Aug. 30 (UPI) — NASA used SpaceX‘s Falcon Heavy rocket to launch the Nancy Grace Roman Space Telescope into space Sunday for a 1 million-mile journey to study some of the universe’s deepest secrets.

The rocket launched at 7:26 a.m. EDT from Launch Complex 39A at the Kennedy Space Center in Florida. The Falcon Heavy rocket separated 31 minutes into the flight and returned back to the launch site for later reuse.

There had been a 60% chance of favorable weather for the launch.

NASA Administrator Jared Isaacman called the launch of the telescope “exactly the kind of success story we want to see across NASA.”

“Delivered ahead of schedule and on budget, this mission reflects more than a decade of dedication from the NASA workforce and our industry partners. Now, Roman will give us a new atlas of the universe, push the boundaries of discovery, and demonstrate what is possible when America’s space program pairs bold ambition with disciplined execution.”

NASA said the telescope deployed its solar panels and lower instrument sun shade 1 hour and 23 minutes after launch. In the coming days, it will also deploy its high-gain antenna and a visor-like deployable aperture cover, perform two course corrections, and power on the Coronagraph Instrument.

In a few weeks, the telescope’s Wide Field Instrument — an infrared camera considered to be its primary instrument — will activate.

The Roman Space Telescope will travel 1 million miles in three months to reach its final orbit, a location called the second Sun-Earth Lagrange point. There, it’s expected to rapidly scan the sky and survey the universe about 1,000 times faster than the Hubble Space Telescope.

NASA said it expects to release its first images from the Roman Space Telescope in early 2027.