Tropical Storm Moke is passing to the south of Hawaii's Big Island, close enough to dump a foot or more of rain on communities dealing with the aftermath of Hurricane Lala. The National Hurricane Center located the center of Moke about 320 miles south-southwest of Hilo, Hawaii, on Sunday. The storm has top sustained winds of about 40 mph, though the real impact is expected from rainfall in places where last weekend's hurricane flooded communities, caused mudslides and washed out roads.  Elsewhere, Tropical Storm Iselle formed Sunday in eastern Pacific waters well away from Mexico’s southwest coastline, posing no threat to land.

Fire and medical officials have issued warnings about a supplement offered to Western wildland firefighters who have been exposed to toxic chemicals. Glutathione was given to some firefighters during California wildfires last year and again this month in Washington. Some firefighters have said it helped them feel better after breathing toxic smoke. The International Association of Fire Fighters, a first responders' labor union, has issued a safety advisory saying consumers should be cautious about glutathione's safety and claims that it can treat or prevent diseases. The advisory notes the supplement is not FDA approved. At least two pharmacies recalled glutathione in August due to bacterial contamination.

A powerful cyclone has hit Latvia and Lithuania, leaving two people dead and more than half a million without electricity. The storm, which struck from Saturday into Sunday, brought rain and strong winds. Andris Viksna from the Latvian Environment, Geology and Meteorology Center says it seems to be the most severe storm in Latvia since 2005. One person died in central Latvia when a building collapsed, and another in Lithuania from a falling tree. The storm also affected Estonia and northeastern Poland, causing power outages and disrupting transport. Experts say climate change's role in the storm is still uncertain.

Athens is turning to hats as Europe’s heat intensifies. From straw sunhats and Panama hats to baseball caps and bucket hats, headwear is now on sale across central Athens and increasingly worn by tourists visiting the Acropolis. With temperatures typically at the mid-30s Celsius and growing crowds of visitors growing every summer hats are in heavy demand. Hatmakers say demand is also driving bolder styles, while Red Cross volunteers distribute water, sunscreen and caps to overheated visitors.

The National Hurricane Center says Tropical Storm Moke has formed in the Pacific Ocean. It is on track to bring another round of heavy rain and wind to Hawaii as residents are still recovering from Hurricane Lala. The hurricane center's advisory shows Moke was located about 425 miles southeast of Hilo as of Saturday morning. Maximum sustained winds were around 50 mph (85 kph). Like with Hurricane Lala, the Big Island is again expected to bear the brunt of the storm. It battered Hawaii last weekend without making landfall, downing trees and leaving roads covered in mud and rocks. Rain and heavy winds from Moke are expected to hit the Big Island late Saturday.

The wildfires burning across Europe this summer have exposed a potentially deadly threat lurking beneath the blackened landscape: rusty bombs and mines from World War I and II. The explosives now threaten crews fighting the fires. Some of the weapons have exploded in the intense heat. Blasts have been reported in France, Belgium, Germany and the Netherlands. Fires can ignite old munitions but can also burn away the scrub and brush that hides them. This wildfire season was supercharged by heavy rains in January, which spurred vegetation growth that became kindling when the summer heat arrived.

Tropical Storm Moke forms in the Pacific Ocean on track to bring more heavy rain to Hawaii's Big Island.

Fat Marmot Week is coming soon. Last winter was tough for the groundhog-like rodents living in the Colorado mountains. Researchers say there wasn't enough snow to keep marmots' burrows warm while they hibernated, causing many of the animals to freeze to death. The marmots that survived are doing well. They've fattened up, gaining the critical weight they need to make it through next winter. To drum up interest in their work, marmot researchers are launching an online contest for the public to vote for their favorite critter — Fat Marmot Week. It begins Monday.

Cleanup efforts and damage assessment are underway in Delaware's capital and on Long Island, New York, after tornadoes touched down. Storms battered the Northeast on Thursday with strong winds and heavy rains. Dozens of people were stranded in their cars during flash flooding in New York and New Jersey. Officials report no serious injuries. The National Weather Service said a trained spotter reported a tornado in Dover, Delaware, where several buildings were damaged. On Long Island, the weather service says it confirmed a tornado hit Atlantic Beach, where a beach club was heavily damaged.