MANILA (Reuters) - The Philippines raised the alert level at its Mayon volcano on Monday after a loud explosion in the wake of increased activity made a hazardous eruption likelier, prompting authorities to close all schools and urge residents to stay indoors.

AHMCT researchers have developed, deployed, and currently maintain several self-contained vision based sensor systems which autonomously monitor hazardous highway locations. These devices provide web-based access to both live video and recordings of past incidents trigged by configurable events. These sensors were originally developed to collect highway crash attenuator impact data and have been on-line monitoring vehicle traffic incidents for over a year and half.

Shipping orders go by on a conveyor belt at Amazon's San Bernardino Fulfillment Center on Oct. 29, 2013 in San Bernardino, California. The FAA proposed a 78,000 fine Wednesday for a delivery May 24, 2014, that Amazon offered Federal Express. A one-gallon plastic jug of corrosive Rid O' Rust Stain Prevent Acid Well Water Formula leaked through its cardboard box on the way from Plainfield, Ill., to Davenport, Fla., according to FAA. The FAA proposed a 52,000 fine Wednesday for a delivery June 2, 2014, that Amazon offered UPS. The 19-ounce container of Simple Air EZ Green HVAC Cleaner, which contained a flammable gas, was discovered by UPS workers on the way from Whitestown, Ind., to Glendale, Calif.

Doug Shoop, manager of the Department of Energy Hanford Richland Operations Office, says the sludge is "some of the most hazardous material at Hanford, so moving it away from the river to safe storage in a robust engineered facility in the center of the site significantly reduces risk."

The weather service says rip currents are powerful channels of water that flow quickly from shore. They occur most often at low spots or breaks in sandbars. Structural currents form along piers where longshore currents and wave action flow into the structure. Both rip and structural currents can sweep people into deeper water.