Image
Very shallow M6.6 earthquake hits Ogasawara region, Japan
A very shallow earthquake registered by the JMA as M6.6 hit Japanese Ogasawara Archipelago at 18:22 UTC (03:22 JST) on August 16, 2018. The USGS is reporting M6.4 at a depth of 11.5 km (7.1 miles) at 18:21 and M6.0 at 18:22 UTC. EMSC is reporting M6.4 and M5.9 at a depth of 10 km (6.2 miles). According to the USGS, the epicenter was located 251 km (156 miles) SE of Iwo Jima, 420.9 km (261.5 miles) SSW of Ogasawara, Japan and 945.4 km (587.5 miles) NNW of Saipan, Northen Mariana Islands. There are no people living within 100 km (62 miles). Although there may be slight sea-level changes in coastal regions, this earthquake has caused no damage to Japan, JMA said. The closest volcanoes are Minami-Hiyoshi and Nikko, both submarine. They have located roughly 100 km (62 miles) W of the epicenter. Periodic water discoloration and water-spouting have been reported over Minami-Hiyoshi since 1975 when detonations and an explosion were als…

Strengthening system to bring heavy rain, snow and strong winds to California

Strengthening system to bring heavy rain, snow and strong winds to California

A strengthening weather system currently located over the open waters of the east-central Pacific is on its way toward the southern and central California coast. It will bring heavy rain, gusty winds and mountain snow to the region through Tuesday, January 9, 2018. This may result in debris flows and mudslides due to recent wildfires, NWS warns.
This system is forecast to be accompanied by a vast plume of moisture emanating from the subtropical Pacific, NWS forecaster Brendon Rubin-Oster noted 08:00 UTC (03:00 EST) today.
Heavy rainfall should spread from north to south as the attendant cold front approaches the coast. Based on the latest forecast, a broad area of 50 - 100 mm (2 to 4 inches) of rain is expected from coastal northern California down toward the Los Angeles basin. Local orographics could easily augment these amounts where favorable upslope flow will increase rainfall rates. 
A major issue will be the burn scar areas after a very active fire season to conclude the year 2017. These regions, in particular, will be susceptible to mudslides, debris flows, or other hydrologic issues given the heavy rainfall expected.
Farther inland, the Pacific storm should be more wintry in nature as 305 - 457 mm (12 to 18 inches) of snow is likely over the southern/central Sierra Nevada ranges.
Featured image: Total accumulation model for 06:00 UTC, January 10, 2018. Credit: GFS, TropicalTidbits.com

Popular posts from this blog