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'Super fog' causes deadly multi-car pileup on Louisiana highway: Police_我的网站

A |     昨日（4月18日）以来，我国多地出现降雨天气，南方地区强降雨主要集中在四川、贵州、广西、广东等地，其中四川绵阳、德阳、遂宁，贵州毕节、贵阳、安顺，广西桂林，广东揭阳等地局地出现了大暴雨；北方地区降雨主要集中在西北地区东部，量级以中到大雨为主，宁夏银川、吴忠等地局地出现暴雨。    A "super fog" in Louisiana has caused a multi-car pileup on Interstate 55 near New Orleans, Louisiana, after severely lowering visibility, according to police.The crash, involving dozens of cars, occurred on Monday morning due to heavy fog conditions, according to Louisiana State Police. A long stretch of Interstate 55, a 24-mile-long highway over Lake Pontchartrain near New Orleans, is expected to be closed "for the foreseeable future," police said.Interstate 10 and Interstate 310 were also closed as a result of the crash, police said. Louisiana Gov. John Bel Edwards confirmed the accident in a statement Monday that there were fatalities in the crash, but did not say how many people were killed or injured.For hours after the crash, emergency crews worked to clear debris from both northbound and southbound lanes, according to state police.The super fog was caused by smoke from marsh fires burning in the region combined with dense fog developing in the area early Monday morning bringing extremely low visibility. In some spots, visibility was near zero, creating dangerous driving conditions.Super fogs typically form when condensed water vapor mixes with the smoke and moisture released from damp organic material smoldering from a nearby fire, such as brush, leaves and trees, according to the National Weather Service. Visibility can be lowered to less than 10 feet as a result, according to the NWS.This has been occurring in the region over the past several mornings, with the location of the densest fog and most dangerous conditions varying day to day, forecasts show.Super fogs can be especially dangerous when they develop near and over highways. The localized nature of the weather phenomenon means that visibility conditions can worsen rapidly within a very short distance, which can lead to a hazardous combination of sudden low to near-zero visibility and vehicles traveling at a high speed on a highway.The very limited visibility then hinders a driver's ability to react to changing conditions on a roadway.The National Weather Service issued a dense fog advisory for much of southeastern Louisiana on Monday morning, including from Baton Rouge to New Orleans.Over the past several days, the National Weather Service has been warning of the threat of dense fog during the early mornings in the region that would be worsened in some areas by nearby marsh fires. State police advised drivers to use their low-beam headlights if they can't see at least 500 feet in front of them.The fog dissipated by mid Monday morning, and all fog alerts have since been canceled.While areas of smoke will continue to be possible in the area as various marsh fires continue to burn, fog is not forecast to be a major issue Monday night, as weather conditions will be less favorable for fog development.Morning fog is not uncommon this time of the year for the region, but more than 86% of the state is currently battling extreme drought conditions, which is elevating fire danger. This could mean more instances of super fog in the coming days and weeks as cooler temperatures settle in, but the drought and wildfire risk persist.In addition, devastating drought and wildfire conditions continue to impact Louisiana. More than 60% of the state is now categorized at exceptional drought, the highest category of concern, according to the U.S. Drought Monitor. Just three months ago, 0% of the state was listed under exceptional drought."The combination of wildfire smoke and dense fog is dangerous, and I want to encourage all Louisianans in affected areas to take extreme caution when traveling," Edwards said in a statement.State troopers are working to notify families and investigate the exact cause of the crash, according to state police.It is unclear how many fatalities and injuries occurred as a result of the crash. The St. John the Baptist Parish Sheriff's Office directed media requests to Louisiana State Police.Additional information was not immediately available. Louisiana State Police did not immediately reply to ABC News' request for comment.。近期江南、华南及贵州等地部分地区多降雨，未来三天，上述地区仍有强降雨和强对流天气，降雨落区重叠，部分地区累计雨量大，上述地区公众需高度警惕，防范强降雨和强对流天气不利影响，避免前往山区和地质灾害易发区。　　预计今天（4月19日），江苏中南部、安徽中南部、浙江西部、江西大部、福建西部、湖南东部和南部、广西北部、广东中北部等地部分地区有大到暴雨，江西中部、湖南东部、广东北部等地部分地区有大暴雨（100～180毫米），上述部分地区最大小时降雨量30～50毫米，局地达70毫米以上。贵州南部、湖南中南部、江西、广西中北部、广东北部等地将有8～10级雷暴大风或冰雹天气，湖南南部、江西中部、广西中北部等地的部分地区将有10级以上雷暴大风，局地风力可达11级以上。中央气象台今晨升级发布暴雨黄色预警，继续发布强对流天气黄色预警。　　20日，强降雨带有所南压，湖南东南部、江西中南部、福建西北部、广西中北部、广东中北部等地部分地区有暴雨或大暴雨（100～180毫米）。　　22日，浙江南部、江西中南部、福建北部和西部、广东中北部、广西东南部等地部分地区有暴雨或大暴雨（100～160毫米）。

B | 　　国内未来三天具体预报　　4月19日08时至20日08时，内蒙古中部、江淮中南部、湖北东部、江南大部、贵州南部、华南中北部等地部分地区有中到大雨，其中，江苏中部、安徽中部、湖南东部和南部、江西大部、广西北部和东部、广东北部等地部分地区有暴雨或大暴雨（100～180毫米）。

C | 新疆南疆盆地、陕西北部等地部分地区有5～7级风，阵风8～10级，东海北部海域将有7~8级、阵风9级的大风。　　4月20日08时至21日08时，浙江中部、江西中南部、福建西部、湖南南部、贵州东南部、广西大部、广东大部等地部分地区有中到大雨，其中，湖南南部、江西中南部、福建西北部、广西中北部、广东中北部等地部分地区有暴雨或大暴雨（100～180毫米）。

D | 新疆北疆北部部分地区有4～6级风（见图6），黄海东南部海域、东海北部海域将有7~8级、阵风9级的大风。　　4月21日08时至22日08时，江南大部、华南大部等地部分地区有中到大雨，其中，江西中南部、浙江南部、福建北部和西部、广西东南部、广东中北部等地部分地区有暴雨或大暴雨（100～160毫米）。内蒙古西部部分地区有5～6级风。（中国小康网综合中央气象台）。

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Published on:05:04:52