Stay up to date with all weather conditions affecting transportation in the United States

Summary: A fairly quiet weather pattern is in place today across the U.S., with a slow moving front in the Northeast that may produce heavy rain, and a few storms with strong wind gusts and a couple of tornadoes may also impact the area. Meanwhile, Hurricane Sam has rapidly intensified to become the seventh hurricane of the 2021 Atlantic hurricane season early Friday morning. Despite Sam's rapid intensification, it's not yet clear if Sam will threaten land, but it will slow down; Sam's forward speed will slow this weekend, as high pressure to its north acting as its initial steering wheel weakens. Sam could at least generate high surf and rip currents along the East Coast more than a week from now even if it stays well offshore, as Hurricane Larry did earlier this month despite passing east of Bermuda. However, it's far too soon to completely rule out Sam as a potential U.S. threat. Areas recovering from Ida and Nicholas may still be experiencing delayed freight movement.

 

Summary: A strong cold front will gradually push through the Eastern U.S. over the next couple of days and will bring heavy rain and severe weather, primarily damaging winds . Excessive rainfall may result in flash flooding in the central Great Lakes and central Appalachians. Flash flood watches are currently in effect from the coastal Carolinas to the Great Lakes. Additionally, several disturbances are currently active in the tropical Atlantic, however none of them are expected to impact the continental US at this time. Due to a backlog of freight, delays are still being seen for shipments destined to areas impacted by Ida and Nicholas

 

Summary: A strong cold front will produce heavy rain will create mainly localized areas of flash flooding to the Great Lakes and Ohio Valley. There is another flash flood threat in the parts of the Southeast and Southern Appalachians. Additionally, several disturbances are currently active in the tropical Atlantic, however none of them are expected to impact the continental US at this time. Due to a backlog of freight, delays are still being seen for shipments destined to areas impacted by Ida and Nicholas

 

Summary: Heavy rain from the remnants of Nicholas will continue a threat for additional flooding and flash flooding across the Tennessee Valley Monday. A strong cold front will slowly shift across the central then eastern U.S. through this week bringing a threat for heavy rainfall and potential for flooding. Additionally, Tropical Storms Peter and Rose are tracking through the Atlantic right now and could be followed by the formation of another tropical depression later this week.

 

Summary: After making landfall overnight as a Category 1 Hurricane, the center of Nicholas is now located just southwest of Houston, and will bring tropical storm impacts while moving northeast along the Texas coastline, including storm surge, rainfall, and isolated tornadoes in the central Gulf Coast areas. The potential for major rainfall flooding will be the most widespread threat from Nicholas going forward, especially since this includes areas still recovering from Hurricane Ida in southeast Louisiana and southern Mississippi. Embargoes are still in place for much of the freight destined for coastal Louisiana including New Orleans and Baton Rouge. Advisories: Texas, Louisiana, Mississippi, Alabama, Florida

Summary: Tropical Storm Nicholas - located in the western Gulf of Mexico - will bring tropical storm force winds, life-threatening storm surge, isolated tornadoes, and significant heavy rain, impacting Texas and southwestern Louisiana coastal communities, including the Houston Metro area. Some bands of rain associated with Nicholas have already spread into the Texas and Louisiana coasts. Embargoes are still in place for much of the freight destined for coastal Louisiana including New Orleans and Baton Rouge. Advisories: Texas, Louisiana

Summary: Hurricane Larry will continue to generate large swells along the US east coast through Saturday, causing life-threatening surf and rip current conditions. Meanwhile, Hurricane Olaf, while not expected to impact the US, is causing heavy rain and hurricane-force winds across southern Baja California Sur today. Embargoes are still in place for much of the freight destined for coastal Louisiana including New Orleans and Baton Rouge.