Weather Updates

Weather Update 9.15.20 - U.S.

Posted by Jarrett on Sep 15, 2020 8:39:43 AM

Hurricane Sally is moving near the coast of southeastern Louisiana and hurricane conditions are expected early Tuesday. Sally is expected to be a dangerous hurricane when it moves onshore along the north-central Gulf coast. Multiple impacts are expected with this system: extremely dangerous and life-threatening storm surge, hurricane-force winds, torrential rain with flash flooding and possible tornadoes. Sally will likely make landfall on Tuesday or Tuesday night with sustained winds of at least 110mph making it a strong and dangerous Category 2 storm. States with Active Advisories: Louisiana, Mississippi, Alabama, Florida

Sally is centered 105 miles south-southeast of Biloxi, Mississippi. Maximum sustained winds are currently at 85 mph, making Sally a Category 1 hurricane. Hurricane-force winds extend outward up to 45 miles and tropical-storm-force winds extend outward up to 125 miles from the center of the storm. Sally is expected to turn more northward later Tuesday into Wednesday, with the track shifting more eastward and landfall is now most likely to occur sometime on Wednesday from Mississippi to Alabama and the western Florida Panhandle.
Storm Surge Warning - Louisiana, Mississippi, Alabama, Florida
A storm surge warning is in effect from the mouth of the Mississippi River in Louisiana to the Okaloosa/Walton County Line in Florida, including Mobile Bay. This means there will be a danger of life-threatening inundation from storm surge within the warning area in the next 36 hours.
  • 6 to 9 feet from Ocean Springs, Mississippi, to Dauphin Island, Alabama, including Mobile Bay.
  • 4 to 7 feet from Dauphin Island, Alabama, to the Florida border and from the mouth of the Mississippi River in Louisiana to Ocean Springs, Mississippi, including Lake Borgne.
The peak storm surge will be near and to the right of where the center of Sally makes landfall. Large waves could worsen the storm surge impacts in some areas and cause significant beach erosion on much of the northern Gulf Coast.
Flooding Rainfall - Mississippi, Alabama, Florida
Rainfall totals of up to 30 inches could result in historic flooding near and just inland from the northern Gulf Coast.
  • 10 to 20 inches with locally up to 30 inches on the Gulf Coast from the western Florida Panhandle to southern Alabama and far southeastern Mississippi through Wednesday. Serious flash flooding and moderate to major river flooding could occur in these areas.
  • 4 to 8 inches, with locally up to 12 inches, is possible farther inland across southeastern Mississippi, southern and central Alabama, northern Georgia and the western Carolinas. Significant flash and urban flooding is likely, as well as widespread minor to moderate flooding on some rivers in these areas.
Hurricane Warning - Mississippi, Alabama, Florida
Hurricane conditions are expected today within the hurricane warning area along the Mississippi and Alabama coastlines and the western Florida Panhandle. Tropical storm conditions are already ocurring in some of these areas.
  • East of the mouth of the Pearl River, Mississippi, to Navarre, Florida, including Biloxi, Mobile and Pensacola.
  • Hurricane conditions (winds 74 mph or greater) are expected in some parts of this area late Tuesday into Wednesday.
Tropical Storm Warning - Louisiana, Florida 
Tropical storm warnings are in effect to west and east of this hurricane warning, including portions of southeast Louisiana and the Florida Panhandle.
Tornado Watch - Alabama, Florida 
A tornado watch is in effect for coastal Alabama and the western and central Florida Panhandle until 6 p.m. CDT.
Sally is one of five named storms currently being tracked, tying a 1971 record for the most tropical cyclones at one time. 

Topics: weather

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