- Isaias made landfall in North Carolina late Monday and is now tracking northward along the East Coast.
- Damaging winds are expected from near the mid-Atlantic coast to New England.
- Heavy rain could cause serious flooding in some areas
- Isolated tornadoes and storm surge flooding are also potential concerns.
- Isaias should move into eastern Canada by early Wednesday morning.
Tropical Storm Isaias (ees-ah-EE-ahs) will race northward near the East Coast through late Tuesday with damaging winds, flooding rainfall and tornadoes.
Isaias made landfall as a Category 1 hurricane at 11:10 p.m. EDT Monday near Ocean Isle Beach, North Carolina, with maximum sustained winds of 85 mph.
Current Conditions
Tropical storm warnings are in effect from the mid-Atlantic to coastal Maine, including Washington, D.C., Philadelphia, New York City and Boston.
The latest warnings and watches are depicted in the map below.
(MORE: Hurricane Season Terms You Need to Know)
Watches and Warnings
(A watch is issued when tropical storm or hurricane conditions are possible within 48 hours. A warning is issued when those conditions are expected within 36 hours.)Isaias is centered near the border between North Carolina and Virginia right now.
Rainfall has spread as far north as New York and New England. A tornado watch is in effect until 12 p.m. EDT from a portion of eastern Virginia to eastern Maryland, Delaware and far southern New Jersey.
Current Radar, Watches and Warnings
Strong winds are ongoing from eastern North Carolina into eastern Virginia. Current winds for select locations can be seen in the map below.
Manteo, North Carolina, has clocked a wind gust to 68 mph and Norfolk, Virginia, has seen winds gust over 50 mph.
More than 400,000 homes and businesses had lost power in North Carolina and Virginia as of early Tuesday morning, according to poweroutage.us.
Current Winds
Forecast
Isaias will quickly move through the Northeast today and should be in eastern Canada by early tomorrow morning.
Current Information and Projected Path
(The red-shaded area denotes the potential path of the center of the system. It's important to note that impacts (particularly heavy rain, high surf, coastal flooding, winds) with any tropical cyclone usually spread beyond its forecast path.)Wind
Tropical storm conditions (winds 39 to 73 mph) will spread up the immediate East Coast throughout the day in areas under tropical storm warnings.
(Times given show when winds of at least 40 mph are expected for a given community with higher chances of seeing these winds are shown in red and purple. )
There will be power outages and tree damage in locations that experience stronger wind gusts along the East Coast. This includes areas from eastern North Carolina to the coastal mid-Atlantic, New York City, Long Island and parts of New England.
Wind gusts could top 40 to 60 mph in some areas for a brief time as Isaias passes through.
Northeast Wind Gust Forecast and Timing
Flooding
NOAA's Weather Prediction Center has issued a high risk of excessive rainfall from the Washington, D.C. and Baltimore metro areas to a part of eastern Pennsylvania. Life-threatening flash flooding and urban flooding is expected in these areas.
Flash flooding is also possible as far north as eastern New York and northern New England.
The threat of flooding has prompted the National Weather Service to issue flood watches from North Carolina to parts of New England. These watches include Washington D.C., Baltimore, Philadelphia and the New York City Tri-State area.
Flood Alerts
(From the National Weather Service.)Isaias has the potential to produce the following rainfall totals as it moves northward, according to the National Hurricane Center.
-Central and eastern North Carolina into the Mid-Atlantic: 3 to 6 inches, isolated maximum totals 8 inches.
-Eastern New York into Vermont: 2 to 4 inches, isolated maximum totals 6 inches.
-Western Connecticut, western Massachusetts, New Hampshire and western Maine: 1 to 3 inches.
Tornadoes
Isaias could also spawn short-lived tornadoes along its path up the East Coast.
The potential for isolated tornadoes is the highest today from eastern Maryland northward into New England, as depicted in the darker red shading below.
Severe Weather Forecast
(Shaded on the map above is the likelihood of severe thunderstorms, according to NOAA's Storm Prediction Center. Note that not all categories apply for the severe weather risk on a particular day.)Storm Surge
Significant storm surge flooding has already occurred along the coasts of South Carolina and North Carolina.
Storm surge flooding was reported Monday night in Myrtle Beach, South Carolina. Water levels were just over 4.5 feet above normal tide level at Springmaid Pier, which is the third-highest level observed on record.
The storm surge sent the Cape Fear River at Wilmington, North Carolina, to a record high water level early Tuesday morning.
A storm surge of 1 to 3 feet above ground level is possible farther to the north along the path of Isaias, from the Virginia Tidewater and the Chesapeake Bay to southern New England. Minor to moderate coastal flooding is forecast in many of these areas.
Storm Surge Forecast
(Data from the National Hurricane Center)Swells generated by Isaias will ride up the East Coast ahead of Isaias, leading to high surf and the danger of rip currents. The high surf may only slowly fall after Isaias passes.
Storm History
Isaias is the earliest named ninth Atlantic tropical cyclone on record. The previous record was Irene on Aug. 7, 2005.
Typically the ninth named tropical system occurs in the Atlantic basin in early October, meaning this year's pace is over two months ahead of average.
(MORE: The 2020 Atlantic Hurricane Season Is on a Record Pace)
The system developed from a large, vigorous tropical wave which emerged off the west coast of Africa around July 23-24.
On July 28, the National Hurricane Center designated the system "Potential Tropical Cyclone Nine", a procedure allowing the issuance of tropical storm warnings for parts of the Lesser Antilles, Puerto Rico and the Virgin Islands before the system had actually become a tropical depression or storm.
Isaias finally became a tropical storm late on July 29, when it was centered about 150 miles south of Ponce, Puerto Rico.
Track History of Isaias
(The white segment of the track history corresponds to when the National Hurricane Center considered the system a "potential tropical cyclone" from July 28 to July 29. )Heavy rain triggered serious flash flooding in several areas of Puerto Rico. San Juan picked up 6.04 inches of rain from July 29-30. Parts of eastern Puerto Rico picked up over 10 inches of rain in 48 hour estimates from the National Weather Service.
Multiple fallen trees, mudslides and flooding were reported in southwest Puerto Rico, according to local emergency management. River flooding was recorded by USGS gauges in several locations in Puerto Rico.
(NEWS: Deadly Isaias Has Left Widespread Damage Across Dominican Republic, Puerto Rico)
Parts of the Dominican Republic picked up to 13 inches of rain from Isaias, according to the country's national meteorological office.
Isaias' center hopscotched across Hispaniola, then became a hurricane before brushing through the Inagua Islands.
Isaias then arrived in the Bahamas. Winds gusted to 56 mph at Nassau International Airport, and power was shut off to some parts of the island as a precaution on August 1.
(MORE: Isaias Impacts in the Bahamas)
The center of Isaias moved over northern Andros Island in the Northwest Bahamas, on August 1, where a gust to 69 mph was measured by a U.S. Navy site.
As it was doing so, wind shear temporarily blew thunderstorms away from Isaias, exposing the low-mid level core of Isaias in a stunning satellite loop.
Winds gusted to 62 mph Sunday morning in Freeport, Grand Bahama, hard hit 11 months ago from Hurricane Dorian.
What appeared to be at least a couple of feet of storm surge flooding was documented by Freeport resident Lean Burrows Sunday morning.
Isaias brushed the coast of Florida and Georgia with rain and gusty winds Sunday into early Monday.
Isaias strengthened into a hurricane on Monday evening just hours before it made landfall near Ocean Isle Beach, North Carolina, at 11:10 p.m. EDT.
A wind gust to 99 mph was clocked at an elevated weather station at Federal Point, North Carolina. Wilmington, North Carolina, saw wind gusts up to 74 mph.
Hurricane Isaias Landfall
Significant storm surge flooding occurred in Oak Island, North Carolina, which is located just east of where Isaias made landfall.
The Weather Company’s primary journalistic mission is to report on breaking weather news, the environment and the importance of science to our lives. This story does not necessarily represent the position of our parent company, IBM.
"news" - Google News
August 04, 2020 at 05:15PM
https://ift.tt/2XnnxPN
Tropical Storm Isaias Spreading Threats of Damaging Winds, Flooding Rain and Tornadoes to Mid-Atlantic and Northeast - The Weather Channel
"news" - Google News
https://ift.tt/2DACPId
https://ift.tt/2Wh3f9n
Bagikan Berita Ini
0 Response to "Tropical Storm Isaias Spreading Threats of Damaging Winds, Flooding Rain and Tornadoes to Mid-Atlantic and Northeast - The Weather Channel"
Post a Comment