Parts of Florida -- Jupiter Inlet to Ponte Vedra Beach and North Miami Beach -- could see water levels reaching up to 4 feet above ground. "Fire and rescue workers cut the branches of a tree that fell under heavy rain caused by Isaias in Santo Domingo, Dominican Republic, on Thursday.In the Bahamas, authorities announced that shelters have been set up across the Bahamas, with at least 10 shelters with supplies ready in New Providence.
Get the latest weather news and forecasts from CNN's meteorologists, watch extreme weather videos, learn about climate change and follow major hurricanes with CNN's storm tracker. This year's hurricane season has already had a number of records but another is set to be broken in the coming days. Patterns of hot and cold air are critical in hurricane formation and prediction. The Northern Hemisphere has more population and significantly more flights than the Southern Hemisphere. The Bahamas Defense Force and personnel from the health ministry have also been activated.
The Covid-19 outbreak has significantly reduced the amount of data we get from two of those tools -- aircraft and cruises. Some forecast models show the storm slowing down and coming very close to the Florida coast Saturday and Sunday before getting near the Carolinas on Monday and Tuesday. As the storm moves up the Atlantic coast of the US, the eastern Carolinas and parts of Virginia are expected to see minor river flooding. A hurricane warning means that hurricane conditions are expected somewhere within the warning area.Despite not knowing the exact path of the storm, states are preparing.
"It is the temperature forecast where accuracy went down," says Chen. It left 300,000 to 400,000 people without power in Puerto Rico, National Weather Service San Juan meteorologist Gabriel Lojero told CNN.
The Weather Channel's Jim Cantore was in Wrightsville Beach, North Carolina as Hurricane Isaias came roaring shore Monday Night. Be prepared with the most accurate 10-day forecast for New York City, NY with highs, lows, chance of precipitation from The Weather Channel and Weather.com "A similar analysis for February 2020 suggests that the forecast accuracy of surface meteorology could have been expected to improve in 2020 compared with 2017-2019, if aircraft observations were carried out as usual," the study says. Find out what's happening in the world as it unfolds.Delta Air Lines commercial planes are seen parked at Birmingham-Shuttlesworth International Airport, Alabama, because of flight reductions due to Covid-19.The study found that the "accuracy of surface meteorology forecast in March-May 2020 decreases remarkably" as flight density drops due to Covid-19. On Thursday, Isaias' exterior slammed Puerto Rico before it went over the Dominican Republic, all as a tropical storm. Hurricane Isaias is heading toward the Bahamas and Florida on Friday morning -- and may eventually have much of the US East Coast in its sights. "By Allison Chinchar and Virginia Langmaid, CNN Meteorologists These models are only as good as the data that is put into them.This data comes from a variety of tools, including aircraft, cruise ships, satellites, buoys, weather balloons, ground stations, and radar. "When the National Weather Service is anticipating high impact weather events, such as a possible tornado outbreak or a potential landfalling hurricane, (it) will usually conduct 'special' weather balloon launches to take additional weather measurements in the upper levels of the atmosphere," explains Kyle Theim, a meteorologist with the NWS in Atlanta. "Degradation of the weather forecast is more substantially in the Northern Hemisphere than the Southern Hemisphere," says Chen. Severe storm hit the northeast again and multiple tropical systems are also on the horizon.