According to NHC: "A Hurricane Watch means that hurricane conditions are possible within the watch area". Despite the weakening shown at 72 hours, Florence is still expected to remain a risky hurricane through landfall.
"The Delaware Emergency Management Agency is closely monitoring the approach of Hurricane Florence, as well as Hurricane Isaac farther out in the Atlantic", Delaware Gov. John Carney stated "We are communicating and coordinating with Delaware state agencies, local partners, FEMA officials, and authoritiesinsurrounding states.Emergency management officials will continue to monitor the situation and provide updates on any protective actions that should be taken in response to Hurricane Florence.Delawareansand visitors should be prepared in the event that Delaware feels an impact from the storm.It is still tooearly to tell what impact Delaware willexperience, but it is never too early toplan and ensure you are prepared". Let's break it down one-by-one.
The storm's maximum sustained winds as of 5 p.m. are 140 miles per hour, NOAA noted. Tropical Storm Isaac was east of the Lesser Antilles and expected to pass south of Puerto Rico, Hispaniola and Cuba, while Hurricane Helene was moving north away from land. Storm force winds 105 miles or 165 km from the centre.
Florence's center is located roughly 750 miles southeast of the North Carolina, and SC border at the coast. Steady weakening is forecast to begin by late Tuesday.
Florence is so wide that a life-threatening storm surge was being pushed 300 miles (485 kilometers) ahead of its eye, and so wet that a swath from SC to OH and Pennsylvania could get deluged. Inland areas will have to deal with freshwater flooding.
Florence will hit the Carolinas Thursday or Friday. As NPR's Bill Chappell reported, the town of Mountain View on the Big Island recorded 51.53 inches of rain as a result of Lane, the third-highest total ever measured from a US storm. Some additional strengthening is expected today, and Helene is forecast to become a major hurricane by tonight. Rain looks like the largest impact. However, a different effect is possible. While it is expected to lose some power on Thursday, it should still be an extremely unsafe major storm when it makes landfall along the North Carolina coast. Given that the eye has mostly cleared out and has also warmed to near 19 deg C, the initial intensity has been bumped upward to 120 kt, which could be conservative.
Meanwhile, hurricane Florence - the first major hurricane of the season - is heading toward the U.S. Eastern Seaboard, with forecasters warning it could be one of the most catastrophic storms to hit the region in decades. It will continue west at 16 miles per hour.
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"Swells generated by Isaac will begin to affect portions of the Lesser Antilles on Wednesday afternoon".
As for hurricane Helene, it is on a predicted track that has the storm swinging to the northeast by Saturday, remaining in the middle of the North Atlantic. "I can't find another example of a hurricane/typhoon nearing Guam, Hawaii & the eastern United States at nearly exactly the same time (days ~ 4,5,6 respectively)".
Special weather statements were issued for tropical depression Gordon, which was expected to deliver up to 40 millimetres of rain to parts of New Brunswick, Nova Scotia and Newfoundland before dissipating on Wednesday.
Forecasters and politicians pleaded with the public to take the warnings seriously and minced no words in describing the threat.
An area of low pressure in the Atlantic has a 20% chance of development int he next 48 hours.
The hurricane season officially runs from June 1 to November 30, when the waters of the Atlantic Ocean are warm enough to produce tropical cyclones. It is not a threat to the U.S.