Facilities at the Virgin Islands National Park were closed Monday and Tuesday in anticipation of the storm and won't reopen until port and weather conditions permit, a statement from the agency said.
Lorenzo is heading to the west-northwest at about 17 miles per hour.
See the latest KATC 10 Day Forecast.
Jerry is no longer a tropical storm as of Wednesday morning as it neared Bermuda.
Forecasters with the National Hurricane Center say Lorenzo, located far out in the Atlantic, had maximum sustained winds of 80 miles per hour on Wednesday morning could become a major Category 3 hurricane by Thursday.
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Gilbert Institute Primary School in Paget, which lost power this morning, sent students home early and Wayne Caines, the Minister of National Security, is expected to give an update at 12.30pm. Jerry is now about 250 miles (405 kilometers) west-southwest of Bermuda and has maximum winds of 50 mph (85 kph).
The UK model (blue square) forecasts that Karen will turn to the northeast after the stall.
Puerto Rico's Department of Education said it was also "taking the necessary measures" to guarantee security during the storm.
It should be noted, while upper lows usually don't become tropical systems, Tropical Storm Imelda just a couple of weeks ago, was born of an upper low in a very tiny window, and we all know how that played out.
It was expected to keep heading north after passing over Puerto Rico and stay well east of the Bahamas, the Hurricane Center said.
Tropical Storm Karen is slightly stronger as it churns closer to Puerto Rico.
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Authorities in Puerto Rico and the US Virgin Islands reported limited power outages, flooding and landslides as Tropical Storm Karen swirled away from the north-east Caribbean early on Wednesday.
"Maximum sustained winds are near 45mph (75kmh) with higher gusts".
Officials said additional ground and water searches were planned, but the approach of Tropical Storm Karen threatened to complicate those plans.
Its maximum sustained winds increased to 40 miles per hour (65 kph) with additional strengthening expected.
Indeed, a dramatic rescue occurred on the island of Vieques, with Puerto Rico's National Guard completing a medivac of a weeks-old baby who was suffering from ill-health. "Some areas in southeastern Puerto Rico have already received up to five inches of rainfall, which has caused some flooding".
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