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Remnants of Tropical Storm Florence (06L) in Caribbean

18.4N 63.5W

August 9th, 2012 Category: Tropical Storms

Remnants of Tropical Storm Florence (06L) – August 9, 2012

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A low pressure trough – the remnants of Tropical Storm Florence (06L) – is producing an area of disorganized showers and thunderstorms several hundred miles north-northeast of the northern Leeward Islands. Although upper-level winds may become a little more conducive over the next couple of days, significant redevelopment of this system is not expected at this time. This system has a low chance (10 percent) of becoming a tropical cyclone again during the next 48 hours.

Tropical Storm Florence West of Cape Verde Islands

16.0N 31W

August 4th, 2012 Category: Tropical Storms

Tropical Storm Florence – August 4th, 2012

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Tropical Storm Florence - August 4th, 2012 © Univ. of Wisconsin

Tropical Storm Florence

Late on August 1, a vigorous tropical wave emerged off the coast of Africa. The wave developed a mid-level spin, and on August 2, the National Hurricane Center began to monitor the wave. The wave slowly organized, and on August 4, the storm became Tropical Depression Six. The system then strengthened into Tropical Storm Florence.

As of 11 a.m. AST (1500 UTC) August 4, Tropical Storm Florence (06L) is located within 30 nautical miles of 14.8°N 30.6°W, about 415 mi (665 km) west of the southernmost Cape Verde islands. Maximum sustained winds are 40 knots (45 mph, 75 km/h), with stronger gusts. Minimum central pressure is 1002 mbar (hPa; 29.59 InHg), and the system is moving west-northwest at 14 kt (16 mph, 26 km/h). Tropical storm force winds extend outward up to 45 miles (75 km) from the center of Florence.

Tropical Depression Six (06L) Moving East-northeast Off Coast of North America

39.9N 61.8W

August 13th, 2011 Category: Tropical Storms

Tropical Depression 06L - August 12th, 2011

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Track of TD 06L - August 12th, 2011 © Univ. of Wisconsin

Track of TD 06L

At 5:00 PM EDT (2100 UTC) the center of Tropical Depression Six was located near latitude 36.0 north, longitude 63.9 west. The main image shows convection related to the system, with the depression itself partially visible at the lower left.

The depression is moving toward the east-northeast near 16 mph (26 km/h). This general motion is expected to continue for the next couple of days.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some strengthening is forecast and the depression could become a tropical storm Friday night or Saturday. Estimated minimum central pressure is 1011 mb (29.85 inches).

A Look Back at Hurricane Danielle (06L)

44.5N 58.8W

September 12th, 2010 Category: Tropical Cyclones

Hurricane Danielle (06L) - August 29th, 2010

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The name Danielle has been used for six tropical cyclones in the Atlantic Ocean. The 2010 storm, Hurricane Danielle (06L), lasted from August 21st to August 31st.

On August 19, an area of low pressure moved off the West coast of Africa. Moving through favorable conditions, it developed into Tropical Depression Six near the Cape Verde Islands on August 21, the first of the series of Cape Verde-type storms.

On August 22 the system attained tropical storm status, thus earning the name “Danielle”. The next day it attained hurricane status, becoming the second of the season and strengthened further to a Category 2 hurricane.

On August 24, Danielle suddenly weakened from a Category 2 hurricane to a Category 1 due to unexpected dry air intrusions and westerly shear. Later that day, Danielle briefly weakened to a tropical storm, before restrengthening into a Category 1 hurricane several hours later. Hours later, Danielle restrengthened into a Category 2 and developed an eye in the morning hours of August 26.

On August 27, Hurricane Danielle strengthened to a Category 3 hurricane, becoming the first major hurricane of the season, and further strengthened to a Category 4 hurricane shortly after. Danielle later weakened to a Category 3, then Category 2 hurricane, and later became a Category 1 Hurricane due to an eyewall replacement cycle, while avoiding land areas. As the storm was moving in a northerly manner, it was not expected to strengthen any more as it would be experiencing increasing wind shear and colder surface waters.

It became extratropical early on August 31 southeast of Newfoundland without having directly impacted land. It was fully absorbed by a larger extratropical low on September 4 over Greenland. One person drowned in a rip current related to the distant hurricane near Satellite Beach, Florida.

Hurricane Danielle (06L) South of Newfoundland and Labrador, Canada

44.6N 56W

August 30th, 2010 Category: Tropical Cyclones

Hurricane Danielle (06L) - August 29th, 2010

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Track of TS 06L - August 28th, 2010 © Univ. of Wisconsin

Track of TS 06L

On August 27, Hurricane Danielle (06L) strengthened to a Category 3 hurricane, becoming the first major hurricane of the season, and further strengthened to a Category 4 hurricane shortly after.

Danielle later weakened to a Category 3, then Category 2 hurricane, and later became a Category 1 Hurricane. As the storm is moving in a northerly manner, it is not expected to strengthen, since it will be experiencing increasing wind shear and colder surface waters.

The center of Hurricane Danielle is located near 38.0°N 54.5°W, about 605 miles (975 km) south of Cape Race, Newfoundland and Labrador.  The minimum central pressure is estimated to be 977 mbar (hPa, 28.85 inHg) and the storm is moving north-northeast at 29 mph (46 km/h).

Maximum sustained winds are estimated at 80 mph (130 km/h), with higher gusts. Tropical storm force winds extend outward up to 310 miles (500 km) from the center of Danielle, and hurricane force winds extend up to 85 miles (140 km) from the center. Very high surf and rip currents are likely along the northern East Coast of the United States and the coast of Atlantic Canada, through Monday.

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