Timeline of the 2006 Atlantic hurricane season

The 2006 Atlantic hurricane season was the first since 2001 in which no hurricanes made landfall in the United States, and the first since 1994 that no tropical cyclones formed during October.cite web|author=Mainelli; Bevan|date=2006-11-01|accessdate=2006-11-01|url=http://www.nhc.noaa.gov/archive/2006/tws/MIATWSAT_oct.shtml?|publisher=National Hurricane Center|title=Monthly Tropical Weather Summary for October 2006] This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation. The season officially began on June 1, 2006, and lasted until November 30. The timeline includes information which was not operationally released, meaning that information from post-storm reviews by the National Hurricane Center, such as information about a storm that was not operationally warned on,To be warned on operationally means that storms were tracked at the time of their existance] have been included.

The 2006 Atlantic hurricane season was significantly less active than the previous year's Atlantic hurricane season.cite web|author=Mainelli; Bevan|date=2006-11-01|accessdate=2006-11-01|url=http://www.nhc.noaa.gov/archive/2006/tws/MIATWSAT_oct.shtml?|publisher=National Hurricane Center|title=Monthly Tropical Weather Summary for October 2006] Following the intense activity of 2005, forecasts predicted that the 2006 season would be only slightly less active. However, activity was slowed by a rapidly forming El Niño event in 2006, the presence of the Saharan Air Layer over the tropical Atlantic, and the steady presence of a robust secondary high pressure area to the Azores high centered around Bermuda. There were no tropical cyclones after October 2.cite web
author=Klotzbach, Philip J.; Gray, William M.|date=2006-11-17
title=Summary of 2006 Atlantic Tropical Cyclone Activity and Verification of Authors' Seasonal and Monthly Forecasts | publisher=Colorado State University | accessdate=2006-11-17 | url=http://hurricane.atmos.colostate.edu/Forecasts/2006/nov2006/] The calendar year 2006 also saw Tropical Storm Zeta, which arose in December 2005 and persisted until early January, only the second event on record that a storm spanned two calendar years in the Atlantic. The storm can be considered a part of the 2005 and 2006 seasons, although it occurred outside the June 1 – November 30 windows during which most Atlantic basin tropical cyclones form.

Timeline of storms

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January

January 1:*0000 UTC – The year 2006 begins with Tropical Storm Zeta still active from the previous season, making Zeta only the second cross-season North Atlantic storm ever recorded.cite web|author=Richard D. Knabb|coauthors=Daniel P. Brown|title=Tropical Cyclone Report: Tropical Storm Zeta|publisher=NOAA|date=2006-03-17|accessdate=2006-05-21|format=PDF|url=http://www.nhc.noaa.gov/pdf/TCR-AL312005_Zeta.pdf] January 6:*2 a.m. AST (0600 UTC) – Tropical Storm Zeta weakens into a tropical depression.:*5 p.m. AST (2100 UTC) – The National Hurricane Center issues its last advisory on dissipating Tropical Depression Zeta, finally ending the 2005 season.

June

June 1 :*The 2006 Atlantic hurricane season officially begins.cite web | author = Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division | title = Frequently Asked Questions: When is hurricane season?|publisher = NOAA | accessdate = 2008-08-21 | url = http://www.aoml.noaa.gov/hrd/tcfaq/G1.html] June 10:*1 a.m. CDT (0600 UTC) – Tropical Depression One forms 120 nautical miles (140 miles, 220 km) south of the western tip of Cuba.cite web |author=Avila, Lixion A. and Brown, Daniel P./National Hurricane Center |title=Tropical Cyclone Report: Tropical Storm Alberto |publisher=National Oceanic and Atmospheric Administration |date=2006-08-11 |accessdate=2006-10-05 |url=http://www.nhc.noaa.gov/pdf/TCR-AL012006_Alberto.pdf] :*7 p.m. CDT (0000 UTC June 11) – Tropical Depression One strengthens into Tropical Storm Alberto.June 13:*12:30 p.m. EDT (1630 UTC) – Tropical Storm Alberto makes landfall near Adams Beach, Florida, with 45 mph (70 km/h) winds.The figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following the convention used in the National Hurricane Center's [http://www.nhc.noaa.gov/archive/2004/index.shtml operational products] for each storm. All other units are rounded to the nearest digit.] June 14:*2 a.m. EDT (0600 UTC) – Tropical Storm Alberto weakens into a tropical depression.:*8 a.m. EDT (1200 UTC) – The remnants of Alberto become extratropical.

July

July 17:*0600 UTC – A previously extratropical low pressure area becomes a tropical depression about 210 nautical miles (245 miles, 390 km) southeast of Nantucket, Massachusetts. However, this depression is not assigned a number operationally, or warned on, by the National Hurricane Center.cite web |author = Blake, Eric S. and Beven, John L./National Hurricane Center |url = http://www.nhc.noaa.gov/pdf/TCR-AL502006_Unnamed.pdf |title = Tropical Cyclone Report: Unnamed Tropical Storm |publisher = NOAA |date = 2006-12-15 |accessdate = 2006-12-18] :*1200 UTC – The tropical depression near Nantucket strengthens into a tropical storm, but is not operationally named.July 18:*8 a.m. EDT (1200 UTC) – Tropical Depression Two forms 250 nautical miles (290 miles, 645 km) east-southeast of Wilmington, North Carolina.cite web |author = Pasch, Richard J./National Hurricane Center |url = http://www.nhc.noaa.gov/pdf/TCR-AL022006_Beryl.pdf |title = Tropical Cyclone Report: Tropical Storm Beryl |publisher = NOAA |date = 2006-08-31 |accessdate = 2006-10-05] :*1200 UTC – The unnamed tropical storm degenerates into a remnant low.:*2 p.m. EDT (1800 UTC) – Tropical Depression Two strengthens into Tropical Storm Beryl.July 21:*2:45 a.m. EDT (0645 UTC) – Tropical Storm Beryl makes landfall on the island of Nantucket, Massachusetts, with Convert|50|mph|km/h|abbr=on winds.:*2 p.m. EDT (1800 UTC) – Tropical Storm Beryl becomes extratropical.July 31:*8 p.m. EDT (0000 UTC August 1) – Tropical Depression Three forms 205 nautical miles (235 miles, 380 km) east-southeast of Barbuda.cite web |author = Stewart, Stacy R./National Hurricane Center |url = http://www.nhc.noaa.gov/pdf/TCR-AL032006_Chris.pdf |title = Tropical Cyclone Report: Tropical Storm Chris |publisher = NOAA |date = 2006-11-29 |accessdate = 2006-12-13]

August

August 1:*2 a.m. AST (0600 UTC) – Tropical Depression Three strengthens into Tropical Storm Chris.August 3:*2 p.m. AST (1800 UTC) – Tropical Storm Chris weakens to a tropical depression.August 4:*2 a.m. AST (0600 UTC) – Tropical Depression Chris weakens into a remnant low.August 21:*2 p.m. AST (1800 UTC) – Tropical Depression Four forms 225 nautical miles (260 miles, 415 km) south-southeast of Praia, Cape Verde.cite web |author=Franklin, James L./National Hurricane Center |title=Tropical Cyclone Report: Tropical Storm Debby |publisher=National Oceanic and Atmospheric Administration |date=2006-11-02 |accessdate=2006-11-22 |url=http://www.nhc.noaa.gov/pdf/TCR-AL042006_Debby.pdf] August 22:*8 p.m. AST (0000 UTC August 23) – Tropical Depression Four strengthens into Tropical Storm Debby.August 24:*2 p.m. AST (1800 UTC) – Tropical Depression Five forms in the Caribbean Sea about 40 nautical miles (45 miles, 75 km) north-northwest of Grenada.cite web |author=Knabb, Richard D. and Mainelli, Michelle/National Hurricane Center |title=Tropical Cyclone Report: Hurricane Ernesto |publisher=National Oceanic and Atmospheric Administration |date=2006-12-15 |accessdate=2006-12-26 |url=http://www.nhc.noaa.gov/pdf/TCR-AL052006_Ernesto.pdf] August 25:*8 a.m. AST (1200 UTC) – Tropical Depression Five strengthens into Tropical Storm Ernesto.August 26:*2 a.m. AST (0600 UTC) – Tropical Storm Debby weakens to a tropical depression.:*8 a.m. AST (1200 UTC) – Tropical Depression Debby weakens into a low.August 27:*2 a.m EDT (0600 UTC) – Tropical Storm Ernesto strengthens into Hurricane Ernesto.:*8 a.m. EDT (1200 UTC) – Hurricane Ernesto weakens to a tropical storm.August 28:*7:15 a.m. EDT (1115 UTC) – Tropical Storm Ernesto makes a first landfall in Cuba at Playa Cazonal with 40 mph (65 km/h) winds.August 29:*11 p.m. EDT (0300 UTC) – Tropical Storm Ernesto makes a second landfall at Plantation Key, Florida, with 45 mph (70 km/h) winds.August 30:*1 a.m. EDT (0500 UTC) – Tropical Storm Ernesto makes a third landfall in southwestern Miami-Dade County, Florida with 45 mph (70 km/h).August 31:*11:40 p.m. EDT (0340 UTC September 1) – Tropical Storm Ernesto makes a fourth landfall at Oak Island, North Carolina, with Convert|70|mph|km/h|abbr=on.

eptember

September 1:*8 a.m. EDT (1200 UTC) – Tropical Storm Ernesto weakens to a tropical depression.:*2 p.m. EDT (1800 UTC) – Tropical Depression Ernesto becomes extratropical.September 3:*2 p.m. AST (1800 UTC) – Tropical Depression Six forms 855 nautical miles (990 miles, 1585 km) west of the Cape Verde Islands.cite web |author=Beven, Jack/National Hurricane Center |title=Tropical Cyclone Report: Hurricane Florence|publisher=National Oceanic and Atmospheric Administration |date=2006-12-21 |accessdate=2007-01-05 |url=http://www.nhc.noaa.gov/pdf/TCR-AL062006_Florence.pdf] September 5:*2 a.m. AST (0600 UTC) – Tropical Depression Six strengthens into Tropical Storm Florence.September 10:*2 a.m. AST (0600 UTC) – Tropical Storm Florence strengthens into Hurricane Florence.:*2 p.m. EDT (1800 UTC) – Tropical Depression Seven forms 470 nautical miles (545 miles, 870 km) east-northeast of the Leeward Islands.cite web |author=Blake, Eric S./National Hurricane Center |title=Tropical Cyclone Report: Hurricane Gordon|publisher=National Oceanic and Atmospheric Administration |date=2006-11-14 |accessdate=2006-11-22 |url=http://www.nhc.noaa.gov/pdf/TCR-AL072006_Gordon.pdf] September 11:*8 a.m. EDT (1200 UTC) – Tropical Depression Seven strengthens into Tropical Storm Gordon.September 12:*8 a.m. EDT (1200 UTC) – Tropical Depression Eight forms 200 nautical miles (230 miles, 370 km) south-southeast of the Cape Verde Islands.cite web |author=Brown, Daniel P./National Hurricane Center |title=Tropical Cyclone Report: Hurricane Helene |publisher=National Oceanic and Atmospheric Administration |date=2006-11-15 |accessdate=2006-11-22 |url=http://www.nhc.noaa.gov/pdf/TCR-AL082006_Helene.pdf] :*8 p.m. AST (0000 UTC September 13) – Hurricane Florence becomes extratropical.:*8 p.m. EDT (0000 UTC September 13) – Tropical Storm Gordon strengthens into Hurricane Gordon.September 13:*2 p.m. EDT (1800 UTC) – Hurricane Gordon reaches Category 2 intensity.:*8 p.m. AST (0000 UTC September 14) – Hurricane Gordon reaches Category 3 intensity, becoming the first major hurricane of the season.:*8 p.m. AST (0000 UTC September 14) – Tropical Depression Eight strengthens into Tropical Storm Helene.September 16:*8 a.m. AST (1200 UTC) – Tropical Storm Helene strengthens into Hurricane Helene.September 17:*2 p.m. AST (1800 UTC) – Hurricane Helene reaches Category 2 intensity.:*8 p.m. AST (0000 UTC September 18) – Hurricane Helene reaches to Category 3 intensity, becoming the second major hurricane of the season.September 20:*8 p.m. AST (0000 UTC September 21) – Hurricane Gordon becomes extratropical.September 24:*2 p.m. AST (1800 UTC) – Hurricane Helene becomes extratropical.September 27:*2 p.m. EDT (1800 UTC) – Tropical Depression Nine forms 810 nautical miles (940 miles, 1500 km) east-southeast of Bermuda.cite web |author=Mainelli, Michelle/National Hurricane Center |title=Tropical Cyclone Report: Hurricane Isaac |publisher=National Oceanic and Atmospheric Administration |date=2006-11-16 |accessdate=2006-11-22 |url=http://www.nhc.noaa.gov/pdf/TCR-AL092006_Isaac.pdf] September 28:*2 a.m. EDT (0600 UTC) – Tropical Depression Nine strengthens into Tropical Storm Isaac.September 30:*8 a.m. AST (1200 UTC) – Tropical Storm Isaac strengthens into Hurricane Isaac.

October

October 2:*8 a.m. AST (1200 UTC) – Hurricane Isaac weakens to a tropical storm.:*8 p.m. AST (0000 UTC October 3) – Tropical Storm Isaac becomes extratropical.

Notes

References

ee also

*2006 Atlantic hurricane season
*List of Atlantic hurricane seasons
*Timeline of the 2006 Pacific hurricane season
*Timeline of the 2006 Pacific typhoon season