Timeline of the 2004 Atlantic hurricane season
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<timeline>
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PlotArea = top:10 bottom:80 right:20 left:20
Legend = columns:3 left:30 top:58 columnwidth:270
AlignBars = early
DateFormat = dd/mm/yyyy
Period = from:01/07/2004 till:31/12/2004
TimeAxis = orientation:horizontal
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barset:Hurricane width:10 align:left fontsize:S shift:(4,-4) anchor:till
from:31/07/2004 till:06/08/2004 color:C3 text:"[[Hurricane Alex (2004)|Alex]]"
from:03/08/2004 till:13/08/2004 color:TS text:"[[Tropical Storm Bonnie (2004)|Bonnie]]"
from:09/08/2004 till:14/08/2004 color:C4 text:"[[Hurricane Charley|Charley]]"
from:13/08/2004 till:21/08/2004 color:C2 text:"[[Hurricane Danielle (2004)|Danielle]]"
from:13/08/2004 till:15/08/2004 color:TS text:"[[Tropical Storm Earl (2004)|Earl]]"
from:24/08/2004 till:07/09/2004 color:C4 text:"[[Hurricane Frances|Frances]]"
from:27/08/2004 till:01/09/2004 color:C1 text:"[[Hurricane Gaston (2004)|Gaston]]"
from:27/08/2004 till:31/08/2004 color:TS text:"[[Tropical Storm Hermine (2004)|Hermine]]"
barset:break
from:02/09/2004 till:18/09/2004 color:C5
from:07/09/2004 till:09/09/2004 color:TD text:"Ten"
from:13/09/2004 till:28/09/2004 color:C3 text:"[[Hurricane Jeanne|Jeanne]]"
from:16/09/2004 till:24/09/2004 color:C4 text:"[[Hurricane Karl (2004)|Karl]]"
from:19/09/2004 till:03/10/2004 color:C1 text:"[[Hurricane Lisa (2004|Lisa]]"
from:08/10/2004 till:10/10/2004 color:TS text:"[[Tropical Storm Matthew (2004)|Matthew]]"
from:10/10/2004 till:11/10/2004 color:TS text:"[[Subtropical Storm Nicole (2004)|Nicole]]"
from:29/11/2004 till:03/12/2004 color:TS text:"[[Tropical Storm Otto (2004)|Otto]]"
barset:break
from:22/09/2004 till:24/09/2004 color:TS text:"[[Hurricane Ivan|Ivan]]"
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bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas
from:01/07/2004 till:01/08/2004 text:July
from:01/08/2004 till:01/09/2004 text:August
from:01/09/2004 till:01/10/2004 text:September
from:01/10/2004 till:01/11/2004 text:October
from:01/11/2004 till:01/12/2004 text:November
from:01/12/2004 till:31/12/2004 text:December
TextData =
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text:"(From the"
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text:"[[Saffir-Simpson Hurricane Scale]])"
</timeline>
Below is a '''timeline of the Atlantic hurricane 2004 season''', documenting all the storm formations, strengthening, weakening, [[landfall (meteorology)|landfalls]], [[Extratropical cyclone#Extratropical transition|extratropical transitions]], as well as dissipation. The [[2004 Atlantic hurricane season]] officially began on [[June 1]], [[2004]], and lasted until [[November 30]]. For convenience and clarity, in the timeline below, all landfalls are bolded. The timeline also includes information which was not operationally released, meaning that information from post-storm reviews by the [[National Hurricane Center]], such as information on a storm that was not operationally warned on, have been included.
The graphical bar above gives a brief overview of storm activity during the season, and for convenience, the storm's maximum intensity is included as a color bar.
==March==
Although not part of the traditional Atlantic hurricane season, one event in the South Atlantic was so unusual as to merit inclusion here.
On [[March 25]], a tropical cyclone (unofficially named [[Cyclone Catarina|Catarina]]) formed in the South Atlantic. Although its status is questioned, Catarina is considered to be the first hurricane to have formed in the South Atlantic since [[weather satellite|satellite observations]] began.
It made landfall late on [[March 27]] in the [[Brazil]]ian state of [[Santa Catarina (Brazil)|Santa Catarina]]. The storm killed at least three, and caused over 350 million USD in damage.
==June==
No named storms formed in [[June 2004]]. On average, June has a roughly 50% chance of having no named storms. At the time, forecasters noted that this was not an indication of a quiet season, as even active seasons often have no named storms form in June.
==July==
;[[July 31]]
:*2 p.m. [[Eastern Daylight Time|EDT]] (1800 [[Coordinated Universal Time|UTC]]) - '''Tropical Depression One''' forms 200 statute miles (325 km) east of [[Jacksonville, Florida]].
== August ==
;[[August 1]]
:*2 p.m. EDT (1800 UTC) - Tropical Depression One strengthens into '''Tropical Storm Alex'''.
;[[August 3]]
:*2 a.m. EDT (0600 UTC) - Tropical Storm Alex strengthens into '''[[Hurricane Alex (2004)|Hurricane Alex]]'''.
:*8 a.m. EDT (1200 UTC) - Hurricane Alex reaches Category 2 strength.
:*8 a.m. EDT (1200 UTC) - '''Tropical Depression Two''' forms near the [[Lesser Antilles]], 415 statute miles (665 km) east of the [[Lesser Antilles]].
:*1 p.m. EDT (1700 UTC) - '''Hurricane Alex skirts the [[Outer Banks]] of [[North Carolina]] but does not make landfall.'''
;[[August 4]]
:*2 p.m. EDT (1800 UTC) - Tropical Depression Two degenerates into a tropical wave in the eastern [[Caribbean Sea]].
:*8 p.m. EDT (0000 UTC, [[August 5]]) - Hurricane Alex reaches Category 3 strength. The storm is centered 445 statute miles (715 km) southwest of [[Halifax Urban Area|Halifax, Nova Scotia]], the second furthest north a hurricane has reached this strength.
;[[August 6]]
:*8 a.m. [[AST]] (1200 UTC) - Hurricane Alex weakens into a tropical storm.
:*7 a.m. [[CDT]] (1200 UTC) - '''Tropical Depression Two''' regenerates in the [[Yucatan Channel]].
:*2 p.m. AST (1800 UTC) - Tropical Storm Alex becomes [[extratropical]] east of [[Newfoundland (island)|Newfoundland]].
;[[August 9]]
:*8 a.m. AST (1200 UTC) - '''Tropical Depression Three''' forms near the [[Windward Islands]], 115 statute miles (80 km) south-southeast of [[Barbados]].
:*7 a.m. CDT (1200 UTC) - Tropical Depression Two strengthens into '''[[Tropical Storm Bonnie (2004)|Tropical Storm Bonnie]]''' in the southern [[Gulf of Mexico]].
;[[August 10]]
:*2 a.m. AST (0600 UTC) - Tropical Depression Three strengthens into '''Tropical Storm Charley'''.
;[[August 11]]
:*2 p.m. EDT (1800 UTC) - Tropical Storm Charley strengthens into '''[[Hurricane Charley]]'''.
:*8 p.m. EDT (0000 UTC, [[August 12]]) - '''Hurricane Charley skirts the southern coast of [[Jamaica]].'''
;[[August 12]]
:*8 a.m. EDT (1200 UTC) - '''Hurricane Charley passes between [[Grand Cayman]] and [[Little Cayman]].'''
:*10 a.m. EDT (1400 UTC) - '''Tropical Storm Bonnie makes landfall near [[Apalachicola, Florida]] with {{convert|45|mi/h|km/h|0|abbr=on}} winds.'''
:*11 a.m. EDT (1500 UTC) - Hurricane Charley reaches Category 2 intensity.
:*2 p.m. EDT (1800 UTC) - Tropical Storm Bonnie weakens into a tropical depression.
;[[August 13]]
:*12:30 a.m. EDT (0430 UTC) - '''Hurricane Charley makes its first landfall in [[Cuba]] as a Category 3 storm with {{convert|120|mi/h|km/h|-1|abbr=on}} winds, but weakening back down to Category 2 as it leaves the island just west of [[Havana]].'''
:*8 a.m. AST (1200 UTC) - '''Tropical Depression Four''' forms 240 statute miles (390 km) south-southeast of [[Cape Verde]].
:*10 a.m. EDT (1400 UTC) - Hurricane Charley reaches Category 3 intensity again.
:*1 p.m. EDT (1700 UTC) - Hurricane Charley reaches Category 4 intensity.
:*2 p.m. AST (1800 UTC) - '''Tropical Depression Five''' forms 1150 statute miles (1850 km) east of the Windward Islands.
:*3:45 p.m. EDT (1945 UTC) - '''Hurricane Charley makes its second landfall just West of [[Fort Myers, Florida]] with {{convert|150|mi/h|km/h|-1|abbr=on}} winds.'''
:*4:45 p.m. EDT (2045 UTC) - '''Hurricane Charley makes its third landfall at [[Punta Gorda, Florida]] with {{convert|145|mi/h|km/h|0|abbr=on}} winds.'''
:*8 p.m. EDT (0000 UTC, [[August 14]]) - Tropical Depression Bonnie degenerates into a remnant low.
:*8 p.m. AST (0000 UTC, [[August 14]]) - Tropical Depression Four strengthens into '''Tropical Storm Danielle'''.
:*10:30 EDT (0130 UTC, [[August 14]]) - '''Hurricane Charley crosses central Florida, passing near [[Orlando, Florida|Orlando]].'''
:*11:30 p.m. EDT (0330 UTC, [[August 14]]) - '''Hurricane Charley exits Florida near [[Daytona Beach, Florida|Daytona Beach]].'''
;[[August 14]]
:*10 a.m. EDT (1400 UTC) - '''Hurricane Charley makes a fourth landfall near Cape Romain, [[South Carolina]] with {{convert|80|mi/h|km/h|0|abbr=on}} winds and moves back offshore.'''
:*12 p.m. EDT (1600 UTC) - '''Hurricane Charley makes a fifth landfall near [[North Myrtle Beach, South Carolina]] with {{convert|75|mi/h|km/h|0|abbr=on}}.'''
:*2 p.m. EDT (1800 UTC) - Hurricane Charley weakens into a tropical storm.
:*2 p.m. AST (1800 UTC) - Tropical Depression Five strengthens into '''[[Tropical Storm Earl (2004)|Tropical Storm Earl]]'''.
:*8 p.m. EDT (0000 UTC, [[August 15]]) - Tropical Storm Charley becomes extratropical over South Carolina.
:*8 p.m. AST (0000 UTC, [[August 15]]) - Tropical Storm Danielle strengthens into '''[[Hurricane Danielle (2004)|Hurricane Danielle]]'''.
;[[August 15]]
:*10 a.m. EDT (1400 UTC) - Tropical Storm Earl passes just south of [[Grenada]] and enters the Caribbean.
:*2 p.m. AST (1800 UTC) - Hurricane Danielle reaches Category 2 intensity.
:*8 p.m. EDT (0000 UTC, [[August 16]]) - Tropical Storm Earl degenerates into a tropical wave.
;[[August 18]]
:*8 a.m. AST (1200 UTC) - Hurricane Danielle weakens into a tropical storm.
;[[August 20]]
:*2 p.m. AST (1800 UTC) - Tropical Storm Danielle weakens into a tropical depression.
;[[August 21]]
:*2 p.m. AST (1800 UTC) - Danielle dissipates into a broad area of low-pressure.
;[[August 24]]
:*8 p.m. EDT (0000 UTC, [[August 25]]) - '''Tropical Depression Six''' forms 750 statute miles (1200 km) west-southwest of Cape Verde.
;[[August 25]]
:*2 p.m. EDT (1800 UTC) - Tropical Depression Six strengthens into '''Tropical Storm Frances'''.
;[[August 26]]
:*2 p.m. EDT (1800 UTC) - Tropical Storm Frances strengthens into '''[[Hurricane Frances]]'''.
;[[August 27]]
:*8 a.m. EDT (1200 UTC) - Hurricane Frances reaches Category 2 strength.
:*8 a.m. EDT (1200 UTC) - '''Tropical Depression Seven''' forms 130 statute miles (215 km) east-southeast of [[Charleston, South Carolina]].
:*2 p.m. EDT (1800 UTC) - Hurricane Frances reaches Category 3 strength.
:*2 p.m. EDT (1800 UTC) - '''Tropical Depression Eight''' forms 230 statute miles (370 km) south of [[Bermuda]].
;[[August 28]]
:*2 a.m. EDT (0600 UTC) - Tropical Depression Seven strengthens into '''Tropical Storm Gaston'''.
:*2 p.m. EDT (1800 UTC) - Hurricane Frances reaches Category 4 strength.
;[[August 29]]
:*8 a.m. EDT (1200 UTC) - Tropical Storm Gaston strengthens into '''[[Hurricane Gaston (2004)|Hurricane Gaston]]'''.
:*8 a.m. EDT (1200 UTC) - Tropical Depression Eight strengthens into '''[[Tropical Storm Hermine (2004)|Tropical Storm Hermine]]'''.
:*10 a.m. EDT (1400 UTC) - '''Hurricane Gaston makes landfall near [[Awendaw, South Carolina]] with {{convert|75|mi/h|km/h|0|abbr=on}} winds.'''
:*8 p.m. EDT (0000 UTC, [[August 30]]) - Tropical Storm Gaston weakens into a tropical depression.
;[[August 30]]
:*8 p.m. EDT (0000 UTC, [[August 31]]) - Tropical Depression Gaston re-strengthens into a tropical storm.
;[[August 31]]
:*2 a.m. EDT (0600 UTC) - '''Tropical Storm Hermine makes landfall near [[New Bedford, Massachusetts]] with {{convert|40|mi/h|km/h|0|abbr=on}} winds.'''
:*8 a.m. EDT (1200 UTC) - Tropical Storm Hermine becomes extratropical.
== September ==
;[[September 1]]
:*8 a.m. EDT (1200 UTC) - Tropical Storm Gaston becomes extratropical.
;[[September 2]]
:*2 p.m. EDT (1800 UTC) - '''Tropical Depression Nine''' forms about 550 statute miles (900 km) south-west of Cape Verde.
:*3:30 p.m. EDT (1930 UTC) - '''Hurricane Frances strikes [[San Salvador Island]] with {{convert|125|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 3]]
:*1:30 a.m. EDT (0530 UTC) - '''Hurricane Frances strikes [[Cat Island (Bahamas)|Cat Island]] with {{convert|115|mi/h|km/h|0|abbr=on}} winds.'''
:*2 a.m. EDT (0600 UTC) - Tropical Depression Nine strengthens into '''Tropical Storm Ivan'''.
:*6 a.m. EDT (1000 UTC) - '''Hurricane Frances strikes [[Eleuthera]] with {{convert|110|mi/h|km/h|-1|abbr=on}} winds.'''
;[[September 4]]
:*6 a.m. EDT (1000 UTC) - '''Hurricane Frances strikes [[Grand Bahama]] with {{convert|105|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 5]]
:*12:30 a.m. EDT (0430 UTC) - '''Hurricane Frances makes landfall on the east coast of Florida with {{convert|105|mi/h|km/h|0|abbr=on}} winds.'''
:*2 a.m. EDT (0600 UTC) - Tropical Storm Ivan strengthens into '''[[Hurricane Ivan]]'''.
:*8 a.m. EDT (1200 UTC) - Hurricane Ivan reaches Category 2 strength.
:*2 p.m. EDT (1800 UTC) - Hurricane Ivan reaches Category 3 strength.
:*2 p.m. EDT (1800 UTC) - Hurricane Frances weakens into a tropical storm.
:*8 p.m. EDT (0000 UTC, [[September 6]]) - Hurricane Ivan reaches Category 4 strength.
:*approximately 11 p.m. EDT (0300 UTC, [[September 6]]) - '''Tropical Storm Frances emerges over the Gulf of Mexico.'''
;[[September 6]]
:*2 p.m. EDT (1800 UTC) - '''Tropical Storm Frances makes its second landfall near [[St. Marks, Florida]] with {{convert|60|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 7]]
:*2 a.m. EDT (0600 UTC) - Tropical Storm Frances weakens into a tropical depression.
:*5 a.m. AST (0900 UTC) - '''Tropical Depression Ten''' forms 725 statute miles (1150 km) west-southwest of the Azores.
:*5:30 p.m. EDT (2130 UTC) - '''Hurricane Ivan passes just south of [[Grenada]] with {{convert|125|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 9]]
:*2 a.m. AST (0600 UTC) - Hurricane Ivan reaches Category 5 strength less than 100 statute miles (160 km) away from [[Aruba]].
:*8 a.m. AST (1200 UTC) - Tropical Depression Ten degenerates into a remnant low.
;[[September 10]]
:*11:30 p.m. EDT (0330 UTC, [[September 11]] - '''Hurricane Ivan passes just south of [[Jamaica]] with {{convert|150|mi/h|km/h|-1|abbr=on}} winds.'''
;[[September 11]]
:*8 p.m. EDT (0000 UTC, [[September 12]]) - Hurricane Ivan has a recorded minimum pressure of 910 [[millibar]]s, making it the then sixth most intense Atlantic hurricane on record.
;[[September 12]]
:*10:45 a.m. EDT (1415 UTC) - '''Hurricane Ivan passes close to [[Grand Cayman]] with {{convert|150|mi/h|km/h|-1|abbr=on}} winds.'''
; [[September 13]]
:*2 p.m. AST (1800 UTC) - '''Tropical Depression Eleven''' forms 70 statute miles (110 km) east-southeast of [[Guadeloupe]].
:*9 p.m. EDT (0100 UTC, [[September 14]]) - '''Hurricane Ivan passes near the western tip of [[Cuba]] with {{convert|160|mi/h|km/h|-1|abbr=on}} winds.'''
;[[September 14]]
:*12 a.m. AST (0400 UTC) - '''Tropical Depression Eleven makes landfall on [[Guadeloupe]] with {{convert|35|mi/h|km/h|0|abbr=on}} winds.'''
:*8 a.m. AST (1200 UTC) - Tropical Depression Eleven strengthens into '''Tropical Storm Jeanne'''.
;[[September 15]]
:*12 p.m. EDT (1600 UTC) - '''Tropical Storm Jeanne makes landfall near [[Yabucoa, Puerto Rico]] with {{convert|60|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 16]]
:*2 a.m. AST (0600 UTC) - '''Tropical Depression Twelve''' forms 390 statute miles (630 km) southwest of the [[Cape Verde]] islands.
:*1:50 a.m. CDT (0650 UTC) - '''Hurricane Ivan makes landfall near [[Gulf Shores, Alabama]] with {{convert|120|mi/h|km/h|-1|abbr=on}} winds.'''
:*7 a.m. AST (1100 UTC) - '''Tropical Storm Jeanne strengthens into [[Hurricane Jeanne]] as it makes landfall on the [[Dominican Republic]] with {{convert|80|mi/h|km/h|0|abbr=on}} winds'''.
:*1 p.m. CDT (1800 UTC) - Hurricane Ivan weakens into a tropical storm.
:*2 p.m. AST (1800 UTC) - Tropical Depression Twelve strengthens into '''Tropical Storm Karl'''.
:*7 p.m. CDT (0000 UTC, [[September 17]]) - Tropical Storm Ivan weakens into a tropical depression.
:*8 p.m. AST (0000 UTC, [[September 17]]) - Hurricane Jeanne weakens into a tropical storm as it interacts with [[Hispaniola]].
;[[September 17]]
:*2 p.m. AST (1800 UTC) - Tropical Storm Jeanne weakens into a tropical depression.
:*8 p.m. AST (0000 UTC, [[September 18]]) - Tropical Depression Jeanne re-strengthens to '''Tropical Storm Jeanne'''.
:*8 p.m. EDT (0000 UTC, [[September 18]]) - Tropical Storm Karl strengthens into '''[[Hurricane Karl (2004)|Hurricane Karl]]'''.
;[[September 18]]
:*2 a.m. EDT (0600 UTC) - Hurricane Karl reaches Category 2 strength.
:*2 p.m. EDT (1800 UTC) - Tropical Depression Ivan becomes extratropical while crossing [[Virginia]]. Some remnants travel north, others loop back south.
;[[September 19]]
:*2 a.m. EDT (0600 UTC) - Hurricane Karl reaches Category 3 strength.
:*2 p.m. EDT (1800 UTC) - '''Tropical Depression Thirteen''' forms 520 statute miles (830 km) west-southwest of the [[Cape Verde]] islands.
;[[September 20]]
:*2 a.m. EDT (0600 UTC) - Hurricane Karl reaches Category 4 strength.
:*8 a.m. AST (1200 UTC) - Tropical Depression Thirteen strengthens into '''Tropical Storm Lisa'''.
:*2 p.m. AST (1800 UTC) - Tropical Storm Jeanne strengthens back into '''Hurricane Jeanne'''.
;[[September 22]]
:*2 a.m. AST (0600 UTC) - Hurricane Jeanne reaches Category 2 strength.
:*1 p.m. CDT (1800 UTC) - A partial remnant of former Hurricane Ivan regenerates into '''Tropical Depression Ivan''' in the Gulf of Mexico.
:*7 p.m. CDT (0000 UTC, [[September 23]]) - Tropical Depression Ivan strengthens into '''Tropical Storm Ivan''', nearly a week after being classified as [[extratropical]].
;[[September 23]]
:*2 p.m. AST (1800 UTC) - Tropical Storm Lisa weakens into a tropical depression.
:*7 p.m. CDT (0000 UTC, [[September 24]]) - Tropical Storm Ivan weakens into a tropical depression.
:*9 p.m. CDT (0200 UTC, [[September 24]]) - '''Tropical Depression Ivan makes its second landfall near [[Cameron, Louisiana]] with {{convert|30|mi/h|km/h|0|abbr=on}} winds.'''
;[[September 24]]
:*2 a.m. AST (0600 UTC) - Tropical Depression Lisa regains tropical storm strength.
:*7 a.m. CDT (1200 UTC) - Tropical Depression Ivan dissipates over Texas.
:*2 p.m. AST (1800 UTC) - Tropical Storm Lisa weakens into a tropical depression again.
:*8 p.m. EDT (0000 UTC, [[September 25]]) - Hurricane Karl becomes extratropical, but remains a strong storm heading north.
;[[September 25]]
:*2 a.m. AST (0600 UTC) - Tropical Depression Lisa become '''Tropical Storm Lisa''' for the third time.
:*8 a.m. AST (1200 UTC) - '''Hurricane Jeanne reaches Category 3 strength while it makes its third landfall on [[Abaco Islands|Abaco]] with {{convert|115|mi/h|km/h|0|abbr=on}} winds.'''
:*2 p.m. AST (1800 UTC) - '''Hurricane Jeanne passes near [[Grand Bahama]] with {{convert|120|mi/h|km/h|-1|abbr=on}} winds.'''
;[[September 26]]
:*12 a.m. EDT (0400 UTC) - '''Hurricane Jeanne makes landfall near [[Stuart, Florida]] with {{convert|120|mi/h|km/h|-1|abbr=on}} winds.'''
:*2 p.m. EDT (1800 UTC) - Hurricane Jeanne weakens into a tropical storm.
;[[September 27]]
:*2 p.m. EDT (1800 UTC) - Tropical Storm Jeanne weakens into a tropical depression.
;[[September 28]]
:*8 p.m. EDT (0000 UTC, [[September 29]]) - Tropical Depression Jeanne becomes extratropical.
==October==
;[[October 2]]
:*2 a.m. AST (0600 UTC) - Tropical Storm Lisa strengthens into '''[[Hurricane Lisa (2004)|Hurricane Lisa]]'''.
:*2 p.m. AST (1800 UTC) - Hurricane Lisa weakens into a tropical storm.
;[[October 3]]
:*2 a.m. AST (0600 UTC) - Tropical Storm Lisa becomes extratropical.
;[[October 8]]
:*7 a.m. CDT (1200 UTC) - '''Tropical Depression Fourteen''' forms 210 statute miles (330 km) southeast of [[Brownsville, Texas]].
:*1 p.m. CDT (1800 UTC) - Tropical Depression Fourteen strengthens into '''[[Tropical Storm Matthew (2004)|Tropical Storm Matthew]]'''.
;[[October 10]]
:*2 a.m. AST (0600 UTC) - A low-pressure system 140 statute miles (220 km) southwest of Bermuda becomes '''[[Subtropical Storm Nicole (2004)|Subtropical Storm Nicole]]'''.
:*6 a.m. CDT (1100 UTC) - '''Tropical Storm Matthew makes landfall on the [[Louisiana]] coast south of [[Houma, Louisiana|Houma]] with {{convert|40|mi/h|km/h|0|abbr=on}} winds.'''
:*7 a.m. CDT (1200 UTC) - Tropical Storm Matthew weakens into a tropical depression.
:*7 p.m. CDT (0000 UTC, [[October 11]]) - Tropical Depression Matthew becomes extratropical.
:*8 p.m. AST (0000 UTC, [[October 12]]) - Subtropical Storm Nicole is absorbed by a larger non-tropical cyclone.
==November==
;[[November 29]]
:*7 a.m. EST (1200 UTC) - '''Subtropical Storm Otto''' forms 1150 miles (1850 km) east-southeast of [[Bermuda]] from a non-tropical low.
;[[November 30]]
:*7 a.m. EST (1200 UTC) - Subtropical Storm Otto gains tropical characteristics and becomes '''[[Tropical Storm Otto (2004)|Tropical Storm Otto]]'''.
== December ==
;[[December 2]]
:* 7 a.m. EST (1200 UTC) - Tropical Storm Otto weakens into a tropical depression.
;[[December 3]]
:* 1 a.m. EST (0600 UTC) - Tropical Depression Otto dissipates into a remnant low, ending the season.
== See also ==
{{tcportal}}
* [[2004 Atlantic hurricane season]]
* [[List of Atlantic hurricane seasons]]
* [[Timeline of the 2004 Pacific hurricane season]]
* [[Timeline of the 2004 Pacific typhoon season]]
{{start box}}{{succession box|before=None|title=Atlantic hurricane seasons timelines|years=2004|after=[[Timeline of the 2005 Atlantic hurricane season|2005]]}}{{end box}}
{{2004 Atlantic hurricane season buttons}}
{{DEFAULTSORT:Hurricane season Atlantic 2004}}
[[Category:2004 Atlantic hurricane season| Timeline]]
[[Category:2004 meteorology]]
[[Category:2004 timelines]]
[[Category:Timelines]]