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Saffir-Simpson Hurricane Scale
Category Wind Speed Storm Surge
  mph ft
5 ≥157 >18
4 130–156 13–18
3 111–129 9–12
2 96–110 6–8
1 74–95 4–5
Additional Classifications
Tropical Storm 39–73 0–3
Tropical Depression 0–38 0
The Saffir-Simpson Hurricane Scale is a classification used for most Western Hemisphere tropical cyclones that exceed the intensities of "tropical depressions" and "tropical storms", and thereby become hurricanes. Source: Intellicast

Beaufort Wind Scale

Number Of Storms Per 100 Yrs

Atlantic Basin Storm Count Since 1850


Atlantic Basin Storm Count Since 1850

Hurricane Strike Percentages


[Map of return period in years for hurricanes passing within 50 nautical miles] Estimated return period in years for hurricanes passing within 50 nautical miles of various locations on the U.S. Coast


[Map of return period in years for major hurricanes passing within 50 nautical miles] Estimated return period in years for major hurricanes passing within 50 nautical miles of various locations on the U.S. Coast


CONUS Hurricane Strikes

 
[Map of 1950-2011 CONUS Hurricane Strikes] 1950-2011 CONUS Hurricane Strikes (Courtesy of NCDC)

Lookup Historic Hurricane Tracks



Hurricane Katrina Track 2005

Typical Tropical Cyclone Origins and Track By Month



June Hurricane Climatology

July Hurricane Climatology

August Hurricane Climatology

September Hurricane Climatology

October Hurricane Climatology

November Hurricane Climatology

2017 Hurricane Season Storms

Tropical Storm ARLENE
Duration April 19 – April 21 2017
Peak intensity 50 mph (85 km/h) (1-min)
990 mbar (hPa)
Tropical Storm BRET
Duration June 19 – June 20 2017
Peak intensity 50 mph (85 km/h) (1-min)
1007 mbar (hPa)
Tropical Storm CINDY
Duration June 20 – June 23 2017
Peak intensity 60 mph (95 km/h) (1-min)
991 mbar (hPa)
Tropical Storm DON
Duration July 17 – July 18 2017
Peak intensity 50 mph (85 km/h) (1-min)
1005 mbar (hPa)
Tropical Storm EMILY
Duration July 30 – August 2 2017
Peak intensity 60 mph (95 km/h) (1-min)
1001 mbar (hPa)
Hurricane FRANKLIN
Duration August 7 – August 10 2017
Peak intensity 85 mph (140 km/h) (1-min)
981 mbar (hPa)
Hurricane GERT
Duration August 12 – August 17 2017
Peak intensity 110 mph (175 km/h) (1-min)
962 mbar (hPa)
Major Hurricane HARVEY
Duration August 17 – September 1 2017
Peak intensity 130 mph (215 km/h) (1-min)
937 mbar (hPa)
Major Hurricane IRMA
Duration August 30 – September 12 2017
Peak intensity 180 mph (285 km/h) (1-min)
914 mbar (hPa)
Major Hurricane JOSE
Duration September 5 – September 22 2017
Peak intensity 155 mph (250 km/h) (1-min)
938 mbar (hPa)
Hurricane KATIA
Duration September 5 – September 9 2017
Peak intensity 105 mph (165 km/h) (1-min)
972 mbar (hPa)
Tropical Storm LEE
Duration September 14 – September 30 2017
Peak intensity 115 mph (185 km/h) (1-min)
962 mbar (hPa)
Major Hurricane MARIA
Duration September 16 – September 30 2017
Peak intensity 175 mph (280 km/h) (1-min)
908 mbar (hPa)
Hurricane NATE
Duration October 4 – October 9 2017
Peak intensity 90 mph (150 km/h) (1-min)
981 mbar (hPa)
Major Hurricane OPHELIA
Duration October 9 – October 16 2017
Peak intensity 115 mph (185 km/h) (1-min)
959 mbar (hPa)
Tropical Storm PHILIPPE
Duration October 28 – October 29 2017
Peak intensity 40 mph (65 km/h) (1-min)
1000 mbar (hPa)
Tropical Storm RINA
Duration November 5 – November 9 2017
Peak intensity 60 mph (95 km/h) (1-min)
991 mbar (hPa)

Graphical Tropical Weather Outlook

Tropical cyclone formation is not expected during the next 5 days.

Page Navigation: Atlantic Tropical Outlook / Tropical Discussion / Active Tropical Systems
Scheduled Recon Flight Plans / Marine Weather Discussion / Tropical Monthly Summary

2 Day Graphical Tropical Weather Outlook
Atlantic 2 Day GTWO graphic

5 Day Graphical Tropical Weather Outlook
Atlantic 5 Day GTWO graphic

Atlantic Tropical Weather Outlook

  • Wed, 21 Nov 2018 05:01:05 +0000: Atlantic - Atlantic

    000
    ABNT20 KNHC 210500
    TWOAT

    Tropical Weather Outlook
    NWS National Hurricane Center Miami FL
    100 AM EST Wed Nov 21 2018

    For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

    Tropical cyclone formation is not expected during the next 5 days.

    $$
    Forecaster Pasch

Tropical Weather Discussion

  • Tue, 20 Nov 2018 23:37:20 +0000: NHC Atlantic Tropical Weather Discussion - NHC Tropical Weather Discussion (Atlantic)

    000
    AXNT20 KNHC 202337
    TWDAT

    Tropical Weather Discussion
    NWS National Hurricane Center Miami FL
    637 PM EST Tue Nov 20 2018

    Tropical Weather Discussion for North America, Central America
    Gulf of Mexico, Caribbean Sea, northern sections of South
    America, and Atlantic Ocean to the African coast from the
    Equator to 32N. The following information is based on satellite
    imagery, weather observations, radar and meteorological analysis.

    Based on 1800 UTC surface analysis and satellite imagery through
    2315 UTC.

    ...MONSOON TROUGH/ITCZ...

    The monsoon trough axis extends from the coast of Liberia near
    05N09W to 05N12W. The ITCZ extends from 05N12W to 05N20W to
    03N30W to 04N45W. Widely scattered moderate convection is off the
    coast of W Africa from 01N-07N between 09W-15W. Scattered moderate
    convection is from 01N-04N between 31W-35W.

    GULF OF MEXICO...

    As of 20/2100 UTC, a cold front extends from N Florida near
    30N84W to the north central Gulf of Mexico near 27N90W to the NW
    Gulf near 25N94W to the Bay of Campeche near 20N97W. Scattered
    showers are within 60 nm of the front. 15-25 kt N winds are W of
    the front. A prefrontal trough extends from central Florida to the
    SE Gulf near 25N86W. In the upper levels, zonal flow is noted
    over the Gulf.

    Expect the front over the eastern gulf to continue to shift
    southward the next couple of days while the western portion
    becomes stationary. The front will stall from S Florida to the NW
    Gulf near 26N95W to near the Bay of Campeche by Thu Night, and
    dissipate by Fri. A second cold front will shift across the
    northern waters late Fri through the weekend.

    CARIBBEAN SEA...

    10-20 kt tradewinds are over most of the Caribbean Sea. An area
    of scattered showers are N of the ABC Islands near 14N70W. The SW
    Caribbean has scattered showers S of 11N to include Costa Rica
    and Panama. The remainder of the Caribbean has mostly fair
    weather. In the upper levels a large upper level high is centered
    over the central Caribbean near 13N78W, that dominates the entire
    Caribbean.

    Expect fresh to strong winds to continue along the coast of
    Colombia through Thu. Large long period NE swell over the Atlantic
    will continue to impact the waters east of the Lesser Antilles
    through Wed afternoon.

    ATLANTIC OCEAN...

    A weak stationary front is over the W Atlantic from 31N71W to
    central Florida near 28N80W. A prefrontal trough extends from
    31N67W to the central Bahamas near 24N76W. Scattered showers are
    within 60 nm of the front and trough. A 1021 high is centered over
    the central Atlantic near 27N48W. A cold front dips into the E
    Atlantic from 31N14W to 29N29W to 25N37W. A stationary front
    continues to 31N45W. Scattered showers are within 90 nm of the
    front E of 30W.

    Expect over the W Atlantic for a cold front to move from the Gulf
    of Mexico to the W Atlantic Wed through Fri night, then become
    stationary Sat. High pres will build in the wake of the front.

    For additional information please visit
    http://www.hurricanes.gov/marine

    $$
    Formosa

Active Tropical Systems

  • Wed, 21 Nov 2018 05:01:05 +0000: Atlantic Tropical Weather Outlook - NHC Atlantic

    000
    ABNT20 KNHC 210500
    TWOAT

    Tropical Weather Outlook
    NWS National Hurricane Center Miami FL
    100 AM EST Wed Nov 21 2018

    For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

    Tropical cyclone formation is not expected during the next 5 days.

    $$
    Forecaster Pasch
  • Wed, 21 Nov 2018 05:01:05 +0000: There are no tropical cyclones at this time. - NHC Atlantic
    No tropical cyclones as of Wed, 21 Nov 2018 05:01:09 GMT

Scheduled Reconnaissance Flight Plans

  • Tue, 20 Nov 2018 16:09:30 +0000: Weather Reconnaissance Flights Plan of the Day - Weather Reconnaissance Flights Plan of the Day
     
     000
     NOUS42 KNHC 201609
     REPRPD
     WEATHER RECONNAISSANCE FLIGHTS
     CARCAH, NATIONAL HURRICANE CENTER, MIAMI, FL.
     1100 AM EST TUE 20 NOVEMBER 2018
     SUBJECT: TROPICAL CYCLONE PLAN OF THE DAY (TCPOD)
              VALID 21/1100Z TO 22/1100Z NOVEMBER 2018
              TCPOD NUMBER.....18-180
     
     I.  ATLANTIC REQUIREMENTS
         1. NEGATIVE RECONNAISSANCE REQUIREMENTS.
         2. OUTLOOK FOR SUCCEEDING DAY.....NEGATIVE.
     
     II. PACIFIC REQUIREMENTS
         1. NEGATIVE RECONNAISSANCE REQUIREMENTS.
         2. OUTLOOK FOR SUCCEEDING DAY.....NEGATIVE.
     
     NOTE:  THE ATLANTIC WINTER STORM REQUIREMENTS ARE NEGATIVE. 
     
     $$
     SEF
     
     NNNN
     

Marine Weather Discussion

  • Tue, 20 Nov 2018 19:00:39 +0000: NHC Marine Weather Discussion - NHC Marine Weather Discussion

    000
    AGXX40 KNHC 201900
    MIMATS

    Marine Weather Discussion
    NWS National Hurricane Center Miami FL
    200 PM EST Tue Nov 20 2018

    Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea,
    and Tropical North Atlantic from 07N to 19N between 55W and 64W
    and the Southwest North Atlantic including the Bahamas

    ...GULF OF MEXICO...

    A frontal boundary extends from the Florida Panhandle to weak
    low pres over the NW Gulf near 27N93W Louisiana to near Tampico
    Mexico. A high pressure to the W of the front will support strong
    winds W of the front and W of 92W today and tonight. A weak
    trough extending SW from near Tampa Florida to near 23N86W will
    dissipate by tonight. The low will lose identity by tonight and
    the front will stall from S Florida to the NW Gulf near 26N95W to
    near Veracruz Mexico by Thu Night. Weak low pres developing
    along the front E of Brownsville TX will generate strong winds
    within 120 nm of the TX coast on Thu, then the low and front will
    dissipate, allowing the winds to subside by Fri.

    ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
    55W AND 64W...

    Fresh to strong winds will continue along the coast of Colombia
    through Thu, then a cold front heading SE from the United States
    mainland will weaken the ridge N of the Caribbean and allow the
    winds to subside. Large long period NE swell over the Atlantic
    will continue to impact the waters east of the Lesser Antilles
    through Wed night.

    ...SW N ATLANTIC INCLUDING THE BAHAMAS...

    A weak surface trough over the SE Bahamas will dissipate by Wed.
    A frontal boundary extending NE from near Cape Canaveral Florida
    to 31N75W will sink S to reach the central Bahamas on Wed, then
    stall Thu through Fri night. Strong high pressure building S
    behind a reinforcing cold front Fri and Sat will cause strong
    winds to develop NE of the Bahamas. Seas outside the Bahamas will
    build to between 9 and 14 ft from Fri through Sat night.

    $$

    .WARNINGS...Any changes impacting coastal NWS offices will be
    coordinated through AWIPS II Collaboration Chat, or by
    telephone:

    .GULF OF MEXICO...
    .GMZ017...W CENTRAL GULF FROM 22N TO 26N W OF 94W...
    GALE CONDITIONS POSSIBLE Sun night.
    .GMZ023...SW GULF S OF 22N W OF 94W...
    GALE CONDITIONS POSSIBLE Sun night.

    .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
    55W AND 64W...
    None.

    .SW N ATLANTIC INCLUDING THE BAHAMAS...
    None.

    $$

    *For detailed zone descriptions, please visit:
    http://www.nhc.noaa.gov/abouttafbprod.shtml#OWF

    Note: gridded marine forecasts are available in the National
    Digital Forecast Database (NDFD) at:
    http://www.nhc.noaa.gov/marine/grids.php

    For additional information, please visit:
    http://www.nhc.noaa.gov/marine

    $$

    .Forecaster McElroy. National Hurricane Center.

Atlantic Tropical Monthly Summary

  • Thu, 01 Nov 2018 11:49:10 +0000: Atlantic - Atlantic

    000
    ABNT30 KNHC 011148
    TWSAT

    Monthly Tropical Weather Summary
    NWS National Hurricane Center Miami FL
    800 AM EDT Thu Nov 1 2018

    For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

    October was above average in the Atlantic basin. Three named
    storms formed during the month, with a fourth (Leslie) beginning
    in September and carrying over into October. Three of these storms
    became hurricanes during the month, and one became a major
    hurricane. This compares to October averages of two named storms
    and one hurricane every year, and a major hurricane about every
    third year.

    In terms of Accumulated Cyclone Energy (ACE), which measures the
    combined strength and duration of tropical storms and hurricanes,
    activity in the Atlantic basin thus far in 2018 has been above
    normal. The season has already had 7 systems that were subtropical
    at some point in their lifetime, which eclipses the previous record
    of 5 in 1969.

    Reports on individual cyclones, when completed, are available at
    the National Hurricane Center website at
    www.hurricanes.gov/data/tcr/index.php?season=2018&basin=atl .

    Summary Table

    Name Dates Max Wind (mph)
    ---------------------------------------------------
    TS Alberto 25-31 May 65*
    H Beryl 4-15 Jul 80*
    H Chris 6-12 Jul 105
    TS Debby 7- 9 Aug 50
    TS Ernesto 15-18 Aug 45
    MH Florence 31 Aug-17 Sep 140
    TS Gordon 3- 7 Sep 70
    H Helene 7-16 Sep 110
    H Isaac 7-15 Sep 75
    TS Joyce 12-18 Sep 45
    TD Eleven 22-23 Sep 35
    TS Kirk 22-28 Sep 60
    H Leslie 23 Sep-13 Oct 90
    MH Michael 7-12 Oct 155
    TS Nadine 9-12 Oct 65
    H Oscar 27-31 Oct 105
    ---------------------------------------------------

    * Denotes a storm for which the post-storm analysis is complete.

    $$
    Hurricane Specialist Unit

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