Days Left Hurricane Season 2017
days
0
7
hours
1
1
minutes
0
9
seconds
3
8
Active Storms: None.
Active Investigations: None.
Areas of Interest: None.

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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

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[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


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  • Thu, 23 Nov 2017 17:08:23 +0000: Atlantic Tropical Weather Outlook - NHC Atlantic

    000
    ABNT20 KNHC 231708
    TWOAT

    Tropical Weather Outlook
    NWS National Hurricane Center Miami FL
    100 PM EST Thu Nov 23 2017

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

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

    $$
    Forecaster Beven

  • Thu, 23 Nov 2017 17:08:23 +0000: There are no tropical cyclones at this time. - NHC Atlantic
    No tropical cyclones as of Thu, 23 Nov 2017 18:04:13 GMT

Tropical Weather Discussion

  • Thu, 23 Nov 2017 18:04:05 +0000: NHC Atlantic Tropical Weather Discussion - NHC Tropical Weather Discussion (Atlantic)

    000
    AXNT20 KNHC 231803
    TWDAT

    Tropical Weather Discussion
    NWS National Hurricane Center Miami FL
    103 PM EST Thu Nov 23 2017

    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 1200 UTC surface analysis and satellite imagery through
    1745 UTC.

    ...SPECIAL FEATURES...

    A 1011 mb low is centered near 28N83W with a cold front extending
    SW from the low to the NW tip of the Yucatan peninsula then to
    the Bay of Campeche near 19N91W. Strong to gale force
    northwesterly winds are occurring S of 20N W of 94W and expected
    to persist through early this evening. Thereafter winds will
    diminish slightly and remain generally fresh to strong across the
    basin west of the cold front through tonight as the low moves NE
    into the SW North Atlc region. See the latest NWS High Seas
    Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for more
    details.

    A 1008 mb low is centered near 31N64W with the associated cold
    front extending S-SW to near 27N67W. The existing pressure
    gradient remains strong within the NE and E quadrants of the low
    generating near gale to gale force S-SW winds N of 30N between 60W
    and 62W. These conditions will persist through tonight. See the
    latest NWS High Seas Forecast under AWIPS/WMO headers
    MIAHSFAT2/FZNT02 KNHC for more details.

    ...ITCZ/MONSOON TROUGH...

    The monsoon trough extends from the African coast near 10N14W to
    06N23W. The Intertropical Convergence Zone extends from 06N23W to
    06N40W to 07N53W. A surface trough is analyzed W of the ITCZ from
    13N54W to 06N58W. Scattered heavy showers and isolated tstms are from
    01N-10N E of 39W.

    ...DISCUSSION...

    GULF OF MEXICO...

    An elongated middle to upper level trough extends from the Great
    Lakes SW across Alabama to a base beyond the Bay of Campeche.
    This troughing supports the Special Features low analyzed across
    the NE Gulf and resulting strong to gale force winds west of the
    front in the SW basin. The low will be quick to move NE into the
    SW North Atlc region tonight as the front continues across the
    Florida peninsula and SE Gulf waters, clearing east of the basin
    by Saturday. Until then, northerly winds are expected as high
    pressure will influence much of the basin through the weekend.

    CARIBBEAN SEA...

    A surface trough extends from central Cuba near 22N80W to 16N82W
    to Costa Rica coastal waters near 09N83W with isolated showers
    and tstms within 120 nm either side of the trough axis N of 14N.
    The eastern extension of the monsoon trough and diffluence aloft
    enhance this convection to scattered moderate with embedded tstms
    S of 14N between 74W and 83W. Another surface trough is across the
    the NE Caribbean extending from 19N64W SE to the Windward Islands
    near 14N61W. This trough is underneath an upper ridge that covers
    the central and eastern basin. Shallow moisture in that region of
    the Caribbean may allow for the development of isolated showers in
    the vicinity of the boundary. Otherwise, mainly gentle to
    moderate trades are occurring E of 80W. Little change is expected
    through Sunday night.

    ...HISPANIOLA...

    Clear skies and fair weather reign across the Island underneath a
    middle to upper level ridge and very dry conditions aloft. These
    conditions will deteriorate Friday night as the surface trough
    currently over the NE Caribbean moves west across the Island
    supporting the development of isolated to scattered showers during
    the weekend.

    ATLANTIC OCEAN...

    A warm front extends from 31N78W SW to a 1011 mb low in the NE
    Gulf of Mexico and supports scattered heavy showers and tstms over
    the far NW waters of the basin N of 27N W of 77W. A surface trough
    traversing central Cuba support similar convection in the Great
    Bahama Bank between 77W and 80W. A cold front enters the SW North
    Atlc region near 31N64W and extends to 27N67W. While the front
    remains relatively benign... the SW North Atlc 1008 mb Special
    Feature low centered near 31N64W is supported aloft by a mid-level
    shortwave and continues to generate scattered showers N of 25N
    between 56W-62W. Farther east, a weakening cold front slices
    across northern portions of the discussion area from 30N30W W-SW
    to 27N40W to 27N46W where it becomes stationary along to 57W.
    Lastly, a weak 1013 mb low is centered near 19N45W with a surface
    trough analyzed SW from the low to 17N49W.

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

    $$
    Ramos

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