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  • Hazards/Climate Extremes

    Welcome to the NCDC Hazards/Climate Extremes Page

    Please hover your mouse over the links to the upper left, or simply scroll down the page to select and view more content from this area of the NCDC website. This is the first in a series of steps we're taking to improve our site. Should you have something specific to look for, submit a search in the golden search bar above.

    Dividing Line

    Global Focus

    Radar animation of Eagle Pass Tornado on April 24, 2007
    Texas-Mexico Tornado
    Global Hazards And Significant Events
    April 2007

    A severe thunderstorm produced a devastating tornado that affected the Texas-Mexico border on the night of April 24. Additional information can be found below.
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    Drought & Heat | Flooding | Storms | Tropical Cyclones | Extratropical Cyclones | Severe Winter Weather
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    Drought conditions
    Across the United States, extreme drought conditions were observed in areas of Wyoming and Nebraska, as well as northern Minnesota and throughout much of the Desert Southwest and the Southeast region.
    Most current Drought Monitor map
    U.S. Drought Monitor
    Africa hazards/benefits assessment map
    Africa Hazards/Benefits Assessment
    In southern Africa's Maize Triangle, stress on agriculture was the result of a prolonged period of dry, hot conditions.
    For the latest African weather impacts assessment, see the Famine Early Warning System Network.
    A six-year drought, characterized as the worst in the nation's history, continued in Australia. Australian Prime Minister John Howard warned that irrigation in much of the nation's farmland would be banned unless significant rainfall occurred during the next month. There was only enough water in the Murray-Darling river system for drinking purposes (BBC News).
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    Heavy rainfall and flooding
    Map of Tajikistan Affected Areas
    Tajikistan Affected Areas
    In the eastern region of Tajikistan, heavy rain generated flash floods and landslides during the night of April 16 affecting around 12,000 people (IFRC).
    In North Africa, heavy rainfall during the last two weeks of April produced floodings that caused at least 22 deaths (IFRC).
    Map of North Africa's Affected Areas
    North Africa's Affected Areas
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    Severe Storms
    An outbreak of severe thunderstorms including 14 reported tornadoes occurred on the 3rd in parts of the Mississppi and Tennessee River Valley region. There were at least 7 injuries reported, but no fatalities.
    Map of U.S. storm reports on April 3, 2007
    U.S. Storm Reports

    Additional severe weather and tornadoes occurred on the 28th, killing 4 people in Kansas, Oklahoma and Texas (Associated Press).
    Radar
    Texas-Mexico Severe Weather
    Severe thunderstorms moved across south central Texas producing a devastating tornado on the night of April 24 that killed 10 people along the Texas-Mexico border. The tornado destroyed two schools and damaged hundreds of homes (Associated Press).
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    Tropical Cyclones
    Tropical Cyclone Jaya developed in the southern Indian Ocean on March 30, and made landfall in northeastern Madagascar between Sambava and Antalaha on the 3rd with maximum sustained winds near 150 km/hr (80 knots or 90 mph). Jaya was the sixth tropical cyclone to impact Madagascar since December 2006.
    Satellite image of Tropical Cyclone Jaya on April 3, 2007
    Tropical Cyclone Jaya


    For 2006/2007 basin tropical cyclone statistics, please refer to the following:
    Australian Basin
    North Indian Ocean Basin
    Western North Pacific Basin
    South Pacific Basin
    South Indian Ocean Basin
    Northeast Pacific Ocean Basin
    Atlantic Basin
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    Extratropical Cyclones
    Satellite animation of a Nor'easter on April 15, 2007
    U.S. Nor'easter
    A major storm system, otherwise known as a Nor'easter, moved up the Eastern Seaboard during the 15th-17th. Strong winds produced power outages that affected hundreds of thousands from South Carolina to Maine, while heavy rainfall generated flooding in areas of the Mid-Atlantic and Northeast. Rain and wind hampered runners of the Boston Marathon, with a strong headwind causing the slowest race finish since 1977 (Reuters). New York City had its second-rainiest day ever, with 192 mm (7.57 inches) on the 15th. The record for the heaviest daily rainfall is 210 mm (8.28 inches) set on September 23, 1882 (NWS). Higher elevations of northern New York, Vermont and New Hampshire received snowfall accumulations as high as 43 cm (17 inches). A total of 17 deaths were attributed to the storm (Associated Press).
    A storm system brought strong winds to southern California, fanning brush fires and producing power outages. At least 76,000 power outages were reported in the greater Los Angeles area on the 12th (AFP).
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    Severe winter weather
    Map of Northeast U.S. snow depth on April 6, 2007
    Maine Snow Depth Map
    A late season winter storm dumped nearly a foot of snow across areas of Maine on the 5th, snarling traffic and forcing governor Jim Baldacci to declare a state of emergency after at least 275,000 homes and businesses lost power (Reuters). Portland recorded its fifth biggest snowstorm in April for a 24-hour period.
    A late-season Arctic air mass brought record cold to areas of the Midwest, Plains, Mid-Atlantic and Southeast during April 4-10. Significant damages to crops were reported, including North Carolina which had an estimated $112 million in losses. Temperatures dipped well below freezing, with many areas observing morning low temperatures as low as -6°C (21°F). Additional information can be found on the April 2007 Cold Wave page.
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    For all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services Division:

    Climate Services Division
    NOAA/National Climatic Data Center
    151 Patton Avenue, Room 120
    Asheville, NC 28801-5001
    fax: 828-271-4876
    phone: 828-271-4800
    email: ncdc.orders@noaa.gov

    For more information, refer also to ...
    Selected U.S. City and State Extremes
    2006 Atlantic Hurricanes
    2006 East Pacific Hurricanes
    2006 U.S. Wildfire Summary
    Global Historical Climatology Network (GHCN)
    The Global Temperature Anomalies
    CLIMVIS - Global Summary of the Day
    CAMS data provided by the Climate Prediction Center
    Tropical Rainfall Measuring Mission (TRMM) - NASA
    Relief Web
    Geographic Reference Maps (pdf format)
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    For further information on the historical climate perspective presented in this report, contact:

    Scott Stephens
    NOAA/National Climatic Data Center
    151 Patton Avenue
    Asheville, NC 28801-5001
    fax: 828-271-4328
    email: Scott.Stephens@noaa.gov