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    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.

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    Global Focus

    Russia Heat Wave
    Russia Heat Wave
    Global Hazards And Significant Events
    May 2007

    A record breaking heat wave affected parts of western and central Russia during May. 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, as well as northern Minnesota and throughout much of the Desert Southwest and the Southeast region. On May 29, 50% of the western U.S. was in moderate to exceptional drought, 83% in the Southeast, and 34% for the contiguous U.S., according to the Federal U.S. Drought Monitor.
    Most current Drought Monitor map
    U.S. Drought Monitor

    For complete drought analysis across the United States, please see the U.S. drought report.
    Most current Drought Monitor map
    Georgia and Florida Fires
    Extreme drought exacerbated wildfire conditions in Georgia and Florida that charred about 192,000 hectares (474,000 acres) in Georgia and 93,000 hectares (229,000 acres) in Florida, forcing hundreds of residents to evacuate the area (NIFC/BBC News).


    In China, the worst drought since 1940 was concentrated across several Chinese provinces. In the province of Gansu, 1.6 million people faced water shortages and a million of hectares of crops are damaged. Henan was reportedly the worst hit by drought, receiving 30% of expected rainfall since March (BBC News).
    China Drought Map
    China Drought Map

    India Heat Wave
    India Heat Wave
    In India, a heat wave during mid-May produced temperatures as high as 45-50°C (113-122°F) resulting in at least 128 fatalities (Reuters/BBC News). Extremely hot weather and associated fatalities are common in India during late spring preceding the climatological onset of the monsoon season in June.

    A heat wave affected areas across western and central Russia during the month of May breaking several temperature records. In Moscow, temperatures on the 28th reached 32.9°C (91.2°F), the highest temperature recorded in May since 1891 (31.8°C/89.2°F). This is the first time in 128 years that the Russian capital has suffered sustained 30°C (86°F) or higher temperatures. This heat has prompted Russia's energy administrator to restrict the use of non-residential energy for the first time in summer (BBC News/Kommersant).
    Russia Heat Wave
    Russia Heat Wave

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    Heavy rainfall and flooding
    Map of Uruguay's Affected Areas
    Uruguay's Affected Areas
    In early May, Uruguay was hit by the worst flooding since 1959. Heavy rainfall in portions of Uruguay produced floods that affected more than 110,000 people and severely damaged crops and buildings. In Durazno, heavy rainfall triggered the overflowing of the Yi River and flooded the city's water supply. A total of 30,000 people had no access to safe drinking water (OCHA).
    Along the southwest coast of Sri Lanka, landslides and flooding triggered by heavy rainfall affected more than 125,000 people and killed at least 17 on May 3-4. The flooding destroyed and damaged hundreds of homes. According to the country's Department of Meteorology, Colombo (the capital city) received about 254 mm (10 inches) of rain during those two days (IRIN).
    Map of Sri Lanka's Affected Areas
    Sri Lanka's Affected Areas

    Heavy rainfall and melting snow prompted flash floods across the northeastern region of Afghanistan, killing more than 24 people and damaging hundreds of homes (IRIN).


    Map of Colombia's Affected Areas
    Colombia's Affected Areas
    In Colombia, heavy rainfall on May 19 produced severe flooding and landslides that affected more than 600 people and caused at least 13 deaths and the destruction of many homes (OCHA).
    In China, heavy rainfall during May 24-25 affected the Sichuan and Chongqing municipalities prompting flash flooding and mudslides that killed a total of 43 people and left 12 others missing. In Chongqing, economic losses have been estimated at 73.5 million U.S. dollars (Xinhua/Reuters).
    Map of China's Affected Areas
    China's Affected Areas

    Satellite Image of Central Plains
    Central Plains Flooding
    In the United States, heavy rainfall in parts of Oklahoma and Texas during May 26-27 triggered flash floods which affected more than 1,000 people and were blamed for at least 4 deaths with 2 others missing. Areas in northern Oklahoma experienced the worst flooding in over 50 years, reporting rainfall totals of 76 mm (3 inches) in a 24-hour period (Associated Press/BBC News).

    Heavy rains caused flooding in Mombasa, Kenya during mid-May. Hundreds of families were affected by flash floods and at least 2 fatalities were reported due to heavy rains which caused the roof of a house to collapse (IRIN).

    Across Europe and Turkey, torrential rain produced flash floods and landslides that were blamed for at least 23 fatalities. In Germany rainfall accumulated to 106mm (4 inches), well over the monthly average of 85mm (3 inches) (Reuters/BBC News).

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    Severe Storms
    In the United States, severe thunderstorms produced devastating tornadoes across the Plains. The strongest tornado was reported to have occurred in Greensburg, KS, killing at least 10 people and destroying about 95% of the town. The 1.7 mile-wide tornado was on the ground for 22 miles and was the first tornado of the year to be classified with the new rating system. The tornado was rated as category EF-5 (Associated Press/USA Today News). For additional information, see the Storm Prediction Center Report. The last F5 tornado occurred in Midwest City, Oklahoma, in May 1999.
    U.S. Severe Weather Reports
    U.S. Severe Weather Report

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    Tropical Cyclones
    Subtropical storm Andrea developed off the southeastern coast of the United States on the 9th, prior to the official Atlantic hurricane season (June 1st), becoming the first named storm in May since 1981. Andrea had maximum sustained winds of 65 km/hr (35 knots or 40 mph) and weakened to a depression on the 10th (Associated Press/CNN News). Storms that occur prior to the official start of the hurricane season are not uncommon. As recently as 2003 a tropical storm developed earlier in the season when Tropical Storm Ana formed on April 22nd.
    Satellite image of Subtropical Storm Andrea on May 9, 2007
    Subtropical Storm Andrea

    Satellite image of Tropical Cyclone Akash on May 15, 2007
    Tropical Cyclone Akash
    Tropical Cyclone Akash developed in the Bay of Bengal on the 13th. The cyclone made landfall near the Bangladesh-Myanmar border on the morning of the 15th with maximum sustained winds near 120 km/hr (65 knots or 75 mph). Akash triggered a 1.2 meter (4 foot) tidal surge which affected coastal areas of Bangladesh and Myanmar. The cyclone destroyed crops, damaged hundreds of homes, and was responsible for at least one death with 100 others missing (Reuters/AccuWeather News).


    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

    No reports of significant extratropical cyclones were received during May 2007.


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    Severe winter weather
    South Africa Temperature Anomalies
    South Africa Temperature Anomalies
    A cold front that swept across South Africa led to at least 21 fatalities and 54 weather records observed in many areas on May 21-22. Most of the records were for lowest maximum and minimum daily temperatures, with some locations reaching a low minimum temperature of -6°C (21°F) while in some other locations the lowest maximum temperature was 1.7°C (35°F) (Cape Times News). For additional information, see the South African Weather Service report.
    In Argentina, at least 23 fatalities were reported as a result of cold weather during the last week of May. For several nights temperatures were below freezing which also led to electricity and natural gas shortages (Associated Press).
    Argentina Temperature Anomalies
    Argentina Temperature Anomalies

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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:

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