[Ncep.list.emc.monsoondesk] Weekly Updates of Global Monsoon Systems

Wei Shi - NOAA Federal wei.shi at noaa.gov
Mon Aug 21 15:55:05 UTC 2017

The weekly PowerPoint presentations summarizing the recent variability of
the global monsoon systems have been updated on the CPC Global Monsoons


*African Monsoons:*

Below-average rainfall was observed over many places in West Africa.

Rainfall was above-average over portions of DRC, Sudan, northern Ethiopia
and Eritrea.

Week-1 outlooks call for an increased chance for above-average rainfall
over much of Senegal, Gambia, Guinea Bissau, southern Mauritania, portions
of  Mali and Burkina Faso, western Niger, and western Ethiopia, Sudan,
south Sudan, and Eritrea.

*Asian-Australian Monsoons:*

For the past 90 days, below normal rainfall deficits remain in general over
parts of central and peninsular India, east central China, Koreas, Japan,
Papua New Guinea, and large parts of Australia. During same period,
rainfall excess remain over central western and  northeastern India,
Bangladesh, Burma, and many southeast Asian countries bordering South China
Sea area including large parts of Thailand, Laos, Cambodia, Vietnam, the
Philippines and Indonesia. For the past 30 days, below normal rainfall
situation is noted over interior India in a north-south oriented pattern,
east central China and Papua New Guinea. Elsewhere, the rainfall is mostly
above normal to normal.

In this past week, the observed rainfall amount has been notably deficient
over large area of north central India, and coastal southeastern China. The
India Met. Dept, (IMD) is reporting that the monsoon, so far since the
beginning of June, is about 4% below the long term mean for India as a
whole.  In the next couple of weeks the NCEP GFS model continues to predict
below normal rainfall over most of central India and extending all the way
to southeastern China in the first week and above normal rainfall over
Gujarat and vicinity in the second week.

*North American Monsoons:*

Slightly below-average rainfall has been observed over southwestern U.S.
during the past week.

Rainfall accumulations over the past 30 days were near-average for
southwestern U.S. and above-average for much of northwestern Mexico.
Meanwhile, much of the central and southern Mexico experienced
drier-than-average conditions.

NCEP/GFS Forecasts call for below-average precipitation for southern
Arizona and above-average precipitation for northwestern Mexico during 21–
27 August 2017.

*For questions or comments, please contact:

Endalkachew.Bekele at noaa.gov (for the African monsoons)

Muthuvel.Chelliah at noaa.gov  (for Asian-Australian monsoons)

Wei.Shi at noaa.gov  (for American monsoons and for general issues about the
CPC Global Monsoons products)

Wei Shi, Ph.D
Climate Prediction Center/NCEP/NWS/NOAA
NCWCP  Room 3116
5830 University Research Court
College Park, MD 20740
Phone: (301) 683-3440
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