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

Wei Shi - NOAA Federal wei.shi at noaa.gov
Mon Aug 7 16:09:49 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:*

Weekly total rainfall was above-average over many places in West and
Central Africa. Above-average rainfall was also observed over portions of
Sudan and Ethiopia.

Week-1 outlooks call for an increased chance for above-average rainfall
over parts of Guinea, Southern Mali, Burkina Faso, northern Benin, parts of
Nigeria, eastern South Sudan and western Ethiopia. In contrast, there is an
increased chance for below-average rainfall over eastern Liberia, and
portions of Cote d’Ivoire and Ghana.

*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, overall,  below normal
rainfall situation is noted over central and peninsular India, north
central China, and southern parts of Japan. Elsewhere, the rainfall is
mostly above normal to normal.

In this past week, the observed rainfall amounts has been notably deficient
over large area of west central India and interior east central China,
Koreas, and Japan. The India Met. Dept, (IMD) is reporting that the
monsoon, so far since the beginning of June, is about 3% below the long
term mean for India as a whole. As of this writing tropical storm Noru is
about to make a landfall in Japan, and bring a lot of rain there, where
rainfall has been deficient.  In the next couple of weeks the NCEP GFS
model continues to predict below normal rainfall over most of central and
north central India.

*North American Monsoons:*

Above-average rainfall has been observed over much of northwestern Mexico
during the past week.

Rainfall accumulations over the past 30 days were above-average for much of
Arizona and northwestern Mexico and below-average for much of southern
Mexico as well as the west coast of Mexico.

NCEP/GFS Forecasts call for above-average precipitation for much of
northern Mexico during 07– 13 August 2017 and near-average rainfall for
southwestern US for the next two weeks.

*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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