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

Wei Shi - NOAA Federal wei.shi at noaa.gov
Mon Aug 28 14:55:32 UTC 2017


The weekly PowerPoint presentations summarizing the recent variability of
the global monsoon systems have been updated on the CPC Global Monsoons
website:
http://www.cpc.ncep.noaa.gov/products/Global_Monsoons/Global-Monsoon.shtml

*HIGHLIGHTS:*



*African Monsoons:*



Weekly rainfall surpluses exceeded 100mm over parts of Senegal, Guinea and
Nigeria.



Week-1 outlooks call for an increased chance for below-average rainfall
across southern Mauritania, Senegal, Gambia, Guinea-Bissau, northern
Guinea-Conakry, portions of Mali, northern Cote d’Ivoire, Burkina Faso,
northern Ghana, northern Togo and northern Benin. In contrast, there is an
increased chance for above-average rainfall over eastern Nigeria, northern
Cameroon, southern Chad, northern CAR, eastern Sudan, parts of South Sudan,
portions of Eritrea and western Ethiopia.





*Asian-Australian Monsoons:*



For the past 90 days, below normal rainfall deficits remain in general over
parts of central and coastal southwestern peninsular India, east central
China, Koreas, Japan, Papua New Guinea, and large parts of Australia.
Elsewhere the monsoon rainfall is at normal to excess levels. For the past
30 days,  much below normal rainfall deficits are noted over central India
and in Papua New Guinea. Elsewhere the rainfall amounts are normal to above
normal.



In this past week, the observed rainfall amounts has been deficient over
east central India, and coastal southeastern  China. The India Met. Dept,
(IMD) is reporting that the summer monsoon (JJAS), so far since the
beginning of June, is about 5% below the long term mean for India as a
whole. 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 predicts below
normal rainfall along the Gangetic plains in northern India in the first
weeks, and normal to above normal rainfall amounts everywhere in the second
week.





*North American Monsoons:*



Near-average (below-average) rainfall has been observed over southwestern
U.S. (central Mexico) during the past week.



Rainfall accumulations over the past 30 days were below-average for Arizona
and northwestern Mexico.



NCEP/GFS Forecasts call for near-average precipitation for southwestern
U.S. 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
Meteorologist
Climate Prediction Center/NCEP/NWS/NOAA
NCWCP  Room 3116
5830 University Research Court
College Park, MD 20740
USA
Phone: (301) 683-3440
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