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Failure of Deyr rains in October in most parts of the country

  • Seasonal Monitor
  • Somalia
  • November 3, 2016
Failure of Deyr rains in October in most parts of the country

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    Little to no Deyr rainfall was received throughout Somalia in the last 10 days of October. Similarly, only light rains were received in isolated areas of the country in early October. Deyr rainfall has largely failed in October. As a result, large parts of the country remain atypically dry (Figure 1).  In the past ten days, light rains of 1-25 millimeters (mm) were reported in localized areas of Sanaag Region and small pocks of South Central Somalia, but had little impact on rangeland conditions. Isolated areas of southern Somalia received up to 50 mm of rainfall. During this reporting period, most areas of Somalia experienced a rainfall deficit between 10 and 50 mm compared to the 2001-to-2010 short-term mean (STM). 


    In the Northwest, little to no rainfall was received. The dryness is typical in Awdal and Woqooyi Galbeed Regions, which do not receive Deyr rainfall. However, in the rest of the Northwest that usually receives Deyr rains, conditions remain atypically dry. Light rainfall was reported in Lasqoray and Erigabo Districts of East Golis livelihood zone and Erigabo and Elafweyn Districts of Northern Inland Pastoral livelihood zone. The rangeland conditions are very poor in Sool and Sanaag Regions. Livestock body conditions and productivity are significantly below average in these areas.  

    In the Northeast, most livelihood zones similarly remain atypically dry. A few areas of Coastal Deeh and Hawd Pastoral Livelihood zones in Nugaal and North Mudug received light and localized showers, but rainfall was insufficient to improve rangeland conditions. As a result, atypical livestock migration was reported from Northern Inland Pastoral and Addun Pastoral livelihood zones toward Burtinle and Garowe Districts of Nugaal Region and areas bordering Ethiopia.

    In central regions, most livelihood zones in Galgaduud and South Mudug Regions received little or no rainfall during the reporting period. Only localized showers with little to no impact were reported in pockets of Coastal Deeh, Hawd Pastoral, and Addun Pastoral livelihood zones. Water and pasture conditions throughout these areas continue to deteriorate as result of the prolonged dry conditions.

    In the South, most livelihood zones remained atypically dry. Below-average amounts of rainfall were reported in localized areas of Hiiraan, Bakool, Bay, Gedo, Lower and Middle Shabelle, and Lower and Middle Juba Regions. Rain gauge stations in Bay Region recorded 18 mm in Dinsor District and 70 mm in Qansahdhere District over a period of 1-4 days. In Bakool, 65 mm and 38 mm were recorded for Hudur District and Ceel Barde District, respectively, for a period of 4-6 days. No river flooding has been observed during the reporting period. The poor Deyr rainfall performance has severely impacted crop germination and current standing crops in most rainfed areas are suffering from moisture stress. Furthermore, atypical livestock migration has taken place toward Kenya, particularly from Gedo and Lower Juba Regions. 

    The satellite-derived eMODIS Normalized Difference Vegetation Index (NDVI) shows significantly deteriorating vegetation conditions in large parts of the South and localized areas of central and northern Somalia (Figure 3), as poorly performing Deyr rains have been insufficient to regenerate pasture or water resources. The seven-day rainfall forecast from the National Oceanic and Atmospheric Association’s Climate Prediction Center (NOAA/CPC) forecast 10-30 mm of rainfall in most parts of the South and parts of Central Somalia from November 2-7 (Figure 4). The forecast suggests that coastal areas of Shabelle and Juba Regions, parts of Gedo, and all livelihood zones in the Northeast and Northwest will likely remain dry.

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    About this Report

    FEWS NET publishes a Seasonal Monitor for Somalia every 10 days (dekad) through the end of the current October to December Deyr rainy season. The purpose of this document is to provide updated information on the progress of the Deyr season to facilitate contingency and response planning. This Somalia Seasonal Monitor is valid through October 31, 2016 and is produced in collaboration with U.S. Geological Survey (USGS), the Food Security and Nutrition Analysis Unit (FSNAU) Somalia, the Somali Water and Land Information System (SWALIM), a number of other agencies, and several Somali non-governmental organizations (NGOs).


    Figure 1

    Estimated rainfall (RFE2) in millimeters (mm), October 21-31, 2016

    Source: USGS/FEWS NET

    October 21-31, 2016 rainfall anomaly (RFE2) in mm from 2005-to-2009 mean

    Figure 2

    October 21-31, 2016 rainfall anomaly (RFE2) in mm from 2005-to-2009 mean

    Source: USGS/FEWS NET

    eMODIS Normalized Difference Vegetation Index (NDVI) anomaly from 2001-2010 mean, October 21-31, 2016

    Figure 3

    eMODIS Normalized Difference Vegetation Index (NDVI) anomaly from 2001-2010 mean, October 21-31, 2016

    Source: USGS/FEWS NET

    Figure 4

    Global Forecast System (GFS) rainfall forecast in mm for November 2-7, 2016

    Source: NOAA/CPC

    FEWS NET’s Seasonal Monitor reports are produced for Central America and the Caribbean, West Africa, East Africa, Central Asia, and Somalia every 10-to-30 days during the region’s respective rainy season(s). Seasonal Monitors report updates on weather events (e.g., rainfall patterns) and associated impacts on ground conditions (e.g., cropping conditions, pasture and water availability), as well as the short-term rainfall forecast. Find more remote sensing information here.

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