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Somalia Rainfall Forecast - Issued 04 may 2018

Enhanced rains are foreseen in the coming week in many parts of the country with Bay and Bakool regions in the south expected to record the highest amounts of rainfall. The Ethiopian highlands will also continue to receive good rains during the period in forecast. The foreseen moderate to heavy rains are likely to exacerbate ground conditions, and trigger additional floods. Built up and low Lying areas of Bay and Bakool will experience flash floods while river flooding along the Juba and Shabelle Rivers will continue.

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Rainfall Forecast

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Somalia Rainfall Forecast 16-04-2018

Moderate to heavy rains have been received in many parts of the country over the last two days. Flash floods have been reported in many places including Bakool, Hiraan and Middle Shabelle regions. The rainfall forecast for the coming week is pointing towards moderate to heavy rains. Low lying areas and built up areas may experience flash floods during the week. River levels along the Juba and Shabelle are expected to continue rising. There is a high risk of flooding in Middle and Lower Shabelle regions following the dramatic river level increase in he last 48 hours. No flooding risk is foreseen along the Juba River during the period under review.

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Somalia Flood Watch Bulletin - Issued: 18 April 2018

During the week ending on 17 April 2018, the Juba and Shabelle basins in Somalia and in the Ethiopian highlands continued to receive moderate to heavy rains. Following the heavy rains, flash floods were reported in many places within the two basins leading to displacements, inundation of croplands and destruction of property. The table below shows the total rainfall amounts recorded in selected stations within the two basins over the last one week. Map 1 shows the total Satellite Rainfall Estimates (RFE) of last week which shows moderate to heavy rains within the basins. Middle and Lower Juba regions received the highest amounts of rainfall of more than 100mm in total over the week. Map 2 shows the rainfall forecast for coming week valid until 24 April 2018 and is calling for more rains in the basins. Following the good rains river levels along the Juba and Shabelle rivers continued to rise reaching the high flood risk levels in the upper and mid sections of the two rivers. Given the rainfall forecast and the high river levels, there is a high risk of flooding in the middle and lower reaches of the Juba and Shabelle rivers with some sections having experienced overbank river flow due to weak river embankments and open river breakages. Flash floods in built up and low lying areas within the basins cannot be ruled out during the period under review

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Flood watch bulletin

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Status of River Breakages Along Shabelle Rivers as at Feb 2018

The Gu 2018 (April to June) rainfall forecast points towards near-normal to below-normal rains within the Juba and Shabelle River basin. However, flooding along the two rivers is likely to occur, especially in areas with open river banks/weak river embankments. FAO SWALIM (Somalia Water and Land Information Management) has updated the status of the river breakages along the Shabelle River and is in the process of updating the Juba by mapping them using available Very High Resolution (VHR) satellite imagery and a Digital Elevation Model (DEM); supported by “ground truthing” field observations where feasible. All the observations reported refers to the latest suitable VHR satellite image available, which is indicated in the online database. Four types of breakages have been identified, namely; open, potential, closed with sandbags and closed. The open breakages are those that are still open as observed on the latest VHR image available, therefore field verification is needed before planning any repair. The potential breakages represent points that have weak river embankments. The closed with sandbags points are defined here as those that been temporarily closed with sandbags making them still vulnerable for further breakages. The closed points are those that were previously open but have since been closed using heavy machinery or other methods, which prevents further flooding in the short term. The attached map show the open, potential and closed with sandbags points along the Shabelle River. In summary, 27 open points were identified long the river. Several other points, which are either potential or temporarily closed with sandbags, have been identified. The methodology is biased towards Remote Sensing (RS) interpretation with only limited “ground truthing” due to access constraints. Open breakages might have been omitted in some cases where satellite images may not have been very clear (e.g. heavy cloud cover) or were not available. Maps of the status of river breakages, with detailed information, have been produced at large scale and can be obtained from SWALIM offices. This information is also available on the SWALIM Flood Risk and Response Management Information System portal.

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Technical report

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Status of River Breakages Along Juba River as at March 2018

As part of flood preparedness and contingency planning, the FAO Somalia Water and Land Information Management project (SWALIM) has finalized mapping of river breakages along the Juba River using Very High Resolution (VHR) satellite images. The middle and lower parts of the river are most vulnerable to flooding. Three types of breakages have been identified namely; open (37), potential (191) and closed with sand bags (21). The open breakages are those that were still open during the period of investigation. The potential breakages represent points that have very weak river embankment or have experienced several breakages in the recent past. The closed with sand bags breakages are those that were previously open but efforts have been made to close them although they are still at risk. The open river breakages pose an immediate danger and high risk of flooding.

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Somalia Rainfall Forecast 13-03-2018

While the Gu season is yet to start in Somalia, light to moderate rains were reported in parts of Somaliland since the last week of February and first week of March. The upper parts of the Ethiopian highlands also recorded moderate rains during the last two weeks which led to slight increase of river levels along the Juba and Shabelle Rivers inside Somalia. Light rains are foreseen in a few pockets of Bay and Bakool regions as well as western parts of Somaliland and the Ethiopian highlands in the coming three days (Map 1). The rains are then expected to intensify in space and quantity towards the end of the week (Map 2). Given the rainfall forecast, the river levels are expected to rise with no risk of flooding. Users are advised that this is a forecast and at times there may be discrepancies between forecast and actual amounts of rainfall received.

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Rainfall Forecast

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Somalia Rainfall Forecast 28-03-2018

The last few days saw light rains in some parts of northern and southern regions in the country. The three days rainfall forecast is pointing towards minimal rains with light showers expected in a few pockets of Sool, Gedo, Middle Juba and the southern coastal areas. The seven days rainfall forecast indicates increased rains both in the Ethiopian highland and southern regions of the country as the week progresses. Given the rainfall forecast, the river levels are expected to continue rising gradually in the coming week with no risk of flooding along the Juba and Shabelle Rivers in Somalia.

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Rainfall Forecast

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Somalia Rainfall Forecast 16-03-2018

Most areas across Somalia remained dry over the last three days, apart from light rains reported in few pockets in Somaliland, and light to moderate rains in parts of Bay region. On 14 March areas surrounding Baidoa town reported some rainfall, while in Buur Hakaba 21mm of rain was recorded same day. The upper parts of the Ethiopian highlands continued to receive light to moderate rains over the last week. Minimal rainfall events are foreseen across Somalia in the coming three days (Map 1); while moderate to high rains are expected in parts of Bay, Bakool and Gedo Regions towards the end of the coming week (Map 2). Given the rainfall forecast, the river levels are expected to remain stable over the coming week with no risk of flooding.

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Rainfall Forecast

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Somalia Rainfall Forecast 04-04-2018

The last few days saw increased rainfall activities in some parts of northern and southern regions of Somalia. The three days rainfall forecast points towards moderate rainfall in parts of Togdheer, W. Galbeed, Middle Juba and Gedo regions with light showers in a few pockets across the country. The seven days rainfall forecast indicates increased rains both in the Ethiopian highland and across Somalia as the week progresses. Given the rainfall forecast, the river levels are expected to continue rising gradually in the coming week with no risk of flooding along the Juba and Shabelle Rivers in Somalia. Users are advised that this is a forecast and at times there may be discrepancies between forecast and actual amounts of rainfall received.

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Somalia Rainfall Forecast 21-03-2018

The Gu rainy season occurs in the period between March and June and is marked as the primary cropping season in Somalia. The season starts and ends at different times throughout the country. In the areas bordering Kenya, Middle Juba, northern parts of Middle Shabelle and the northwest corner of the country, the Gu rains starts as early as the second half of March. The rains then intensify in April all over the country. The length of the season also varies across the country from year to year. Minimal rainfall events are foreseen across Somalia in the coming three days with Gedo and Bakool regions expected to record moderate rains. The rains will then spread further in the other southern regions in the course of the week with light to moderate intensity. Given the rainfall forecast, the river levels are expected to remain stable over the coming week with no risk of flooding along the Juba and Shabelle Rivers in Somalia.

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