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Somalia Rainfall Forecast – Issued 21 March 2024
This week marks the equinox; a period of the year during which the Earth’s axis is tilted neither towards the north nor south resulting in a “nearly” equal amount of daylight and darkness at all latitudes. The apparent position of the overhead Sun is expected to be generally over the celestial equator, which cuts through the country over Lower Juba region from Alabakuus in Jamaame district to Jana Cabdalle in Afmadow district, today 20th March 2024. Therefore, today and for several days afterwards, the length of day will range from about 12 hours and six and one-half minutes at the equator and the surrounding areas over Lower Juba region.
Based on NOAA-NCEP GFS, dry weather conditions are expected throughout the country particularly between 20th and 22nd March 2024. The weekly forecast indicates likelihood of moderate rains over the Awdal, Woqooyi Galbeed and Lower Juba regions in between 22nd and 26th March 2024 (Figure 1). The cloudiness and rains in the northern parts of the country are likely to be mediated by the north easterly winds ascending the east-west oriented elevations. While patches of clouds and isolated rains are likely over the elevated areas in Sanaag and Bari, the intensity of the rains over Awdal and Woqooyi Galbeed on the windward sides of the Harage Highlands across the Ethiopian border.
The forecast rains in the southwestern parts of the country are likely to be driven by the arrival of the Inter Tropical Convergence Zone (ITCZ) and therefore signal the onset of Gu rains. This week may therefore mark the end of dry conditions which was attributed to reduced moisture influx due to the delays in the northward movement of rain-bearing ITCZ because of the lower-level cyclonic circulation associated with tropical cyclone Filipo in the Mozambique channel. Moderate rains are therefore likely over the southwestern parts of Somalia during the first week of April 2024.
As a demonstration of the intense insolation associated with the present position of the overhead Sun, elevated temperatures of above 40°C are expected over southwestern parts of Somalia. While such is associated with thermal discomfort, it is the lifting of this hot and moist airmass that will precipitate into the rains in the coming days. Most parts of the country are likely to observe generally warm conditions of between 30°C and 40°C with only elevated areas in Ceerigaabo and areas in the northern coastal strip recording less than 30°C.
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Rainfall Forecast
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Somalia Rainfall Forecast – Issued 28 March 2024
This forecast period marks the transition from the tail-end of Jilal to the forecast Gu season onset. Based on NOAA-NCEP Global Forecasting System (GFS), moderate to heavy rains are expected over most parts of Somaliland, Jubaland, South West, Hirshabelle, and Galgaduud with dry conditions likely to continue over most parts of Puntland. The cloudiness and rains in the northern parts of the country are likely to be mediated by the north easterly winds ascending the east-west oriented elevations. While patches of clouds and isolated rains are likely over the elevated areas in Sanaag and Bari, the intensity of the rains over Awdal and Woqooyi Galbeed on the windward sides of the Harage Highlands across the Ethiopian border. The forecast rains in the southwestern parts of the country are likely to be driven by the arrival of the Inter Tropical Convergence Zone (ITCZ) and therefore signal the onset of Gu rains.
The temporal and spatial distribution of the forecast rainfall (Map 1) are as follows:
Heavy cumulative rainfall between 100 mm and 150 mm is forecast over western parts of Badhaadhe district and central parts of Kismaayo district in Lower Juba region, central areas of Bardheere district and northern areas of Luuq district in Gedo region, central areas of Belet Weyne district in Hiraan region, eastern parts of Dhuusamareeb district in Galgaduud region and eastern parts of Burco district in Togdheer region. The rains over isolated places in these areas particularly Badhaadhe in Lower Juba, Bardheere and Luuq districts in Gedo region and Dhuusamareeb district in Galgaduud region are likely to be more intense leading up to more than 150 mm. As the week progresses the very heavy rains over Bardheere district in Gedo region are likely to sum up to more than 200 mm. It is noteworthy that such rains are likely to fall within the in-country catchments of both Juba and Shabelle Rivers.
Moderate cumulative rainfall of between 50 m and 100 mm is expected over most places in the following areas: Badhaadhe, Kismaayo and Jamaame districts in Lower Juba region, Bardheere and Luuq districts in Gedo region, Belet Weyne district in Hiraan region, Dhuusamareeb district in Galgaduud region, Burco district in Togdheer region, Gebiley district and western parts of Hargeisa district in Woqooyi Galbeed region, Baki and Borama districts in Awdal region. Moderate rains are also likely over Jilib district in Middle Juba region, Garbahaarey district in Gedo region, Qansax Dheere district in Bay region, Tayeeglow district in Bakool region, Bulo Burte district in Hiraan region, Sheikh district in Togdheer, Berbera district in Woqooyi Galbeed region, and Ceerigaabo district in Sanaag region. The rains in the northern parts of the country particularly those over the northern border between Gebiley and Hargeisa districts are likely to be observed earlier between 27th and 29th March 2024.
Light cumulative rainfall of less than 50 mm is forecast over most of the other places in Awdal, Woqooyi Galbeed, Togdheer, Lower Juba, Gedo, Bay, Bakool, Middle Juba, Lower Shabelle, Middle Shabelle, Hiraan, and Galgaduud regions. Light rainfall is also likely over most parts of central and northern parts of Ceerigaabo district in Sanaag region and a few places in Bosasso and Qandala districts in Bari region. It is important to point out that the rains over the upper catchments of both Juba and Shabelle Rivers will be light to moderate in intensity.
Dry conditions are likely to prevail over vast areas in Mudug region, Nugaal region, Sool region and Bari region. Dry conditions are also expected over a few places in the following areas: Ceel Afweyn and Laasqoray distrcist in Sanaag region, Cabudwaaq and Ceel Dheer districts in Galgaduud, Balcad district in Middle Shabelle, Qoryooley, Sablaale and Baraawe districts in Lower Shabelle, eastern parts of Bu’aale district in Middle Jubas, northern parts of Afmadow district in Lower Juba region.
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Rainfall Forecast
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Review of Deyr 2023 Rainfall Performance, Jilal Status, Gu Outlook, and Implications on Livelihoods over Somalia
Several key findings have been obtained following a review of the 2023 Deyr (October-November-December) seasonal rainfall.
Heavy cumulative rainfall was observed over the south and central parts of the country with a substantial 1,152 mm being recorded in Baidoa in Bay region representing five times of the station’s Long-Term Mean (LTM). The rainfall was even much heavier in Berbera in Wooqoyi Galbeed Region where the amount was 26 times the LTM.
The Deyr rains began in early October over parts of Somaliland and central parts of Puntland spreading southwards to Gedo and Bay-Bakool regions. However, there was a sharp end to the Deyr rains particularly over Puntland and Somaliland with no single rainy day observed in Puntland in December.
There was more than 30 consecutive dry days in almost all the stations in the country between 1st October and 31st December 2023.
The observed rainfall amounts, and the length of wet spells particularly over the Juba and Shabelle River basins within the country were 100% in agreement with the forecast. The onset of Deyr rains across the country was also generally in agreement with the forecast with most of the stations realizing onset within a week of the forecast date.
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Rainfall Outlook
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Weekly Weather Forecast for SIRA II Project Districts Somaliland - Issued 01-12-2023
Weather Forecast for the Period 1st to 7th December 2023
Rainfall Forecast: Light rainfall ranging between 2 to 5 mm is expected in the northeastern parts of the project area. This encompasses the western regions of Berbera district, Banmadar and Cabdi Geeddi in the eastern regions of the Baki district, as well as Beeyo Liiban in the eastern parts of Lughaye district and Ceel Lay Heelay in the northern part of Hargeisa district. Conversely, dry conditions are expected to persist across the remaining project areas, with the likelihood of rainfall less than 2 mm.
Temperature Forecast: Mild temperatures between 20°C and 25°C are expected in the southern parts of Borama and Gebiley districts, as well as the southwest of Hargeisa district. Northern parts of Lughaye district are expected to experience relatively higher temperatures ranging from 30°C to 35°C.
For the rest of the project area, moderate temperatures between 25°C and 30°C is expected.
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Rainfall Forecast
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Somalia Rainfall Forecast – Issued 06 December 2023
Dry conditions: Most parts of the country are expected to remain dry during the coming week. The model predictions for the month of December indicating minimal rainfall amounts across the country and the Ethiopian highlands signals the end of the Deyr rainy season for Somalia.
Temperature Forecast: The current forecast indicates likelihood of high temperatures ranging from 30°C to 35°C over extensive areas in the south, central and northeastern parts of the country. Milder temperatures ranging between 20°C and 25°C are anticipated over some areas in the following regions: Awdal, Woqooyi Galbeed, Togdheer and Sanaag regions and inland parts of Bari region. Moderate temperatures of 25°C to 30°C are anticipated in the rest of the country.
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Rainfall Forecast
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Somalia Rainfall Forecast – Issued 13 December 2023
Light rainfall of below 50 mm is forecast over some areas in the southern parts of the country in the coming week. These light rains are expected in the earlier part of the forecast week (13th – 15th December) over Badhaadhe, Kismayo and Jamaame districts in Lower Juba region, Ceel Waaq and Belet Xaawo districts in the Gedo region. Other areas expected to receive the light rains are the coastal areas of Jilib district in Middle Juba region, Marca and Kurtunwaarey districts, areas in the Sablaale, Qoryooley, and Barawe districts in Lower Shabelle region, and Baidoa in Bay region. Although moderate in cumulative amounts, the rains over the Lower Juba region are likely to be spread out across the entire week and will therefore be less intense. Moderate rains above 50 mm may be observed in some areas along the southern coastal strip whenever the monsoonal winds blowing parallel to the coastline are accentuated by any elevated East-West oriented terrain. As these monsoonal winds blow southwards across the Gulf, there are also chances of trace amounts of rains over the northern coastal strip including Caluula and Qandala districts in Bari region and Berbera districts in Woqooyi Galbeed region.
Dry conditions – The rest of the country is expected to remain dry during the coming week. The model predictions of minimal rainfall amount across the country and the Ethiopian highlands in the month of December signals the end of the Deyr rainy season for Somalia.
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Rainfall Forecast
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Somalia Flood Advisory for Juba and Shabelle Rivers - Issued 13 November 2023
Juba River
For more than a week now, run off from moderate to heavy rains have caused the water levels along the entire Juba River to overflow their riverbanks causing devastating floods which have led to damage to crop lands and road infrastructure rendering them impassable and cutting off access in to and out of towns and other human settlements. The rains over Bardheere have been particularly intense with up to 126 mm having been observed in the last two days. The 46-year old steel bridge at Bardheere was overtopped and eventually gave in to the floods and collapsed.
The runoff from both ongoing and forecast moderate to heavy rains over the Juba River catchment will sustain the river overflows and flooding at Dollow and Luuq and worsen the flooding at Bardheere and downstream reaches.
There is therefore SUSTAINED FLOODING along the entire Juba River with INCREASING MAGNITUDE at both Bardheere and downstream at Saakow and Bualle. The activated evacuation plans should therefore be sustained and along the entire stretch and upscaled at Bardheere and downstream.
Shabelle River
For about two weeks now, the water levels along the Shabelle River have been steadily increasing. On Saturday 11th Nov, arrival of the earlier projected floodwave from the Ethioipian Higlands led to a sharp rise in the water level at Beletweyne to bankful level (8.30 m). The subsequent riverbank overflow led to massive floods covering up top 90 % of the town only sparing the few elevated areas. The flow over the main bridge cut the town into two parts. Based on timely advisories from SWALIM, SoDMA/MoHADM and other partners, the population had been safely evacuated to designated higher grounds by the time the floods started. Subsequent voluminous inflows have led to further spread of the floodwaters as reported today. Floods have also been observed at Balcad as a result of river breakages. The river level at Bulo Burte is steadily rising, and now only 36 cm below the high flood risk level and 126 cm below bankful. At Jowhar the level is only 65 cm below moderate risk level.
The runoff from the ongoing and forecast moderate rains over the Shabelle River catchment upstream in Ethiopia and near the Somalia border will sustain the current bankful water levels at Beletweyne. Additionally, voluminous water measuring up to 9 km can be identified on the current satellite images upstream of Beletweyne in Ethiopia. There is a high likelihood that the arrival of this flood wave will lead to further significant river level rise and flooding at Beletweyne in the coming days. The run off from the forecast very heavy rains over the Shabelle River catchment on the eastern parts of Bulo Burte in the coming week will add to the downstream flow of the flood wave currently at from Beletwyene leading to rise in river levels at Bulo Burte, Jalalaqsi and Jowhar to high flood risk levels then bankful levels. Flash floods are also expected in Bulo Burti and surrounding areas following the very heavy rainfall expected over the next 3 days.
There is therefore ONGOING FLOODING WITH INCREASING MAGNITUDE at BeletWeyne and its environs and ONGOING FLOODING WITH MODERATE MAGNITUDE at Balcad and its environs and HIGH RISK OF FLOODING at Bulo Burte and its environs and PROJECTED HIGH RISK at Jowhar and its environs. The activated evacuation plans should therefore be sustained at Beletweyne town and the surrounding areas. The evacuation plans should be activated at Bulo Burte and surrounding areas. The evacuation plans should be placed on standby at Jowhar and surrounding areas.
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Flood Alert
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Somalia Rainfall Forecast – Issued 01 November 2023
Extremely heavy rainfall is expected over Gedo, Lower Juba, Hiran, and Togdheer regions; moderate to heavy rainfall is anticipated over several other parts except for Bari region and coastal areas of the country where light rains is expected. A three -days forecast shows that much of these rains are likely to be received between 1st and 3rd November 2023. The spatio-temperal variation of the forecast rainfall (Map 1) is described below:
• Extremely heavy rainfall of between 150 mm and 200 mm is expected over several areas in Gedo region, Afmadow district in Lower Juba region, southern parts of Saakow district in Middle Juba region, Beletweyne and Bulo Burte districts in Hiraan region, southern parts of Togdheer region, and Las Anod. The rains particularly over Gedo region, northern parts of Afmadow district in Lower Juba region, southern parts of Beletweyne district and northern parts of Bulo Burte district in Hiraan region, and Buuhodle district and southern parts of Burco district in Togdheer region are likely to be very intense leading up more than 200 mm. Rains of comparable amounts is also forecast over the middle and upper catchments of both Juba and Shabelle Rivers in Ethiopian Highlands.
• Moderate to heavy rainfall of between 50 mm and 100 mm is forecast over most areas in Bakool, Bay, Saakow and Jilib districts in Middle Juba region, Cabudwaaq district in Galgaduud region, Galdogob district, eastern and southern parts of Gaalkayo district and northern parts of Hobyo district in Mudug region, and isolated areas in Lower Juba region. Towards the north, rainfall of similar amounts is also anticipated over several areas in Togdheer and Sool regions, Hargeisa district in Woqooyi Galbeed region, Ceel Afweyn district and southern parts of Ceerigaabo district in Sanaag region, Burtinle district in Nugaal region, and isolated areas in Bari region.
• Light to rainfall of below 50 mm is expected over several areas in Lower Shabelle and Middle Shabelle regions, central parts of Lower Juba region, Bualle district in middle Juba region, and Jalalaqsi district in Hiraan region. Such rains are also expected over the central parts of the country including Galgaduud region, Xarardheere district and southern parts of Hobyo district in Mudug region, Eyl and Garowe districts in Nugaal region. In the north, rains of such amounts are expected over several areas in Bari region, Laasqoray district and eastern parts of Ceerigaabo district in Sanaag region, Gebiley district and central parts of Berbera district in Woqooyi Galbeed, Baki and Lughaye districts in Awdal region.
• Dry conditions are expected over the coastal areas in both Iskushuban and Caluula districts in Bari region and the southern parts of Borama district and western parts of Zeylac district in Awdal region.
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Rainfall Forecast
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Weekly Weaher Forecast for SIRA II Project Districts Somaliland - Issued 25-11-2023
Vey light rainfall expected over the Berbera district in the northeastern parts of the project area, with dry conditions prevailing in the other areas.
Weather Review for the Period 14th to 20th November 2023
During the period under review, rainfall of at least 1 mm was observed in thirty-four (34) stations, as illustrated in Graph 1. This marks an increase from the previous week's thirteen (13) stations with recorded rainfall. Twenty stations (20) reported cumulative rainfall exceeding 30 mm. The specific stations, their respective rainfall totals and rainy days are as follows: Laas Dawaco (122 mm in 2 days), Bulohar (110 mm in 2 days), Gacan_libah (97 mm in 3 days), Malawle (75 mm in 2 days), Gargara (61 mm in 1 days), Baligubadle (59 mm in 2 days), Gerisa (58.5 mm in 2 days), Berbera (56 mm in 2 days), Hargeisa (55 mm in 2 days), Salaxley (53 mm in 2 days), Xeego (50 mm in 2 days), Garbodadar (47.5 mm in 1 days), Lughaye (46 mm in 3 days), Sayla (45 mm in 1 days), Dhubato (43.5 mm in 2 days), Cadaadley (35 mm in 1 days), Dararweyne (34.5 mm in 3 days), Geedeble (34 mm in 1 days), Zaila (34 mm in 2 days), and Taysa (33 mm in 2 days). Having been recorded on one of the days of the week under review, the rains over Bulohar (70 mm), Laas_Dawaco (68 mm), Gargara (61 mm) and Gacan_libah (56 mm) were the most intense. The best three-days rainfall distribution was achieved over Gacan_libah, (97 mm), Lughaye (46 mm) and Dararweyne (34.5 mm).
Weather Forecast for the Period 22nd to 28th November 2023
Rainfall Forecast: The weather forecast indicates very light rainfall of between 2 and 5 mm over the northeastern parts of the project area. These areas include western parts of Berbera, Banmadar and Cabdi Geeddi in the eastern part of Baki district; Ceel Lay Heelay, Bildhaaley, Bodale and Daradawanley in the northern part of Hargeisa district. Dry conditions with chances of rainfall less than 2 mm will prevail over the rest of the project areas.
Temperature Forecast: Milder temperature of 20 ℃ to 25 ℃ is expected over some areas in the south of Gebiley district and in the southwest of Hargeisa district. Comparatively higher temperature of between 30 ℃ and 35 ℃ is anticipated in Lughaye district and some areas in the northeastern parts of Baki district. Moderate temperatures of between 25 ℃ to 30 ℃ are expected to prevail over the rest of the project areas.
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Rainfall Forecast
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Somalia Rainfall Forecast – Issued 15 November 2023
In the next week heavy rainfall is expected over parts of Gedo, Bay, and Galgaduud regions, and moderate to heavy rainfall over most other parts of the country. Dry conditions with chances of isolated light rainfall are however expected in Bari region. Much of the forecast rains over Galgaduud and Bay regions are likely to be received between 15th and 17th November 2023. The spatio-temperal variation of the forecast rainfall (Map 1) is described below:
• Heavy rainfall of between 100 mm and 150 mm is expected over the western areas of Gedo Specifically in Ceel Waaq, Belet Xaawo, isolated parts of Luuq, Dollow, and Garbahaarey. Likewise, Baydhaba in Bay, along with parts of Xuddur, Tayeeglow, and Waajid bordering Bay in the Bakool region, are expected to experience similar intense rainfall. In Galgaduud, comparable weather conditions are expected, particularly over Cabudwaaq and Cadaado. Additionally, isolated areas in Hiraan and Sanaag are also likely to encounter heavy rainfall during this period. The Ethiopian highlands is also expected to receive high to moderate rainfall over the forecast period
• Moderate rainfall of between 50 mm and 100 mm is forecast over extensive areas in Gedo, Bay, Bakool, Hiraan, Galgaduud, and Mudug regions. Similar conditions are also anticipated in the northwestern regions of the country, particularly over Lughaye and Baki in Awdal, the northern areas of Gebilley, Sheikh in Togdheer, extensive parts of Woqooyi Galbeed, as well as Ceel Afweyn and Ceerigavo in the Sanaag region.
• Light rainfall of below 50 mm is expected over several areas in Lower Juba, Middle Juba, Lower Shabelle, Middle Shabelle regions, parts of Dinsor and Burhakabar in Bay region, Jalalaqsi in Hiraan region, Ceel Buur, Ceel Dheere and parts of Dhuusamarreeb in Galgaduud, extensive part of Mudug, Nuugal, Bari, Sool, Sanaag regions, Zeylac and Borama in Awdal region, Hargeisa and Southern parts of Gebilley in Woqooyi Galbeed, Burco, Buuhodle and most parts of Odweyne in Togheer, most parts of Bosasso, Qandala, Coastal parts of Callula, Isolated pasts of Iskushuban and Qardho in Bari region.
• Dry conditions are expected over isolated areas in Sanaag, Taleex, Qardo, Iskushuban, Callula, extensive parts of Bandarbeyla, northern parts of Eyl and Isolated parts of Lower Juba.
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Rainfall Forecast
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