An image of thunderstorm activity in the Ethiopian #Abbay#BlueNile basin this afternoon, also showing significant rains South #Yemen and over most of #Somalia.
Todays, 27th April, accumulated rain forecasts for the #MiddleEast & #HornOfAfrica follow in the thread below.
#ArabianStorms activity was boosted today by moisture flowing from the #Ethiopian monsoon rains in the Ethiopian Highlands, the watershed of the #Abbay#BlueNile catchment.
Below you see a 10-day GFS forecast of accumulated rain over North Africa.
This animation shows the flows of moisture from this morning across the Red Sea. A process which is called the "Southern Gate" by Saudi weather entusiasts. #ArabianStorms#Abbay#BlueNile#GERD
This process strengthened over the day, on a day which has seen an astonishing level of Storm Activity across the Kingdom of #SaudiArabia and has seen significant rainfall on the @HolyKaaba in Mecca / Makkah.
الله أكبر
The latest 10-Day accumulated rain forecasts from the ECMWF, GFS and KMA forecast models are below. They are in agreement. Lots of rain across the entire #HornOfAfrica
This animation shows the storm activity across the region from Medina to Mogadishu as the sun set over the past hour.
And our final 27th April rain forecast is an set of ultra long-range accumulated rain forecasts for the #MiddleEast from the GFS, GEFS (16 day) and KMA (12 day) weather models.
A high resolution taken today by the NASA Modis satellite of the #NileBasin and the #MiddleEast is below.
The day started with storms in the East of the #HornOfAfrica#Yemen and the #KSA and got very busy over the day.
28 April Rain forecasts follow:
This first animation shows the beginning of a plume of water coming across the Sahara from the Atlantic. Forecasts indicate water from this plume will arrive in the #MiddleEast and #HoA in 10 days time.
This animation shows the West African Monsoon and the plume of précipitable water making its away across over the Sahara over the coming week.
Here you see the beginning of this event. It is much larger than earlier iterations of the same phenomena. These streams of air-born water are roughly 4000 kms long.
This tweet and the next three contain 10-day forecasts of the trajectory of this hydrological atmospheric phenomena. They forecast precipitable water, the quantity of water which is held in the atmosphere measured in inches.