Discover and read the best of Twitter Threads about #westafricamonsoon
Most recents (6)
It's raining cats and dogs in the highlands northern Ethiopia tonight. Across all of Tigray and south into the #Abbay basin which is busy filling the GERD. The #ArabianMonsoonBlast is getting into gear now but it is far from over.
Today's Rainfall forecasts follow.
Today's Rainfall forecasts follow.
The Bay of Bengal and Arabian Sea are ultimately responsible for all of this and so we begin with a couple of satellite images of them today. I will post another picture of the #GERD as soon as it reveals itself from under the clouds. 
Here's a rainfall map from @Meteoblue which can be followed live at >> meteoblue.com/fr/meteo/curre….
Mekele isn't right under the rain but Aksum and Shire are. Hopefully this will slow down the warriors.
Mekele isn't right under the rain but Aksum and Shire are. Hopefully this will slow down the warriors.
The full monsoon has now arrived in the #HornOfAfrica. Very intense rain has begun in the Nile Basin and will continue for a week or more.
What will happen in the #MiddleEast is less clear, but it will involve a lot of rain and #ArabianStorms. Today's forecasts follow.
What will happen in the #MiddleEast is less clear, but it will involve a lot of rain and #ArabianStorms. Today's forecasts follow.
This animation shows the flow of rain bearing clouds heading south west across Pakistan which signals the first phase of an event which will intensify significantly over coming days.
This animation shows under wrapped in pulsating bands of storms headed both East and West. It is this intense period of Monsoon activity which is powering the phenomena that his bringing this rain to Yemen, Oman and Saudi Arabia.
A big day for #WestAfricaMonsoon observation.
A full plume event is becoming obvious in central & eastern Europe + Russia. We also have thunderstorms over the Red Sea, and a low circulation heading towards a collision with water vapour over Israel.
Today's forecasts follow.
A full plume event is becoming obvious in central & eastern Europe + Russia. We also have thunderstorms over the Red Sea, and a low circulation heading towards a collision with water vapour over Israel.
Today's forecasts follow.
Visually speaking this is the most extraordinary looking satellite observation of the day.
Now into its sixth day the #EastAfricaWaterPlume has been generating lots of rain over the Red Sea, both last night and today, & right now just off the coast of Jeddah. @Arab_Storms
Now into its sixth day the #EastAfricaWaterPlume has been generating lots of rain over the Red Sea, both last night and today, & right now just off the coast of Jeddah. @Arab_Storms
Here we see a wider view while it is not that obvious in this view, the stream of water vapour heading up the Western Sahara coast is running fast and hot. Later I will post an initial post tracking its impact in Europe. But for now its worth looking closer at North Africa.
We have another large #ArabianStorm which was not anticipated by the global weather models. And like those before it, it is fueled by the #WestAfricaMonsoon and a #WestAfricaWaterPlume. This time across the Red Sea in the vicinity of #Makkah.
Today's rainfall forecasts follow.
Today's rainfall forecasts follow.
This animation shows the current state of a weather event that has been a few days in coming. #ArabianStorms
@Arab_Storms
@Arab_Storms
The origin of this event is very similar to that which caused several days of extremely severe thunderstorms in #Oman earlier in the month. This animation is from May 18th shortly after it first appeared in the @zoom_earth satellite imagery.
There is something glorious about the images that @zoom_earth captures. I especially like the large symmetrical and fairly stationary area of cloud in the North Atlantic in this image.
Today's May 1sy Forecasts for #Ethiopia and #MiddleEast rainfall follow.
Today's May 1sy Forecasts for #Ethiopia and #MiddleEast rainfall follow.
The main action today was in Europe where the strengthening #WestAfricaMonsoon #WMA has today had a spectacular impact on European Weather.
A detailed thread covering those events can be found here.
A detailed thread covering those events can be found here.
Today's North African long range (12 day) rain forecast is taken from the Korean KMA model as it looks to be a lot closer to what we are seeing in the skies today.
I seriously think the @ECMWF West African Monsoon simulation model is simply broken. Every day the 24 hour it looks the same. Very loopy.
Here are the GZ 20.00 19.00 18.00 and 17.00 model runs for 10 days accumulated precipitation.
Here are the GZ 20.00 19.00 18.00 and 17.00 model runs for 10 days accumulated precipitation.
GFS same four runs...
KMA same four runs...
