Will the sky be clear over Southend-on-Sea on 2 August 2027?
In Southend-on-Sea the eclipse is NOT total. The Moon covers 41.6 % of the Sun at 10:00, but it never gets dark here.
How the ensemble scenarios split for 2 August
— of the scenarios give usable sky
The European model (ECMWF) forecast for the morning of 2 August starts being published on the evening of 27 July, six days before: no earlier model run reaches that hour.
The Sun will be 40.8° up — high enough that cloud overhead does resemble what blocks it.
Where this falls
Each dot is a place with its own reading. The colour is its scenarios.
Hour by hour colour = low cloud
The bar is CLEAR SKY: the fuller, the better.
Where the Sun will be, and why that changes what can block it
In Southend-on-Sea the Sun will be 40.8° above the horizon — reasonably high. Here the overhead cloud really does resemble what crosses in front of the Sun, so the low-Sun warning does not apply.
What time the model looks at, and what time the eclipse is here
Nearby, and why they read the same
Southend-on-Sea shares its model area with these 8: at this range the ensemble cannot tell them apart, so they all come out with very similar numbers.
How to read this, and where it comes from
This is how a model’s scenarios split, not a forecast. It is rebuilt every two hours.