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Joris Meys

1. If you think #valencia is out of the woods, think again. The cut-off low that pulls humid air from over the meditteranean across the mountains north of Valencia is not done yet. In the coming 2 days the @kachelmannwetter multimodel ensemble predicts up to 177 mm of extra rain in the region of #castellon .

Not only #Spain but the entire #EU will have to have a difficult conversation on how we'll prepare us for #weather #disaster amplified by #ClimateChange

A thread.

A map of spain indicating the accumulated total precipitation for the period october 31 noon to november 2nd noon. At the bottom you see the colorscale ranging from white over blue to green, orange, red, purple and grey. On the map you see a streak of blue indicating 1 to 10 mm of rain from the south tip of spain and along the border with Portugal. Right above Valencia there's a zone where the color goes in concentric circles from blue on the outside to purple on the inside. It also shows a maximum estimated rainfall of 177 mm in the mountains north of Valencia right next to the coast.
31 October at 12:04 | Open on mstdn.social
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Joris Meys

2. Not just the past days, but the whole summer the temperatures in the Mediterranean were warmer than average. Due to the extra evaporation, this gives a bunch of humid air hanging around above the mediterranean.

You can find the temperature anomalies for the Mediterranean Sea on this website : ceam.es/ceamet/SST/SST-anomaly

A map showing the daily anomaly in sea surface temperatures for the Mediterranean for october 29th, 2024. Below is a colorscale going from darkblue over white to darkred, indicating an anomaly between -8 and +8 degrees celsius. On the map you see that almost the entire mediterranean is lightyellow to dark orange, indicating an anomaly of +1 to almost +3 degrees. Only to the east of the street of gibraltar there's a small colder zone with an anomaly if -1 degree.
31 October at 12:11 | Open on mstdn.social
Joris Meys

3. A low pressure area is circling in front of the coast of Portugal, and that circulation drags all this moist air over the mountains surrounding Valencia. In the satellite images you can see a plume of very cold and wet air rise right above Valencia. This is caused by the wet mass of air above the mediterranean that is dragged over the mountains by the circulation west of Portugal. Quickly rising air cools down, and this causes the intense rains.

31 October at 12:18 | Open on mstdn.social
Androcat

@JorisMeys @kachelmannwetter

Step one: Ban all right-wing parties.

31 October at 16:13 | Open on toot.cat
Nicole Parsons
Nicole Parsons
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