A Possibly Record-Breaking Heat Wave Might Hit Next Week: Explained Simply

The Shocking Warning from Weather Experts

A weather account called MeteoBadajoz recently said something scary:
"This is brutal. The main models are hinting at a possible extraordinary heat wave next week with highs of +45ºC and even other values I dare not mention."

Important Point: Bad news about the weather has been piling up lately. MeteoBadajoz also said that "for now, it’s wise to wait, but the repeated signals are such that it’s starting to be very possible." And they are probably right. Let’s see why.

Why Are We Taking This Seriously?

Spain’s official weather service (called AEMET) published a weekly forecast saying temperatures next week would be higher than normal for this time of year.

• At first, different computer weather predictions (called "models") showed very different ideas.
• But now, those differences are getting smaller.
• That means what was just a "maybe" is turning into a "very likely" scenario.

Callout: The key right now is to separate what we know from what we don’t know.

What Do We Know (and What We Don’t)?

A meteorologist named Roberto Granda explained what is already certain:

What we know:

• Temperatures of 38–40 °C will likely return to many areas.
• These numbers will "comfortably" pass the official levels that define a heat wave.

What we still don’t know:

• The exact top temperature it will reach.
• Precisely which towns or regions will be hit hardest.
• How many days the extreme heat will last.

The Two Big Computer Models Don’t Fully Agree (But Both Say "Hot!")

Weather scientists use giant computer simulations to guess future weather. The two most important ones currently disagree a little:

• The American model (GFS): Sees a widespread and very intense heat wave across the whole country.
• The European model: Thinks the extreme heat will focus on the eastern half of Spain.

Either way, it looks like the heat will catch the country right in its path.

What Could Happen If the Forecast Is True?

If the predictions hold, this extreme heat event would land on top of a summer that is already off the charts:

• It would be the third heat wave in just one month.
• The Mediterranean Sea is at 26.63 °C, which is 2.6 degrees above what’s normal.
• Last June was the second warmest since 1961.

Sadly, the heat is already harmful. According to a health monitoring system called MoMo (from the Carlos III Health Institute):

• About 1,682 deaths since May 1 might be linked to high temperatures.
• Around 500 of those happened in just five days during the second heat wave.

Wait, Didn’t They Say It Would Get Colder?

Just a week ago, social media was full of maps promising "the end of the heat." Experts (including the source of this article) said back then to take those maps with a grain of salt.

• Those maps were looking 15 days ahead, which is too far away to be a solid prediction.
• Now we have confirmation of that warning: you can’t mix up a far‑away guess with a real forecast.

What Happens Now? (Step by Step)

1. Wait for confirmation. In the next few days, the uncertain parts will clear up and we’ll get either a confirmation or a discard.
2. Watch for official alerts. In past heat waves, special warnings were issued about 4 days before the event.
3. Stay aware. Whatever happens, one thing is clear: this summer is shaping up to be really bad.

Extra Notes From the Original Report

The original article also highlighted two related reads (kept here for completeness):

• A piece explaining that extreme heat (and torrid nights) can sabotage your brain, so you shouldn’t make important decisions during a heat wave.
• A note from AEMET saying that in the Mediterranean, it no longer makes sense to talk about "tropical nights" because almost every night is one now.
• Image credit: Meteociel. Related link: a NASA map showing where Europe’s grayest skies are (originally cited as further reading).

Summary

In short, weather models are increasingly suggesting a potentially extraordinary heat wave in Spain next week, with highs possibly above 45°C. While we know it will be very hot and likely surpass official heat‑wave thresholds, we don’t yet know exact peaks, precise locations, or duration. Both American and European models predict intense heat, following a already brutal summer with record‑warm seas and tragic loss of life. Earlier "cooling" maps were misleading 15‑day guesses. We must wait a few days for official confirmation, but the overall picture is deeply worrying.

FAQ

1. What is AEMET?
AEMET is Spain’s official government agency that studies and forecasts the weather. Think of it as the country’s big, trustworthy weather diary.

2. What are "weather models" like GFS or the European one?
They are super‑complex computer programs that simulate the atmosphere using math. They try to guess if it will be sunny, rainy, or super hot. Different teams (American, European, etc.) build their own.

3. What does "model dispersion" mean in simple terms?
Imagine asking 10 friends to guess tomorrow’s temperature. If their answers are all over the place (some say 20°, some say 40°), that’s high "dispersion." If they start giving similar numbers, dispersion is low—and we can trust the guess more.

4. What is MoMo?
MoMo is a Spanish system that estimates how many people may have died because of environmental risks like extreme heat. It helps leaders and hospitals see the danger.

5. Why does the Mediterranean Sea temperature matter?
The sea acts like a giant bathtub. If it’s warmer than usual, it keeps the air above nearby land hotter and makes nights sticky, which makes heat waves even worse.