Nahel Belgherze

Nahel Belgherze

@wxnb.bsky.social

Mainly focused on covering extreme weather events worldwide. Also interested in climate dynamics, geohazards and satellite remote sensing. Also on X: x.com/wxnb_

9.2K followers269 following126 posts

France appears to have just broken its national 1-hour, 2-hour, and 3-hour rainfall records, pending official confirmation. Solenzara, on the island of Corsica, has recorded a jaw-dropping 380 mm (15 inches) of rain since 9 a.m.

France’s ongoing drought has once again pushed soil moisture further below historical levels than any previously recorded drought. Uncharted territory.

Paris, France, has now recorded 100 days above 25°C (77°F) in 2026 so far. This has never happened before in a calendar year since records began 154 years ago, in 1872.

It’s hard to fathom the sheer scale of the devastation that occurred in Nepal and Tibet. The latest estimates suggest that the glacier-rock collapse mobilized more than 142 million m³ of material. Here’s what that volume looks like when placed over Manhattan, New York City for scale.

New analysis reveals that the flood wave traveled the first 25 km (15 miles) of its catastrophic descent at an average speed of 150 km/h (93 mph), reaching a maximum velocity of 190 km/h (120 mph) at the Nepal–Tibet border. Data: Geopera/Vantor

Nahel Belgherze@wxnb.bsky.social

An incredibly well-timed Landsat 9 pass captured the effects of yesterday’s catastrophic glacier collapse near the Nepal–Tibet border. The event was so massive that it was detected by seismometers around the world.

The failure times of river gauges deployed by Nepal’s DHM along the upper BhoteKoshi/Trishuli River indicate a maximum flood-wave propagation speed of at least 115 km/h (70 mph), possibly even higher near the Rasuwagadhi border checkpoint. You simply can’t outrun that.

An incredibly well-timed Landsat 9 pass captured the effects of yesterday’s catastrophic glacier collapse near the Nepal–Tibet border. The event was so massive that it was detected by seismometers around the world.

Yesterday’s severe weather event in southern France, which developed ahead of a potent mid-latitude cyclone, has been officially classified as a “derecho“. It traveled 500+ km in just a few hours.

Nahel Belgherze reposted

In terms of temperature anomaly for the last three months (MJJ 2026 period), France is the most anomalous country in the world with +2.8 °C above the 1991-2020 average.

It’s now official: June–July 2026 was the most anomalously warm two-month period ever recorded in France by a staggering margin. France is now virtually certain to record its warmest summer on record.

Bordeaux, France, has now recorded more days above 40°C in 2026 alone than during the entire 105-year period from 1920 (when observations began) to 2025. This is deeply shocking.

I've never seen anything like it. Salta, Argentina, has just recorded its hottest night on record during the climatologically coldest time of the year. The minimum overnight temperature did not fall below 26°C (78.8°F), pulverizing the previous monthly record by 7°C.

This extraordinary event was caused by a strong Zonda-like foehn wind. The Zonda is a hot, dry downslope wind that develops on the eastern side of the Andes in western Argentina. Look at how the relative humidity remained below 5% for hours in the table below.

Satellite imagery shows how dramatically France's appearance has changed in just one month after two consecutive heatwaves, including the most intense ever recorded.

As you might expect, the recent unprecedented heat event across Europe has triggered an extreme marine heatwave in the western Mediterranean Sea, with sea surface temperature anomalies now exceeding +7°C in some areas.

This is getting ridiculous. Germany has preliminarily set a new all-time heat record with 41.3°C in Saarbrücken. Until this extraordinary heatwave, the country had never recorded a temperature above 40°C in June. More extreme heat is expected this weekend.

The June 2026 heatwave will go down as the most statistically anomalous heat event ever observed at any time of year in metropolitan France. The 4-day mean temperature anomaly breached the extraordinary +10°C mark.

Paris, the capital of France, has recorded more days above 40°C this week than during the 147-year period spanning from 1872 to 2019. Historic is an understatement.

France officially recorded its hottest day on record yesterday, with the nationwide average temperature exceeding 30°C for the first time ever. Uncharted territory.

We have just witnessed France’s hottest day in recorded history. The severity of this heatwave is truly hard to comprehend. Over 50 millions people will be under red-level extreme heat warnings tomorrow. Sadly, what’s going on there is a foreshadowing of our future. Data: DWD/Météo France

France will be at the epicenter of the most significant heat anomaly on the planet over the next few days. The sheer extent of the country that could experience temperatures above 40°C is nothing short of astonishing.

France could record its hottest day ever in the coming days, exceeding the 30°C mark nationwide for the first time on record. A truly historic heatwave is on the way.

We are still pre-solstice and millions of people across Europe are about to endure another brutal heatwave. Sadly, this is just the beginning of what could potentially become one of the worst heatwaves in modern history for this region.

Can’t say I recall ever seeing this before. More than half of France’s 30+ year-old weather stations set/tied their monthly high-temperature record in May 2026. Some did so as many as 9 times. Unprecedented to witness this level of heat so early in the year.

Hard to believe I’m even writing this. Meteorological summer hasn’t even begun, yet Paris, France has already logged more days above 32°C than its annual average.

Today’s low temperature of 21.4°C in Camborne, Cornwall, was the highest May minimum temperature ever recorded in the UK and, in fact, the highest minimum temperature ever recorded at this station. This is a very significant record to fall by such an extraordinary margin.

I can’t believe it’s not even June yet and we’re already looking at the very real possibility of France reaching +40°C later this week. Literally hundreds of May records have already been set. Truly unprecedented to witness this level of heat so early in the year.

Before this heatwave, Phoenix, AZ had never recorded three consecutive days at 105°F (40.6°C) or above in March — The previous record was obliterated by more than 40 days. This is deeply shocking.

As the first reanalysis data become available, I think I can say with a fairly high degree of confidence that the March 2026 heatwave will go down as the most anomalously extreme heat event ever observed at any time of year in the southwestern U.S.

Flagstaff, Arizona: • March 19, 2026 high: 84°F • Previous March all-time high: 73°F • April all-time high: 80°F That's just plain ridiculous.

The word “unprecedented” gets thrown around a lot these days to describe the ongoing heatwave across the Western U.S., and let’s be honest — it’s absolutely justified. Perhaps the most impressive multi-day event since the 2021 PNW heat dome.

In Phoenix, Arizona, temperatures could reach an unbelievable 107°F (+42°C) on Friday. If that verifies, it would break the record for the earliest occurrence of 107°F since records began in 1895, pulverising the previous record by a whopping 44 days. This is totally bonkers.

For the first time since records began in 1950, France’s multi-week national MSLP has dropped below 1000 hPa. The persistence of this low-pressure pattern across western Europe in recent weeks has been nothing short of historic.

Grazalema, Spain, received over 2,000 mm (78 inches) of rain in just the last 20 days. Over a year’s worth of rain — and it’s only early February. This is hydrologically absurd.

Cuba 🇨🇺 has just recorded its lowest temperature on record this morning, with 0.0°C (32°F) at Indio Hatuey. This marks the first time in recorded history that the country has reached the freezing point.

The hydrological situation across a large part of the Iberian Peninsula is alarming, to say the least, and conditions are set to worsen as several powerful atmospheric rivers are forecast; major flooding cannot be ruled out.

Portugal and Spain are looking at tremendous precipitation from an onslaught of atmospheric rivers over the next 14-days. Flooding will certainly be a very real threat if these numbers materialize.

Storm Harry poses an extremely dangerous flooding threat to the central Mediterranean. The most extreme rainfall is forecast over eastern Sicily, especially the Province of Catania, where more than 500 mm of rain may fall in less than 48 hours.