Mohamed Ali Hafien

Tunisia
Joined July 2019
climate Extreme retweeted
Large hail is expected across parts of Nebraska and Iowa this evening. An important component of a large hail environment is to have minimal CAPE below the hail growth zone (HGZ) temperatures and maximal CAPE within the HGZ.
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climate Extreme retweeted
Understanding the adiabatic process (which is any process where there is no heat transfer into or out of a system) is incredibly important for meteorology. I’ve put together an animation explaining why air cools down as it is being lifted and vice versa.
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climate Extreme retweeted
Wider convective clouds tend to resist harmful dilution of their buoyancy by entrainment because they have a smaller ratio of exposed surface area to volume. If you generalize to include the effect of tilt on this ratio, you find that tilting a storm *increases* entrainment.
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climate Extreme retweeted
Mind-blowing event yesterday east of Annapurna II (NE face visible here, 7937 m, Nepal)! 😱 Probably triggered by ice (+rock?) avalanche at high elev., given the reach and absence of snow at the moment 🧊 The extent of the aerosol is... HUGE! ❄️ Source tiktok.com/@lakpasherpinishe…
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climate Extreme retweeted
This #Sentinel3 image from 2 April 2025 provides a rare, cloud-free view of the British Isles. Acquired in the wake of the UK’s sunniest March on record since 1910, the image reflects a period marked by extended sunshine and exceptionally dry weather. 🔗bit.ly/4cg2tA1
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climate Extreme retweeted
Relentless rounds of heavy rain have inundated parts of the central United States, prompting multiple flash flood emergencies. bit.ly/3DWhaMb
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climate Extreme retweeted
Video of the tornado from Lake City, Arkansas tonight. Buddy of mine sent me this.
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climate Extreme retweeted
Newly available high-resolution satellite imagery collected by Maxar reveals sections of the surface rupture near the zone of maximum surface displacement of last week’s Mw 7.7 earthquake in Myanmar. Rupture is ~500 km long, with up to 5 meters of fault slip.
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climate Extreme retweeted
🌧️Thanks to data from @esa_earthcare, scientists are getting useful insights into storm systems like the ones that hit Spain and Portugal in March, helping them better understand how clouds and aerosols affect Earth's climate. earth.esa.int/eogateway/succ… 📸Edward Baudrez, Royal Meteorological Institute of Belgium
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climate Extreme retweeted
Et si l’année 2025 s’annonçait prolifique en terme de nombre d’impacts de foudre ? Nous allons parler du « marais barométrique », une situation météorologique pouvant entraîner des multiplications d’orages (réf : mai/juin 2023) FIL 🧵👇🏻
La véritable saison orageuse 2025 s’est lancer de façon précoce au mois de mars avec 10046 impacts le 22/03. Depuis le 1er mars : on enregistre 25483 impacts, 43010 impacts depuis le début de l’année soit moins que l’année 2024 depuis la même période avec 51524 impacts. ⚡️ (Source statistique foudre @KeraunosObs)
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Wildfires spark naturally or from humans, and we’re improving detection. Climate change intensifies them with heat and drought, but WMO’s forecasting gives a clearer picture of risks and impacts everywhere, powering #EarlyWarningsForAll. earlywarningsforall.org/site…
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على مدى عقدين من الزمن، وثّقت الأقمار الصناعية في #كاكست مراحل توسعة #المسجد_الحرام، لتُظهر حجم العناية والاهتمام من القيادة الرشيدة التي جعلت خدمة الحرمين شرفًا ورسالة.
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climate Extreme retweeted
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تصويري قبل قليل لـ صلاة العشاء والتراويح بـ المسجد الحرام #ليله_25 رمضان 1446 هـ . #ليلة_القدر
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🇨🇳 🔴الصين تمحو الصحاري من خريطتها. حتى الآن، خُضّرت 65 مليون مو (مساحة صحراوية شاسعة). أي ما يعادل مساحة الدنمارك تقريباً..
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Kilka minut temu można było na Polskim niebie zobaczyć drugi stopień rakiety @SpaceX, Falcon 9 😍🚀 fot. Døminika Bednarczyk, Mogielnica @meteo_expert @MeteoprognozaPL #obserwatorzyburz #rakieta #kosmos #falcon9
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climate Extreme retweeted
Orange sky! The image shows the surface particulate matter (PM10) concentration caused by the #Saharandust transport over #Italy heading to #Greece provided by #Copernicus CAMS on March 24th at 11. #Airquality Ancora polvere sahariana in arrivo sull'#Italia il 24 marzo 2025.
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Stunning banner cloud over the Rock of Gibraltar. 📽: Met Office Gibraltar
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Have you checked out the CAMS Methane Hotspot Explorer app? Visualise CH4 plumes and identify their sources with this cutting-edge tool developed with the Netherlands Institute for Space Research. Read more atmosphere.copernicus.eu/cam… #CopernicusAtmosphere
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