AGU Precipitation Technical Committee’s Post

🌧️#StormBabet (18-21 Oct 2023): A severe storm which brought record-breaking rainfall to eastern #Scotland, with some areas experiencing 129mm in a single day. 🏡  This led to significant #flooding, power outages, and transport disruptions. 🔌 Multiple severe flood warnings were issued, with Brechin being particularly hard-hit after the River South Esk overtopped its defences. 🚨Impacts: 121 mph gusts at Scotland’s Mountain summits, 30,000 homes without power, and major rail & flight disruptions. Seven fatalities reported. #UKStorms #StormSeason #GeographyTeacher #UKEdChat #Geography #StormNames #WeatherEducation #Education #ExtremeWeather Met Office Met Éireann KNMI - Royal Netherlands Meteorological Institute

🌧️🌪️ #StormElin & #StormFergus (9-10 Dec 2023): These consecutive storms brought severe weather and widespread flooding due to already saturated ground from a wet autumn. Gusts reached 81 mph and 94mm of rainfall recorded in Keswick, Cumbria. Numerous flood warnings were issued for major rivers, including the #Severn and #Ouse, with the ongoing threat of groundwater flooding. 🚨Impacts: Numerous flood warnings, major transport disruptions, and ongoing risk of groundwater flooding. Significant power outages in affected areas. #UKStorms #StormSeason #GeographyTeacher #UKEdChat #Geography #StormNames #WeatherEducation #Education #ExtremeWeather Met Office Met Éireann KNMI - Royal Netherlands Meteorological Institute

Issue 11 of our digital magazine Consorseguros, published in 2019, was dedicated to cut-off lows (#DANA) and flood risk. We consider it useful to share again the in-depht article, ‘Cut-off lows: Their characteristics and their effects’, which deals with the meteorological causes of DANAs and their possible evolution in the context of #ClimateChange. The article is available both in English👉 https://lnkd.in/dzZGhFqw and Spanish👉 https://lnkd.in/dzcQAnAS

Congrats to Sriya.AI team on their successful use of our Large Numerical Models #LNM prediction of coastal flooding with 99% precision and accuracy! Let’s chat about your use case to leverage #SXI+

Sriya.AI's revolutionary LNM predicts US SE Coastal Inundation with nearly 100% accuracy. I am very happy to share the results of a very crucial "US SE Coastal Inundation" project our team did this week and shared the results with our project sponsor. We now have a meeting with NOAA next week and hopefully will help NOAA to predict Coastal Flooding better initially in the east coast and then even in the west coast. Our prediction accuracy is >99%. See results below. Target Variable Flood Risk ( Yes: MLLW >6.5 ft , No: MLLW<6.5ft) Flood Risk: 7.96 % For ALL FEATURES No. of Independent Features: 53 No. of Rows: 2073 Sriya ML: Accuracy: 93.01% Precision: 78.57% AUC: 0.931 SXI: Accuracy: 95.18% Precision: 90.90% AUC: 0.946 SXI++: Accuracy: 99.97% Precision: 99.95% AUC: 0.997 DATA SETS: 4 RIVERS SEA LEVELS LUNAR CYCLE WEATHER DATA 6 TO 7 DATA SETS TOGETHER TRUE LNM

Intense rainfall in eastern Spain produced deadly and destructive flash floods in the province of Valencia. On October 29, 2024, more than 300 millimeters (12 inches) of rain fell in parts of the province, reported Spain’s meteorological agency, AEMET. In the town of Chiva, nearly 500 millimeters (20 inches) fell in 8 hours. The OLI (Operational Land Imager) on Landsat 8 captured this image (right) showing widespread flooding of urban and agricultural lands in and around the coastal city of Valencia on October 30. Sediment-laden floodwaters also filled the channel of the Turia river, which empties into the Balearic Sea (part of the Mediterranean), and the L’Albufera coastal wetlands south of the city. For comparison, the image on the left, also acquired by Landsat 8, shows the same area in late October 2022. (More recent Landsat scenes of the region were cloud-covered or otherwise unfit for an image comparison.) https://lnkd.in/eJnc_fTN #NASA #climate #climatechange #Spain #Valencia #floods #flooding

Dramatic images show the first floods in the Sahara in half a century More than year’s worth of rain fell in two days in south-east Morocco, filling up lake that had been dry for decades Eromo Egbejule and agencies 11 Oct 2024 Dramatic pictures have emerged of the first floods in the Sahara in half a century. Two days of rainfall in September exceeded yearly averages in several areas of south-east Morocco and caused a deluge, officials of the country’s meteorology agency said in early October. In Tagounite, a village about 450km(280 miles) south of the capital, Rabat, more than 100mm (3.9 inches) was recorded in a 24-hour period. Satellite imagery from Nasa showed Lake Iriqui, a lake bed between Zagora and Tata that had been dry for 50 years, being filled up. “It’s been 30 to 50 years since we’ve had this much rain in such a short space of time,’ Houssine Youabeb, an official of Morocco’s meteorology agency told the Associated Press. Such rains, which meteorologists call an extratropical storm, may change the weather conditions in the region in the coming months and years. As the air holds more moisture, it promotes evaporation and provokes more storms, Youabeb said. The flooding in Morocco killed 18 people last month, with the impact stretching to regions that had been affected by an earthquake last year. There were also reports of dammed reservoirs in the south-east region refilling at record rates throughout September. The Sahara, which at 9.4m sq km (3.6m sq miles) is the world’s largest hot desert, stretches across a dozen countries in north, central and west Africa. Recurring drought has been a problem in many of these countries as extreme weather events are on the rise due to global heating. That has led to predictions from scientists that similar storms could happen in the Sahara in the future. Celeste Saulo, the secretary general of the World Meteorological Organization, told reporters on Monday that water cycles across the world were changing with increasing frequency. “As a result of rising temperatures, the hydrological cycle has accelerated. It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water,” she said.   https://lnkd.in/ePV3aD_U

The Italian FlOod and Catchment Atlas (FOCA), a product of the #PNRR #Return Project, has been finally released!  FOCA integrates historical flood data from 631 watersheds included in the Catalogo delle Piene dei Corsi d’Acqua Italiani (Catalogue of Floods of Italian Watercourses) (https://lnkd.in/eRYeNxdJ) with more than 100 geomorphological, soil, climatic and extreme rainfall #basin #attributes. Using data with national spatial coverage, FOCA ensures uniform accuracy throughout the Country, with a minimum spatial resolution of 1 km.  The dataset is freely accessible on Zenodo (https://lnkd.in/eTURjDUN). A detailed description of content and methods used is available on Earth System Science Data (https://lnkd.in/euqgjZPD). Giulia Evangelista, Daniele Ganora, Paola Mazzoglio, Irene Monforte

The tragic floods in Valencia, Spain, have claimed over 200 lives and caused massive economic losses. Debris removal and reconstruction across the more than 1,500 km² affected by the flooding may take months or even years. This is not the first, nor will it be the last, of such events (e.g., more than 600 lives were lost in the 1962 Rubi flash floods). While damage to infrastructure can be mitigated, it is vital for emergency services to respond in a coordinated manner to provide timely risk warnings. Thanks to the collaborative efforts of meteorologists, engineers, physicists, geologists and other scientists, we can predict which areas are likely to be affected and assess the extent of many extreme weather phenomena. Our mission is to raise awareness of the geological risks associated with these events, enhancing public understanding of our environment and promoting sustainable and resilient land planning. Now is the time to highlight the importance of our science, raise public awareness about the role of geologists, and harness this knowledge to build societies better prepared for climate change. #flash_floods #climate_change #resilience #extreme_events #geological_risks #land_planning #emergency #valencia #river_avulsion #public_engagement #preparedness #nature_based_solutions #weather #geology_for_Society

There's still time to secure your spot! Join us for an informative webinar on flood simulation using #ArcGISPro. Learn how to model water flows within the interface and gain insights from real-world use cases. Don't delay, sign up today: https://lnkd.in/d-5QGbc2 #Esri #EsriSaudiArabia #ArcGIS #GIS #ArcGISPro #FloodSimulation #Webinar #WaterFlowModeling #RealWorldUseCases #GIS #DataAnalysis #Geospatial #FloodModeling #SimulationCapabilites #EsriWater #RegisterNow