Robust thunderstorms are expected today across northern Italy and southern Switzerland, bringing intense and excessive rainfall, flash flood risks, damaging winds, possible tornadoes, and large hail (5 cm or more). Clusters of storms may persist into the evening and extend further east-northeast into northeast Italy, western Slovenia, and northwestern Croatia. The north Mediterranean and Alpine region face highest severe weather risks as a large upper-level trough deepens and drives an active frontal system through the area[1].
In central Europe, frontal systems associated with a low-pressure center over Ireland and the UK are moving west to east and contributing to volatile weather conditions, mainly severe thunderstorms and torrential downpours in affected regions[1].
Across Nepal, hilly regions of Bagmati, Gandaki, Lumbini, and Sudurpaschim provinces will see generally cloudy skies with chances of light to moderate rain at several locations. Heavy showers may occur in the Tarai of Lumbini Province and hills of Sudurpaschim and Karnali. The monsoon trough remains near its typical position and winds from the Bay of Bengal have increased, sustaining regional rainfall and flooding risks[5].
For Texas and the central US, monsoon moisture is producing heavy to excessive rainfall and potential flooding, particularly in the northern Intermountain West, central Rockies, south-central Plains, and lower Mississippi Valley. Flash flooding may affect areas with recent wildfire burn scars through Thursday[4].
Globally, above-normal temperatures are forecast for most land areas due to persistent warm ocean conditions, except in parts of the equatorial central and eastern Pacific. A forecast transition to weak La Niña conditions is expected, with the Indian Ocean Dipole shifting negative and Atlantic SSTs near average[3].
Current snapshots from key cities show varied conditions: Washington D.C. and New York are clear and mild at 67°F; London features passing clouds at 57°F; and Tokyo is warmer with broken clouds at 88°F[7].