Update Date | 18‑10‑2026
WASM – A regional rainstorm is expected to begin at the end of the week over parts of the Levant and northwestern Saudi Arabia, becoming intense and wide‑ranging next week with “high” risk of a regional flash‑flood event.
Highly moist and strongly disturbed equatorial waves from the Arabian Sea will deepen toward the Arabian Peninsula starting at the end of the week, coinciding with the approach of late‑month weather systems, leading to a widespread and heavy regional rainstorm.
The detailed seasonal weather bulletin for the Arab region for 2026–2027 has been issued.
Regional Flash‑Flood Risk
The Wasm Regional Center is monitoring a regional rainstorm expected to begin at the end of the week, intensify next week, and cover wide areas of the Arabian Peninsula, Saudi Arabia, the Levant, Iraq, and northern Egypt.This system is likely to produce a regional flash‑flood wave, especially next week, late October, and into early November.Detailed updates will be issued progressively.
Saudi Arabia, the Arabian Gulf, and the Arabian Peninsula
Weather stabilizes temporarily in northwestern Saudi Arabia but will become unsettled again toward the end of the week as a regional rainstorm affects the area.
The regional rain event begins at the end of the week over northwestern Saudi Arabia, Iraq, and parts of the Levant and surrounding areas, then intensifies significantly during the last week of the month and expands over wide regions.
Heavy thunderstorms are expected at times over the highlands of Makkah, Taif, Al‑Baha, Jazan, Asir, and surrounding areas.The system strengthens further next week with the regional rainstorm.
Levant
Cold weather dominates in the coming days followed by a rise in temperatures toward the end of the week.Heavy rainfall continues over Lebanon and northwestern Syria and extends as scattered showers into parts of Palestine.
A heavy regional rainstorm is being monitored, expected to begin at the end of the week and intensify significantly next week, with high risk of new and strong regional flash‑flood events.
Jordan
Cold, semi‑winter weather—especially at night.A heavy regional rainstorm is expected to begin at the end of the week over some areas (to be specified in upcoming updates), then expand during the last week of the month to cover wide regions, with rising flood risks.Details will follow.
Syria
Generally cold weather, with the gradual retreat of the current low‑pressure system followed by a rise in temperatures.
A regional rainstorm will affect the country, beginning at the end of the week over some areas, then expanding significantly and becoming intense next week and toward the end of the month.Further details will follow.
Palestine
Cool daytime weather and cold, semi‑winter nights.Temperatures rise toward the end of the week ahead of a strong rainstorm expected next week.Details will be issued progressively.
Lebanon
Cold, semi‑winter weather in the mountains with limited rain showers, followed by a rise in temperatures at the end of the week.
A rainstorm begins at the end of the week over some areas, then intensifies and becomes heavy next week and toward the end of the month.Further details will follow.
Iraq
Weather stabilizes temporarily, then becomes unsettled again in various regions mid‑ and late‑week as a precursor to a regional rainstorm.
Iraq will be affected by a heavy regional rain event beginning at the end of the week, intensifying next week, and becoming very heavy.
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