Unprecedented August Rainstorm Breaks Over 100-Year Records in Israel

In mid-August 2026, Israel experienced an extraordinary rain event that shattered meteorological records dating back over a century. According to a report released by the Israeli Meteorological Service on August 17, the storm brought unusually heavy rainfall during the peak of summer, with approximately 30 millimeters recorded in Jerusalem and 26 millimeters in Maale Adumim on August 15. These amounts are unprecedented for the summer months since measurements began in the 19th century, when only minimal rainfall was typically recorded during this period.

The following day, August 16, the storm shifted eastward to the Jordan Valley and the Judean Desert, where similarly rare double-digit rainfall totals were documented. The meteorological phenomenon was caused by a rare combination of a high-altitude trough from the west, which brought southwesterly moisture to mid-atmospheric layers, coupled with an unusual cooling at about three kilometers altitude. This created significant atmospheric instability, leading to intense cloud development and heavy rains in regions unaccustomed to such summer precipitation.

The rain fell in intense bursts, with much of the total volume arriving within a single hour, resembling rare winter storm patterns rather than typical summer weather. The extreme rainfall triggered widespread flooding in Jerusalem, emergency rescues, and flash floods in the Judean Desert streams, an event never before recorded in August. Localized heavy rain also caused flash floods in the Jordan Valley.

Experts note a recent increase in summer rainfall frequency, possibly linked to global warming and the El Niño phenomenon. The current event is notable not only for its historic scale in Israel but also for simultaneous abnormal rains recorded across neighboring Middle Eastern and North African countries, indicating a broader regional climatic shift.