Mediterranean rain alert France floods, Spain warns

Sep 30

RTVE reports a red flood alert in southeastern France after torrential rain causes overflowing rivers, landslides and road closures. Mónica López gives local totals above 330–350 litres per square metre, says rainfall eased in the afternoon and reports no known casualties. She explains southeast maritime winds and then Spain's cold front, warm Mediterranean, easterly moisture and instability aloft. Warnings concern Thursday afternoon and night, especially Catalonia, Valencia, Castellón, Teruel and eastern Castilla-La Mancha, with totals of 160 litres in twelve hours and some models concentrating that amount into two or three hours. She distinguishes lighter or absent rain elsewhere, previews difficult conditions into Friday morning and possible heavy weekend showers. These Spanish impacts are forecasts, not observed floods.

Sven Plöger describes exceptional, nearly stationary heavy rain in southern France near Montpellier and the Cévennes. Mediterranean water around 25°C, roughly three degrees above normal, supplies moist air driven against mountains. He says Saint-Hippolyte has received 355 litres per square metre since midnight, about seven times Berlin's average September rainfall. Another 100–150 litres could fall by noon the next day, he warns. The additional amount is a forecast; casualties and a larger observed total are not reported. France 2 describes the same September 30 rain and immediate Gard/Hérault floods, identifying Saint-Hippolyte-du-Fort and giving 340 litres per square metre since morning. It reports Vidourle rises at Quissac/Lunel, monitoring on the Gardon at Anduze, and 124 millimetres in three hours around Montpellier, Lez flooding, stopped transport and precautionary Lattes evacuations. The Sommières/Cévennes explainer discusses stationary moist air and the warmer Mediterranean. The 340 and 355 totals have differently stated windows and remain source snapshots. The earlier additional 100–150-litre forecast remains a forecast. RTVE's September 30 weather unit describes the same stationary southern French rain, red flood alert, rivers overflowing, landslides and road closures. Mónica López gives local totals above 330–350 litres per square metre, says rain eased during the afternoon and reports no known casualties. Her local snapshots and qualification do not replace France 2's observations or Plöger's forecast. RTVE explicitly relates the episode to its separate prospective warning for eastern Spain.