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Typhoon Wipha Brings Heavy Rain and Flooding to Nan Province

Strategic Insights

— 1 min read

Heavy rain brought by Typhoon Wipha has caused severe flooding in Nan Province, Thailand. The accumulated rainfall exceeded 200 millimeters, causing the Nan River to rise rapidly. Flooding has been reported in many areas, including Pua, Bo Kluea, Chaloem Phra Kiat, Tha Wang Pha, and several other districts. The heavy rain has continued throughout the night, with the highest accumulated rainfall recorded at the left bank of the Nam Kon headwaters station in Tambon Phaya Kaew, Amphoe Chiang Klang, reaching 291 millimeters.

Key Takeaways:

  • The accumulated rainfall exceeded 200 millimeters at 18 stations in Nan Province, with the highest recorded at 291 millimeters at the left bank of the Nam Kon headwaters station.
  • Flooding has been reported in many areas, including Pua, Bo Kluea, Chaloem Phra Kiat, Tha Wang Pha, and several other districts.
  • The Nan River level is rising rapidly, with an average increase of 30 centimeters per hour.
  • The water level at the Nam Tan river, which flows through Nan City, has increased by more than 1 meter from yesterday and is still rising at an average of 33 centimeters per hour.
  • Officials have announced to residents in low-lying areas, municipalities, and economic zones to prepare for possible flooding.
  • Big bags have been placed at risk points to prevent overflow in case the water rises high.

Statistics:

  • The accumulated rainfall exceeded 200 millimeters at 18 stations in Nan Province.
  • The highest accumulated rainfall recorded was 291 millimeters at the left bank of the Nam Kon headwaters station.
  • The Nan River level is rising at an average rate of 30 centimeters per hour.
  • The water level increase at the Nam Tan river is more than 1 meter from yesterday and is still rising at an average of 33 centimeters per hour.
  • The water level at the Ban Pha Kwang station has risen to 7 meters from the critical point of 9 meters and is still rising.

Sources:

  • Thai News Agency, 23 Jul 2025
  • Friends in Need (Pha) Foundation's measurement stations in Nan Province

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