Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Local Observations And Impacts From Past Tropical Cyclones

This page provides links to observational data from our local area for tropical cyclone events since 2023.

NOTE: Point-based observations are unlikely to sample the most extreme conditions.

2025

July - Tropical Storm Krosa (12W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported
August - Tropical Storm Podul (16W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure - No observational data exists for the 3 islands in the far northern Marianas
  - Rainfall - No observational data exists for the 3 islands in the far northern Marianas
  - Water Levels - No observational data exists for the 3 islands in the far northern Marianas
  - Tornadoes - No tornadoes were reported
November - Tropical Storm Fung-wong (32W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported

2024

September - Tropical Storm Bebinca (14W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported
September - Tropical Storm Jebi (19W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported
November - Tropical Storm Man-yi (25W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported

2023

May - Super Typhoon Mawar (02W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported
- Supplemental Reports
  - NWS Guam STY Mawar Meteorological Assessment
  - Mawar Assessment Press Release - July 14, 2023
October - Super Typhoon Bolaven (15W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure
  - Rainfall
  - Water Levels
  - Tornadoes - No tornadoes were reported

November - Tropical Depression Seventeen (17W)
- Observational data summary
- Impacts report
- Downloadable observational data (CSV format)
  - Wind and Pressure - No reports of peak gusts exceeding 33 knots or pressures less than 1005 mb
  - Rainfall - No reports of rainfall 3 inches or more
  - Water Levels - No significant rise in water levels reported
  - Tornadoes - No tornadoes were reported