Flood — San Joaquin, California

2023-03-19 to 2023-03-31 · near Lathrop, San Joaquin, California

Event narrative

San Joaquin County Sheriff issued evacuation orders for 2 locations along the San Joaquin River starting on March 19, 2023. Those two locations include Airport Court, Manteca and Haven Acres Marina in Lathrop due to heavy rain and snowmelt. Evacuation orders were lifted on April 11, 2023.

Wider weather episode

Warm and wet system brought periods of heavy rain with flooding. Snow levels were high, with 1 to 2 feet of snow accumulating above 6,500 feet, locally more on higher peaks. Heavy rain on already saturated areas fell bringing additional roadway flooding, as well as local mudslides. Evacuations were ordered in San Joaquin County due to flooding. Thunderstorms with large hail, strong damaging winds and funnel clouds were reported. Strong winds gusting to 40 to 58 mph brought down trees and powerlines across the area, causing power outages.

View location on OpenStreetMap → (37.8474, -121.3294)

Source: NOAA Storm Events Database, event_id 1088835. Narrative written by the NWS forecast office that issued the report.