Heavy Rain — Galax (c), Virginia

2025-08-01 · near Galax, Galax (c), Virginia

Event narrative

A personal weather station (Weather Underground: KVAGALAX3) recorded a rainfall total of 3.14 inches which fell during a 90-minute period. This estimates to be roughly a 75-year rainfall event per NOAA Atlas 14 Point Precipitation Frequency estimates for this time duration.

Wider weather episode

A slow-moving line of storms passed across the City of Galax and neighboring Grayson County just before 2 pm EDT during the afternoon of August 1st, with multiple cells within the line observed training across the city. The line weakened and exited the area by around 3:30 pm EDT. Rainfall rates were observed to be as high as 4.5 inches per hour in a couple areas of the city, with storm total amounts per multiple personal weather stations observed to be between 3 and 3.25 inches. These amounts are estimated to be around a 75-year event at the 90 minute duration per NOAA Atlas 14 Point Precipitation Frequency estimates. CREST Unit Streamflow reached a maximum of a little over 500 cfs per mi^2, while the FLASH 1-hr QPE/FFG ratio reached as high as 150.

View location on OpenStreetMap → (36.6670, -80.9310)

Source: NOAA Storm Events Database, event_id 1293028. Narrative written by the NWS forecast office that issued the report.