Flood, Guam
- When
- July 20, 1:00 PM SST to 3:30 PM SST
- Where
- Guam County, Central Portion
- Reported by
- OFFICIAL NWS OBS.
Flood in Guam, July 20, 2000
Inland showers and thunderstorms brought heavy rains to parts of Guam. Weather radar showed at least four inches of rain fell in the Tumon area.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS GUA wrote it up.
Inland showers and thunderstorms brought heavy rains to parts of Guam. Weather radar showed at least four inches of rain fell in the Tumon area. The heavy rain caused flooding in areas of Tumon and Tamuning. The thunderstorms formed over the island during the afternoon as a result of converging sea breeze winds Favorable upper level divergence caused by an upper low to the east of the island also aided in the formation of the thunderstorms. 0.50 inches of rain fell at the National Weather Service Office between 1000 and 1600.
Event by event
1 flood. Local standard time, as filed.
What these are
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in Mississippi, July 20, 2000
- Hail and Damaging Winds in Mississippi, July 20, 2000
- Damaging Winds in Arkansas, July 20, 2000
- Tornadoes and Hail in Colorado, July 20, 2000
- Damaging Winds in Oklahoma, July 20 to 21, 2000
- Heat in Mississippi, July 20, 2000
- Wildfire in California, July 20 to 21, 2000
- Hail and Damaging Winds in Georgia, July 20, 2000
- Tornado and Hail in Nebraska, July 20, 2000
- Hail in Nebraska, July 20, 2000
- Tornado and Flash Flooding in Kansas, July 20, 2000
- Hail and Damaging Winds in Florida, July 20, 2000
More
Every storm in Guam in 2000Every state in 2000This day in weather historyWarnings in Guam, July 2000
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5155409.