Flood, Guam
- When
- August 28, 10:40 AM SST to 4:30 PM SST
- Where
- Guam County, Countywide
- Reported by
- OFFICIAL NWS OBS.
Flood in Guam, August 28, 1999
Daytime heating combined with favorable upper level winds produced showers and thunderstorms across the island of Guam. Winds were light so the movement of showers was slow which resulted in localized flooding.
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.
Daytime heating combined with favorable upper level winds produced showers and thunderstorms across the island of Guam. Winds were light so the movement of showers was slow which resulted in localized flooding. Rainfall recorded at the National Weather Service Office at Tiyan between 1000 and 1600 was 1.09 inches with an additional 0.62 of an inch falling between 1600 and 1900.
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
- Wildfire in California, August 28 to 31, 1999
- Flash Flooding in Nebraska, August 28 to 29, 1999
- Wildfire in California, August 28 to 31, 1999
- Hail in Nebraska, August 28, 1999
- Hail in Nebraska, August 28, 1999
- Lightning Strike in Texas, August 28, 1999
- Damaging Wind in Colorado, August 28, 1999
- Hail in Nebraska, August 28, 1999
- Wildfire in Texas, August 28 to 29, 1999
- Wildfire in California, August 28 to 31, 1999
- Hail and Damaging Wind in Kansas, August 28, 1999
- Tornado and Damaging Winds in Texas, August 28, 1999
More
Every storm in Guam in 1999Every state in 1999This day in weather historyWarnings in Guam, August 1999
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: 5721680.