Flood, Guam
- When
- August 8, 11:00 PM SST to August 9, 12:00 AM SST
- Where
- Guam County, Central Portion
- Reported by
- OFFICIAL NWS OBS.
Flood in Guam, August 8 to 9, 1999
04 inches of rain to the National Weather Service Office at Tiyan between 2300 on August 8thand midnight on the 9th. Favorable upper level winds enhanced shower and thunderstorm activity across the Marianas Islands.
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.
Showers and thunderstorms brought 1.04 inches of rain to the National Weather Service Office at Tiyan between 2300 on August 8thand midnight on the 9th. Favorable upper level winds enhanced shower and thunderstorm activity across the Marianas Islands.
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
- Tornado in New York, August 8, 1999
- Lightning Strike in North Carolina, August 8, 1999
- Heat and Lightning Strike in Georgia, August 8, 1999
- Lightning Strike in Georgia, August 8, 1999
- Lightning Strike in Arkansas, August 8, 1999
- Hail in North Dakota, August 8, 1999
- Hail in North Dakota, August 8, 1999
- Flooding in Missouri, August 8 to 11, 1999
- Hail in Montana, August 8, 1999
- Damaging Winds in North Carolina, August 8, 1999
- Flash Flooding in New Mexico, August 8, 1999
- Damaging Wind in Massachusetts, August 8, 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: 5721547.