Flash Flood, Mercer
- When
- August 30, 4:30 PM CST
- Where
- Mercer County, 4 mi SE of Hazen
- Reported by
- DEPT OF HIGHWAYS
- Coordinates
- 47.309, -101.831 (the zone’s center; the record gives no point)
County roads washed out and rutted from flood waters.
Flash Flood in North Dakota, August 30, 2002
1 flash flood, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
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 forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Bismarck, ND wrote its last area forecast discussion before the first event at Aug 30, 1:40 PM CST, 2 hours 50 minutes earlier.
Area forecast discussion, Aug 30, 1:40 PM CST, 2 hours 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 240 PM CDT FRI AUG 30 2002 MODELS IN FAIR AGREEMENT WITH MID LEVEL TROUGH OVER WESTERN NORTH DAKOTA MOVING NORTHEAST. FIRST S/W OVER CENTRAL NORTH DAKOTA WITH CLEARING OVER WESTERN SOUTH DAKOTA AND SOUTWEST NORTH DAKOTA. CONVECTION ALREADY STARTING TO BUBBLE ALONG CLEARING LINE WHERE VERY MOIST AND UNSTABLE AIR IS GETTING BEST SOLAR HEATING. SEVERE THUNDERSTORM WATCH WILL BE ISSUED SHORTLY. SECOND S/W TO CWA THIS EVENING WITH CONVECTION TIMED TO END TONIGHT AND RECOMMENCE AGAIN SATURDAY AFTERNOON WITH NEXT SERIES OF SMALLER SHORT WAVES. SURFACE FEATURES STALL OVER CENTRAL NORTH DAKOTA UNTIL THESE FEATURES FINALLY PUSH FRONT OUT OF OUR REGION SUNDAY. IN EXTENDED PORTION WILL CONTINUE DRY FOR LABOR DAY AND TUESDAY. PUSH BACK NEXT PREICPITATION UNTIL WEDNESDAY NIGHT...CONTINUE FOR THURSDAY THEN ADD A DRY FRIDAY AS PACIFIC HIGH PRESSURE BUILDS OVER REGION. .BIS...NONE. HW
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 flash flood. Local standard time, as filed.
What these are
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flooding in Puerto Rico, August 30, 2002
- Tornado and Flash Flooding in Texas, August 30, 2002
- Lightning Strike in Alabama, August 30, 2002
- Hail and Damaging Winds in Texas, August 30, 2002
- Lightning Strike in Idaho, August 30, 2002
- Hail and Damaging Winds in North Dakota, August 30, 2002
- Flash Flooding in Minnesota, August 30, 2002
- Flash Flooding in North Carolina, August 30, 2002
- Hail in Oklahoma, August 30, 2002
- Hail in Montana, August 30, 2002
- Heavy Rain in South Carolina, August 30, 2002
- Heavy Rain in South Carolina, August 30, 2002
More
Every storm in North Dakota in 2002Every state in 2002This day in weather historyWarnings in North Dakota, August 2002
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: 5310305.