Flash Flood, Sussex
- When
- June 21, 4:00 PM EST to 7:00 PM EST
- Where
- Sussex County, Ellendale
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 38.683, -75.339 (the zone’s center; the record gives no point)
Flash Flood in Delaware, June 21, 2001
The same thunderstorm that initially brought wind damage to the Ellendale area moved so slowly that it dropped torrential rains to the region. Doppler Radar storm total estimates reached between 6 and 7 inches.
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 happened
The episode as NWS PHI wrote it up.
The same thunderstorm that initially brought wind damage to the Ellendale area moved so slowly that it dropped torrential rains to the region. Doppler Radar storm total estimates reached between 6 and 7 inches. The torrential downpours caused stream flooding, but no serious injuries were reported.
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 Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Jun 21, 2:45 PM EST, 1 hour 15 minutes earlier.
Area forecast discussion, Jun 21, 2:45 PM EST, 1 hour 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 345 PM EDT THU JUN 21 2001 WEAK S/W DRAPED ACROSS CENTAL PA INTO DELMARVA PER HIGH RES 12Z ETA WHILE VIS SAT PIX SHOWS AN ACTIVE SEABREEZE FRONT. BAYBREEZES ALSO FIRING UP MOIST CONVECTION ACROSS DELAWARE. 88D SHOWING MUTLIPLE OUTFLOW BOUNDARIES. DEWPOINTS IN THIS AREA...WHERE A SURFACE BOUNDARIES ALSO LIES...SHOWS LITTLE DIFFERENCE AND ARE RANGING FROM THE MIDDLE 60S TO LOWER 70S. LAPS ANALYSIS SHOWS LI/S APPROACHING -7 WITH CAPES BETWEEN 2-3K J/KG. THIS HELPING TO ENHANCE AND SUSTAIN CONVECTION. MENTIONED S/W DRIFTS NE IN H5 FLOW AND WILL BE POSTIONED OVER THE UPPER HUDSON VALLEY LATER TONIGHT. BY DAYBREAK A SECONDARY VORT WILL BE APPROACHING DELMARVA. THIS ONCE AGAIN PER 12Z ETA. WITH THE HELP OF THE H8 JET...THE NOW STATIONARY SURFACE BOUNDARY WILL RETREAT NORTHWARD TOMORROW. HAVE BROADBRUSHED CHANCE POPS AT THIS TIME. WHILE COLD FRONT LIFTS ACROSS OUR CWA TOMORROW...A COLD FRONT WILL BE WORKING ACROSS WESTERN PA. FRONT IS SLOW TO MOVE AND WON/T APPROACH THE CWA UNTIL FRIDAY NIGHT/SATURDAY. FRONT SHOULD STALL ACROSS THE AREA THIS WEEKEND AS UPPER FLOW ALLIGNS ITSELF WITH MENTIONED SURFACE FEATURE. WITH THIS IN MIND HAVE BUMPED UP POPS FOR PERIODS 3 AND 4. NO CONCERNS WITH MARINE. .PHI...NONE. KRUZDLO
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
- Flood and Hail in Georgia, June 21, 2001
- Flash Flood and Damaging Winds in Pennsylvania, June 21 to 22, 2001
- Lightning Strike in South Carolina, June 21, 2001
- Lightning Strike in Florida, June 21, 2001
- Damaging Wind in West Virginia, June 21, 2001
- Hail and Damaging Winds in Texas, June 21, 2001
- Hail and Lightning Strike in Florida, June 21, 2001
- Damaging Winds in Ohio, June 21, 2001
- Tornado in Florida, June 21, 2001
- Damaging Winds and Lightning Strike in Virginia, June 21, 2001
- Lightning Strike in Florida, June 21, 2001
- Hail and Damaging Winds in Tennessee, June 21, 2001
More
Every storm in Delaware in 2001Every state in 2001This day in weather historyWarnings in Delaware, June 2001
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: 5254075.