Heavy Rain in Sussex County, Delaware

Heavy Rain in Sussex County, Delaware: 192 recorded events between 1996 and 2022. The strongest on record measured 0. That places the county #8 nationally and #1 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for heavy rain in Sussex County is the 2010s, when 144 of the county's 192 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Sussex County archive, heavy rain makes up 22.6% of all recorded severe weather across 11 hazard types. Nationally the county sits at #8 for this hazard and #1 within Delaware, putting it in the 99.7 percentile of all U.S. counties.

Sep is the peak month for heavy rain in Sussex County with 110 recorded events, while Apr is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Thunderstorm Wind 367
• Lightning 80
• Flash Flood 68
• Hail 48

Written by National Weather Service staff at the time of the event · public domain

How many heavy rain events are on record in Sussex County, Delaware?

192 heavy rain events are recorded in Sussex County between 1996 and 2022, causing 0 direct deaths.

What is the strongest heavy rain recorded in Sussex County?

The strongest heavy rain on record in Sussex County measured 0.

Where does the heavy rain data for Sussex County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.