A stationary front produced flash flooding.
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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.
The episode as NWS ILM wrote it up.
A stationary front produced flash flooding.
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 Wilmington, NC wrote its last area forecast discussion before the first event at Sep 1, 8:36 PM EST, 39 minutes earlier.
Area Forecast Discussion National Weather Service Wilmington NC 936 PM EDT Tue Sep 1 2020 .SYNOPSIS... Hot and humid weather will develop tomorrow and could result in heat advisories over portions of the area through Friday. A cold front is expected to usher in more seasonable temps for the weekend into early next week. && .UPDATE... Forecast updated to account for a persistent area of TSTMs just SE of Lumberton, NC where up to 2-3 inches of rain may have already fallen and a Flood Advisory is currently in effect. This should slowly dissipate over the next couple hours, while the remainder of the area is expected to stay dry tonight. && .NEAR TERM /THROUGH WEDNESDAY NIGHT/... Essentially a persistence forecast for the near term period. A few lingering mostly shallow showers will mingle around the area followed by some decent fog development again (mostly inland) late tonight into Tuesday morning. Some guidance has wobbled toward more convection vs previous cycles for Wednesday but anticipate it will be similar to today's rendition. As expected with the ridge building a Heat Advisory will most likely be needed for most areas Wednesday afternoon and will let the evening and or overnight shift to address specific timing with adjacent offices. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... Upper-level high pressure will remain in control on Thursday. Most of the area will stay dry, but will keep a slight chance of a shower along the coastal zones due to the potential for an organized afternoon sea breeze. Piedmont trough on Friday will shift the very limited focus for a stray shower or thunderstorm inland. Developing storms will be competing with dry air in the mid and upper levels, but a few isolated storms can't be ruled out during the afternoon. High temperatures on Thursday and Friday will be in the mid and upper 90s. We are unlikely to break any records, but we will be close. Heat indices will be well above 105 and this is likely to end as the hottest 2-day stretch of the year (a humorous welcome to meteorological fall). Overnight Friday, a cold front will move through the area as high pressure builds into the Ohio Valley. This could spark a few showers after sunset, but these will be few and far between. && .LONG TERM /SATURDAY THROUGH TUESDAY/... The front will push offshore on Saturday bringing slightly cooler temperatures, but no significant changes to the antecedent air mass. With the combination of this front offshore along with the breakdown of the upper-level ridge, storms will reappear in the forecast during the afternoon. The best chance will be in areas of SE NC, a few storms could develop elsewhere, especially along the mesoscale zones. On Sunday, high pressure to the north will continue pushing southward and so will the thunderstorm chances with areas like Georgetown and Kingstree seeing the best chance of an afternoon storm. High pressure will begin to retreat early next week and southerly flow of moisture will return. Thunderstorm chances will increase once again as a result. With the front becoming stationary over northern FL on Monday evening and Tuesday, convection to our south may lead to mid and high level clouds that inhibit our ability to generate afternoon instability. Temperatures will remain near the climo mark through the extended forecast thanks to the breakdown of the upper ridge. && .AVIATION /01Z WEDNESDAY THROUGH SUNDAY/... Dry forecast for the remainder of the night with convection not expected to impact the TAF sites. Fog/low stratus again likely at KFLO/KLBT tonight, with lesser chances near the coast where no fog mention was included in the 00Z TAFs. More isolated/scattered convection on Wednesday. Extended Outlook...Isolated afternoon convection is possible most days this week. Early morning fog and/or low stratus is also possible, especially inland. && .MARINE... Through Wednesday Night...All is very quiet on the high seas this afternoon with even a lackluster sea breeze in place at JMPN7 barley hovering into the double digits. This will remain the case with winds in the single digits mostly from the south, southeast. A bit more definition develops late Wednesday into Thursday morning as the Piedmont Trough becoming more prominent developing southwest winds in a 10-15 (mostly lower end) knot range. Significant seas will be 2- 3 feet. Thursday through Sunday... Typical southwesterly flow will continue Thursday into Friday at 10-15 knots. Seas will grow to 3-4 feet on Thursday with the tightening pressure gradient. Overnight Friday, a cold front will move through the area as high pressure builds into the Mid-Atlantic; waves will return to 2-3 feet after the frontal passage. Winds become offshore early Saturday before transitioning to mostly NE on Saturday afternoon around 10 knots through the remainder of the weekend. High pressure will work its way offshore early next week and SE winds will return to the area. Winds will slowly become southerly into Tuesday as the Bermuda high regains control, producing 2-3 foot seas with a 2 foot 9 second SE swell. && .CLIMATE... With yesterday's low of 76 degrees, Wilmington has now broken its all-time record for the most consecutive nights with lows 70 degrees or higher. Models continue to show little potential for any cool weather this week. Wilmington's temperature records began in 1874. Rank Consecutive 70+ Nights Dates 1 59 7/ 4 to 8/31/2020 2 58 6/27 to 8/23/2016 3 56 6/29 to 8/23/2012 4 52 6/22 to 8/12/1944 5 48 7/ 6 to 8/22/1986 Myrtle Beach, SC has also been quietly breaking its record number for consecutive nights with lows in the 70s. Myrtle Beach has 66 years of usable climate data, some dating back as early as 1931. Rank Consecutive 70+ Nights Dates 1 71 6/22 to 8/31/2020 2 64 6/21 to 8/23/2016 3 61 6/22 to 8/21/1969 4 56 6/29 to 8/23/2012 && .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && SYNOPSIS...ILM UPDATE...MAS NEAR TERM...SHK SHORT TERM...21 LONG TERM...21 AVIATION...MAS/43 MARINE...SHK/21 CLIMATE...
Hazardous Weather Outlook National Weather Service Wilmington NC 740 PM EDT Tue Sep 1 2020 AMZ250-252-254-256-022345- Coastal waters from Surf City to Cape Fear NC out 20 nm- Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm- Coastal waters from Little River Inlet to Murrells Inlet SC out 20 nm- Coastal waters from Murrells Inlet to South Santee River SC out 20 nm- 740 PM EDT Tue Sep 1 2020 This Hazardous Weather Outlook is for the adjacent Coastal Waters. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ087-096-099-105-107-109-110-SCZ017-023-024-032-033-039-054>056- 058-059-022345- Robeson-Bladen-Columbus-Inland Pender-Inland New Hanover- Inland Brunswick-Coastal Brunswick-Marlboro-Darlington-Dillon- Florence-Marion-Williamsburg-Coastal Horry-Inland Georgetown- Coastal Georgetown-Central Horry-Northern Horry- 740 PM EDT Tue Sep 1 2020 This Hazardous Weather Outlook is for southeast North Carolina and northeast South Carolina. .DAY ONE...Tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Heat index temperatures could exceed 105 degrees Wednesday, Thursday, and Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ106-108-022345- Coastal Pender-Coastal New Hanover- 740 PM EDT Tue Sep 1 2020 ...MODERATE RISK OF RIP CURRENTS IN EFFECT FROM 6 AM EDT WEDNESDAY THROUGH WEDNESDAY EVENING... This Hazardous Weather Outlook is for southeast North Carolina. .DAY ONE...Tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Moderate Risk of Rip Currents. Heat index temperatures could exceed 105 degrees Wednesday, Thursday, and Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The Wilmington radar (KLTX), 87 km away, was scanning. The volume nearest the first event began at 02:16 UTC.
1 flash flood. Local standard time, as filed.
High water on the road at the 9800 block of S Chicken Rd. High water was also reported at Turkey Branch Rd and Hwy 41.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2020Every state in 2020This day in weather historyWarnings in North Carolina, September 2020
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 2026-10-01. Each event’s entry at NCEI: 922277.