An isolated stationary storm dumped four inches of rain.
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The episode as NWS ILM wrote it up.
An isolated stationary storm dumped four inches of rain.
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 Aug 15, 3:22 PM EST, 8 minutes earlier.
Area Forecast Discussion National Weather Service Wilmington NC 422 PM EDT Wed Aug 15 2018 .SYNOPSIS... Generic Bermuda high pressure off the Carolina coasts will maintain hot and humid weather through Friday. The normal summer-time thunderstorm activity will persist thru Friday. Convection will increase in coverage this weekend through early next week due to the combined effects from an approaching upper trough and a surface cold front that eventually will stall across the Carolinas. && .NEAR TERM /THROUGH THURSDAY/... As of 345 PM Wednesday...Looking at the normal summertime convection process across the FA thru Thursday. With the sea breeze circulation and the Piedmont trof as sources of lift for the aftn into the early evening hours. POPs will generally peak in the low to possibly mid chance categories...ie. between 15 to 40 percent. Short-wave ridging aloft will temporarily push across the FA tonight thru Thu and will act to negate tstorm development. However, it's not nearly progged to be strong enough to take out tstorms altogether, especially not during this time of the year. Widespread fog/low stratus compared to the previous 2 mornings, is not expected. However, locations that receive rainfall this aftn/evening will have the best chances to see fog restrictions below 1 mile and also a temporary low stratus deck less than 1k feet, much depends on the possible development of a low level SW jet that may keep winds up just enough for prevent dense fog and stratus overcast. Temperatures, both max and mins, were a consensus amongst all model MOS guidance with no record setting temps expected, with the fcst basically right at normal climo values this time of the year. && .SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/... As of 330 PM Wednesday...A broad southwest flow will persist across the region through the period. Moisture will be on the increase gradually with precipitable water values increasing to just over two inches by period's end. Forcing will follow a similar trend with a gradual increase with slowly increasing pops. The highest pops are for Friday afternoon when the aforementioned elements and of course the added daytime instability combine in tandem. Very steady state temperatures with highs in the lower to middle 90s and overnight lows in the 70s. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... As of 300 PM Wednesday...An active period of weather looks likely much of the extended as a series of fronts/troughs impacts the Southeast. The first of these will be driven beneath a mid-level shortwave digging into the area late Saturday into Sunday. Although the trough axis is progged to shift offshore late Sunday, ahead of this occurrence moisture will stream into the region with PWATs surging towards 2.25 inches. This moisture will work in tandem with convergence near the surface boundary, height falls, and moderate diffluence on the RRQ of an upper jet angling across New England to produce scattered to potentially widespread showers and tstms, especially on Sunday. The surface boundary will linger into Monday but other forcing weakens, so convection chances remain elevated, but lower than during the weekend. A brief period of shortwave ridging on Tuesday which will bring somewhat above normal temps and drier weather, another mid-level trough and cold front will move into the Southeast by the end of the period. Temps through the period will be around to slightly above normal for highs, with above normal mins likely each night. Cloud cover and convection may keep temps a bit cooler than progs for the weekend before subtly warmer conditions develop early next week. && .AVIATION /20Z WEDNESDAY THROUGH MONDAY/... As of 18Z...Sea breeze induced convection has begun and will continue to ignite as we go thru the aftn. For the coastal terminals will initially have VCTS followed by tempo grouping for atleast MVFR and possibly may include IFR conditions prior to any AMDs. The inland terminals will see possible tstorm activity from the decaying stalled boundary that's been situated across the vicinity since the start of this work-week. At this point will identify this threat with VCTS and AMD when necessary due to their later start and less coverage compared to sea breeze induced convection. Tstorm activity will wane quickly after sunset, with S to SSW sea breeze induced winds will fade rather quickly given low tide occurring this evening. Will keep a SW 5 kt or less wind at the coastal terminals due to a low level sw jet. This may deter most fog development at the coast but could see MVFR/IFR across the inland terminals from 08Z-12Z. A weak mid-level s/w ridge will keep convection to a minimum during Thu. Extended Outlook...Mainly VFR conditions expected Thursday and Friday except for areas of pre-dawn ground fog. The potential for thunderstorms with brief MVFR/IFR conditions increases by late Friday and more likely during this weekend. && .MARINE... NEAR TERM /THROUGH THURSDAY/... As of 345 PM Wednesday...Southwest flow around 10 kt except SSW flow increasing to a solid 15 kt near shore late this aftn thru the evening due to the sea breeze circulation cycle. A weak low-level southwesterly jet over the area waters is expected tonight into Thu morning and should keep SW winds in a solid 10 to 15 kt range overnight. Significant seas for the remainder of this aftn thru Thu will run a solid 3 ft. Wind wave generation at 4 to 6 second periods will dominate the seas thru tonight. However, the ESE ground swell at 7 to 9 second periods will become the more dominate contributor to sig. seas during Thu and beyond. SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/... As of 330 PM Wednesday...Southwest winds of 10-15 knots a little higher overnight with the nocturnal jetting will be in place across the coastal waters through the period. The low level jet may even produce a few hours of 15-20 knots and maybe just a little over early Saturday. Significant seas will generally be 2-4 feet with the higher end of the range coupled with the higher winds. LONG TERM MARINE /SATURDAY THROUGH MONDAY/... As of 330 PM Wednesday...High pressure offshore will remain in place which will force an approaching cold front to stall and dissipate as it approaches the area late in the weekend into early next week. This will drive SW winds of 15=20 kts Saturday, easing a bit to around 15 kts Sunday, before falling off moreso on Monday thanks to the weakening gradient. A low amplitude 1ft/9sec SE swell will persist through the period, but the primary wave group will remain a 5 sec SW wind wave at 3-4 ft. This will produce significant seas of 3-4 ft Saturday and Sunday, falling to 2-3 ft Monday. && .CLIMATE... As of 300 AM Wednesday...Although rainfall in Wilmington over the past 10 days has not been substantial, exceptionally wet weather in May and July is still maintaining 2018 as the wettest year in history. In fact through yesterday we're still running over 10 inches ahead of the next wettest year! Annual average rainfall for Wilmington is 57.61 inches. Wettest Years in Wilmington's History (Jan 1 through August 14th) Rank Rainfall & Year 1 60.78" in 2018 2 49.99" in 1966 3 48.86" in 1886 4 48.11" in 1969 5 46.23" in 1973 Assuming average rainfall for the remainder of the year we should approach the all-time wettest complete year in Wilmington's history, 1877, when 83.65 inches of rain fell. && .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && SYNOPSIS...DCH NEAR TERM...DCH SHORT TERM...SHK LONG TERM...JDW AVIATION...DCH CLIMATE...TRA
Hazardous Weather Outlook National Weather Service Wilmington NC 311 AM EDT Wed Aug 15 2018 NCZ087-096-099-105>110-SCZ017-023-024-032-033-039-054>056-058-059- 160715- Robeson-Bladen-Columbus-Inland Pender-Coastal Pender- Inland New Hanover-Coastal New Hanover-Inland Brunswick- Coastal Brunswick-Marlboro-Darlington-Dillon-Florence-Marion- Williamsburg-Coastal Horry-Inland Georgetown-Coastal Georgetown- Central Horry-Northern Horry- 311 AM EDT Wed Aug 15 2018 This Hazardous Weather Outlook is for southeast North Carolina and northeast South Carolina. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. AMZ250-252-254-256-160715- 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- 311 AM EDT Wed Aug 15 2018 This Hazardous Weather Outlook is for the adjacent Coastal Waters. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
A slow moving storm produced four inches of rain in Ogden. Police closed Bright Leaf Road at Wendover Lane. Flooding was also reported in the 7400 block of Market Street and on Amsterdam Way.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2018Every state in 2018This day in weather historyWarnings in North Carolina, August 2018
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: 779876.