After receiving 3 to 5 inches of heavy rainfall across the northwest Piedmont earlier in the afternoon on the 24th, another round of training showers and thunderstorms|overnight dropped an additional two to three inches of rain fell across western and northern portions of Forsyth County.
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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 RAH wrote it up.
After receiving 3 to 5 inches of heavy rainfall across the northwest Piedmont earlier in the afternoon on the 24th, another round of training showers and thunderstorms|overnight dropped an additional two to three inches of rain fell across western and northern portions of Forsyth County.
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 Raleigh, NC wrote its last area forecast discussion before the first event at Jul 24, 9:39 AM EST, 1 hour 51 minutes earlier.
Area Forecast Discussion National Weather Service Raleigh NC 1039 AM EDT Tue Jul 24 2018 .SYNOPSIS... A large upper level low pressure area over the eastern United States will weaken and lift out to the northeast through Thursday. A nearly stationary boundary will continue to focus showers and thunderstorms over the region. Some drier air will move into western areas of NC Thursday and Friday, as a surface trough stalls over eastern NC. && .NEAR TERM /THROUGH TONIGHT/... As of 245 AM Tuesday... Flash Flood Watch through 06z/Wednesday continues... Central North Carolina for the most part lies in between two areas of showers and isolated thunderstorms this morning. This is due to a vertically stacked upper level low currently located over Georgia this morning. On the WV the current lack of precipitation can be traced to the dry conveyor belt wrapping up into the occlusion of the low. Given the above, PWATs still remain high with the latest KGSO sounding observing a 1.80" PWAT (around the 90th percentile for this time of year). Looking at forecast soundings for today, hints of some drier air can be seen, but soundings should still see more than sufficient moisture for development this afternoon. 1 hr FFG remains on average around 2.00" and in any heavier storms (or storms that train) this could be met. Given the above, the Flash Flood Watch will continue as planned until 2 AM EDT Wednesday morning. Prev Discussion-> The main moisture convergence and limited instability remained near the coast at 230 am. Bands of convection have been rotating inland along the SC/NC coast, with the heavy rain elements generally limited to the Coastal Area. The reflectivities weaken considerably as the convection rotates a few counties inland from the coast due to the lack of instability inland. This is expected to change somewhat in the next few hours as a vorticity maximum in the broad southerly flow along the SC coast continues to move NNE. While the heaviest rain is expected from I-95 eastward, some showers with heavy rain are expected inland. The main flash flood threat may end up where the very high PW plume (in excess of 2.2 inches) surges up the eastern third of NC today. This is where moisture convergence and instability will be maximized. However, with heating today and more disturbances upstream to aid in upper support, showers and thunderstorms with the threat of heavy rain and localized flash flooding will exist. We will maintain the current Flash Flood Watch through the peak period of instability until the convection wanes and shifts NE tonight. QPF today and tonight in general is highest in the east, with 1-3 inches, and lower west (0.50 to 1 inch or so). As far as the severe threat, the weakening (20kt) mid level flow favors less organization of storms, yet isolated wind events can still develop given the expected MLCapes under the relatively cool mid levels under the upper trough. Highs generally will be lower given the deep moisture and plentiful clouds/showers. Expect 80 to 85. Lows tonight should be 68-74 again. && .SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/... As of 245 AM Tuesday... The upper trough is expected to weaken and begin to lift out to the NE. However, it will be slow to do so. The main atmospheric river or plume of deep tropical moisture is forecast to move a bit more east with time. There may still be one more day into Wednesday evening of a flash flood threat. We may have to extend the Watch over portions of the area, mainly east, to cover this threat. A low level boundary or surface trough will remain in place. Heating will allow convection to fire again during the afternoon and evening hours, with locally heavy rain. Highs generally 83-88. Lows in the lower 70s Wednesday night with decreasing POP overnight. && .LONG TERM /THURSDAY THROUGH MONDAY/... As of 345 AM Tuesday... The upper trough will gradually lift out through late week, leaving behind a surface based lee trough that will be located over the eastern Piedmont/Sandhills. The chance of showers and thunderstorms will decrease to 30-40 percent Thursday and Friday (mainly during the afternoon and evening hours each day). With a more westerly flow aloft, more sunshine will bring hotter temperatures back to the area. Relatively high dew points in the upper 60s to lower 70s will keep it humid. Highs 90-95 (climatology from NW to S). Lows upper 60s to lower 70s. Stormy or wet weather is expected to return later this weekend and next week as another unseasonably strong mid/upper trough develops over the upper Midwest and Great Lakes. The presence of the "Bermuda high" along with the developing trough to our NW will tap a deep, moist, southerly flow into the region again next week. POP, QPF, and low temperatures rise, while daily highs lower as clouds/storms increase. && .AVIATION /14Z TUESDAY THROUGH SATURDAY/... As of 649 AM Tuesday... Occasional MVFR to IFR CIGS along with MVFR VSBYS with showers can be expected today. Otherwise, there will be periods of no significant weather along with MVFR to VFR CIGS will persist. Looking beyond 00z Wed, unsettled weather will hold through mid week. Numerous showers/storms will persist Tue night through Wed evening, producing areas of sub-VFR conditions and gusty surface winds. The greatest shower/storm coverage will shift east of our area starting late Wed night, although FAY and RWI may continue to see scattered to numerous storms each afternoon/evening, with a lesser chance further west at RDU/INT/GSO. && .RAH WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch through late tonight for NCZ007>011-021>028- 038>043-073>078-083>086-088-089. && SYNOPSIS...BADGETT/HAINES NEAR TERM...BADGETT/HAINES SHORT TERM...BADGETT LONG TERM...BADGETT/BSD AVIATION...BADGETT
Hazardous Weather Outlook National Weather Service Raleigh NC 257 AM EDT Tue Jul 24 2018 NCZ007>011-021>028-038>043-073>078-083>086-088-089-250700- Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake- Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Wayne-Anson- Richmond-Scotland-Hoke-Cumberland-Sampson- 257 AM EDT Tue Jul 24 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Showers and thunderstorms should become more scattered tonight and Wednesday, with the flooding threat becoming more localized and mainly over eastern North Carolina. The threat of heavy rainfall should ease on Thursday and Friday as the large upper trough weakens and shifts northeast. .SPOTTER INFORMATION STATEMENT... Spotters should report heavy rain amounts and any flooding to the National Weather Service. Badgett
The Roanoke radar (KFCX), 101 km away, was scanning. The volume nearest the first event began at 16:31 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain caused Mills Creek to overflow, flooding Conrad Sawmill Road near the intersection of Grapevine Road.
Heavy rain caused nearby creeks and streams to overflow their banks, flooding portions of Reynolda Road.
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, July 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: 776250, 776251.