A weak frontal zone sat and wavered generally west to east across North Carolina. A mid level perturbation along with daytime heating spawned loosely organized thunderstorms, starting in the Triad region around in the mid to late afternoon and growing upscale and expanding across the Piedmont with an east-southeastward motion.
Every event with a place to put it. Tap one for its entry below.
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.
A weak frontal zone sat and wavered generally west to east across North Carolina. A mid level perturbation along with daytime heating spawned loosely organized thunderstorms, starting in the Triad region around in the mid to late afternoon and growing upscale and expanding across the Piedmont with an east-southeastward motion. Some of the strongest storms became severe and produced damaging wind gusts and large hail. Storms became outflow dominant and weakened as they headed into eastern portions of central North Carolina.
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 May 1, 1:55 PM EST, 7 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Raleigh NC 255 PM EDT Sun May 01 2022 .SYNOPSIS... A surface trough will approach from the west this afternoon and will drift SE into the area overnight. The surface trough will then stall out across central NC, while undergoing gradual weakening through Tuesday. && .NEAR TERM /TODAY THROUGH TONIGHT/... As of 255 PM Sunday... ...A Severe Thunderstorm Watch Has Been Issued for northern portions of the NC Piedmont and Coastal Plain counties through 9 pm... ...Damaging wind gusts and large hail will be the primary threat... Located on the leading, southern edge of the closed low and upper trough moving east into the Great Lakes and Ohio Valley, a string of convectively enhanced upper-level impulses are currently moving east across the central and southern Appalachians, and will move through the region during the late afternoon and evening hours. The warm front has lifted north into VA, leaving all of central NC firmly in the warm sector. The seasonably strong insolation, coupled with a weakening mid-level cap has allowed for moderate destabilization(MLCAPE 1050-2000 J/Kg) across the NC Piedmont counties. Thus far, the convection over the NC mtns is rather scattered. However, as the storms move into the more favorably unstable air over the western Piedmont, the convection could potentially congeal and become better organized. The convection and any severe threat is expected to weaken/decrease with loss of heating and as storms move east into a less favorable thermodynamic environment. With that said, it's difficult to ascertain just how far east and south the better risk of storms will extend. For now, the greatest threat appears to be across the NW Piedmont and Triad. Additionally, some of the models also indicate the potential for some secondary convective re-development during the late evening and overnight hours, as the weakening surface front and/or outflow drifts SE into the area. Thus, will hang on to PoPs well into the overnight hours. Pockets of higher rainfall amounts of 0.50-0.75" will be possible where the stronger convection across the NW Piedmont. Otherwise, rainfall amounts are expected to be spotty and generally light. Lows tonight in the upper 50s in the lower 60s. && .SHORT TERM /MONDAY AND MONDAY NIGHT/... As of 252 PM Sunday... Mid-level heights will quickly rebound on Monday as shortwave ridging spreads east into the area during the later half of the day. Meanwhile, a weak surface boundary/trough will meander across central NC. Low-level thicknesses are forecast to increase 5-8 meters compared to today, which should translate into 2 to 3 degrees or warming, highs in the mid to upper 80s, warmest south. Aside from some widely scattered seabreeze-related convection across the far SE zones, where capping is weaker and where the tongue of higher theta-e air will reside, expect dry conditions. Lows Monday night ranging from mid/upper 50s to lower/mid 60s south. && .LONG TERM /TUESDAY THROUGH SUNDAY/... As of 148 PM Sunday... The synoptic pattern at mid-levels will feature a mid-level shortwave over the Mid-Mississippi Valley early Tue, that will track into the Ohio Valley and Mid-Atlantic Tue night and early Wed. Ridging over the Carolinas will shift offshore during the day as weak impulses of energy track through NC in the aftn/eve in the southwest flow. At the surface, a weak surface trough will be draped from west to east across the Piedmont and northern Coastal Plain early Tue, lifting north into VA during the day. Strong surface heating with low-level thicknesses near 1410 m in the Sandhills and Piedmont will lead to very warm temperatures in the upper 80s to lower 90s. Current SSTs along the NC coast are in the upper 60s per 12Z RTOFS analysis, resulting in a temperature contrast of over 20 degrees. A favorable surface flow from the southwest will allow a sea-breeze to build inland over the Coastal Plain in the afternoon. In addition, guidance seems to be hinting on a Piedmont trough developing with the strong surface heating in the Sandhills, which could enhance convergence with the inland penetrating sea-breeze. This will lead to a good chance of showers/storms along/east of US-1 in the aftn/eve with MLCAPE upwards of 1500 J/kg and dewpoints in the lower 60s. Shear is not impressive, highest in the northern Coastal Plain of about 25 kts, but some isolated damaging winds are possible in the stronger cells. Additional convection is possible in the northwest Piedmont with the mid-level impulses tracking in from the southwest. Convection should dissipate in the late evening/overnight with loss of daytime heating. Overnight lows will be very mild, near record high minimums in the mid to upper 60s. On Wed, we are still tracking a surface cold front diving southeast from the Ohio Valley into the Carolinas by early Thu. The airmass is largely unchanged from Tue, with upper 80s to lower 90s still expected. The sea-breeze may again be a player, along with a Piedmont trough with the hot temperatures in the Sandhills, ahead of the cold front. Instability from the ECMWF EFI is showing some anomalous values, with the deterministic models indicating SBCAPE values upwards of 2500 J/kg. While shear is marginal, these conditions would support hail and locally damaging winds. Otherwise, expect convection to develop in the aftn/eve, tapering off by late evening/overnight with the passage of the trough axis/front. Thu-Sun: There remains uncertainty with the passage of the cold front, with the GFS continuing its trend of keeping the front only along the VA border early Thu, while the previous ECMWF/Canadian bring it further south along central SC. The latter models have support from the ensemble guidance, indicating drier conditions and the next mid-level trough well west of NC in the central Plains as opposed to the GFS position over the Midwest. Have kept Thu mainly dry as a result, consistent with previous forecast package, and temperatures cooler in the low to upper 80s. The best chance of showers/storms appears Fri-Sat as model/ensemble consensus is appearing to converge on the mid-level trough over the central Plains to shift into the OH/TN Valley Fri night and Mid- Atlantic/Carolinas Sat, eventually offshore sometime Sunday. There remain differences on timing and pattern/orientation of the trough amongst the ensemble guidance, but good forcing for ascent and divergence aloft looks to be in place late Fri and Sat. As for severe potential, details will largely depend on the overall setup, but stronger deep-layer shear and favorable instability could support severe storms late Fri-early Sat with an approaching front and a possible surface low tracking along NC/VA. Temperatures should trend from above average to below normal from the 70s/80s Fri to the 70s by Sun with clouds/precipitation and a cooler airmass behind the front. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... As of 140 PM Sunday... A cluster of storms is expected to develop over western NC and move east near the VA/NC border this afternoon into this evening, most likely affecting KINT/KGSO between 20-00z, then KRDU from 00-04z, then finally KRWI from 01-05z. The southern extent of this cluster of storms remains uncertain, but may reach KFAY between 03-07z. Some guidance indicates showers/storms lingering over the area through 09z, but confidence is low on the location/intensity of these lingering showers/storms given they will be dependent on the evolution of the earlier cluster of storms. Skies will briefly clear behind the exiting storm system before MVFR/IFR fog/stratus develops over areas in which had the most rainfall, giving KGSO/KINT/KRDU the best chance to see this solution develop. VFR conditions will return for the remainder of the TAR period after the fog/stratus burns off shortly after sunrise Monday morning. Looking beyond 18z Monday, an active pattern is beginning to emerge through Friday. Diurnal showers/storms will be possible Tuesday with more widespread showers/storms on Wednesday as a cold front moves through. Aviation restrictions will again be possible on Friday as showers/storms will start to overspread the area as a storm system moves through the OH/TN Valley. && .RAH WATCHES/WARNINGS/ADVISORIES... None. && SYNOPSIS...CBL/Kren NEAR TERM...CBL SHORT TERM...CBL LONG TERM...Kren AVIATION...Swiggett/CBL
Hazardous Weather Outlook National Weather Service Raleigh NC 144 PM EDT Sun May 1 2022 NCZ007>011-021>028-038>041-043-076-021745- Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake- Wilson-Lee- 144 PM EDT Sun May 1 2022 ...SEVERE THUNDERSTORM WATCH 167 IN EFFECT UNTIL 9 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ042-073>075-077-078-083>086-088-089-021745- Johnston-Stanly-Montgomery-Moore-Harnett-Wayne-Anson-Richmond- Scotland-Hoke-Cumberland-Sampson- 144 PM EDT Sun May 1 2022 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...This afternoon and tonight. An isolated strong to severe storm is possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
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</html>The Roanoke radar (KFCX), 104 km away, was scanning. The volume nearest the first event began at 18:59 UTC.
7 hail, 4 thunderstorm wind. Local standard time, as filed.
Quarter size hail was reported near Monticello, near the intersection of Caber Rd and Summit Ridge Dr.
Quarter size hail was reported near Monticello, near the intersection of Turner Smith Rd and Turner N Drive.
Quarter size hail was reported near Altamahaw, near the intersection of NC Highway 87 and Stoney Creek Church Rd.
Half dollar size hail was reported near Haw River, near the intersection of E Main St and Norris Mobile Ests MHP.
Quarter size hail was reported near Efland - Cedar Grove Road and McGown Creek Road.
A tree fell on powerlines near the intersection of Old Walden Rd and Old US 421 S.
A power outage was caused by fallen trees damaging the power equipment, near the intersection of Infinity Rd and Seterra Bend in Durham.
A tree fell on powerlines near the intersection of Fayetteville Street and West Street in Pittsboro.
Ping Pong ball size hail was reported near Morven, near the intersection of Burch St and Mill St.
A power outage was caused by objects coming in contact with power lines in Corinth, near the intersection of NC Highway 42 and Buckhorn Rd.
Quarter size hail was reported near Holly Springs, near the intersection of Avent Ferry Rd and Buckhorn Duncan Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2022Every state in 2022This day in weather historyWarnings in North Carolina, May 2022
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 2026-09-30. Each event’s entry at NCEI: 1026192, 1026193, 1026194, 1026195, 1026197, 1028227, 1028230, 1028228, 1026198, 1028229, 1026199.