Thunderstorms developed along the sea breeze on the coast of southeast Georgia in the early afternoon hours. The thunderstorms then gradually shifted further inland along outflow boundaries.
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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 CHS wrote it up.
Thunderstorms developed along the sea breeze on the coast of southeast Georgia in the early afternoon hours. The thunderstorms then gradually shifted further inland along outflow boundaries. These thunderstorms produced damaging wind gusts.
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 Charleston, SC wrote its last area forecast discussion before the first event at Jul 19, 3:09 PM EST, 0 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 409 PM EDT Tue Jul 19 2022 .SYNOPSIS... A trough will linger near the area through Wednesday. A cold front will drop into the area Thursday night, then dissipate Friday. High pressure will build in for the weekend. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... Through This Evening: Radar indicates several areas of convection across our area, generally moving towards the coast. A mid-level trough is currently approaching from the northwest, which is leading to broad scale lift and helping to initiate and maintain the convection. Additionally, there is a weak jet streak nearby. At the surface, the sea breeze didn't have much luck moving inland because it faced resistance from the westerly winds. SPC Mesoscale Analysis indicates 2,000-2,500 J/Kg of MLCAPE for the next few hours. Effective bulk shear values are around 25 kt. Closer to the coast, DCAPEs are higher, exceeding 800 J/kg. With all of this in mind, a few organized storms producing marginally severe wind gusts are possible. PWATs are ~2", which is leading to heavy rainfall. Luckily, the storms are moving fast enough to limit the heavy rainfall and flooding risk. But if the storms significantly slow down and/or backbuild closer to the coast, then we could have flooding issues, especially in the lower-lying and poorly drained areas. Tonight: The worst of the convection is expected to move out to sea and dissipate later in the evening. However, some of the CAMs and synoptic models hint at another round of convection approaching from the west and moving through our area overnight. The problem is each model has significant differences in the timing, coverage, and intensity. Plus, they're highly dependent on what happens during the early evening. Given all of the uncertainty, we were forced to go with chance or slight chance POPs for most of the area, gradually having them trend lower overnight. But this aspect of the forecast will need to be adjusted with future updates. Otherwise, lows will be close to normal, generally in the 70s. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... Wednesday: The upper trough axis will advance toward the east coast. To start the day, a few showers/thunderstorms could develop over or move into inland counties. Then, with diurnal warming/ destabilization, this feature should again help to support at least scattered thunderstorms which should move from west/northwest toward the east/northeast especially during the afternoon/evening. An environment featuring effective bulk shear values 15-25 knots could promote persistent multicell thunderstorms which could produce brief/localized strong wind gusts. Despite PWAT values at least 2 inches, thunderstorms/associated heavy rainfall should not in most cases linger for long over the same locations. Outside of thunderstorms, expect typically hot and humid conditions with maximum heat index values 100-105F at many locations. Thursday: The upper trough will linger over the region. However, lower/mid tropospheric flow/associated shear should be significantly reduced as compared with Tuesday/Wednesday, so scattered thunderstorms which develop along the sea breeze and other mesoscale boundaries within the typically hot/humid air mass will propagate more slowly/erratically. This scenario, featuring PWAT values over 2 inches and somewhat elevated moisture transport should increase the probability for locally heavy rainfall. Outside of thunderstorms, heat index values could push into the 105-109F range at many locations, especially along/east of I-95. Friday: The weakening upper trough will persist over the region, while a surface cold front will approach the region from the northwest. Within the ongoing moist air mass, this scenario should readily promote diurnal thunderstorm development, and latest guidance depicts likely PoPs Friday afternoon/evening across a wide swath of inland counties. Weak flow/shear will support locally heavy rainfall and perhaps a couple of brief/damaging wet microbursts. Greater cloud cover/precipitation coverage could result in temperatures a couple of degrees lower than those of Thursday. However, due to dewpoints at least in the middle to upper 70s, maximum heat index values could still top out in the 102-107F range at many locations, especially along/east of I-95. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... The cold front will stall and dissipate north of the region early this week, then upper ridges over the Atlantic and west of the region will expand and bridge/combine over our region well into next week. This pattern will maintain typically hot/humid conditions and should result in a subtle decrease in coverage of diurnal/mainly sea breeze thunderstorms. && .AVIATION /20Z TUESDAY THROUGH SUNDAY/... 20Z Update: Radar indicates convection increasing across our area and this trend is expected to continue for the next few hours. Brief MVFR or possibly IFR is possible at all of our TAF sites during the TEMPO groups. But amendments may still be needed based on future radar trends. The worst of the convection is expected to dissipate later this evening. Though, some models hint at another round of convection overnight. Given the uncertainty with this, we're maintaining VFR for the latter half of the TAF time period. Extended Aviation Outlook: Periodic flight restrictions are possible at KCHS/KJZI/KSAV during showers/thunderstorms each afternoon/evening. Also, MVFR ceilings could occur as diurnal cumulus develops within a moist air mass each morning. && .MARINE... Through Sunset: Convection moving through portions of the waters is expected to bring wind gusts exceeding 34 kt and frequent cloud to water lightning. Tonight: A surface trough inland and high pressure in the Atlantic should maintain elevated winds across the waters. The strongest winds are across the Charleston County waters, which is where we have a Small Craft Advisory in effect for wind gusts. However, winds here have been a few kt lower than anticipated and the current forecast has them easing sooner. For this reason, we expect the Small Craft Advisory to expire this evening. Otherwise, SW winds will persist, easing to around 15 kt by daybreak Wednesday. Seas will average 3-5 ft. Through Wednesday, thunderstorms with gusty winds could advance from land into coastal waters. mariners should remain alert for Special Marine warnings and Marine Weather Statements. Otherwise, outside thunderstorms Wednesday through Sunday primary concerns focus on the potential for fairly widespread Small Craft Advisory winds Wednesday night through Thursday night and perhaps into Friday, with S/SW gusts at least 25 knots and seas 3-5 feet becoming common during this period. Thereafter, winds/seas should transition to sub-SCA levels more typical of mid-summer, with daily maximum winds close to the coast within the daily sea breeze. Rip Currents: Elevated S/SW winds and a small swell are expected to produce a Moderate Risk for rip currents on all beaches through Thursday. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...Small Craft Advisory until 9 PM EDT this evening for AMZ350. && NEAR TERM... SHORT TERM...SPR LONG TERM...SPR AVIATION...SPR MARINE...SPR
Hazardous Weather Outlook National Weather Service Charleston SC 341 PM EDT Tue Jul 19 2022 AMZ330-350-352-354-374-GAZ087-088-099>101-114>116-118-137-138-140- SCZ040-042>045-047-052-201945- Charleston Harbor- Waters from South Santee River to Edisto Beach SC out 20 NM- Waters from Edisto Beach SC to Savannah GA out 20 NM- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans- Inland Bryan-Inland Chatham-Long-Inland Liberty-Inland McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Tidal Berkeley- 341 PM EDT Tue Jul 19 2022 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. GAZ117-119-139-141-SCZ048>051-201945- Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh- Beaufort-Coastal Colleton-Charleston-Coastal Jasper- 341 PM EDT Tue Jul 19 2022 ...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH WEDNESDAY EVENING... This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Moderate Risk for Rip Currents. .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 for Rip Currents. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
Special Weather Statement
National Weather Service Charleston SC
134 PM EDT Tue Jul 19 2022
GAZ099-100-115-191800-
Evans-Bulloch-Candler-
134 PM EDT Tue Jul 19 2022
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EVANS, BULLOCH AND
CANDLER COUNTIES...
At 133 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm near Nevils, or 8 miles northeast of Claxton,
moving east at 35 mph.
HAZARD...strong winds 45 to 55 mph.
SOURCE...Radar Indicated.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
Brooklet, Register, Denmark, Nevils, Bay and Stilson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3237 8195 3241 8154 3236 8151 3235 8149
3234 8149 3233 8147 3223 8147 3218 8165
3220 8198
TIME...MOT...LOC 1733Z 268DEG 29KT 3227 8183
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
SPRSpecial Weather Statement
National Weather Service Charleston SC
324 PM EDT Tue Jul 19 2022
SCZ044-045-049-050-052-192015-
Inland Berkeley-Coastal Colleton-Tidal
Berkeley-Charleston-Dorchester-
324 PM EDT Tue Jul 19 2022
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON, COLLETON,
BERKELEY AND DORCHESTER COUNTIES...
At 323 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Maybank Bridge, or near West Ashley, moving
east at 25 mph.
HAZARD...strong winds 45 to 55 mph.
SOURCE...Radar Indicated.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
North Charleston, Mount Pleasant, Goose Creek, Hanahan, Edisto Beach,
Downtown Charleston, West Ashley and Daniel Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm and may lead to
flooding of low lying and poor drainage areas. Do not drive your
vehicle through flooded roadways.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3284 7963 3274 7983 3266 7986 3259 7997
3252 8015 3253 8021 3247 8030 3258 8058
3277 8038 3293 8016 3304 7956
TIME...MOT...LOC 1923Z 274DEG 22KT 3276 8004
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
BSHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
337 PM EDT TUE JUL 19 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0334 PM MARINE TSTM WIND 2 ESE CHARLESTON 32.77N 79.91W
07/19/2022 M40 MPH AMZ330 SC MESONET
&&
EVENT NUMBER CHS2200992
SPRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
348 PM EDT TUE JUL 19 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0344 PM MARINE TSTM WIND 2 ESE CHARLESTON 32.77N 79.91W
07/19/2022 M43 MPH AMZ330 SC MESONET
&&
EVENT NUMBER CHS2200993
SPRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
353 PM EDT TUE JUL 19 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0350 PM MARINE TSTM WIND 4 ESE CHARLESTON 32.75N 79.87W
07/19/2022 M39 MPH AMZ330 SC MESONET
&&
EVENT NUMBER CHS2200994
SPRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
408 PM EDT TUE JUL 19 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0340 PM MARINE TSTM WIND 1 S MOUNT PLEASANT 32.77N 79.87W
07/19/2022 M40 MPH AMZ330 SC PUBLIC
TEMPEST STATION AT CHARLESTON HARBOR EAST MEASURED A
WIND GUST OF 40 MPH OR 35 KTS.
&&
EVENT NUMBER CHS2200995
NEDThe Charleston,SC radar (KCLX), 122 km away, was scanning. The volume nearest the first event began at 20:07 UTC.
1 thunderstorm wind. Local standard time, as filed.
The public reported a few trees down on vehicles and a trampoline tossed into a home next door along Old Anderson Cemetery Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2022Every state in 2022This day in weather historyWarnings in Georgia, July 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 2026-09-24. Each event’s entry at NCEI: 1042906.