A warm and moist airmass in combination with a passing low pressure trough and embedded mid-level shortwave created and environment favorable for strong to severe thunderstorms across Southeast Georgia.
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 CHS wrote it up.
A warm and moist airmass in combination with a passing low pressure trough and embedded mid-level shortwave created and environment favorable for strong to severe thunderstorms across Southeast Georgia.
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 Jun 2, 3:27 PM EST, 35 minutes earlier.
Area Forecast Discussion National Weather Service Charleston SC 427 PM EDT Sat Jun 2 2018 .SYNOPSIS... A warm and humid air mass will linger across the region through the rest of this weekend. A cold front is forecast to sweep across southeast South Carolina and Georgia late Sunday night into Monday morning. In the wake of the front, a drier air mass is expected to build across the Southeast U.S. through early next week. During the mid to late week, conditions are expected to see gradual increases in deep moisture. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... There is a Severe Thunderstorm Watch in effect for most of our area until 8 PM this evening. Radar shows a line of showers and thunderstorms moving across our area. This matches up well with GOES water vapor imagery and short-term models which have a mid-level disturbance currently moving over our area. This is providing a forcing mechanism for the storms. Additionally, radar and satellite observations show the sea breeze is starting to move inland, especially along the SC coast. This will help to initiate storms along SC, and enhance the storms in GA. CAM's have consistently been pointing to the inland storms forming into a line over the next few hours and pushing towards the coast. This matches up with what radar has been showing. MLCAPES ~2,000 J/kg are located here along with low level lapse rates of -7 C and plenty of moisture in the form of PWATs >1.5". But shear remains the limiting factor for a widespread severe event with 0-6km bulk shear 15-25 kt. The main risk remains damaging winds as DCAPEs are good at 1,000-1,200 J/kg. Tonight: Convection will gradually wind down and push off the lower South Carolina coast during the evening hours. The speed in which this occurs will be dependent on how organized afternoon convection can become. Rain chances will diminish through the night and debris cloudiness will steadily thin with time. Could see some shallow ground fog and stratus develop where winds drop off enough, but this is not expected to be significant. Lows will range from the lower 70s inland to the mid 70s at the beaches, but rain-cooled air could push lows down even further. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY/... Northwesterly flow aloft will prevail through the period as a deep upper low develops across New England. Sunday: In the wake of a upper level trough that will be situated over the western Atlantic, sinking motion, lower amounts of tropospheric moisture, and downslope low level flow off the Appalachians should severely limit rain chances for much of the day. All of the available guidance has trended drier on Sunday and have lowered rain chances some but current thinking is that mention of precipitation might not even be needed on Sunday. As a decent cold front advances toward the area Sunday night any convection that develops well northwest of the area with the front Sunday may be able to move into especially northern areas. Maintained low end chance of precipitation for most areas Sunday night. Highs on Sunday should reach into the lower and mid 90s in many area as the sea breeze will likely be pinned to the coast for much of the day. Mild lows are expected Sunday night, mainly in the lower to mid 70s. Monday and Tuesday: Surface high pressure will build into the area and this will result in lower temperatures and dewpoints compared to those from Sunday. Limited moisture in the mid and upper level, modest moisture in the low levels, downslope flow, general sinking motion in the wake of the western Atlantic trough and limited low level focus preclude the mention of precipitation in the forecast. Highs will be near 90 on Monday and mid to upper 80s on Tuesday. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... A broad trough will ripple over the region Wednesday through the rest of the work week. GFS indicates that a S/W will amplify over the southern Appalachians on Saturday. At the sfc, weak return flow should supply the region with gradual increases in moisture and instability. I will forecast diurnal SCHC PoPs through the late work week. However, chances are expected to increase on Saturday as a weak warm front lifts across the forecast area. High temperatures on Saturday will feature near 90s across SE GA. && .AVIATION /20Z SATURDAY THROUGH THURSDAY/... KCHS: Mainly VFR. Synoptic models still keep the worst of the convective coverage south of the terminal into this evening. However, hi-res models still have some storms developing nearby and then impacting the terminal. Given the ongoing uncertainty at this point, we are continuing VCTS from 20-00Z. However, if radar trends continue, we may need to amend to add a TEMPO towards the second half of this time period. Any direct impacts would lead to brief IFR visibilities in +TSRA, gusty winds, and maybe even some small hail. Later this evening, storms will move offshore and dissipate, allowing conditions to improve and VFR to prevail. KSAV: Radar indicates showers and thunderstorms nearby the airport, with a stronger band approaching. Both radar trends and hi-res models have the worst conditions from roughly 20-23Z. This is when we have a TEMPO for IFR, mainly due to visibilities in +TSRA. Gusty winds are also possible. VCTS is possible until about 00Z, but we continue to wait for better radar trends to adjust this end time in the TAF. Conditions will quickly improve this evening, with VFR prevailing. Extended Aviation Outlook: Mainly VFR conditions expected through late next week. A brief period of sub VFR conditions is possible Sunday afternoon and/or Sunday evening if any showers or thunderstorms immediately impact the terminals. Also, a brief period of fog or ground fog is possible during the pre-dawn hours each morning, especially Tuesday and Wednesday. && .MARINE... Into this Evening: There is a Severe Thunderstorms Watch for our waters out 20 nm until 8 PM this evening. Thunderstorms will produce gusty winds exceeding 34 kt with maybe even some small hail. Tonight: Thunderstorms will dissipate across the waters. Expect SW winds 10-15 kt to prevail with seas 2-4 ft. Sunday through Wednesday: In advance of a cold front, winds on Sunday will be from the southwest. Scattered showers and thunderstorms are expected, mainly Sunday night as the cold front approaches and then moves through. Winds will turn northwest and perhaps north behind the front Monday morning and then fairly quickly become light and variable by later Monday and Monday night and persist into mid week. Seas will mainly be 2 to 3 feet Sunday and Sunday night then decreasing to mainly 1 to 2 feet through mid week. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM... SHORT TERM... LONG TERM... AVIATION... MARINE...
Hazardous Weather Outlook National Weather Service Charleston SC 429 PM EDT Sat Jun 2 2018 AMZ374-GAZ087-032030- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM-Jenkins- 429 PM EDT Sat Jun 2 2018 This Hazardous Weather Outlook is for Atlantic coastal waters and southeast Georgia. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. AMZ330-350-352-354-GAZ088-099>101-114>119-137>141-SCZ040-042>045- 047>052-032030- 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-Screven-Candler-Bulloch- Effingham-Tattnall-Evans-Inland Bryan-Coastal Bryan-Inland Chatham- Coastal Chatham-Long-Inland Liberty-Coastal Liberty-Inland McIntosh- Coastal McIntosh-Allendale-Hampton-Inland Colleton-Dorchester- Inland Berkeley-Inland Jasper-Beaufort-Coastal Colleton-Charleston- Coastal Jasper-Tidal Berkeley- 429 PM EDT Sat Jun 2 2018 ...SEVERE THUNDERSTORM WATCH 150 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for Atlantic coastal waters, 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. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
Special Weather Statement
National Weather Service Charleston SC
436 PM EDT SAT JUN 2 2018
GAZ100-101-SCZ047-022115-
Bulloch-Effingham-Inland Jasper-
436 PM EDT SAT JUN 2 2018
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BULLOCH...EFFINGHAM
AND JASPER COUNTIES...
At 436 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Guyton, or near Springfield, moving east at
45 mph.
HAZARD...strong winds 45 to 55 mph, up to penny sized hail and
excessive cloud to ground lightning.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects. Minor hail damage to plants,
trees and crops is possible. Damage to windshields is
unlikely. All outdoor activities should cease. Move
indoors immediately.
Some locations in the path of this storm include...
Springfield, Rincon, Hardeeville, Guyton, Purysburgh, Pineora,
Ebenezer and Marlow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3241 8151 3247 8110 3224 8109 3222 8143
3223 8142 3224 8144 3224 8146
TIME...MOT...LOC 2036Z 261DEG 39KT 3233 8139PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
439 PM EDT SAT JUN 02 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0432 PM HAIL SAVANNAH 32.05N 81.08W
06/02/2018 E0.25 INCH CHATHAM GA TRAINED SPOTTER
SPOTTER REPORTED PEA SIZE HAIL NEAR INTERSECTION OF
35TH AND PAULSEN ST.
&&
EVENT NUMBER CHS1800391
JRL<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The Charleston,SC radar (KCLX), 25 km away, was scanning. The volume nearest the first event began at 21:02 UTC.
8 thunderstorm wind, 1 hail. Local standard time, as filed.
The Jasper County 911 Call Center reported a tree down on I-95 southbound near mile marker 15.
The South Carolina Highway Patrol reported a tree down on Bees Creek Road near Scarlett Ibis Drive.
The Colleton County 911 Call Center reported two trees down along with power lines and hail of unknown size along Sidney's Road.
A report via social media indicated multiple trees down near the 2300 block of McDanieltown Road.
The Colleton County 911 Call Center reported trees and a power pole down near the intersection of north Jefferies Boulevard and Ivanhoe Road.
The Charleston County 911 Call Center reported a tree snapped off and power lines down along Bexley Street in North Charleston.
The media reported one tree down on Brockington Avenue and two power lines down on Ashley River Road.
The Charleston County 911 Call Center reported traffic lights blown down on North Rhett Avenue near the Mark Clark Expressway.
A trained spotter reported penny size hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2018Every state in 2018This day in weather historyWarnings in South Carolina, June 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 2026-10-01. Each event’s entry at NCEI: 770284, 770286, 770287, 770292, 770305, 770323, 770331, 770336, 770275.