Alert archive / Georgia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jul 18, 2021, 3:09 PM EDT for Jasper County, South Carolina; Bryan County, Chatham County, Georgia. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2021, 3:09 PM EDT (19:09 UTC)
- Expired
- Jul 18, 2021, 4:04 PM EDT
- In force
- 55 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bryan County, GA, Chatham County, GA, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 69 km from the middle of the area, began a volume at 19:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.2 hours before the alert went out and 136 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 962 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
900
WUUS52 KCHS 181909
SVRCHS
GAC029-051-SCC053-182015-
/O.NEW.KCHS.SV.W.0043.210718T1909Z-210718T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
309 PM EDT Sun Jul 18 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Bryan County in southeastern Georgia...
Chatham County in southeastern Georgia...
Jasper County in southeastern South Carolina...
* Until 415 PM EDT.
* At 309 PM EDT, a severe thunderstorm was located over Hunter Army
Airfield, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
* Locations impacted include...
Pooler, Bluffton, Richmond Hill, Tybee Island, Wilmington Island,
Fort Pulaski National Monument, Bellinger Hill Area, Midtown
Savannah, Downtown Savannah, Coffee Bluff, I-16/I-95 Interchange,
Hunter Army Airfield, Savannah International Airport, Montgomery
and Garden City.
This warning includes the following interstates:
I-16 between mile markers 159 and 168.
I-516 between mile markers 3 and 9.
I-95 in Georgia between mile markers 88 and 95, and between mile
markers 100 and 101.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3183 8126 3196 8136 3203 8125 3208 8125
3226 8105 3219 8100 3217 8095 3213 8096
3213 8092 3212 8093 3211 8089 3208 8091
3208 8087 3210 8085 3206 8085 3199 8082
3198 8082 3186 8115 3190 8118 3186 8116
TIME...MOT...LOC 1909Z 237DEG 17KT 3202 8116
HAIL...1.00IN
WIND...60MPH
$$3 follow-up statements
680
WWUS52 KCHS 181948
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
348 PM EDT Sun Jul 18 2021
GAC029-051-SCC053-182015-
/O.CON.KCHS.SV.W.0043.000000T0000Z-210718T2015Z/
Bryan GA-Chatham GA-Jasper SC-
348 PM EDT Sun Jul 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR BRYAN...CHATHAM AND JASPER COUNTIES...
At 348 PM EDT, a severe thunderstorm was located over White Bluff,
moving east at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include...
Pooler, Bluffton, Richmond Hill, Tybee Island, Wilmington Island,
Fort Pulaski National Monument, Midtown Savannah, Downtown Savannah,
Coffee Bluff, I-16/I-95 Interchange, Hunter Army Airfield, Bellinger
Hill Area, Montgomery, Garden City and Thunderbolt.
This warning includes the following interstates:
I-16 between mile markers 159 and 168.
I-516 between mile markers 3 and 9.
I-95 in Georgia near mile marker 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3183 8126 3191 8132 3194 8126 3201 8128
3203 8125 3208 8125 3217 8096 3217 8095
3213 8096 3213 8092 3212 8093 3211 8090
3208 8091 3208 8087 3210 8085 3206 8085
3198 8082
TIME...MOT...LOC 1948Z 259DEG 8KT 3199 8111
HAIL...<.75IN
WIND...60MPH
$$368
WWUS52 KCHS 181957
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
357 PM EDT Sun Jul 18 2021
SCC053-182007-
/O.CAN.KCHS.SV.W.0043.000000T0000Z-210718T2015Z/
Jasper SC-
357 PM EDT Sun Jul 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR JASPER COUNTY IS CANCELLED...
The immediate risk for severe weather has ended.
LAT...LON 3183 8126 3191 8132 3194 8126 3201 8128
3203 8125 3208 8125 3210 8108 3209 8107
3203 8104 3191 8104
TIME...MOT...LOC 1957Z 262DEG 5KT 3198 8114
$$
GAC029-051-182015-
/O.CON.KCHS.SV.W.0043.000000T0000Z-210718T2015Z/
Bryan GA-Chatham GA-
357 PM EDT Sun Jul 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR BRYAN AND CHATHAM COUNTIES...
At 357 PM EDT, a severe thunderstorm was located over Windsor Forest,
moving east at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include...
Pooler, Richmond Hill, I-16/I-95 Interchange, Hunter Army Airfield,
Midtown Savannah, Downtown Savannah, Coffee Bluff, Montgomery, Garden
City, Thunderbolt, Vernonburg, Fort Mcallister, Sandfly, Savannah
Historic District and Windsor Forest.
This warning includes the following interstates:
I-16 between mile markers 159 and 168.
I-516 between mile markers 3 and 8.
I-95 in Georgia near mile marker 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3183 8126 3191 8132 3194 8126 3201 8128
3203 8125 3208 8125 3210 8108 3209 8107
3203 8104 3191 8104
TIME...MOT...LOC 1957Z 262DEG 5KT 3198 8114
HAIL...<.75IN
WIND...60MPH
$$504
WWUS52 KCHS 182004
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
404 PM EDT Sun Jul 18 2021
GAC029-051-182014-
/O.CAN.KCHS.SV.W.0043.000000T0000Z-210718T2015Z/
Bryan GA-Chatham GA-
404 PM EDT Sun Jul 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF BRYAN AND CHATHAM
COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.
LAT...LON 3183 8126 3191 8132 3194 8126 3201 8128
3203 8125 3208 8125 3210 8108 3209 8107
3203 8104 3191 8104
TIME...MOT...LOC 2002Z 237DEG 17KT 3200 8111
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:17 PM EDT | Severe Thunderstorm Warning | CHS | Allendale | 43 min |
| Jul 18, 1:29 PM EDT | Special Weather Statement | CHS | Bamberg | 31 min |
| Jul 18, 2:11 PM EDT | Special Weather Statement | CHS | Berkeley | 34 min |
| Jul 18, 2:49 PM EDT | Special Weather Statement | CHS | Jasper | 26 min |
| Jul 18, 3:04 PM EDT | Severe Thunderstorm Warning | CHS | Beaufort, Colleton | 41 min |
| Jul 18, 3:17 PM EDT | Special Weather Statement | CHS | Berkeley | 28 min |
| Jul 18, 11:11 AM EDT | Special Weather Statement | CHS | Jenkins | 34 min |
| Jul 18, 11:17 AM EDT | Severe Thunderstorm Warning | CHS | Bulloch, Jenkins | 43 min |
| Jul 18, 11:43 AM EDT | Severe Thunderstorm Warning | CHS | Bulloch, Jenkins, Screven | 62 min |
| Jul 18, 12:41 PM EDT | Special Weather Statement | CHS | Screven | 34 min |
| Jul 18, 4:22 PM EDT | Special Weather Statement | CHS | Liberty | 23 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2021Severe Thunderstorm Warnings in South Carolina, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.