Alert archive / Georgia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 41, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jul 18, 2021, 12:17 PM EDT for Screven County, Georgia; Allendale County, South Carolina. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 18, 2021, 12:17 PM EDT (16:17 UTC)
- Expired
- Jul 18, 2021, 1:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Screven County, GA, Allendale County, SC
The radar
The Charleston,SC radar (KCLX), 59 km from the middle of the area, began a volume at 16:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 12:25 PM EDT | TSTM WND DMG | 5 Sse Hilltonia, GA | THE SCREVEN COUNTY WARNING POINT REPORTED A TREE DOWN NEAR THE INTERSECTION OF HIGHWAY 301 AND HIGHWAY 24. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 4.3 hours before the alert went out and 145 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.
733
WUUS52 KCHS 181617
SVRCHS
GAC251-SCC005-181700-
/O.NEW.KCHS.SV.W.0041.210718T1617Z-210718T1700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
1217 PM EDT Sun Jul 18 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Screven County in southeastern Georgia...
Allendale County in southeastern South Carolina...
* Until 100 PM EDT.
* At 1215 PM EDT, severe thunderstorms were located along a line
extending from near Hiltonia to near Sylvania, moving northeast at
30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. At 1214 PM a power line was knocked down
near Hiltonia.
IMPACT...Expect damage to trees and powerlines.
* Locations impacted include...
Sylvania, Hiltonia, Altman, Hilltonia, Millett, Martin, Millhaven
and Burtons Ferry Landing.
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 3312 8149 3278 8135 3264 8160 3292 8175
3304 8156 3305 8157 3306 8157
TIME...MOT...LOC 1615Z 231DEG 27KT 3290 8171 3274 8170
HAIL...<.75IN
WIND...60MPH
$$
MTE1 follow-up statement
891
WWUS52 KCHS 181656
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
1256 PM EDT Sun Jul 18 2021
GAC251-SCC005-181706-
/O.EXP.KCHS.SV.W.0041.000000T0000Z-210718T1700Z/
Screven GA-Allendale SC-
1256 PM EDT Sun Jul 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF SCREVEN AND
ALLENDALE COUNTIES WILL EXPIRE AT 100 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.
LAT...LON 3312 8149 3278 8135 3264 8160 3292 8175
3304 8156 3305 8157 3306 8157
TIME...MOT...LOC 1656Z 231DEG 27KT 3309 8143 3293 8142
$$
MTEThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 3:09 PM EDT | Severe Thunderstorm Warning | CHS | Bryan, Chatham | 55 min |
| Jul 18, 4:22 PM EDT | Special Weather Statement | CHS | Liberty | 23 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 |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.