Alert archive / South Carolina / Tornado Warnings in 2020
Tornado Warning 22, NWS Columbia, SC
NWS Columbia, SC issued this tornado warning at Sep 17, 2020, 11:01 AM EDT for Clarendon County, Sumter County, South Carolina. It was in force for 29 min. 3 reports 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
- Sep 17, 2020, 11:01 AM EDT (15:01 UTC)
- Expired
- Sep 17, 2020, 11:30 AM EDT
- In force
- 29 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Clarendon County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 84 km from the middle of the area, began a volume at 15:01 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 |
|---|---|---|---|
| Sep 17, 11:11 AM EDT | FUNNEL CLOUD | 2 Sse Paxville, SC | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SSE PAXVILLE. TRAINED SPOTTER REPORTED ROTATING WALL CLOUD SSE OF PAXVILLE. |
| Sep 17, 11:11 AM EDT | TSTM WND DMG | 2 Sse Paxville, SC | TRAINED SPOTTER REPORTED ROTATING WALL CLOUD SSE OF PAXVILLE. |
| Sep 17, 11:14 AM EDT | TORNADO | 4 E Paxville, SC | A NATIONAL WEATHER SERVICE STORM SURVEY TEAM CONFIRMED AN EF-0 TORNADO, WITH PEAK WIND SPEEDS OF 60 MPH, NORTHWEST OF MANNING IN CLARENDON COUNTY, SC. THE WEAK TORNADO SPLIT THE TRUCK OF A HARDWOOD TREE AND SNAPPED LARGE BRANCHES ON SEVERAL OTHER TREES ALONG B |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 17, 10:20 AM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 3.0 hours before the alert went out and 93 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
- 1154 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 652 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 188 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.7
The text
As transmitted.
018
WFUS52 KCAE 171501
TORCAE
SCC027-085-171530-
/O.NEW.KCAE.TO.W.0022.200917T1501Z-200917T1530Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
1101 AM EDT Thu Sep 17 2020
The National Weather Service in Columbia has issued a
* Tornado Warning for...
Central Clarendon County in central South Carolina...
Central Sumter County in central South Carolina...
* Until 1130 AM EDT.
* At 1100 AM EDT, a severe thunderstorm capable of producing a
tornado was located near Summerton, or 7 miles west of Manning,
moving northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Manning around 1115 AM EDT.
Alcolu around 1120 AM EDT.
Other locations impacted by this tornadic thunderstorm include Davis
Station, Brogdon, Gable and East Sumter.
This includes Interstate 95 between mile markers 110 and 132.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! If you are outdoors, in a mobile home, or in a
vehicle, move to an interior room or closet on the lowest floor of a
sturdy building immediately.
&&
LAT...LON 3358 8028 3362 8038 3392 8030 3384 8005
TIME...MOT...LOC 1500Z 208DEG 22KT 3367 8035
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
JAQ1 follow-up statement
457
WWUS52 KCAE 171518
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
1118 AM EDT Thu Sep 17 2020
SCC027-085-171530-
/O.CON.KCAE.TO.W.0022.000000T0000Z-200917T1530Z/
Clarendon SC-Sumter SC-
1118 AM EDT Thu Sep 17 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR NORTH
CENTRAL CLARENDON AND CENTRAL SUMTER COUNTIES...
At 1118 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Alcolu, or near Manning, moving northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
north central Clarendon and central Sumter Counties, including the
following locations... Brogdon, Gable and East Sumter.
This includes Interstate 95 between mile markers 120 and 132.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! If you are outdoors, in a mobile home, or in a
vehicle, move to an interior room or closet on the lowest floor of a
sturdy building immediately.
&&
LAT...LON 3367 8030 3369 8036 3392 8030 3384 8005
TIME...MOT...LOC 1518Z 208DEG 22KT 3377 8029
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
JAQThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 11:22 PM EDT | River Flood Advisory | CAE | Lexington, Richland | 46 hr |
| Sep 17, 7:56 AM EDT | Tornado Warning | CAE | Richland, Sumter | 34 min |
| Sep 17, 8:09 AM EDT | Tornado Warning | CAE | Calhoun, Richland, Sumter | 21 min |
| Sep 17, 8:30 AM EDT | Flash Flood Warning | CAE | Aiken, Edgefield, McCormick | 3 hr |
| Sep 17, 9:22 AM EDT | Flash Flood Warning | CAE | Aiken, Barnwell, Edgefield, McCormick, Newberry, Saluda | 3 hr |
| Sep 17, 9:33 AM EDT | Tornado Warning | CAE | Calhoun, Orangeburg | 27 min |
| Sep 17, 9:46 AM EDT | River Flood Warning | CAE | Calhoun, Lexington, Richland | 35 hr |
| Sep 17, 9:46 AM EDT | River Flood Warning | CAE | Calhoun, Richland | 3 days |
| Sep 17, 9:46 AM EDT | River Flood Warning | CAE | Edgefield, McCormick | 12 hr |
| Sep 17, 10:00 AM EDT | Tornado Warning | CAE | Calhoun, Clarendon, Orangeburg | 45 min |
| Sep 17, 10:28 AM EDT | Flash Flood Warning | CAE | Bamberg, Calhoun, Clarendon, Orangeburg, Richland, Sumter | 3 hr |
| Sep 17, 10:38 AM EDT | Flash Flood Warning | CAE | Aiken, Bamberg, Barnwell, Calhoun, Fairfield, Kershaw and 6 more | 3 hr |
| Sep 17, 10:44 AM EDT | Tornado Warning | CAE | Clarendon, Sumter | 46 min |
| Sep 17, 11:27 AM EDT | Tornado Warning | CAE | Lee, Sumter | 48 min |
| Sep 17, 11:44 AM EDT | Tornado Warning | CAE | Calhoun, Clarendon, Orangeburg, Sumter | 46 min |
| Sep 17, 12:06 PM EDT | Flash Flood Warning | CAE | Clarendon, Kershaw, Lee, Richland, Sumter | 3 hr |
| Sep 17, 12:39 PM EDT | Tornado Warning | CAE | Clarendon, Sumter | 33 min |
| Sep 17, 12:56 PM EDT | Tornado Warning | CAE | Calhoun, Clarendon, Orangeburg | 36 min |
| Sep 17, 1:11 PM EDT | Tornado Warning | CAE | Sumter | 49 min |
| Sep 17, 1:34 PM EDT | Flash Flood Warning | CAE | Calhoun, Clarendon, Orangeburg, Richland, Sumter | 3 hr |
| Sep 17, 2:37 PM EDT | Severe Thunderstorm Warning | CAE | Lee, Sumter | 23 min |
| Sep 17, 2:52 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 40 min |
| Sep 17, 3:02 PM EDT | Tornado Warning | CAE | Clarendon, Sumter | 28 min |
| Sep 17, 3:19 PM EDT | Flash Flood Warning | CAE | Clarendon, Lee, Sumter | 3 hr |
| Sep 17, 5:45 PM EDT | Areal Flood Advisory | CAE | Clarendon, Orangeburg, Sumter | 60 min |
| Sep 17, 6:08 PM EDT | Special Weather Statement | CAE | Clarendon | 22 min |
Nearby
Tornado Warnings in South Carolina, 2020Every tornado warning in 2020Tornadoes in 2020
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.