Alert archive / South Carolina / Tornado Warnings in 2017
Tornado Warning 30, NWS Columbia, SC
NWS Columbia, SC issued this tornado warning at Oct 23, 2017, 4:10 PM EDT for Calhoun County, Orangeburg County, South Carolina. It was in force for 35 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
- Oct 23, 2017, 4:10 PM EDT (20:10 UTC)
- Expired
- Oct 23, 2017, 4:45 PM EDT
- In force
- 35 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Calhoun County, SC, Orangeburg County, SC
The radar
The Columbia radar (KCAE), 58 km from the middle of the area, began a volume at 20:09 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 23, 2:00 PM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 8.2 hours before the alert went out and 105 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
- 252 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 739 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted.
563
WFUS52 KCAE 232010
TORCAE
SCC017-075-232045-
/O.NEW.KCAE.TO.W.0030.171023T2010Z-171023T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
410 PM EDT MON OCT 23 2017
The National Weather Service in Columbia has issued a
* Tornado Warning for...
West central Calhoun County in central South Carolina...
Central Orangeburg County in central South Carolina...
* Until 445 PM EDT
* At 410 PM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Bamberg, moving north at 35 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...
Orangeburg and Brookdale around 430 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Wilkinson Heights, Cordova, Edisto and Cope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3333 8094 3335 8101 3368 8093 3361 8073
TIME...MOT...LOC 2010Z 199DEG 30KT 3338 8096
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
CJR3 follow-up statements
841
WWUS52 KCAE 232021
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
421 PM EDT MON OCT 23 2017
SCC017-075-232045-
/O.CON.KCAE.TO.W.0030.000000T0000Z-171023T2045Z/
Calhoun SC-Orangeburg SC-
421 PM EDT MON OCT 23 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR CENTRAL
CALHOUN AND NORTH CENTRAL ORANGEBURG COUNTIES...
At 420 PM EDT, a severe thunderstorm capable of producing a tornado
was located just north of Cordova and will move northeast near
Orangeburg, moving northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Brookdale around 430 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Cordova, Edisto and Wilkinson Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3342 8091 3344 8096 3367 8090 3361 8074
TIME...MOT...LOC 2020Z 204DEG 33KT 3347 8091
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
CJR118
WWUS52 KCAE 232030
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
430 PM EDT MON OCT 23 2017
SCC017-075-232045-
/O.CON.KCAE.TO.W.0030.000000T0000Z-171023T2045Z/
Calhoun SC-Orangeburg SC-
430 PM EDT MON OCT 23 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR CENTRAL
CALHOUN AND NORTH CENTRAL ORANGEBURG COUNTIES...
At 430 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Brookdale, moving northeast at 35 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
central Calhoun and north central Orangeburg Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3350 8086 3352 8092 3366 8088 3361 8074
TIME...MOT...LOC 2030Z 207DEG 32KT 3355 8086
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
CJR457
WWUS52 KCAE 232044
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
444 PM EDT MON OCT 23 2017
SCC017-075-232053-
/O.EXP.KCAE.TO.W.0030.000000T0000Z-171023T2045Z/
Calhoun SC-Orangeburg SC-
444 PM EDT MON OCT 23 2017
...THE TORNADO WARNING FOR CENTRAL CALHOUN AND NORTH CENTRAL
ORANGEBURG COUNTIES WILL EXPIRE AT 445 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
A tornado watch remains in effect until 900 PM EDT for central South
Carolina.
LAT...LON 3350 8086 3352 8092 3366 8088 3361 8074
TIME...MOT...LOC 2043Z 199DEG 30KT 3365 8082
$$
CJRThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 12:39 PM EDT | Tornado Warning | CAE | Calhoun, Orangeburg | 36 min |
| Oct 23, 1:13 PM EDT | Tornado Warning | CAE | Calhoun, Clarendon, Sumter | 29 min |
| Oct 23, 3:35 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg, Orangeburg | 40 min |
| Oct 23, 5:05 PM EDT | Special Weather Statement | CAE | Lancaster | 55 min |
| Oct 23, 6:01 PM EDT | Special Weather Statement | CAE | Bamberg, Orangeburg | 44 min |
| Oct 23, 6:02 PM EDT | Special Weather Statement | CAE | Kershaw, Lancaster | 28 min |
| Oct 23, 6:18 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Orangeburg | 57 min |
| Oct 23, 6:52 PM EDT | Special Weather Statement | CAE | Chesterfield, Kershaw, Lee, Sumter | 53 min |
| Oct 23, 7:51 PM EDT | Special Weather Statement | CAE | Chesterfield | 39 min |
| Oct 23, 7:54 PM EDT | Special Weather Statement | CAE | Clarendon | 66 min |
Nearby
Tornado Warnings in South Carolina, 2017Every tornado warning in 2017Tornadoes in 2017
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.