Alert archive / South Carolina / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 55, NWS Columbia, SC

May 6, 2022Bamberg County, Barnwell County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 6, 2022, 5:46 PM EDT for Bamberg County, Barnwell County, South Carolina. It was in force for 29 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: May 6, 2022, 5:46 PM EDT (21:46 UTC)
Expired: May 6, 2022, 6:15 PM EDT
In force: 29 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bamberg County, SC, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 56 km from the middle of the area, began a volume at 21:49 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
May 6, 6:03 PM EDT	TSTM WND DMG	4 Wsw Branchville, SC	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 4 WSW BRANCHVILLE. CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 4 WSW BRANCHVILLE. HIGHWAY PATROL REPORTED A TREE IN THE ROADWAY. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 17 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 6, 3:47 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.8 hours before the alert went out and 98 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 912 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1218 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

730 
WUUS52 KCAE 062146
SVRCAE
SCC009-011-062215-
/O.NEW.KCAE.SV.W.0055.220506T2146Z-220506T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
546 PM EDT Fri May 6 2022

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Southeastern Barnwell County in central South Carolina...
  Bamberg County in central South Carolina...

* Until 615 PM EDT.

* At 545 PM EDT, a severe thunderstorm was located over Rivers Bridge
  State Park, or 12 miles north of Hampton, moving northeast at 70
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to trees and powerlines.

* Locations impacted include...
  Bamberg, Denmark, Rivers Bridge State Park, Ehrhardt, Olar, Kline,
  Govan and Bamberg County Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection seek shelter inside a sturdy building and stay
away from windows.

&&

LAT...LON 3312 8119 3311 8132 3317 8140 3335 8105
      3331 8094 3325 8086 3321 8084 3320 8082
      3317 8081 3312 8089 3309 8088 3306 8090
      3310 8094 3303 8108
TIME...MOT...LOC 2145Z 241DEG 59KT 3305 8107 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MG

1 follow-up statement

123 
WWUS52 KCAE 062210
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
610 PM EDT Fri May 6 2022

SCC009-011-062219-
/O.EXP.KCAE.SV.W.0055.000000T0000Z-220506T2215Z/
Barnwell SC-Bamberg SC-
610 PM EDT Fri May 6 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BARNWELL AND
BAMBERG COUNTIES WILL EXPIRE AT 615 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. 

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central South Carolina.

LAT...LON 3312 8119 3311 8132 3317 8140 3335 8105
      3331 8094 3325 8086 3321 8084 3320 8082
      3317 8081 3312 8089 3309 8088 3306 8090
      3310 8094 3303 8108
TIME...MOT...LOC 2209Z 241DEG 59KT 3322 8070 

$$

MG

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 6, 3:56 PM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, May 6, 3:56 PM EDT, 1 hour 50 minutes before

Area Forecast Discussion
National Weather Service Columbia SC
356 PM EDT Fri May 6 2022

.SYNOPSIS...
Showers and thunderstorms will develop ahead of an approaching
cold front this afternoon. Some of these thunderstorms will be
strong to severe. Saturday will be cooler and drier with a
chance of showers and perhaps a rumble of thunder in the
northeastern Midlands. Several days of dry weather follow
starting on Sunday with gradually warming temperatures.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Quick update for Severe thunderstorm watch for the Midlands and
CSRA through 10pm. Organized convection lifting north-
northeastward through central GA should move into the CSRA after
4pm and continue northeastward across the Midlands providing a
damaging wind threat. Isolated tornadoes cannot be ruled out but
the primary threat is damaging winds and large hail.

Previous discussion:
Tornado watch issued for the Upstate SC and western NC. The
strongest SR helicity should remain northwest of the CAE CWA and
southwest in Georgia. Severe threat expected to increase for central
SC and east central Georgia later this afternoon into the evening...

Deepening surface low pressure over Kentucky/Indiana early this
afternoon with a trailing cold front moving east of the Mississippi
Valley. Ahead of the front, Precipitable water increase across SC to
around 1.5 inches with southwest low level flow...Warm air advection
appears weak however. Upper level low over Tennessee moving east-
northeast and taking on negative tilt. Upper level divergence will
be increasing over the Carolina as upper level 100 kt jet rounding
the base of the trough moves east. In addition a strong short wave
trough will approach the Carolinas. This will result in strong lift
across the region during time of peak heating...highs in the mid to
upper 80s as the cold front approaches.

Instability appears to be moderate with SB CAPE 1500-2000 J/kg.
Mixed layer CAPE is low at the moment and with gusty winds probably
mixing down lower dew points later in the day...possible limiting
factor. The CAMS suggest a possible storm mode of discrete cells
early, with low tornado threat given the lack of SR Helicity. Then
with a uni-directional strong shear profile late this afternoon, a
squall line ahead of the front 21z-24z with damaging winds the
primary threat along with hail given relatively low wet-bulb zero
height as the upper low approaches. Went with relatively high pops.
The front should push to the east of the area during the 03z- 06z
period tonight. Drier air will filter in behind the front and the
showers should move into the coastal plain. The stronger cold
advection may be delayed until morning so overnight temps only fall
to around 60.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/...
Upper low will swing over the forecast area Saturday with lower
heights and cooler temperatures with highs in the mid to upper 70s
with mostly cloudy skies. With considerable cooling aloft with the
upper low right over us, could get some showers and maybe even a
thunderstorm to develop, especially in the NE portion of the
forecast area. Saturday night the upper low will shift offshore with
drier air pumping into the forecast area. Overnight lows cooler as
well Saturday night with temperatures in the low to mid 50s.

NW flow aloft across the area Sunday with N flow at the surface with
drier air pumping into the forecast area as PWATs drop to .7 to .8
inches and skies begin to clear from SW to NE. Cold advection and
clouds will keep temperatures in the upper 60s NE to mid 70s SW.
Cold advection will continue overnight with lows in the upper 40s
north and low 50s south.

&&

.LONG TERM /MONDAY THROUGH FRIDAY/...
Good agreement among global models and their ensemble suites in
the low pressure remaining just east of the area with a
blocking ridge preventing it from pushing further downstream.
All euro ensemble members keep PWATs below an inch with
generally northerly flow continuing. Temperatures will slowly
recover into next week, remaining below normal. The low will
slowly shift back to the west by the middle of the week with
some increasing moisture which may lead to showers developing
late in the period, although moisture will still be fairly
limited.

&&

.AVIATION /20Z FRIDAY THROUGH WEDNESDAY/...
A cold front will approach from the lower Mississippi Valley by this
evening. Ahead of the front, the air mass is becoming moderately
unstable. The CAMS suggest a convective squall line with a few
discrete cells will develop in east central GA then move northeast
through the area during the 20z-24z. Kept the brief period of IFR
conditions as the thunderstorms moves through the area. Clearing
skies in the late evening with mainly mid level ceilings. Winds will
be southwest 15 to 20 knots with a few higher gusts ahead of the
front then shift to west after 12z Saturday. Strato-cumulus may
develop after 12z Saturday as the upper level low moves over the
area and maybe some brief light showers, but VFR conditions expected.

EXTENDED AVIATION OUTLOOK...There will be another chance for showers
on Saturday, especially across the northern CWA as the upper level
low passes by. Patchy early morning stratus/fog possible
particularly at OGB/AGS on Saturday.

EXTENDED AVIATION OUTLOOK...No significant impacts to aviation
expected.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.

&&

Hazardous weather outlook, May 6, 4:39 AM EDT, 13 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Columbia SC
439 AM EDT Fri May 6 2022

GAZ040-063>065-077-SCZ016-018-020>022-025>031-035-037-038-041-115-
116-135>137-070845-
Lincoln-McDuffie-Columbia-Richmond-Burke-Chesterfield-McCormick-
Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland-Lee-
Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northern Lancaster-
Southern Lancaster-Northwestern Orangeburg-Central Orangeburg-
Southeastern Orangeburg-
439 AM EDT Fri May 6 2022

This Hazardous Weather Outlook is for the Midlands of South Carolina
and the Central Savannah River area of Georgia.

.DAY ONE...Today and tonight.

A cold front will bring a line of strong to severe thunderstorms
through the area this afternoon. The main threat will be damaging
winds, isolated tornadoes, and large hail. Brief heavy rainfall will
also be possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed this afternoon and evening.

In the hours before

Local storm report, May 6, 5:33 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
533 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0507 PM     HAIL             2 SSE JOHNSTON          33.80N 81.80W
05/06/2022  U1.00 INCH       EDGEFIELD          SC   PUBLIC

            REPORT FROM MPING: QUARTER SIZED HAIL (1.00
            IN.).

&&

HC

Local storm report, May 6, 5:34 PM EDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
534 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     TSTM WND DMG     4 WSW EHRHARDT          33.07N 81.08W
05/06/2022                   BAMBERG            SC   LAW ENFORCEMENT

            HIGHWAY PATROL REPORTED A TREE ACROSS THE
            ROAD AT SC HWY. 64 AND WASHINGTON ROAD IN
            THE TOWN OF EHRHARDT.

&&

LCV

Local storm report, May 6, 5:37 PM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
537 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0532 PM     HAIL             RIDGEWAY                34.31N 80.96W
05/06/2022  E1.00 INCH       FAIRFIELD          SC   TRAINED SPOTTER

            REPORTED 1 INCH HAIL NEAR THE TOWN OF
            RIDGEWAY.

&&

LCV

Local storm report, May 6, 5:41 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
541 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 PM     TSTM WND DMG     2 ENE BELVEDERE         33.55N 81.91W
05/06/2022                   AIKEN              SC   PUBLIC

            PUBLIC THROUGH SOCIAL MEDIA REPORTED TREES
            BLOCKING THE ROADWAY ALONG BLANCHARD ROAD
            BETWEEN ASCAUGA LAKE ROAD AND OLD SUDLOW
            LAKE ROAD.

&&

LCV

Local storm report, May 6, 5:42 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
542 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0533 PM     TSTM WND GST     ORANGEBURG MUNICIPAL AP 33.46N 80.85W
05/06/2022  M50 MPH          ORANGEBURG         SC   ASOS

            THE ASOS AT THE ORANGEBURG MUNICIPAL AIRPORT
            REPORTED A WIND GUST OF 50 MPH.

&&

LCV

Local storm report, May 6, 5:45 PM EDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
545 PM EDT FRI MAY 6 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0542 PM     HAIL             SPRINGDALE              34.70N 80.78W
05/06/2022  E0.88 INCH       LANCASTER          SC   FIRE DEPT/RESCUE

            DIME TO NICKEL SIZED HAIL REPORTED IN
            LANCASTER COUNTY.

&&

GPL

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 6, 2:19 PM EDT	Special Weather Statement	CAE	Lancaster	26 min
May 6, 4:28 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	32 min
May 6, 4:40 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick	35 min
May 6, 4:57 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Bamberg, Barnwell, Orangeburg	33 min
May 6, 5:09 PM EDT	Special Weather Statement	CAE	Kershaw, Richland	36 min
May 6, 5:10 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CAE	Aiken, Edgefield, Lexington, McCormick, Saluda	35 min
May 6, 5:25 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CAE	Aiken, Bamberg, Barnwell, Calhoun, Clarendon, Lexington and 3 more	35 min
May 6, 5:26 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lee, Sumter	34 min
May 6, 5:30 PM EDT	Special Weather Statement	CAE	Lancaster	30 min
May 6, 5:32 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Lancaster, Richland	28 min
May 6, 5:37 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CAE	Fairfield, Lexington, Newberry, Richland, Saluda	23 min
May 6, 5:39 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Lancaster	36 min
May 6, 5:54 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee	36 min
May 6, 5:56 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Lee, Orangeburg, Richland, Sumter	34 min
May 6, 5:58 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	32 min
May 6, 5:59 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CAE	Fairfield, Kershaw, Lexington, Newberry, Richland	31 min
May 6, 6:06 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	24 min
May 6, 6:13 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Lancaster, Newberry	18 min
May 6, 6:29 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	31 min
May 6, 6:37 PM EDT	Special Weather Statement	CAE	Marlboro	23 min
May 6, 6:39 PM EDT	Special Weather Statement	CAE	Barnwell	36 min
May 6, 7:23 PM EDT	Special Weather Statement	CAE	Calhoun, Sumter	37 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2022 Every severe thunderstorm warning in 2022

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.