Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 131, NWS Columbia, SC

July 7, 2017Aiken County, Lexington County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 7, 2017, 8:41 PM EDT for Aiken County, Lexington County, South Carolina. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 7, 2017, 8:41 PM EDT (00:41 UTC)
Expired: Jul 7, 2017, 9:30 PM EDT
In force: 49 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Aiken County, SC, Lexington County, SC

The radar

The Columbia radar (KCAE), 40 km from the middle of the area, began a volume at 00:41 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 00:00Z, 0.7 hours before the alert went out and 163 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: 2344 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 7, 7:49 PM EDT, 52 minutes earlier.

Area forecast discussion, Jul 7, 7:49 PM EDT, 52 minutes before

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Hazardous weather outlook, Jul 7, 6:47 AM EDT, 13 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Columbia SC
647 AM EDT Fri Jul 7 2017

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-081100-
Lincoln-McDuffie-Columbia-Richmond-Burke-Lancaster-Chesterfield-
McCormick-Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-
Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon-
Bamberg-
647 AM EDT Fri Jul 7 2017

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

.DAY ONE...Today and Tonight.

An isolated thunderstorm could reach severe limits this afternoon
and evening, more likely northern areas. Damaging wind gusts will be
the primary hazard with any severe thunderstorm.

Afternoon heat index values near 105.

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

Scattered mainly afternoon and evening thunderstorms are expected
Saturday and an isolated thunderstorm could reach severe limits.
Damaging wind gusts will be the primary hazard with any severe
thunderstorm.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 7, 6:54 PM EDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
654 PM EDT FRI JUL 7 2017

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

0633 PM     HAIL             6 SSW PINEWOOD          33.66N 80.51W
07/07/2017  E1.75 INCH       SUMTER             SC   PUBLIC

            REPORTED STRONG WINDS AROUND 35 TO 40 MPH
            ALONG WITH HAIL THAT WAS UP TO GOLF BALL
            SIZE NEAR PACKS LANDING ON LAKE MARION.

&&

LCV

Local storm report, Jul 7, 7:09 PM EDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
709 PM EDT FRI JUL 7 2017

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

0700 PM     HAIL             3 ENE WINDSOR           33.50N 81.46W
07/07/2017  E1.00 INCH       AIKEN              SC   PUBLIC

            PUBLIC REPORTED DIME TO QUARTER SIZE HAIL
            AND VERY STRONG WINDS THAT DOWNED SOME LIMBS
            IN THE YARD. THIS OCCURRED NEAR THE
            INTERSECTION OF CRESTWOOD ROAD AND WINDSOR
            ROAD.

&&

LCV

Local storm report, Jul 7, 7:17 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
717 PM EDT FRI JUL 7 2017

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

0638 PM     HAIL             2 SSE AIKEN             33.51N 81.71W
07/07/2017  E0.75 INCH       AIKEN              SC   PUBLIC

            PUBLIC REPORTED DIME TO PENNY SIZE HAIL AT
            THE AIKEN MALL.

&&

LCV

Local storm report, Jul 7, 7:30 PM EDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
730 PM EDT FRI JUL 7 2017

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

0700 PM     TSTM WND DMG     3 ENE WINDSOR           33.50N 81.46W
07/07/2017                   AIKEN              SC   PUBLIC

            PUBLIC REPORTED A TREE DOWN ALONG WITH
            SEVERAL LARGE BRANCHES NEAR THE INTERSECTION
            OF CENTERWOOD ROAD AND WINDSOR ROAD.

&&

LCV

Local storm report, Jul 7, 7:31 PM EDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE COLUMBIA SC
731 PM EDT FRI JUL 7 2017

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

0700 PM     HAIL             3 ENE WINDSOR           33.50N 81.46W
07/07/2017  E0.25 INCH       AIKEN              SC   PUBLIC

            PUBLIC REPORTED DIME TO QUARTER SIZE HAIL
            AND VERY STRONG WINDS THAT DOWNED SOME LIMBS
            IN THE YARD. THIS OCCURRED NEAR THE
            INTERSECTION OF CENTERWOOD ROAD AND WINDSOR
            ROAD.

&&

LCV

Local storm report, Jul 7, 7:59 PM EDT, 42 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:29 PM EDT	Special Weather Statement	CAE	Lexington	31 min
Jul 7, 9:25 PM EDT	Special Weather Statement	CAE	Lexington	35 min
Jul 7, 9:27 PM EDT	Special Weather Statement	CAE	Calhoun	33 min
Jul 7, 9:31 PM EDT	Special Weather Statement	CAE	Kershaw	29 min
Jul 8, 7:27 PM EDT	Severe Thunderstorm Warning	CAE	Lee, Richland, Sumter	63 min
Jul 8, 7:49 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Bamberg, Barnwell, Calhoun, Orangeburg	56 min
Jul 8, 7:56 PM EDT	Special Weather Statement	CAE	McCormick	34 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2017 Every severe thunderstorm warning 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.