Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Columbia, SC

July 24, 2017Aiken County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 24, 2017, 2:32 PM EDT for Aiken County, South Carolina. It was in force for 28 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: Jul 24, 2017, 2:32 PM EDT (18:32 UTC)
Expired: Jul 24, 2017, 3:00 PM EDT
In force: 28 min
Issued by: NWS Columbia, SC

County Aiken County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.5 hours before the alert went out and 187 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: 811 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 644 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 24, 11:09 AM EDT, 3 hours 23 minutes earlier.

Area forecast discussion, Jul 24, 11:09 AM EDT, 3 hours 23 minutes before

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</head>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Jul 24, 4:36 AM EDT, 9 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Columbia SC
436 AM EDT Mon Jul 24 2017

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-250845-
Lincoln-McDuffie-Columbia-Richmond-Burke-Lancaster-Chesterfield-
McCormick-Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-
Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon-
Bamberg-
436 AM EDT Mon Jul 24 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.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 24, 11:34 AM EDT, 2 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
1134 AM EDT MON JUL 24 2017

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

0741 PM     TSTM WND DMG     7 WSW SALLEY            33.55N 81.42W
07/23/2017                   AIKEN              SC   LAW ENFORCEMENT

            SC HIGHWAY PATROL REPORTED MULTIPLE TREES
            DOWN ON SMYRNA CHURCH ROAD NEAR THE
            INTERSECTION OF WARBONNET ROAD.

&&

CJR

Special weather statement, Jul 24, 2:32 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Columbia SC
232 PM EDT MON JUL 24 2017

SCZ030-241900-
Aiken-
232 PM EDT MON JUL 24 2017

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL AIKEN COUNTY...

At 231 PM EDT, a strong thunderstorm was located over Gloverville, or
near Clearwater, moving east at 20 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Aiken, North Augusta, Belvedere, Clearwater, Gloverville and
Burnettown.

LAT...LON 3359 8191 3362 8184 3364 8171 3349 8168
      3339 8181 3339 8187 3340 8195 3341 8191
      3342 8193 3344 8191 3346 8193 3348 8198
      3351 8199
TIME...MOT...LOC 1831Z 253DEG 50KT 3353 8183

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 8:03 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Lexington, Orangeburg	57 min
Jul 23, 8:34 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	3 hr
Jul 24, 2:00 PM EDT	Areal Flood Advisory	CAE	Aiken, Edgefield	2 hr
Jul 24, 3:32 PM EDT	Areal Flood Advisory	CAE	Calhoun, Lexington, Richland	118 min
Jul 24, 3:58 PM EDT	Special Weather Statement	CAE	Barnwell	17 min
Jul 24, 4:08 PM EDT	Special Weather Statement	CAE	Richland	37 min
Jul 24, 4:14 PM EDT	Flash Flood Warning	CAE	Richland	91 min
Jul 24, 4:52 PM EDT	Special Weather Statement	CAE	Clarendon	53 min
Jul 24, 5:49 PM EDT	Special Weather Statement	CAE	Clarendon, Sumter	41 min
Jul 23, 9:39 PM EDT	Severe Thunderstorm Warning	CAE	Columbia, Lincoln, McDuffie, Richmond	36 min
Jul 24, 3:35 PM EDT	Severe Thunderstorm Warning	CAE	Burke	40 min

Nearby

Special Weather Statements in South Carolina, 2017 Every special weather statement 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.