Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 181, NWS Greenville-Spartanburg, SC

July 18, 2015Oconee County, South Carolina; Franklin County, Hart County, Stephens County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 18, 2015, 4:48 PM EDT for Oconee County, South Carolina; Franklin County, Hart County, Stephens County, Georgia. It was in force for 42 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 18, 2015, 4:48 PM EDT (20:48 UTC)
Expired: Jul 18, 2015, 5:30 PM EDT
In force: 42 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Franklin County, GA, Hart County, GA, Stephens County, GA, Oconee County, SC

The radar

The Greer radar (KGSP), 94 km from the middle of the area, began a volume at 20:48 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.8 hours before the alert went out and 178 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: 705 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1130 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 45 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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 18, 4:38 PM EDT, 10 minutes earlier.

Area forecast discussion, Jul 18, 4:38 PM EDT, 10 minutes before

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Hazardous weather outlook, Jul 18, 6:59 AM EDT, 9 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
659 AM EDT SAT JUL 18 2015

GAZ010-017-NCZ033-035>037-048>053-056>059-062>065-069-501>507-509-
SCZ001>003-191100-
RABUN-HABERSHAM-AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-
MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
LINCOLN-CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-
GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
659 AM EDT SAT JUL 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED TODAY
ACROSS THE MOUNTAINS AND THE I-40 CORRIDOR IN THE PIEDMONT AND
FOOTHILLS...MAINLY THIS AFTERNOON. WHILE THE PRIMARY THREATS WILL
BE FROM CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL...AN
ISOLATED SEVERE STORM OR TWO WILL BE POSSIBLE...WITH LOCALLY
DAMAGING WINDS BEING THE PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ018-026-028-029-NCZ068-070>072-082-508-510-SCZ004>014-019-191100-
STEPHENS-FRANKLIN-HART-ELBERT-CLEVELAND-GASTON-MECKLENBURG-CABARRUS-
UNION-GREATER RUTHERFORD-EASTERN POLK-GREATER OCONEE-GREATER PICKENS-
GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-ANDERSON-ABBEVILLE-
LAURENS-CHESTER-GREENWOOD-
659 AM EDT SAT JUL 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON ACROSS THE PIEDMONT OF SOUTH CAROLINA...NORTHEAST
GEORGIA...AND SOUTHERN NORTH CAROLINA. WHILE THE PRIMARY THREATS
WILL BE FROM CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY
RAINFALL...AN ISOLATED SEVERE STORM OR TWO WILL BE POSSIBLE...WITH
LOCALLY DAMAGING WINDS BEING THE PRIMARY THREAT.

IN ADDITION...HIGH TEMPERATURES IN THE MID TO UPPER 90S WILL
COMBINE WITH MODERATE LEVELS OF HUMIDITY TO PRODUCE HEAT INDEX
VALUES OF 100 TO 105. TRY TO LIMIT OUTDOOR ACTIVITIES TO THE EARLY
MORNING OR EVENING HOURS. STAY OUT OF THE SUN AS MUCH AS
POSSIBLE...PREFERABLY IN AN AIR-CONDITIONED AREA DURING THE
HOTTEST PART OF THE DAY. IF YOU DO GO OUTSIDE...DRINK PLENTY OF
FLUIDS...AND WEAR LIGHT COLORED AND LOOSE FITTING CLOTHING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

LANE

In the hours before

Special weather statement, Jul 18, 4:09 PM EDT, 39 minutes before

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Special weather statement, Jul 18, 4:14 PM EDT, 34 minutes before

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Special weather statement, Jul 18, 4:19 PM EDT, 29 minutes before

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Special weather statement, Jul 18, 4:23 PM EDT, 25 minutes before

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Special weather statement, Jul 18, 4:26 PM EDT, 22 minutes before

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Special weather statement, Jul 18, 4:30 PM EDT, 18 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 12:48 PM EDT	Special Weather Statement	GSP	Polk	27 min
Jul 18, 12:57 PM EDT	Special Weather Statement	GSP	Mecklenburg	33 min
Jul 18, 1:19 PM EDT	Special Weather Statement	GSP	Burke	26 min
Jul 18, 1:21 PM EDT	Special Weather Statement	GSP	Yancey	24 min
Jul 18, 1:24 PM EDT	Severe Thunderstorm Warning	GSP	Gaston, Lincoln, Mecklenburg	51 min
Jul 18, 1:37 PM EDT	Special Weather Statement	GSP	Polk	23 min
Jul 18, 1:46 PM EDT	Special Weather Statement	GSP	Burke	29 min
Jul 18, 1:55 PM EDT	Special Weather Statement	GSP	McDowell	35 min
Jul 18, 2:13 PM EDT	Special Weather Statement	GSP	Henderson	32 min
Jul 18, 2:21 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Cleveland, Lincoln	39 min
Jul 18, 2:24 PM EDT	Special Weather Statement	GSP	Polk	36 min
Jul 18, 2:36 PM EDT	Special Weather Statement	GSP	Haywood	24 min
Jul 18, 2:40 PM EDT	Severe Thunderstorm Warning	GSP	McDowell, Polk, Rutherford	50 min
Jul 18, 2:48 PM EDT	Special Weather Statement	GSP	Henderson	27 min
Jul 18, 2:59 PM EDT	Special Weather Statement	GSP	Iredell	31 min
Jul 18, 3:10 PM EDT	Special Weather Statement	GSP	Transylvania	35 min
Jul 18, 3:22 PM EDT	Special Weather Statement	GSP	Gaston	23 min
Jul 18, 4:26 PM EDT	Special Weather Statement	GSP	Haywood	34 min
Jul 18, 12:54 PM EDT	Special Weather Statement	GSP	Pickens	36 min
Jul 18, 2:44 PM EDT	Special Weather Statement	GSP	York	31 min
Jul 18, 2:56 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	16 min
Jul 18, 3:03 PM EDT	Special Weather Statement	GSP	Spartanburg	27 min
Jul 18, 3:53 PM EDT	Special Weather Statement	GSP	Laurens	37 min
Jul 18, 4:09 PM EDT	Special Weather Statement	GSP	Chester	36 min
Jul 18, 4:14 PM EDT	Special Weather Statement	GSP	Pickens	31 min
Jul 18, 4:19 PM EDT	Special Weather Statement	GSP	Chester	26 min
Jul 18, 4:23 PM EDT	Special Weather Statement	GSP	Greenville	37 min
Jul 18, 4:36 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	39 min
Jul 18, 4:52 PM EDT	Special Weather Statement	GSP	Anderson	23 min
Jul 18, 5:08 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Oconee, Pickens	67 min
Jul 18, 5:15 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville	45 min
Jul 18, 5:19 PM EDT	Special Weather Statement	GSP	Laurens	26 min
Jul 18, 5:34 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenville, Greenwood, Laurens	56 min
Jul 18, 5:47 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson	73 min
Jul 18, 6:09 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood, Laurens	71 min
Jul 18, 2:52 PM EDT	Special Weather Statement	GSP	Rabun	23 min
Jul 18, 4:30 PM EDT	Special Weather Statement	GSP	Stephens	30 min
Jul 18, 6:37 PM EDT	Special Weather Statement	GSP	Elbert	23 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015 Severe Thunderstorm Warnings in South Carolina, 2015 Every severe thunderstorm warning in 2015

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.