Alert archive / South Carolina / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 46, NWS Greenville-Spartanburg, SC

May 23, 2014Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 23, 2014, 4:01 PM EDT for Union County, South Carolina. It was in force for 44 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: May 23, 2014, 4:01 PM EDT (20:01 UTC)
Expired: May 23, 2014, 4:45 PM EDT
In force: 44 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

County Union County, SC

The radar

The Greer radar (KGSP), 59 km from the middle of the area, began a volume at 20:05 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
May 23, 2:56 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.0 hours before the alert went out and 220 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: 106 J/kg
Mixed-layer CIN: -255 J/kg
Mixed-layer LCL: 1427 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 36 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 May 23, 2:57 PM EDT, 1 hour 4 minutes earlier.

Area forecast discussion, May 23, 2:57 PM EDT, 1 hour 4 minutes before

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Hazardous weather outlook, May 23, 4:11 AM EDT, 11 hours 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
411 AM EDT FRI MAY 23 2014

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-240815-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
411 AM EDT FRI MAY 23 2014

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

.DAY ONE...TODAY AND TONIGHT.

A COLD FRONT MOVING SLOWLY SOUTHWARD THROUGH THE REGION TODAY WILL
GENERATE ISOLATED TO SCATTERED THUNDERSTORMS...MAINLY THIS
AFTERNOON AND EVENING. ALTHOUGH THE COVERAGE OF THE THUNDERSTORMS
IS NOT EXPECTED TO BE VERY WIDESPREAD...JUST ABOUT ANY
THUNDERSTORM THAT DEVELOPS LATE TODAY WILL HAVE THE POTENTIAL TO
PRODUCE BRIEF BUT DAMAGING WIND GUSTS AND HAIL THE SIZE OF
QUARTERS. IN ADDITION...BRIEF HEAVY DOWNPOURS AND FREQUENT CLOUD
TO GROUND LIGHTNING WILL ACCOMPANY ANY THUNDERSTORM. THE GREATEST
COVERAGE OF THUNDERSTORMS LATE TODAY WILL BE ALONG AND SOUTHEAST
OF INTERSTATE 85...ESPECIALLY ACROSS THE CHARLOTTE METRO AREA AND
THE EASTERN UPSTATE OF SOUTH CAROLINA.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..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.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE ASKED TO RELAY ANY REPORTS OF LARGE HAIL OR
DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE.

HG

In the hours before

Local storm report, May 23, 3:04 PM EDT, 57 minutes before

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Special weather statement, May 23, 3:29 PM EDT, 32 minutes before

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Local storm report, May 23, 3:43 PM EDT, 18 minutes before

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Special weather statement, May 23, 3:45 PM EDT, 16 minutes before

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Local storm report, May 23, 3:49 PM EDT, 12 minutes before

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Local storm report, May 23, 3:56 PM EDT, 5 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
May 22, 8:08 PM EDT	Special Weather Statement	GSP	Haywood	37 min
May 22, 8:18 PM EDT	Special Weather Statement	GSP	Buncombe, Madison	27 min
May 22, 8:44 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Swain	61 min
May 22, 8:51 PM EDT	Special Weather Statement	GSP	Haywood	24 min
May 22, 9:10 PM EDT	Special Weather Statement	GSP	Macon	35 min
May 23, 7:10 AM EDT	Special Weather Statement	GSP	Graham, Haywood, Madison, Mitchell, Swain, Yancey	80 min
May 23, 8:17 AM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood, Madison	43 min
May 23, 8:34 AM EDT	Special Weather Statement	GSP	Avery, Buncombe, Madison, Mitchell, Yancey	41 min
May 23, 9:21 AM EDT	Special Weather Statement	GSP	Burke, Rutherford	24 min
May 23, 9:53 AM EDT	Special Weather Statement	GSP	Catawba, Gaston, Lincoln, Mecklenburg	37 min
May 23, 10:29 AM EDT	Special Weather Statement	GSP	Cabarrus, Mecklenburg, Union	46 min
May 23, 6:19 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg, Union	56 min
May 23, 2:34 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	56 min
May 23, 3:29 PM EDT	Special Weather Statement	GSP	Spartanburg	31 min
May 23, 3:32 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	58 min
May 23, 3:45 PM EDT	Special Weather Statement	GSP	Pickens	45 min
May 23, 3:50 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	55 min
May 23, 4:28 PM EDT	Special Weather Statement	GSP	Spartanburg	32 min
May 23, 4:37 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Spartanburg	53 min
May 23, 4:44 PM EDT	Severe Thunderstorm Warning	GSP	Chester	61 min
May 23, 5:18 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Union, York	57 min
May 23, 5:23 PM EDT	Special Weather Statement	GSP	Spartanburg	22 min
May 23, 5:29 PM EDT	Special Weather Statement	GSP	Spartanburg	31 min
May 23, 5:45 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	30 min
May 23, 5:57 PM EDT	Severe Thunderstorm Warning	GSP	York	48 min
May 23, 6:16 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Chester, Spartanburg, Union, York	59 min
May 23, 6:47 PM EDT	Severe Thunderstorm Warning	GSP	Chester, York	28 min
May 23, 7:18 PM EDT	Special Weather Statement	GSP	Union	27 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2014 Every severe thunderstorm warning in 2014

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.