Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 234, NWS Greenville-Spartanburg, SC

August 19, 2015Alexander County, Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 19, 2015, 2:11 PM EDT for Alexander County, Iredell County, North 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
Aug 19, 2015, 2:11 PM EDT (18:11 UTC)
Expired
Aug 19, 2015, 3:00 PM EDT
In force
49 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Alexander County, NC, Iredell County, NC

The radar

The Roanoke radar (KFCX), 145 km from the middle of the area, began a volume at 18:11 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 hours before the alert went out and 104 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2015-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 206 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2015-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
206 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
78 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 Aug 19, 2:08 PM EDT, 3 minutes earlier.

Area forecast discussion, Aug 19, 2:08 PM EDT, 3 minutes before
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Hazardous weather outlook, Aug 19, 6:33 AM EDT, 7 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
633 AM EDT WED AUG 19 2015

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-201045-
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-
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-CHESTER-GREENWOOD-
633 AM EDT WED AUG 19 2015

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

.DAY ONE...TODAY AND TONIGHT.

WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS ARE LIKELY TO
CONTINUE AGAIN TODAY AND TONIGHT. HEAVY PRECIPITATION OVER
ALREADY SOAKED AREAS COULD LEAD TO ADDITIONAL FLASH FLOODING
DURING THIS TIMEFRAME. ALSO...A FEW ISOLATED STRONG THUNDERSTORMS
CANNOT BE RULED OUT WITH GUSTY WINDS AND CLOUD TO GROUND LIGHTNING
BEING THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..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.

.SPOTTER INFORMATION STATEMENT...

NONE.

JPT

In the hours before

Special weather statement, Aug 19, 1:47 PM EDT, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
147 PM EDT WED AUG 19 2015

NCZ035-036-191815-
IREDELL NC-ALEXANDER NC-
147 PM EDT WED AUG 19 2015

...STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTH CENTRAL IREDELL
AND NORTHEASTERN ALEXANDER COUNTIES UNTIL 215 PM EDT...

AT 147 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6
MILES NORTH OF TAYLORSVILLE...OR 6 MILES SOUTH OF MORAVIAN FALLS...
MOVING NORTHEAST AT 15 MPH.

HALF INCH HAIL...WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL
RATES UP TO 2 INCHES PER HOUR WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
TAYLORSVILLE...LOVE VALLEY...UNION GROVE AND VASHTI.

LAT...LON 3605 8076 3589 8117 3589 8118 3602 8127
      3604 8120 3603 8118 3603 8117 3604 8113
      3603 8107 3606 8098
TIME...MOT...LOC 1747Z 240DEG 49KT 3601 8115

LG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 8:18 PM EDTAreal Flood AdvisoryGSPCabarrus, Mecklenburg, Union117 min
Aug 18, 8:41 PM EDTFlash Flood WarningGSPUnion3 hr
Aug 18, 8:55 PM EDTAreal Flood AdvisoryGSPDavie, Iredell, Rowan2 hr
Aug 18, 9:17 PM EDTFlash Flood WarningGSPUnion2 hr
Aug 18, 11:38 PM EDTAreal Flood WarningGSPUnion3 hr
Aug 19, 1:47 PM EDTSpecial Weather StatementGSPAlexander28 min
Aug 19, 2:13 PM EDTSpecial Weather StatementGSPRutherford47 min
Aug 19, 2:59 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan61 min
Aug 19, 4:14 PM EDTSpecial Weather StatementGSPIredell31 min
Aug 19, 4:24 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan66 min
Aug 19, 4:51 PM EDTFlash Flood WarningGSPCabarrus, Rowan4 hr
Aug 19, 5:39 PM EDTSevere Thunderstorm WarningGSPDavie48 min
Aug 19, 5:54 PM EDTAreal Flood AdvisoryGSPMecklenburg, Union2 hr
Aug 19, 6:08 PM EDTFlash Flood WarningGSPMecklenburg, Union3 hr
Aug 19, 6:49 PM EDTFlash Flood WarningGSPMecklenburg3 hr
Aug 19, 2:33 PM EDTSpecial Weather StatementGSPPickens42 min
Aug 19, 3:37 PM EDTSpecial Weather StatementGSPGreenville23 min
Aug 18, 8:03 PM EDTSpecial Weather StatementGSPStephens27 min
Aug 18, 8:14 PM EDTAreal Flood AdvisoryGSPHabersham, Stephens2 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2015Every 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.