Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 10, NWS Greenville-Spartanburg, SC

April 20, 2015Cabarrus County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 20, 2015, 10:35 AM EDT for Cabarrus County, North Carolina. It was in force for 13 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: Apr 20, 2015, 10:35 AM EDT (14:35 UTC)
Expired: Apr 20, 2015, 10:48 AM EDT
In force: 13 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

County Cabarrus County, NC

The radar

The Greer radar (KGSP), 162 km from the middle of the area, began a volume at 14:38 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, 2.6 hours before the alert went out and 97 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: 17 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 654 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Apr 20, 10:23 AM EDT, 12 minutes earlier.

Area forecast discussion, Apr 20, 10:23 AM EDT, 12 minutes before

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Hazardous weather outlook, Apr 20, 4:55 AM EDT, 5 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
455 AM EDT MON APR 20 2015

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-210900-
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-
455 AM EDT MON APR 20 2015

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 WILL CROSS THE AREA TODAY BRINGING ANOTHER ROUND OF
SCATTERED THUNDERSTORMS. SOME OF THESE STORMS MAY BECOME SEVERE
WITH DAMAGING WINDS AND LARGE HAIL. IN ADDITION...ISOLATED
TORNADOES WILL BE POSSIBLE...MAINLY ACROSS THE PIEDMONT OF THE
CAROLINAS AND NORTHEAST GEORGIA.

WATER LEVELS WILL REMAIN HIGH IN AREA RIVERS AND STREAMS.
ALTHOUGH THE STORMS WILL BE FAST MOVING...HEAVY RAINFALL IS
POSSIBLE AND ISOLATED FLOODING MAY AGAIN DEVELOP.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

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

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Local storm report, Apr 20, 8:37 AM EDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
837 AM EDT MON APR 20 2015

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

0800 AM     TSTM WND DMG     SENECA                  34.69N 82.96W
04/20/2015                   OCONEE             SC   EMERGENCY MNGR

            TREES AND POWER LINES REPORTED DOWN IN THE 2011 FOREST
            DRIVE AREA.

&&

LGABRIC

Special weather statement, Apr 20, 9:05 AM EDT, 1 hour 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
905 AM EDT MON APR 20 2015

NCZ068>070-508-510-SCZ006>009-012>014-201400-
EASTERN POLK NC-CLEVELAND NC-GREATER RUTHERFORD NC-GASTON NC-
LINCOLN NC-LAURENS SC-CHESTER SC-YORK SC-GREATER GREENVILLE SC-
SPARTANBURG SC-CHEROKEE SC-UNION SC-
905 AM EDT MON APR 20 2015

...A CLUSTER OF THUNDERSTORMS WILL IMPACT PORTIONS OF SOUTHEASTERN
EASTERN POLK...CLEVELAND...GREATER RUTHERFORD...GASTON...LINCOLN...
NORTH CENTRAL LAURENS...WESTERN CHESTER...YORK...NORTHEASTERN GREATER
GREENVILLE...SPARTANBURG...CHEROKEE AND UNION UNTIL 1000 AM EDT...

AT 902 AM EDT...DOPPLER RADAR WAS TRACKING A CLUSTER OF
THUNDERSTORMS FROM RUTHERFORD COUNTY NORTH CAROLINA SOUTHWEST INTO
GREENVILLE COUNTY MOVING NORTHEAST AT 45 MPH.

BRIEF DOWNPOURS AND WIND GUSTS UP TO 45 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
GASTONIA...SPARTANBURG...SHELBY...MAULDIN...TAYLORS...GAFFNEY...
LINCOLNTON...UNION...YORK AND FOREST CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS WILL
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM DURING THREATENING WEATHER.

&&

LAT...LON 3473 8244 3554 8189 3554 8185 3557 8183
      3558 8180 3560 8179 3560 8177 3559 8171
      3558 8170 3558 8169 3556 8166 3557 8160
      3556 8157 3557 8155 3548 8097 3459 8124
TIME...MOT...LOC 1302Z 240DEG 49KT 3516 8178

LG

Special weather statement, Apr 20, 9:48 AM EDT, 47 minutes before

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Special weather statement, Apr 20, 10:14 AM EDT, 21 minutes before

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Local storm report, Apr 20, 10:23 AM EDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1023 AM EDT MON APR 20 2015

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

0943 AM     TSTM WND DMG     GASTONIA                35.25N 81.17W
04/20/2015                   GASTON             NC   BROADCAST MEDIA

            A REPORT OF A TREE BLOWN DOWN ON A MOBILE HOME AT 235
            HANKS CIRCLE.

&&

LGABRIC

Local storm report, Apr 20, 10:27 AM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1027 AM EDT MON APR 20 2015

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

0750 AM     TSTM WND DMG     WESTMINSTER             34.67N 83.09W
04/20/2015                   OCONEE             SC   EMERGENCY MNGR

            TREES DOWN AROUND THE WESTMINSTER AREA. TREE FELL ON A
            HOME.

&&

STUREY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 8:33 PM EDT	River Flood Warning	GSP	Henderson, Transylvania	61 hr
Apr 19, 8:57 PM EDT	Areal Flood Warning	GSP	Burke, Caldwell	6 hr
Apr 19, 9:28 PM EDT	Special Weather Statement	GSP	Swain	32 min
Apr 19, 9:39 PM EDT	River Flood Advisory	GSP	Haywood	12 hr
Apr 19, 10:04 PM EDT	Special Weather Statement	GSP	Madison	26 min
Apr 19, 10:15 PM EDT	Areal Flood Warning	GSP	Cabarrus, Gaston, Mecklenburg, Union	6 hr
Apr 20, 12:04 AM EDT	River Flood Warning	GSP	Gaston	35 hr
Apr 20, 3:04 AM EDT	Areal Flood Warning	GSP	Burke, Caldwell	6 hr
Apr 20, 4:11 AM EDT	Areal Flood Warning	GSP	Cabarrus, Mecklenburg, Union	6 hr
Apr 20, 9:05 AM EDT	Special Weather Statement	GSP	Cleveland, Gaston, Lincoln, Rutherford	55 min
Apr 20, 9:30 AM EDT	Severe Thunderstorm Warning	GSP	Gaston, Mecklenburg	45 min
Apr 20, 9:48 AM EDT	Special Weather Statement	GSP	Mecklenburg	27 min
Apr 20, 10:06 AM EDT	Areal Flood Warning	GSP	Cabarrus, Mecklenburg, Union	3 hr
Apr 20, 10:14 AM EDT	Special Weather Statement	GSP	Cabarrus, Mecklenburg, Rowan	46 min
Apr 20, 1:57 PM EDT	Special Weather Statement	GSP	Polk	33 min
Apr 20, 2:03 PM EDT	Severe Thunderstorm Warning	GSP	Polk	42 min
Apr 20, 2:40 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland	35 min
Apr 20, 3:12 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston, Lincoln, Mecklenburg	48 min
Apr 20, 3:21 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Rutherford	39 min
Apr 20, 3:58 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Gaston, Mecklenburg, Rowan	47 min
Apr 20, 4:03 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Rutherford	33 min
Apr 20, 4:22 PM EDT	Flash Flood Warning	GSP	Mecklenburg	3 hr
Apr 20, 4:31 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston	44 min
Apr 20, 4:41 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	49 min
Apr 20, 5:20 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg	40 min
Apr 20, 6:39 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus	36 min
Apr 20, 4:02 AM EDT	Areal Flood Warning	GSP	York	6 hr
Apr 20, 7:09 AM EDT	Special Weather Statement	GSP	Oconee	51 min
Apr 20, 8:18 AM EDT	Special Weather Statement	GSP	Anderson, Greenville, Pickens, Spartanburg	42 min
Apr 20, 9:53 AM EDT	Areal Flood Warning	GSP	York	6 hr
Apr 20, 1:10 PM EDT	Severe Thunderstorm Warning	GSP	Oconee, Pickens	50 min
Apr 20, 1:21 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	39 min
Apr 20, 1:42 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	48 min
Apr 20, 2:05 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	40 min
Apr 20, 2:46 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	29 min
Apr 20, 2:48 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Oconee, Pickens	42 min
Apr 20, 3:02 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	28 min
Apr 20, 3:21 PM EDT	Flash Flood Warning	GSP	Greenville, Oconee, Pickens	39 min
Apr 20, 3:26 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Oconee, Pickens	49 min
Apr 20, 3:43 PM EDT	Flash Flood Warning	GSP	Cherokee, Greenville, Spartanburg	62 min
Apr 20, 3:54 PM EDT	Tornado Warning	GSP	Anderson, Greenville	36 min
Apr 20, 4:02 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson	43 min
Apr 20, 4:28 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Laurens, Spartanburg	47 min
Apr 20, 5:01 PM EDT	Severe Thunderstorm Warning	GSP	Chester, Union	44 min
Apr 20, 5:39 PM EDT	Severe Thunderstorm Warning	GSP	Chester, Union, York	51 min
Apr 20, 5:57 PM EDT	Special Weather Statement	GSP	Abbeville	33 min
Apr 20, 6:02 PM EDT	Tornado Warning	GSP	Chester, York	28 min
Apr 20, 6:23 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood, Laurens	52 min
Apr 20, 12:56 PM EDT	Special Weather Statement	GSP	Rabun	34 min

Nearby

Severe Thunderstorm Warnings in North 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.