Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 100, NWS Greenville-Spartanburg, SC

May 31, 2017Cabarrus County, Mecklenburg County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 31, 2017, 5:21 PM EDT for Cabarrus County, Mecklenburg County, North Carolina. It was in force for 39 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 31, 2017, 5:21 PM EDT (21:21 UTC)
Expired
May 31, 2017, 6:00 PM EDT
In force
39 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cabarrus County, NC, Mecklenburg County, NC

The radar

The Greer radar (KGSP), 147 km from the middle of the area, began a volume at 21:25 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, 9.4 hours before the alert went out and 111 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 2017-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 222 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 2017-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939587897Sfc1 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
222 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1216 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
11 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 May 31, 4:50 PM EDT, 31 minutes earlier.

Area forecast discussion, May 31, 4:50 PM EDT, 31 minutes before
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Hazardous weather outlook, May 31, 4:10 AM EDT, 13 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
410 AM EDT Wed May 31 2017

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-010815-
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-
410 AM EDT Wed May 31 2017

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...Today and Tonight.

Scattered showers and thunderstorms will continue into the evening.
Strong gusty winds, brief heavy rainfall, and frequent cloud to
ground lightning could occur with any of the storms.

.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.

In the hours before

Special weather statement, May 31, 3:45 PM EDT, 1 hour 36 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
345 PM EDT WED MAY 31 2017

SCZ002-003-005>007-312015-
Pickens Mountains SC-Greater Pickens SC-Greenville Mountains SC-
Spartanburg SC-Greater Greenville SC-
345 PM EDT WED MAY 31 2017

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN GREENVILLE...
NORTHWESTERN SPARTANBURG AND PICKENS COUNTIES UNTIL 415 PM EDT...

At 345 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 8 miles south of Columbus to 10 miles west of
Pickens, and moving southeast at 10 mph.

Locations to be impacted include...
Pickens, Easley, Greer, Taylors, Berea, Boiling Springs SC, Travelers
Rest, Lyman, Slater-Marietta and Inman.

Wind gusts up to 40 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

&&

LAT...LON 3477 8289 3479 8288 3482 8290 3490 8291
      3491 8290 3492 8291 3494 8290 3495 8291
      3496 8291 3497 8292 3498 8294 3518 8216
      3502 8186 3475 8288
TIME...MOT...LOC 1945Z 316DEG 7KT 3512 8219 3494 8288

TDP
Special weather statement, May 31, 4:12 PM EDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
412 PM EDT WED MAY 31 2017

NCZ069-070-312045-
Gaston NC-Lincoln NC-
412 PM EDT WED MAY 31 2017

...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN LINCOLN AND GASTON
COUNTIES UNTIL 445 PM EDT...

At 412 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 8 miles east of Lincolnton to 9 miles northeast
of Shelby, and moving southeast at 15 mph.

Locations to be impacted include...
Lincolnton, Gastonia, Mt Holly, Cherryville, Bessemer City, Dallas,
Stanley, Ranlo, High Shoals and Iron Station.

Wind gusts up to 40 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

&&

LAT...LON 3535 8096 3535 8097 3531 8099 3524 8131
      3525 8132 3526 8132 3528 8136 3533 8136
      3536 8141 3542 8146 3550 8107 3547 8095
      3545 8094 3543 8096 3539 8095 3537 8099
      3536 8097 3538 8096 3536 8092
TIME...MOT...LOC 2012Z 294DEG 14KT 3547 8110 3539 8143

TDP
Special weather statement, May 31, 4:18 PM EDT, 1 hour 3 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
418 PM EDT WED MAY 31 2017

SCZ003-005>007-312100-
Greater Pickens SC-Greenville Mountains SC-Spartanburg SC-
Greater Greenville SC-
418 PM EDT WED MAY 31 2017

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN GREENVILLE...
NORTHERN SPARTANBURG AND EAST CENTRAL PICKENS COUNTIES UNTIL 500 PM
EDT...

At 418 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 12 miles northwest of Spartanburg to 4 miles
north of Easley, and moving southeast at 10 mph.

Locations to be impacted include...
Greenville Downtown, Spartanburg, Easley, Pickens, Greenville
Eastside, West Greenville, Greer, Mauldin, Taylors and Berea.

Wind gusts up to 40 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

&&

LAT...LON 3478 8245 3482 8248 3476 8262 3489 8274
      3496 8257 3514 8206 3502 8178 3496 8177
      3472 8246
TIME...MOT...LOC 2018Z 308DEG 11KT 3507 8208 3489 8261

TDP
Special weather statement, May 31, 4:32 PM EDT, 49 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
432 PM EDT WED MAY 31 2017

NCZ037-057-312100-
Rowan NC-Davie NC-
432 PM EDT WED MAY 31 2017

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL DAVIE AND NORTH CENTRAL
ROWAN COUNTIES UNTIL 500 PM EDT...

At 432 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles southeast of Mocksville, or near Cooleemee, moving east at 20
mph.

Locations to be impacted include...
Mocksville, Cooleemee, High Rock Lake, Fork Church, Advance and
Woodleaf.

Wind gusts up to 40 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

&&

LAT...LON 3575 8061 3593 8060 3595 8038 3589 8037
      3588 8042 3587 8039 3585 8039 3585 8042
      3583 8043 3583 8046 3584 8047 3583 8049
      3581 8047 3579 8048 3577 8045 3574 8045
      3573 8040 3572 8034 3571 8032
TIME...MOT...LOC 2032Z 273DEG 17KT 3584 8052

TDP
Special weather statement, May 31, 5:15 PM EDT, 6 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
515 PM EDT WED MAY 31 2017

NCZ071-072-312145-
Cabarrus NC-Mecklenburg NC-
515 PM EDT WED MAY 31 2017

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN CABARRUS AND
MECKLENBURG COUNTIES UNTIL 545 PM EDT...

At 515 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles north of Uptown Charlotte, or near Northwest Charlotte, moving
southeast at 20 mph.

Locations to be impacted include...
Uptown Charlotte, Huntersville, Downtown Concord, Central Charlotte,
Northeast Charlotte, East Charlotte, Northwest Charlotte, West
Concord, Matthews and Mint Hill.

Wind gusts up to 45 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters. Do not drive across
flooded roads.

&&

LAT...LON 3516 8061 3507 8072 3523 8101 3535 8095
      3536 8092 3536 8094 3537 8094 3545 8090
      3537 8048
TIME...MOT...LOC 2115Z 297DEG 18KT 3529 8087

TDP
Local storm report, May 31, 5:18 PM EDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
518 PM EDT WED MAY 31 2017

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

0435 PM     TSTM WND DMG     2 NNW LOWESVILLE        35.45N 81.02W
05/31/2017                   LINCOLN            NC   COUNTY OFFICIAL

            COUNTY OFFICIAL REPORTS MULITIPLE TREES DOWN ON HWY 73.

&&

KRENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 3:35 PM EDTSpecial Weather StatementGSPCleveland25 min
May 31, 3:40 PM EDTSpecial Weather StatementGSPCatawba, Lincoln35 min
May 31, 4:12 PM EDTSpecial Weather StatementGSPGaston33 min
May 31, 4:29 PM EDTSevere Thunderstorm WarningGSPGaston, Lincoln, Mecklenburg46 min
May 31, 4:32 PM EDTSpecial Weather StatementGSPDavie28 min
May 31, 5:15 PM EDTSpecial Weather StatementGSPMecklenburg30 min
May 31, 5:42 PM EDTSevere Thunderstorm WarningGSPUnion51 min
May 31, 6:01 PM EDTSpecial Weather StatementGSPMecklenburg29 min
May 31, 6:45 PM EDTSpecial Weather StatementGSPUnion30 min
May 31, 7:35 PM EDTAreal Flood AdvisoryGSPMecklenburg, Union115 min
May 31, 3:19 PM EDTSpecial Weather StatementGSPGreenville, Pickens26 min
May 31, 3:45 PM EDTSpecial Weather StatementGSPGreenville, Pickens30 min
May 31, 4:18 PM EDTSpecial Weather StatementGSPGreenville, Pickens, Spartanburg42 min
May 31, 4:46 PM EDTSevere Thunderstorm WarningGSPGreenville, Laurens, Spartanburg44 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.