Alert archive / North Carolina / Flash Flood Warnings in 2021

Flash Flood Warning 9, NWS Greenville-Spartanburg, SC

August 14, 2021Cabarrus County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 14, 2021, 2:03 AM EDT for Cabarrus County, North Carolina. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 14, 2021, 2:03 AM EDT (06:03 UTC)
Expired
Aug 14, 2021, 4:00 AM EDT
In force
117 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

County Cabarrus County, NC

The radar

The Greer radar (KGSP), 172 km from the middle of the area, began a volume at 06:06 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 00:00Z, 6.1 hours before the alert went out and 89 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 00:00Z on 2021-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2291 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2021-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
2291 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1604 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

311 
WGUS52 KGSP 140603
FFWGSP
NCC025-140800-
/O.NEW.KGSP.FF.W.0009.210814T0603Z-210814T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
203 AM EDT Sat Aug 14 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Flash Flood Warning for...
  Northeastern Cabarrus County in the piedmont of North Carolina...

* Until 400 AM EDT.

* At 203 AM EDT, Doppler radar and automated rain gauges indicated a 
  series of heavy rain producing showers and thunderstorms moving 
  repeatedly across Cabarrus County. These thunderstorms were 
  producing rainfall at rates up to one inch per hour and rainfall 
  amounts of 1 to 3 inches have fallen in the past 3 hours. 
  Additional heavy rainfall up to an inch will be possible through 3 
  am, and flash flooding is either ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Downtown Concord and Mt Pleasant.
  Flash flooding will be most likely along Adams Creek, Dutch 
  Buffalo Creek, and Little Buffalo Creek.

The Dutch Buffalo Creek may flood Bowman Barrier Road near Long Farm 
Road.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

When it is safe to do so, please report flooding or landslides 
threatening roads or property to the National Weather Service 
Greenville-Spartanburg by calling toll free, 1, 800, 2 6 7, 8 1 0 1, 
by posting on our Facebook page, or via Twitter using hashtag 
NWSGSP. Your message should describe the specific location where 
impacts occurred and the depth of flooding observed.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3539 8037 3536 8040 3534 8046 3535 8051
      3538 8054 3545 8054 3550 8049 3550 8030

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR

$$

HG
1 follow-up statement
354 
WGUS72 KGSP 140751
FFSGSP

Flash Flood Statement
National Weather Service Greenville-Spartanburg SC
351 AM EDT Sat Aug 14 2021

NCC025-140801-
/O.EXP.KGSP.FF.W.0009.000000T0000Z-210814T0800Z/
/00000.U.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cabarrus NC-
351 AM EDT Sat Aug 14 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 4 AM EDT EARLY THIS MORNING 
FOR NORTHEASTERN CABARRUS COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3539 8037 3536 8040 3534 8046 3535 8051
      3538 8054 3545 8054 3550 8049 3550 8030

$$

Krentz

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:37 PM EDTSpecial Weather StatementGSPCabarrus23 min
Aug 13, 9:10 PM EDTSpecial Weather StatementGSPCabarrus35 min
Aug 13, 11:13 PM EDTSpecial Weather StatementGSPRowan32 min
Aug 13, 11:15 PM EDTSevere Thunderstorm WarningGSPDavie, Rowan45 min
Aug 13, 11:45 PM EDTSpecial Weather StatementGSPCabarrus30 min
Aug 13, 11:49 PM EDTSpecial Weather StatementGSPRowan26 min
Aug 14, 12:10 AM EDTSpecial Weather StatementGSPRowan35 min
Aug 14, 12:17 AM EDTSpecial Weather StatementGSPCabarrus28 min
Aug 14, 12:31 AM EDTAreal Flood AdvisoryGSPRowan119 min
Aug 14, 12:33 AM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan42 min
Aug 14, 1:02 AM EDTSpecial Weather StatementGSPRowan28 min
Aug 14, 1:13 AM EDTSpecial Weather StatementGSPRowan32 min
Aug 14, 1:32 AM EDTAreal Flood AdvisoryGSPCabarrus, Rowan118 min
Aug 14, 1:37 AM EDTSpecial Weather StatementGSPRowan23 min
Aug 14, 2:17 PM EDTSpecial Weather StatementGSPLincoln28 min
Aug 14, 2:19 PM EDTSpecial Weather StatementGSPUnion26 min
Aug 14, 2:33 PM EDTSevere Thunderstorm WarningGSPMecklenburg, Union42 min
Aug 14, 2:43 PM EDTSevere Thunderstorm WarningGSPUnion47 min
Aug 14, 2:46 PM EDTSpecial Weather StatementGSPCatawba, Lincoln29 min
Aug 14, 2:53 PM EDTSevere Thunderstorm WarningGSPCatawba, Lincoln33 min
Aug 14, 3:04 PM EDTSevere Thunderstorm WarningGSPHenderson, Transylvania21 min
Aug 14, 3:13 PM EDTSevere Thunderstorm WarningGSPMecklenburg47 min
Aug 14, 3:30 PM EDTSpecial Weather StatementGSPMecklenburg30 min
Aug 14, 3:39 PM EDTSevere Thunderstorm WarningGSPMecklenburg, Union51 min
Aug 14, 4:00 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan45 min
Aug 14, 4:08 PM EDTSpecial Weather StatementGSPBurke37 min
Aug 14, 4:12 PM EDTAreal Flood AdvisoryGSPMecklenburg96 min
Aug 14, 4:22 PM EDTSevere Thunderstorm WarningGSPBuncombe, Henderson53 min
Aug 14, 4:25 PM EDTSevere Thunderstorm WarningGSPBurke, Caldwell50 min
Aug 14, 4:28 PM EDTSpecial Weather StatementGSPUnion32 min
Aug 14, 4:33 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan42 min
Aug 14, 4:34 PM EDTSevere Thunderstorm WarningGSPBurke, McDowell, Rutherford41 min
Aug 14, 4:35 PM EDTSevere Thunderstorm WarningGSPMcDowell, Rutherford40 min
Aug 14, 4:45 PM EDTSpecial Weather StatementGSPTransylvania30 min
Aug 14, 4:55 PM EDTSevere Thunderstorm WarningGSPBurke, McDowell, Rutherford50 min
Aug 14, 5:01 PM EDTSpecial Weather StatementGSPBuncombe29 min
Aug 14, 5:14 PM EDTSpecial Weather StatementGSPIredell31 min
Aug 14, 5:16 PM EDTSpecial Weather StatementGSPPolk29 min
Aug 14, 5:27 PM EDTAreal Flood AdvisoryGSPCaldwell2 hr
Aug 14, 5:42 PM EDTSpecial Weather StatementGSPJackson33 min
Aug 14, 5:44 PM EDTSpecial Weather StatementGSPPolk31 min
Aug 14, 5:53 PM EDTSpecial Weather StatementGSPHenderson37 min
Aug 14, 6:02 PM EDTAreal Flood AdvisoryGSPMcDowell118 min
Aug 14, 6:20 PM EDTSpecial Weather StatementGSPSwain25 min
Aug 14, 6:51 PM EDTAreal Flood AdvisoryGSPBuncombe, McDowell, Rutherford114 min
Aug 14, 7:38 PM EDTAreal Flood AdvisoryGSPBuncombe, Henderson112 min

Nearby

Flash Flood Warnings in North Carolina, 2021Every flash flood warning in 2021

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.