Alert archive / South Carolina / Flash Flood Warnings in 2017

Flash Flood Warning 9, NWS Columbia, SC

May 22, 2017Saluda County, South Carolina

NWS Columbia, SC issued this flash flood warning at May 22, 2017, 3:03 PM EDT for Saluda County, South 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
May 22, 2017, 3:03 PM EDT (19:03 UTC)
Expired
May 22, 2017, 5:00 PM EDT
In force
117 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Flood severity
None

County Saluda County, SC

The radar

The Columbia radar (KCAE), 56 km from the middle of the area, began a volume at 19:05 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.1 hours before the alert went out and 202 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, Charleston AFB, SC at 12:00Z on 2017-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 292 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, Charleston AFB, SC at 12:00Z on 2017-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
292 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
850 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

213 
WGUS52 KCAE 221903
FFWCAE
SCC081-222100-
/O.NEW.KCAE.FF.W.0009.170522T1903Z-170522T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Columbia SC
303 PM EDT MON MAY 22 2017

The National Weather Service in Columbia has issued a

* Flash Flood Warning for...
  Central Saluda County in central South Carolina...

* Until 500 PM EDT

* At 303 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Some locations that will experience flooding include...
  Saluda.

LAT...LON 3415 8185 3412 8160 3391 8155 3390 8156
      3394 8187

$$
RJO
2 follow-up statements
600 
WGUS72 KCAE 221940
FFSCAE

Flash Flood Statement
National Weather Service Columbia SC
340 PM EDT MON MAY 22 2017

SCC081-222100-
/O.CON.KCAE.FF.W.0009.000000T0000Z-170522T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Saluda SC-
340 PM EDT MON MAY 22 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
CENTRAL SALUDA COUNTY...

At 340 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area.  Flash flooding is expected to begin
shortly.

Some locations that will experience flooding include...
Saluda.

LAT...LON 3415 8185 3412 8160 3391 8155 3390 8156
      3394 8187

$$

RJO
422 
WGUS72 KCAE 222050
FFSCAE

Flash Flood Statement
National Weather Service Columbia SC
450 PM EDT MON MAY 22 2017

SCC081-222100-
/O.EXP.KCAE.FF.W.0009.000000T0000Z-170522T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Saluda SC-
450 PM EDT MON MAY 22 2017

...THE FLASH FLOOD WARNING FOR CENTRAL SALUDA COUNTY WILL EXPIRE AT
500 PM EDT...

Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.

LAT...LON 3415 8185 3412 8160 3391 8155 3390 8156
      3394 8187

$$

RJO

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 11:16 AM EDTFlash Flood WatchCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more58 hr
May 22, 1:47 PM EDTAreal Flood AdvisoryCAEFairfield, Kershaw, Lexington, Newberry, Richland, Saluda3 hr
May 22, 1:48 PM EDTFlash Flood WarningCAEMcCormick3 hr
May 22, 1:59 PM EDTFlash Flood WarningCAEAiken, Kershaw, Lexington, Richland, Saluda5 hr
May 22, 2:26 PM EDTSpecial Weather StatementCAEFairfield64 min
May 22, 2:34 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry26 min
May 22, 3:22 PM EDTSevere Thunderstorm WarningCAEKershaw, Sumter38 min
May 22, 4:05 PM EDTSpecial Weather StatementCAEAiken40 min
May 22, 4:29 PM EDTSpecial Weather StatementCAELexington31 min
May 22, 4:43 PM EDTSpecial Weather StatementCAELexington, Richland47 min
May 22, 5:22 PM EDTAreal Flood AdvisoryCAELancaster113 min

Nearby

Flash Flood Warnings in South Carolina, 2017Every flash flood 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.