Alert archive / South Carolina / Areal Flood Advisories in 2018

Areal Flood Advisory 21, NWS Greenville-Spartanburg, SC

April 15, 20185 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this areal flood advisory at Apr 15, 2018, 6:57 PM EDT for 5 counties in South Carolina. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 15, 2018, 6:57 PM EDT (22:57 UTC)
Expired
Apr 15, 2018, 9:00 PM EDT
In force
2 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Cherokee County, SC, Greenwood County, SC, Laurens County, SC, Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 40 km from the middle of the area, began a volume at 22:58 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, 11.0 hours before the alert went out and 238 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 2018-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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 2018-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 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
28 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
98 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 areal flood advisory 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 areal flood advisory went out at Apr 15, 5:32 PM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Apr 15, 5:32 PM EDT, 1 hour 25 minutes before
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Hazardous weather outlook, Apr 15, 12:17 PM EDT, 6 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
1217 PM EDT Sun Apr 15 2018

NCZ035>037-056-057-068>072-082-501>510-SCZ003-006>009-161630-
Alexander-Iredell-Davie-Catawba-Rowan-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-
Greenville Mountains-Greater Greenville-Spartanburg-Cherokee-York-
1217 PM EDT Sun Apr 15 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...TORNADO WATCH 52 IN EFFECT UNTIL 7 PM EDT THIS EVENING...

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

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.
   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ010-NCZ064-065-SCZ001-002-161630-
Rabun-Transylvania-Henderson-Oconee Mountains-Pickens Mountains-
1217 PM EDT Sun Apr 15 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...

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

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ017-018-026-028-029-SCZ004-005-161630-
Habersham-Stephens-Franklin-Hart-Elbert-Greater Oconee-
Greater Pickens-
1217 PM EDT Sun Apr 15 2018

This Hazardous Weather Outlook is for northeast Georgia and upstate
South Carolina.

.DAY ONE...This Afternoon and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

SCZ010>014-019-161630-
Anderson-Abbeville-Laurens-Union-Chester-Greenwood-
1217 PM EDT Sun Apr 15 2018

...TORNADO WATCH 52 IN EFFECT UNTIL 7 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for upstate South Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ048-051>053-058-059-161630-
Madison-Swain-Haywood-Buncombe-Graham-Northern Jackson-
1217 PM EDT Sun Apr 15 2018

...FREEZE WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH MONDAY
MORNING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Freeze Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ049-050-161630-
Yancey-Mitchell-
1217 PM EDT Sun Apr 15 2018

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...This Afternoon and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ033-161630-
Avery-
1217 PM EDT Sun Apr 15 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ062-063-161630-
Macon-Southern Jackson-
1217 PM EDT Sun Apr 15 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...FREEZE WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH MONDAY
MORNING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.
   Freeze Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

..Monday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

In the hours before

Local storm report, Apr 15, 5:59 PM EDT, 58 minutes before
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Local storm report, Apr 15, 6:14 PM EDT, 43 minutes before
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Local storm report, Apr 15, 6:25 PM EDT, 32 minutes before
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Local storm report, Apr 15, 6:34 PM EDT, 23 minutes before
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Local storm report, Apr 15, 6:41 PM EDT, 16 minutes before
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Local storm report, Apr 15, 6:49 PM EDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 3:38 AM EDTFreeze WatchGSPBuncombe, Graham, Haywood, Jackson, Macon, Madison and 1 more11 hr
Apr 15, 3:43 AM EDTFlash Flood WatchGSPAlexander, Avery, Burke, Cabarrus, Caldwell, Catawba and 15 more16 hr
Apr 15, 10:30 AM EDTSpecial Weather StatementGSPHenderson60 min
Apr 15, 10:31 AM EDTSpecial Weather StatementGSPPolk, Rutherford44 min
Apr 15, 10:39 AM EDTSpecial Weather StatementGSPMcDowell36 min
Apr 15, 11:25 AM EDTSpecial Weather StatementGSPMcDowell, Rutherford35 min
Apr 15, 12:00 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, Caldwell, McDowell45 min
Apr 15, 12:20 PM EDTSpecial Weather StatementGSPBurke25 min
Apr 15, 12:29 PM EDTSevere Thunderstorm WarningGSPCleveland, Rutherford46 min
Apr 15, 12:44 PM EDTFlash Flood WarningGSPBurke, Caldwell, Cleveland, Polk, Rutherford4 hr
Apr 15, 12:47 PM EDTSevere Thunderstorm WarningGSPBurke, Catawba, Cleveland, Lincoln, Rutherford28 min
Apr 15, 1:13 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba, Cleveland, Lincoln32 min
Apr 15, 1:38 PM EDTSpecial Weather StatementGSPCleveland37 min
Apr 15, 1:48 PM EDTSpecial Weather StatementGSPCleveland, Lincoln27 min
Apr 15, 1:50 PM EDTSpecial Weather StatementGSPAlexander, Catawba25 min
Apr 15, 2:14 PM EDTSpecial Weather StatementGSPAlexander, Catawba, Cleveland, Gaston, Iredell, Lincoln31 min
Apr 15, 2:44 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg46 min
Apr 15, 2:47 PM EDTSpecial Weather StatementGSPAlexander28 min
Apr 15, 2:58 PM EDTFreeze WarningGSPGraham, Haywood, Jackson, Macon, Swain42 hr
Apr 15, 3:02 PM EDTTornado WarningGSPGaston, Mecklenburg28 min
Apr 15, 3:15 PM EDTSevere Thunderstorm WarningGSPMecklenburg, Union30 min
Apr 15, 3:25 PM EDTSevere Thunderstorm WarningGSPCabarrus, Catawba, Gaston, Iredell, Lincoln, Mecklenburg and 1 more37 min
Apr 15, 3:41 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Rowan, Union34 min
Apr 15, 3:55 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan35 min
Apr 15, 4:14 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan31 min
Apr 15, 5:34 PM EDTAreal Flood WarningGSPAvery, Burke, Caldwell, McDowell, Mitchell, Yancey6 hr
Apr 15, 7:52 PM EDTAreal Flood AdvisoryGSPCleveland, Polk, Rutherford113 min
Apr 15, 11:21 AM EDTSpecial Weather StatementGSPGreenwood, Laurens39 min
Apr 15, 11:45 AM EDTSpecial Weather StatementGSPCherokee, Spartanburg45 min
Apr 15, 11:50 AM EDTSevere Thunderstorm WarningGSPGreenville, Laurens, Spartanburg25 min
Apr 15, 12:13 PM EDTSevere Thunderstorm WarningGSPGreenwood, Laurens47 min
Apr 15, 12:19 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg41 min
Apr 15, 12:31 PM EDTFlash Flood WarningGSPCherokee, Greenwood, Laurens, Spartanburg3 hr
Apr 15, 12:38 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg, Union52 min
Apr 15, 1:17 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg, Union43 min
Apr 15, 2:09 PM EDTSpecial Weather StatementGSPCherokee, Union36 min
Apr 15, 2:29 PM EDTSevere Thunderstorm WarningGSPCherokee, Chester, Union, York46 min

Nearby

Areal Flood Advisories in South Carolina, 2018Every areal flood advisory in 2018

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.