Alert archive / South Carolina / Flash Flood Warnings in 2010

Flash Flood Warning 28, NWS Greenville-Spartanburg, SC

June 30, 2010Anderson County, Oconee County, South Carolina; Stephens County, Georgia

NWS Greenville-Spartanburg, SC issued this flash flood warning at Jun 30, 2010, 1:08 AM EDT for Anderson County, Oconee County, South Carolina; Stephens County, Georgia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 30, 2010, 1:08 AM EDT (05:08 UTC)
Expired: Jun 30, 2010, 4:00 AM EDT
In force: 3 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

Counties Stephens County, GA, Anderson County, SC, Oconee County, SC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 05:09 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.1 hours before the alert went out and 195 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: 949 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1565 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 14 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 flash flood 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 flash flood warning went out at Jun 29, 2:32 PM EDT, 10 hours 36 minutes earlier.

Area forecast discussion, Jun 29, 2:32 PM EDT, 10 hours 36 minutes before

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Hazardous weather outlook, Jun 29, 3:24 PM EDT, 9 hours 44 minutes before

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In the hours before

Local storm report, Jun 29, 7:47 PM EDT, 5 hours 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 11:30 PM EDT	Special Weather Statement	GSP	Gaston	45 min
Jun 30, 12:51 AM EDT	Areal Flood Advisory	GSP	Cabarrus, Mecklenburg, Union	114 min
Jun 30, 1:01 AM EDT	Flash Flood Warning	GSP	Cabarrus, Mecklenburg	3 hr
Jun 30, 3:22 AM EDT	Special Weather Statement	GSP	Rowan	83 min
Jun 30, 12:28 PM EDT	Special Weather Statement	GSP	Mecklenburg	47 min
Jun 30, 1:17 PM EDT	Areal Flood Advisory	GSP	Cabarrus, Gaston, Mecklenburg	58 min
Jun 30, 2:16 PM EDT	Areal Flood Advisory	GSP	Cabarrus, Mecklenburg, Union	119 min
Jun 30, 2:36 PM EDT	Flash Flood Warning	GSP	Mecklenburg, Union	3 hr
Jun 30, 4:07 PM EDT	Flash Flood Warning	GSP	Union	3 hr
Jun 29, 10:46 PM EDT	Special Weather Statement	GSP	Oconee	29 min
Jun 29, 10:54 PM EDT	Special Weather Statement	GSP	Laurens	36 min
Jun 30, 12:48 AM EDT	Areal Flood Advisory	GSP	Anderson, Oconee	57 min
Jun 30, 1:08 AM EDT	Areal Flood Advisory	GSP	Laurens	112 min
Jun 30, 2:55 PM EDT	Special Weather Statement	GSP	York	50 min

Nearby

Flash Flood Warnings in South Carolina, 2010 Flash Flood Warnings in Georgia, 2010 Every flash flood warning in 2010

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.