Alert archive / North Carolina / Flash Flood Watches in 2008

Flash Flood Watch 3, NWS Greenville-Spartanburg, SC

August 27, 200816 counties in North Carolina; Chester County, York County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood watch at Aug 27, 2008, 11:12 AM EDT for 16 counties in North Carolina; Chester County, York County, South Carolina. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Aug 27, 2008, 11:12 AM EDT (15:12 UTC)
Expired: Aug 28, 2008, 12:00 AM EDT
In force: 13 hr
Issued by: NWS Greenville-Spartanburg, SC
Flood severity: None

Counties Alexander County, NC, Avery County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Rowan County, NC, Union County, NC, Yancey County, NC, Chester County, SC, York County, SC

The radar

The Greer radar (KGSP), 116 km from the middle of the area, began a volume at 15:15 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, 3.2 hours before the alert went out and 135 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: 229 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 237 m²/s²
0-3 km storm-relative helicity: 270 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 watch went out at Aug 27, 8:10 AM EDT, 3 hours 2 minutes earlier.

Area forecast discussion, Aug 27, 8:10 AM EDT, 3 hours 2 minutes before

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Hazardous weather outlook, Aug 27, 5:30 AM EDT, 5 hours 42 minutes before

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In the hours before

Local storm report, Aug 27, 5:27 AM EDT, 5 hours 45 minutes before

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Special weather statement, Aug 27, 8:35 AM EDT, 2 hours 37 minutes before

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Local storm report, Aug 27, 8:46 AM EDT, 2 hours 26 minutes before

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Local storm report, Aug 27, 8:47 AM EDT, 2 hours 25 minutes before

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Local storm report, Aug 27, 8:54 AM EDT, 2 hours 18 minutes before

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Local storm report, Aug 27, 9:47 AM EDT, 1 hour 25 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
Aug 26, 9:01 PM EDT	Flash Flood Warning	GSP	Mitchell, Yancey	3 hr
Aug 26, 9:58 PM EDT	Flash Flood Warning	GSP	Avery, Mitchell	6 hr
Aug 26, 11:10 PM EDT	Flash Flood Warning	GSP	Burke, Caldwell	5 hr
Aug 26, 11:57 PM EDT	Flash Flood Warning	GSP	McDowell, Mitchell, Yancey	3 hr
Aug 27, 12:20 AM EDT	Flash Flood Warning	GSP	Cabarrus, Gaston, Lincoln, Mecklenburg	4 hr
Aug 27, 12:48 AM EDT	Flash Flood Warning	GSP	Catawba	3 hr
Aug 27, 2:56 AM EDT	Areal Flood Advisory	GSP	Transylvania	3 hr
Aug 27, 3:52 AM EDT	Areal Flood Warning	GSP	Burke, Caldwell	3 hr
Aug 27, 4:13 AM EDT	Flash Flood Warning	GSP	Cabarrus, Mecklenburg	3 hr
Aug 27, 4:37 AM EDT	Flash Flood Warning	GSP	Rowan	3 hr
Aug 27, 7:21 AM EDT	Areal Flood Warning	GSP	Cabarrus, Mecklenburg	6 hr
Aug 27, 7:32 AM EDT	Areal Flood Warning	GSP	Rowan	4 hr
Aug 27, 3:12 PM EDT	Areal Flood Advisory	GSP	Cabarrus	4 hr
Aug 26, 11:22 PM EDT	Areal Flood Advisory	GSP	York	113 min
Aug 27, 1:10 AM EDT	Areal Flood Advisory	GSP	Cherokee, Chester, York	110 min
Aug 27, 3:28 AM EDT	Areal Flood Advisory	GSP	Greenville	2 hr
Aug 27, 5:49 AM EDT	Areal Flood Advisory	GSP	York	116 min
Aug 27, 1:01 PM EDT	Areal Flood Warning	GSP	Chester	4 hr

Nearby

Flash Flood Watches in North Carolina, 2008 Flash Flood Watches in South Carolina, 2008 Every flash flood watch in 2008

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.