Alert archive / South Carolina / Flood Watches in 2013

Flood Watch 3, NWS Wilmington, NC

July 11, 20138 counties in South Carolina; 6 counties in North Carolina

NWS Wilmington, NC issued this flood watch at Jul 11, 2013, 1:38 PM EDT for 8 counties in South Carolina; 6 counties in North Carolina. It took effect at Jul 11, 2013, 2:00 PM EDT. It was in force for 54 hr.

The area

The counties it named.

The facts

Issued: Jul 11, 2013, 1:38 PM EDT (17:38 UTC)
In effect from: Jul 11, 2013, 2:00 PM EDT
Expired: Jul 13, 2013, 8:00 PM EDT
In force: 54 hr
Issued by: NWS Wilmington, NC
Flood severity: None

Counties Bladen County, NC, Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Pender County, NC, Robeson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 59 km from the middle of the area, began a volume at 17:39 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, 5.6 hours before the alert went out and 169 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: 902 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 692 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -58 m²/s²
0-3 km storm-relative helicity: -28 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, NC wrote its last area forecast discussion before this flood watch went out at Jul 10, 7:37 PM EDT, 18 hours 1 minute earlier.

Area forecast discussion, Jul 10, 7:37 PM EDT, 18 hours 1 minute before

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Hazardous weather outlook, Jul 10, 4:07 PM EDT, 21 hours 31 minutes before

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The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 3:14 AM EDT	Small Craft Advisory	ILM		24 hr
Jul 11, 2:49 PM EDT	Special Weather Statement	ILM	Marlboro	26 min
Jul 11, 3:26 PM EDT	Special Weather Statement	ILM	Marlboro	34 min
Jul 11, 5:27 PM EDT	Special Weather Statement	ILM	Williamsburg	63 min
Jul 11, 7:23 PM EDT	Areal Flood Advisory	ILM	Florence, Marion	2 hr
Jul 11, 7:45 PM EDT	Special Weather Statement	ILM	Dillon	45 min
Jul 11, 10:55 AM EDT	River Flood Warning	ILM	Bladen	6 days
Jul 11, 6:49 PM EDT	Special Weather Statement	ILM	Robeson	26 min

Nearby

Flood Watches in South Carolina, 2013 Flood Watches in North Carolina, 2013 Every flood watch in 2013

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.