Alert archive / Georgia / Areal Flood Advisories in 2012

Areal Flood Advisory 13, NWS Charleston, SC

May 29, 2012Bulloch County, Jenkins County, Screven County, Georgia; Allendale County, South Carolina

NWS Charleston, SC issued this areal flood advisory at May 29, 2012, 9:08 PM EDT for Bulloch County, Jenkins County, Screven County, Georgia; Allendale County, South Carolina. It was in force for 112 min.

The area

The counties it named.

The facts

Issued: May 29, 2012, 9:08 PM EDT (01:08 UTC)
Expired: May 29, 2012, 11:00 PM EDT
In force: 112 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Bulloch County, GA, Jenkins County, GA, Screven County, GA, Allendale County, SC

The radar

The Charleston,SC radar (KCLX), 59 km from the middle of the area, began a volume at 01:09 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

Jacksonville, FL (KJAX), launched 00:00Z, 1.1 hours before the alert went out and 248 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: 1109 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

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 Charleston, SC wrote its last area forecast discussion before this areal flood advisory went out at May 29, 7:56 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, May 29, 7:56 PM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, May 29, 4:45 PM EDT, 4 hours 23 minutes before

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In the hours before

Local storm report, May 29, 6:08 PM EDT, 3 hours before

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Local storm report, May 29, 7:31 PM EDT, 1 hour 37 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 12:06 AM EDT	Special Marine Warning	CHS		114 min
May 30, 1:55 AM EDT	Special Marine Warning	CHS		2 hr
May 29, 9:00 PM EDT	Areal Flood Advisory	CHS	Berkeley, Dorchester	3 hr
May 29, 9:59 PM EDT	Areal Flood Advisory	CHS	Beaufort, Hampton, Jasper	2 hr
May 29, 10:36 PM EDT	Flash Flood Warning	CHS	Beaufort, Jasper	2 hr
May 29, 11:28 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston, Dorchester	3 hr
May 29, 11:51 PM EDT	Flash Flood Warning	CHS	Beaufort, Berkeley, Charleston, Colleton, Dorchester	3 hr
May 30, 12:05 AM EDT	Special Weather Statement	CHS	Berkeley, Charleston	85 min
May 30, 6:42 AM EDT	Lake Wind Advisory	CHS	Berkeley	4 hr

Nearby

Areal Flood Advisories in Georgia, 2012 Areal Flood Advisories in South Carolina, 2012 Every areal flood advisory in 2012

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.