Alert archive / North Carolina / Coastal Flood Advisories in 2012

Coastal Flood Advisory 21, NWS Wilmington, NC

July 31, 2012New Hanover County, North Carolina

NWS Wilmington, NC issued this coastal flood advisory at Jul 31, 2012, 6:01 PM EDT for New Hanover County, North Carolina. It took effect at Jul 31, 2012, 8:00 PM EDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 31, 2012, 6:01 PM EDT (22:01 UTC)
In effect from: Jul 31, 2012, 8:00 PM EDT
Expired: Jul 31, 2012, 11:00 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, NC

County New Hanover County, NC

The radar

The Wilmington radar (KLTX), 56 km from the middle of the area, began a volume at 22:03 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, 10.0 hours before the alert went out and 244 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: 873 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 605 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 46 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 coastal flood advisory 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 coastal flood advisory went out at Jul 31, 2:51 PM EDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jul 31, 2:51 PM EDT, 3 hours 10 minutes before

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Hazardous weather outlook, Jul 31, 5:06 PM EDT, 55 minutes before

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In the hours before

Special weather statement, Jul 31, 4:43 PM EDT, 1 hour 18 minutes before

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Special weather statement, Jul 31, 5:04 PM EDT, 57 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 31, 8:47 AM EDT	Special Marine Warning	ILM		28 min
Jul 31, 2:58 PM EDT	Small Craft Advisory for Hazardous Seas	ILM		11 hr
Jul 31, 4:43 PM EDT	Special Weather Statement	ILM	Florence	62 min
Jul 31, 5:47 PM EDT	Areal Flood Advisory	ILM	Georgetown, Williamsburg	73 min
Jul 31, 6:39 PM EDT	Special Weather Statement	ILM	Horry	66 min
Jul 31, 5:57 AM EDT	Special Weather Statement	ILM	Brunswick	93 min
Jul 31, 5:04 PM EDT	Special Weather Statement	ILM	Bladen	26 min
Jul 31, 6:34 PM EDT	Special Weather Statement	ILM	Columbus	56 min
Jul 31, 7:54 PM EDT	Areal Flood Advisory	ILM	Bladen, Robeson	81 min

Nearby

Coastal Flood Advisories in North Carolina, 2012 Every coastal 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.