Alert archive / North Carolina / Flood Watches in 2011

Flood Watch 1, NWS Newport/Morehead City, NC

August 25, 201112 counties in North Carolina

NWS Newport/Morehead City, NC issued this flood watch at Aug 25, 2011, 9:43 AM EDT for 12 counties in North Carolina. It took effect at Aug 26, 2011, 5:00 PM EDT. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued: Aug 25, 2011, 9:43 AM EDT (13:43 UTC)
In effect from: Aug 26, 2011, 5:00 PM EDT
Expired: Aug 27, 2011, 9:52 PM EDT
In force: 29 hr
Issued by: NWS Newport/Morehead City, NC
Flood severity: None

Counties Beaufort County, NC, Dare County, NC, Duplin County, NC, Greene County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Pamlico County, NC, Pitt County, NC, Tyrrell County, NC, Washington County, NC

The radar

The Morehead City radar (KMHX), 78 km from the middle of the area, began a volume at 13:43 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

Newport, NC (KMHX), launched 12:00Z, 1.7 hours before the alert went out and 77 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: 3375 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 25 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 Newport/Morehead City, NC wrote its last area forecast discussion before this flood watch went out at Aug 25, 9:25 AM EDT, 18 minutes earlier.

Area forecast discussion, Aug 25, 9:25 AM EDT, 18 minutes before

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Hazardous weather outlook, Aug 25, 6:09 AM EDT, 3 hours 34 minutes before

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The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 5:21 AM EDT	Hurricane Watch	MHX	Beaufort, Dare, Hyde, Jones, Pamlico, Tyrrell and 1 more	12 hr
Aug 25, 5:21 AM EDT	Hurricane Local Statement	MHX	Duplin, Greene, Lenoir, Martin, Pitt	7 hr
Aug 25, 12:18 PM EDT	Tropical Storm Watch	MHX	Duplin, Greene, Lenoir, Martin, Pitt	5 hr
Aug 25, 2:28 PM EDT	Special Weather Statement	MHX	Washington	32 min
Aug 25, 2:57 PM EDT	Special Weather Statement	MHX	Washington	63 min
Aug 25, 5:00 PM EDT	Hurricane Warning	MHX	Beaufort, Dare, Duplin, Greene, Hyde, Jones and 6 more	61 hr

Nearby

Flood Watches in North Carolina, 2011 Every flood watch in 2011

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.