Alert archive / North Carolina / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS Raleigh, NC

September 12, 201416 counties in North Carolina

NWS Raleigh, NC issued this flash flood watch at Sep 12, 2014, 9:30 PM EDT for 16 counties in North Carolina. It was in force for 27 hr.

The area

The counties it named.

The facts

Issued: Sep 12, 2014, 9:30 PM EDT (01:30 UTC)
Expired: Sep 14, 2014, 12:33 AM EDT
In force: 27 hr
Issued by: NWS Raleigh, NC
Flood severity: None

Counties Anson County, NC, Cumberland County, NC, Davidson County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 79 km from the middle of the area, began a volume at 01:33 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 00:00Z, 1.5 hours before the alert went out and 106 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: 1 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 98 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 flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this flash flood watch went out at Sep 12, 3:05 PM EDT, 6 hours 25 minutes earlier.

Area forecast discussion, Sep 12, 3:05 PM EDT, 6 hours 25 minutes before

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Hazardous weather outlook, Sep 12, 3:56 PM EDT, 5 hours 34 minutes before

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In the hours before

Special weather statement, Sep 12, 4:27 PM EDT, 5 hours 3 minutes before

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Special weather statement, Sep 12, 4:49 PM EDT, 4 hours 41 minutes before

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Special weather statement, Sep 12, 5:45 PM EDT, 3 hours 45 minutes before

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Special weather statement, Sep 12, 6:04 PM EDT, 3 hours 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 12, 10:00 PM EDT	Areal Flood Advisory	RAH	Johnston, Wayne	44 hr
Sep 13, 4:09 PM EDT	Special Weather Statement	RAH	Sampson, Wayne	51 min
Sep 13, 6:39 PM EDT	Special Weather Statement	RAH	Johnston, Wayne	81 min
Sep 13, 7:12 PM EDT	Areal Flood Advisory	RAH	Johnston, Wayne	3 hr

Nearby

Flash Flood Watches in North Carolina, 2014 Every flash flood watch in 2014

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.