Alert archive / North Carolina / Flash Flood Watches in 2014

Flash Flood Watch 3, NWS Raleigh, NC

August 9, 201416 counties in North Carolina

NWS Raleigh, NC issued this flash flood watch at Aug 9, 2014, 2:14 PM EDT for 16 counties in North Carolina. It took effect at Aug 9, 2014, 4:00 PM EDT. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Aug 9, 2014, 2:14 PM EDT (18:14 UTC)
In effect from
Aug 9, 2014, 4:00 PM EDT
Expired
Aug 10, 2014, 12:19 PM EDT
In force
20 hr
Issued by
NWS Raleigh, NC
Flood severity
None

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

The radar

The Raleigh/Durham radar (KRAX), 69 km from the middle of the area, began a volume at 18:14 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 12:00Z, 6.2 hours before the alert went out and 113 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2014-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 111 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2014-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
111 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 12:20 AM EDTSpecial Weather StatementRAHScotland40 min
Aug 9, 9:14 AM EDTSpecial Weather StatementRAHCumberland61 min
Aug 9, 9:34 AM EDTAreal Flood AdvisoryRAHEdgecombe, Franklin, Granville, Halifax, Nash, Person and 2 more3 hr
Aug 9, 11:35 AM EDTAreal Flood AdvisoryRAHCumberland3 hr
Aug 9, 12:59 PM EDTAreal Flood AdvisoryRAHRichmond3 hr

Nearby

Flash Flood Watches in North Carolina, 2014Every 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.