Alert archive / North Carolina / Flash Flood Watches in 2010
Flash Flood Watch 3, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood watch at Aug 19, 2010, 10:12 AM EDT for 31 counties in North Carolina. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 2010, 10:12 AM EDT (14:12 UTC)
- Expired
- Aug 20, 2010, 4:00 AM EDT
- In force
- 18 hr
- Issued by
- NWS Raleigh, NC
- Flood severity
- None
All 31 counties
Alamance County, NC, Anson County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC
The radar
The Raleigh/Durham radar (KRAX), 45 km from the middle of the area, began a volume at 14:15 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, 2.2 hours before the alert went out and 93 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.
- Mixed-layer CAPE
- 870 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
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 Aug 19, 7:35 AM EDT, 2 hours 37 minutes earlier.
Area forecast discussion, Aug 19, 7:35 AM EDT, 2 hours 37 minutes before
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</html>Hazardous weather outlook, Aug 19, 5:37 AM EDT, 4 hours 35 minutes before
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Special weather statement, Aug 19, 6:01 AM EDT, 4 hours 11 minutes before
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</html>The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:10 PM EDT | Severe Thunderstorm Warning | RAH | Johnston, Nash, Wilson | 27 min |
| Aug 18, 8:32 PM EDT | Special Weather Statement | RAH | Wayne | 43 min |
| Aug 18, 8:51 PM EDT | Special Weather Statement | RAH | Sampson | 39 min |
| Aug 18, 9:09 PM EDT | Special Weather Statement | RAH | Cumberland | 66 min |
| Aug 18, 9:30 PM EDT | Areal Flood Advisory | RAH | Sampson | 90 min |
| Aug 18, 9:34 PM EDT | Areal Flood Advisory | RAH | Cumberland | 116 min |
| Aug 18, 9:44 PM EDT | Special Weather Statement | RAH | Sampson | 61 min |
| Aug 18, 9:58 PM EDT | Severe Thunderstorm Warning | RAH | Sampson | 45 min |
| Aug 18, 10:50 PM EDT | Flash Flood Warning | RAH | Sampson | 3 hr |
| Aug 18, 11:02 PM EDT | Special Weather Statement | RAH | Forsyth | 58 min |
| Aug 18, 11:20 PM EDT | Special Weather Statement | RAH | Cumberland | 55 min |
| Aug 18, 11:28 PM EDT | Areal Flood Advisory | RAH | Cumberland | 3 hr |
| Aug 19, 1:08 AM EDT | Areal Flood Advisory | RAH | Hoke | 112 min |
| Aug 19, 2:14 AM EDT | Flash Flood Warning | RAH | Hoke, Scotland | 2 hr |
| Aug 19, 2:27 AM EDT | Areal Flood Advisory | RAH | Cumberland | 2 hr |
| Aug 19, 6:01 AM EDT | Special Weather Statement | RAH | Anson, Montgomery, Richmond, Stanly | 119 min |
| Aug 19, 4:59 PM EDT | Special Weather Statement | RAH | Stanly | 61 min |
| Aug 19, 6:46 PM EDT | Special Weather Statement | RAH | Montgomery | 59 min |
| Aug 19, 7:22 PM EDT | Flash Flood Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 4 hr |
| Aug 19, 7:31 PM EDT | Special Weather Statement | RAH | Moore | 59 min |
Nearby
Flash Flood Watches in North Carolina, 2010Every flash flood watch in 2010
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.