Alert archive / North Carolina / Flash Flood Watches in 2020
Flash Flood Watch 1, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood watch at May 19, 2020, 3:39 PM EDT for 23 counties in North Carolina. It took effect at May 19, 2020, 5:00 PM EDT. It was in force for 59 hr.
The area
The counties it named.
The facts
- Issued
- May 19, 2020, 3:39 PM EDT (19:39 UTC)
- In effect from
- May 19, 2020, 5:00 PM EDT
- Expired
- May 22, 2020, 4:00 AM EDT
- In force
- 59 hr
- Issued by
- NWS Raleigh, NC
- Flood severity
- None
All 23 counties
Alamance County, NC, Anson County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Forsyth County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Wake County, NC, Wayne County, NC
The radar
The Raleigh/Durham radar (KRAX), 76 km from the middle of the area, began a volume at 19:43 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.7 hours before the alert went out and 81 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 311 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 10:22 PM EDT | Special Weather Statement | RAH | Bladen | 23 min |
| May 19, 12:33 AM EDT | Special Weather Statement | RAH | Anson, Davidson, Stanly | 57 min |
| May 19, 5:06 AM EDT | Special Weather Statement | RAH | Davidson, Forsyth, Guilford, Randolph | 54 min |
Nearby
Flash Flood Watches in North Carolina, 2020Every flash flood watch in 2020
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.