Alert archive / North Carolina / Areal Flood Advisories in 2021
Areal Flood Advisory 47, NWS Raleigh, NC
NWS Raleigh, NC issued this areal flood advisory at Jul 16, 2021, 1:32 PM EDT for Guilford County, North Carolina. It was in force for 92 min.
The area
The counties it named.
The facts
- Issued
- Jul 16, 2021, 1:32 PM EDT (17:32 UTC)
- Expired
- Jul 16, 2021, 3:04 PM EDT
- In force
- 92 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
County Guilford County, NC
The radar
The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 17:35 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, 5.5 hours before the alert went out and 10 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
- 172 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1372 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory 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 areal flood advisory went out at Jul 16, 12:15 PM EDT, 1 hour 17 minutes earlier.
Area forecast discussion, Jul 16, 12:15 PM EDT, 1 hour 17 minutes before
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</html>Hazardous weather outlook, Jul 16, 6:47 AM EDT, 6 hours 45 minutes before
Hazardous Weather Outlook National Weather Service Raleigh NC 647 AM EDT Fri Jul 16 2021 NCZ007>011-021>028-038>043-073>078-083>086-088-089-171100- Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake- Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Wayne-Anson- Richmond-Scotland-Hoke-Cumberland-Sampson- 647 AM EDT Fri Jul 16 2021 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Numerous showers and storms are possible Sunday through Tuesday as a front stalls out across central NC. Locally heavy rainfall will lead to the risk of flooding, especially in low lying or poor drainage areas. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 1:44 PM EDT | Flash Flood Warning | RAH | Guilford | 80 min |
| Jul 16, 3:14 PM EDT | Special Weather Statement | RAH | Orange | 31 min |
| Jul 16, 4:19 PM EDT | Special Weather Statement | RAH | Franklin, Nash | 41 min |
| Jul 16, 4:59 PM EDT | Special Weather Statement | RAH | Harnett | 46 min |
| Jul 16, 6:24 PM EDT | Special Weather Statement | RAH | Randolph | 66 min |
| Jul 16, 6:53 PM EDT | Special Weather Statement | RAH | Franklin | 67 min |
Nearby
Areal Flood Advisories in North Carolina, 2021Every areal flood advisory in 2021
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.