Alert archive / North Carolina / Areal Flood Advisories in 2021
Areal Flood Advisory 97, NWS Raleigh, NC
NWS Raleigh, NC issued this areal flood advisory at Sep 22, 2021, 9:45 AM EDT for 5 counties in North Carolina. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 22, 2021, 9:45 AM EDT (13:45 UTC)
- Expired
- Sep 22, 2021, 12:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
Counties Chatham County, NC, Hoke County, NC, Lee County, NC, Moore County, NC, Scotland County, NC
The radar
The Raleigh/Durham radar (KRAX), 87 km from the middle of the area, began a volume at 13:48 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, 1.8 hours before the alert went out and 104 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
- 410 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 516 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 117 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 Sep 22, 7:45 AM EDT, 2 hours earlier.
Area forecast discussion, Sep 22, 7:45 AM EDT, 2 hours before
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</html>Hazardous weather outlook, Sep 22, 4:37 AM EDT, 5 hours 8 minutes before
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Special weather statement, Sep 22, 5:42 AM EDT, 4 hours 3 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 |
|---|---|---|---|---|
| Sep 22, 5:42 AM EDT | Special Weather Statement | RAH | Montgomery | 63 min |
| Sep 22, 12:12 PM EDT | Areal Flood Advisory | RAH | Cumberland, Durham, Granville, Harnett, Johnston, Orange and 3 more | 2 hr |
| Sep 22, 3:17 PM EDT | Areal Flood Advisory | RAH | Alamance, Chatham, Orange | 118 min |
| Sep 22, 4:44 PM EDT | Special Weather Statement | RAH | Randolph | 61 min |
| Sep 22, 4:47 PM EDT | Special Weather Statement | RAH | Anson, Montgomery | 58 min |
| Sep 22, 5:02 PM EDT | Areal Flood Advisory | RAH | Hoke, Moore, Richmond, Scotland | 3 hr |
| Sep 22, 5:16 PM EDT | Special Weather Statement | RAH | Chatham | 59 min |
| Sep 22, 5:42 PM EDT | Flash Flood Warning | RAH | Moore, Richmond, Scotland | 112 min |
| Sep 22, 6:00 PM EDT | Special Weather Statement | RAH | Alamance, Orange | 60 min |
| Sep 22, 6:47 PM EDT | Special Weather Statement | RAH | Montgomery, Moore, Richmond | 58 min |
| Sep 22, 6:51 PM EDT | Areal Flood Advisory | RAH | Anson, Montgomery, Moore, Richmond | 3 hr |
| Sep 22, 7:07 PM EDT | Flash Flood Warning | RAH | Montgomery, Moore, Randolph | 3 hr |
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.