Alert archive / North Carolina / Flash Flood Warnings in 2021
Flash Flood Warning 14, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Aug 7, 2021, 8:05 AM EDT for Randolph County, North Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2021, 8:05 AM EDT (12:05 UTC)
- Expired
- Aug 7, 2021, 10:48 AM EDT
- In force
- 3 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
County Randolph County, NC
The radar
The Raleigh/Durham radar (KRAX), 125 km from the middle of the area, began a volume at 12:04 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, 0.1 hours before the alert went out and 43 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
- 17 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
461
WGUS52 KRAH 071205
FFWRAH
NCC151-071500-
/O.NEW.KRAH.FF.W.0014.210807T1205Z-210807T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Raleigh NC
805 AM EDT Sat Aug 7 2021
The National Weather Service in Raleigh has issued a
* Flash Flood Warning for...
Randolph County in central North Carolina...
* Until 1100 AM EDT.
* At 805 AM EDT, Doppler radar indicated repeating showers and
occasional thunderstorms producing heavy rain across the warned
area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by showers and thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
High Point, Asheboro, Randleman, North Carolina Zoo, Seagrove,
Archdale, Liberty, Ramseur, Franklinville, Staley, Ulah, Randleman
Regional Reservior Marina and Martha.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3568 8006 3582 8002 3592 7997 3590 7954
3573 7955 3553 7976 3551 7988 3551 8007
FLASH FLOOD...RADAR INDICATED
$$
261 follow-up statement
621
WGUS72 KRAH 071448
FFSRAH
Flash Flood Statement
National Weather Service Raleigh NC
1048 AM EDT Sat Aug 7 2021
NCC151-071458-
/O.CAN.KRAH.FF.W.0014.000000T0000Z-210807T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Randolph NC-
1048 AM EDT Sat Aug 7 2021
...FLASH FLOOD WARNING IS CANCELLED FOR RANDOLPH COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3568 8006 3582 8002 3592 7997 3590 7954
3573 7955 3553 7976 3551 7988 3551 8007
$$The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 6:22 AM EDT | Special Weather Statement | RAH | Alamance, Guilford, Randolph | 53 min |
| Aug 7, 6:38 AM EDT | Special Weather Statement | RAH | Wayne, Wilson | 52 min |
| Aug 7, 8:53 AM EDT | Areal Flood Advisory | RAH | Davidson, Forsyth, Guilford, Randolph | 112 min |
| Aug 7, 9:28 AM EDT | Flash Flood Warning | RAH | Guilford | 81 min |
| Aug 7, 10:14 AM EDT | Areal Flood Advisory | RAH | Durham, Granville, Orange, Wake | 61 min |
| Aug 7, 11:41 AM EDT | Areal Flood Advisory | RAH | Franklin, Vance, Warren | 64 min |
| Aug 7, 12:18 PM EDT | Special Weather Statement | RAH | Halifax, Nash | 57 min |
| Aug 7, 6:21 PM EDT | Flash Flood Warning | RAH | Sampson, Wayne | 2 hr |
Nearby
Flash Flood Warnings in North Carolina, 2021Every flash flood warning 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.