Alert archive / North Carolina / Flash Flood Warnings in 2021

Flash Flood Warning 21, NWS Raleigh, NC

September 22, 2021Moore County, Richmond County, Scotland County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Sep 22, 2021, 5:42 PM EDT for Moore County, Richmond County, Scotland County, North Carolina. It was in force for 112 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 22, 2021, 5:42 PM EDT (21:42 UTC)
Expired: Sep 22, 2021, 7:34 PM EDT
In force: 112 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

Counties Moore County, NC, Richmond County, NC, Scotland County, NC

The radar

The Raleigh/Durham radar (KRAX), 114 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 120 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

765 
WGUS52 KRAH 222142
FFWRAH
NCC125-153-165-222345-
/O.NEW.KRAH.FF.W.0021.210922T2142Z-210922T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Raleigh NC
542 PM EDT Wed Sep 22 2021

The National Weather Service in Raleigh has issued a

* Flash Flood Warning for...
  South Central Moore County in central North Carolina...
  Northeastern Richmond County in central North Carolina...
  North Central Scotland County in central North Carolina...

* Until 745 PM EDT.

* At 542 PM EDT, Doppler radar and automated rain gauges indicated 
  stationary thunderstorms producing heavy rain across the warned 
  area. Between 2 and 4 inches of rain have fallen. Additional 
  rainfall amounts of 1 to 2 inches are possible in the warned area. 
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  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...
  Pinehurst, Hamlet, Aberdeen, Hoffman, Pinebluff, Foxfire, 
  Sandhills Game Land and Camp Mackall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3517 7959 3515 7942 3507 7943 3506 7944
      3505 7945 3504 7946 3503 7945 3502 7944
      3490 7945 3490 7969

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

JD

1 follow-up statement

185 
WGUS72 KRAH 222334
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
734 PM EDT Wed Sep 22 2021

NCC125-153-165-222344-
/O.CAN.KRAH.FF.W.0021.000000T0000Z-210922T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Moore NC-Richmond NC-Scotland NC-
734 PM EDT Wed Sep 22 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL MOORE, 
NORTHEASTERN RICHMOND AND NORTH CENTRAL SCOTLAND COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3517 7959 3515 7942 3507 7943 3506 7944
      3505 7945 3504 7946 3503 7945 3502 7944
      3490 7945 3490 7969

$$

AS

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, 9:45 AM EDT	Areal Flood Advisory	RAH	Chatham, Hoke, Lee, Moore, Scotland	3 hr
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, 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

Flash Flood Warnings in North Carolina, 2021 Every 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.