Alert archive / North Carolina / Flash Flood Watches in 2021
Flash Flood Watch 4, NWS Wilmington, NC
NWS Wilmington, NC issued this flash flood watch at Aug 3, 2021, 3:20 AM EDT for 5 counties in North Carolina; 5 counties in South Carolina. It took effect at Aug 4, 2021, 12:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Aug 3, 2021, 3:20 AM EDT (07:20 UTC)
- In effect from
- Aug 4, 2021, 12:00 PM EDT
- Expired
- Aug 3, 2021, 3:24 AM EDT
- In force
- Issued by
- NWS Wilmington, NC
- Flood severity
- None
Counties Bladen County, NC, Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Pender County, NC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Williamsburg County, SC
The radar
The Wilmington radar (KLTX), 38 km from the middle of the area, began a volume at 07:24 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
Charleston AFB, SC (KCHS), launched 00:00Z, 7.3 hours before the alert went out and 169 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
- 1210 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
075 WGUS62 KILM 030720 FFAILM URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Wilmington NC 320 AM EDT Tue Aug 3 2021 NCZ096-099-105>110-SCZ032-033-039-054>056-058-059-031930- /O.NEW.KILM.FF.A.0004.210804T1600Z-210805T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bladen-Columbus-Inland Pender-Coastal Pender-Inland New Hanover- Coastal New Hanover-Inland Brunswick-Coastal Brunswick-Florence- Marion-Williamsburg-Coastal Horry-Inland Georgetown-Coastal Georgetown-Central Horry-Northern Horry- Including the cities of Carolina Beach, Boiling Spring Lakes, Shallotte, Burgaw, Masonboro, Georgetown, Murrells Inlet, Seagate, Bladenboro, Kingstree, Garden City, Oak Island, Myrtle Beach, Mullins, Little River, Southport, Socastee, Loris, Ogden, Wilmington, Lake Waccamaw, Surf City, Chadbourn, North Myrtle Beach, Green Sea, Leland, Tabor City, Whiteville, Myrtle Grove, Conway, Longs, Bucksport, Long Beach, Marion, Andrews, Aynor, Sunset Beach, Florence, and Elizabethtown 320 AM EDT Tue Aug 3 2021 ...FLASH FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING... The National Weather Service in Wilmington has issued a * Flash Flood Watch for portions of southeast North Carolina and northeast South Carolina, including the following areas, in southeast North Carolina, Bladen, Coastal Brunswick, Coastal New Hanover, Coastal Pender, Columbus, Inland Brunswick, Inland New Hanover and Inland Pender. In northeast South Carolina, Central Horry, Coastal Georgetown, Coastal Horry, Florence, Inland Georgetown, Marion, Northern Horry and Williamsburg. * From Wednesday afternoon through Wednesday evening. * A wave of low pressure will move up along a stalled front over the Carolina coast bringing periods of torrential rain in showers and thunderstorms this afternoon through this evening. Expect rainfall totals of 2 to 4 inches mainly east of I-95 with localized greater amounts, especially closer to the coast. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. You should closely monitor this potentially dangerous weather situation. Be prepared to take action should Flash Flood Warnings be issued for your area, and never drive through flooded roadways. && $$ RGZ
1 follow-up statement
498 WGUS62 KILM 030724 FFAILM Flood Watch National Weather Service Wilmington NC 324 AM EDT Tue Aug 3 2021 NCZ096-099-105>110-SCZ032-033-039-054>056-058-059-030830- /O.CAN.KILM.FF.A.0004.210804T1600Z-210805T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bladen-Columbus-Inland Pender-Coastal Pender-Inland New Hanover- Coastal New Hanover-Inland Brunswick-Coastal Brunswick-Florence- Marion-Williamsburg-Coastal Horry-Inland Georgetown-Coastal Georgetown-Central Horry-Northern Horry- Including the cities of Carolina Beach, Boiling Spring Lakes, Shallotte, Burgaw, Masonboro, Georgetown, Murrells Inlet, Seagate, Bladenboro, Kingstree, Garden City, Oak Island, Myrtle Beach, Mullins, Little River, Southport, Socastee, Loris, Ogden, Wilmington, Lake Waccamaw, Surf City, Chadbourn, North Myrtle Beach, Green Sea, Leland, Tabor City, Whiteville, Myrtle Grove, Conway, Longs, Bucksport, Long Beach, Marion, Andrews, Aynor, Sunset Beach, Florence, and Elizabethtown 324 AM EDT Tue Aug 3 2021 ...FLASH FLOOD WATCH IS CANCELLED The Flash Flood Watch for portions of southeast North Carolina and northeast South Carolina, including the following areas, in southeast North Carolina, Bladen, Coastal Brunswick, Coastal New Hanover, Coastal Pender, Columbus, Inland Brunswick, Inland New Hanover and Inland Pender. In northeast South Carolina, Central Horry, Coastal Georgetown, Coastal Horry, Florence, Inland Georgetown, Marion, Northern Horry and Williamsburg has been cancelled. This Flash Flood Watch is cancelled for Wednesday and will be re- $$ RGZ
The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:30 AM EDT | Flash Flood Watch | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender | 24 hr |
| Aug 3, 3:23 PM EDT | Areal Flood Advisory | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender | 112 min |
| Aug 3, 4:08 PM EDT | Small Craft Advisory | ILM | 12 hr | |
| Aug 3, 5:33 PM EDT | Areal Flood Advisory | ILM | Columbus | 81 min |
| Aug 3, 7:54 PM EDT | Areal Flood Advisory | ILM | Brunswick | 2 hr |
| Aug 3, 11:38 AM EDT | Areal Flood Advisory | ILM | Florence, Marion | 85 min |
| Aug 3, 12:01 PM EDT | Areal Flood Advisory | ILM | Georgetown, Horry | 103 min |
| Aug 3, 12:55 PM EDT | Flash Flood Warning | ILM | Darlington, Dillon, Florence, Marion | 3 hr |
| Aug 3, 1:12 PM EDT | Flash Flood Warning | ILM | Horry | 2 hr |
| Aug 3, 4:00 PM EDT | Flash Flood Warning | ILM | Dillon, Marion | 56 min |
| Aug 3, 4:04 PM EDT | Areal Flood Advisory | ILM | Horry | 86 min |
Nearby
Flash Flood Watches in North Carolina, 2021Flash Flood Watches in South Carolina, 2021Every flash flood watch 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.