Alert archive / South Carolina / Flash Flood Watches in 2020

Flash Flood Watch 3, NWS Wilmington, NC

May 29, 2020Bladen County, Columbus County, Robeson County, North Carolina; 6 counties in South Carolina

NWS Wilmington, NC issued this flash flood watch at May 29, 2020, 8:21 AM EDT for Bladen County, Columbus County, Robeson County, North Carolina; 6 counties in South Carolina. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
May 29, 2020, 8:21 AM EDT (12:21 UTC)
Expired
May 30, 2020, 12:00 AM EDT
In force
16 hr
Issued by
NWS Wilmington, NC
Flood severity
None

Counties Bladen County, NC, Columbus County, NC, Robeson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC

The radar

The Wilmington radar (KLTX), 85 km from the middle of the area, began a volume at 12:22 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 12:00Z, 0.4 hours before the alert went out and 172 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2020-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2020-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
157 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, NC wrote its last area forecast discussion before this flash flood watch went out at May 29, 7:52 AM EDT, 29 minutes earlier.

Area forecast discussion, May 29, 7:52 AM EDT, 29 minutes before
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Hazardous weather outlook, May 29, 4:02 AM EDT, 4 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Wilmington NC
402 AM EDT Fri May 29 2020

NCZ087-SCZ017-023-024-032-033-039-300815-
Robeson-Marlboro-Darlington-Dillon-Florence-Marion-Williamsburg-
402 AM EDT Fri May 29 2020

This Hazardous Weather Outlook is for southeast North Carolina and
northeast South Carolina.

.DAY ONE...Today and tonight.

Thunderstorms with heavy rainfall could lead to localized flooding
today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

AMZ250-252-254-256-NCZ096-099-105-107-109-SCZ055-058-059-300815-
Coastal waters from Surf City to Cape Fear NC out 20 nm-
Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm-
Coastal waters from Little River Inlet to Murrells Inlet SC out
20 nm-
Coastal waters from Murrells Inlet to South Santee River SC out
20 nm-Bladen-Columbus-Inland Pender-Inland New Hanover-
Inland Brunswick-Inland Georgetown-Central Horry-Northern Horry-
402 AM EDT Fri May 29 2020

This Hazardous Weather Outlook is for the adjacent Coastal Waters,
southeast North Carolina and northeast South Carolina.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ106-108-110-SCZ054-056-300815-
Coastal Pender-Coastal New Hanover-Coastal Brunswick-Coastal Horry-
Coastal Georgetown-
402 AM EDT Fri May 29 2020

This Hazardous Weather Outlook is for southeast North Carolina and
northeast South Carolina.

.DAY ONE...Today and tonight.

There is a moderate risk of rip currents at the beaches today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

9

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 5:08 AM EDTBeach Hazards StatementILMBrunswick, New Hanover, Pender15 hr
May 29, 9:57 AM EDTRiver Flood WarningILMBladen5 days
May 29, 2:40 PM EDTSpecial Weather StatementILMRobeson65 min
May 29, 3:17 PM EDTAreal Flood AdvisoryILMBladen, Columbus, Robeson91 min
May 29, 12:49 PM EDTSpecial Weather StatementILMDarlington56 min
May 29, 12:59 PM EDTSevere Thunderstorm WarningILMDarlington46 min
May 29, 1:50 PM EDTSpecial Weather StatementILMMarlboro40 min
May 29, 2:09 PM EDTSevere Thunderstorm WarningILMDillon36 min
May 29, 4:24 PM EDTSpecial Weather StatementILMHorry66 min
May 29, 5:54 PM EDTSpecial Weather StatementILMWilliamsburg51 min
May 29, 6:15 PM EDTSpecial Weather StatementILMFlorence, Marion60 min

Nearby

Flash Flood Watches in South Carolina, 2020Flash Flood Watches in North Carolina, 2020Every flash flood watch in 2020

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.