Alert archive / South Carolina / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Wilmington, NC
NWS Wilmington, NC issued this red flag warning at Apr 21, 2021, 3:17 AM EDT for 8 counties in South Carolina; Robeson County, North Carolina. It took effect at Apr 21, 2021, 2:00 PM EDT. It was in force for 5 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 21, 2021, 3:17 AM EDT (07:17 UTC)
- In effect from
- Apr 21, 2021, 2:00 PM EDT
- Expired
- Apr 21, 2021, 7:00 PM EDT
- In force
- 5 hr
- Issued by
- NWS Wilmington, NC
Counties Robeson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC
The radar
The Wilmington radar (KLTX), 96 km from the middle of the area, began a volume at 07:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 4:30 PM EDT | WILDFIRE 0 | 3 Ese Loris, SC | TWO STRUCTURES WERE DAMAGED BY A WILDFIRE THAT CROSSED SC HIGHWAY 9. MULTIPLE RESIDENTS ALONG FLAG PATCH ROAD HAVE BEEN EVACUATED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 7.3 hours before the alert went out and 144 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
- 13 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1413 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
330 WWUS82 KILM 210717 RFWILM URGENT - FIRE WEATHER MESSAGE National Weather Service Wilmington NC 317 AM EDT Wed Apr 21 2021 NCZ087-SCZ017-023-024-032-033-039-212300- /O.UPG.KILM.FW.A.0001.210421T1800Z-210421T2300Z/ /O.NEW.KILM.FW.W.0001.210421T1800Z-210421T2300Z/ Robeson-Marlboro-Darlington-Dillon-Florence-Marion-Williamsburg- 317 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEASTERN SOUTH CAROLINA AND ROBESON COUNTY NORTH CAROLINA... The National Weather Service in Wilmington has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM this afternoon to 7 PM EDT this evening. The Fire Weather Watch is no longer in effect. * Affected Area...In North Carolina, Robeson county. In South Carolina, Marlboro, Darlington, Dillon, Florence, Marion and Williamsburg counties. * Winds...West 15 to 20 mph with gusts up to 30 mph. * Relative Humidity...As low as 25 percent. * Impacts...Conditions will be conducive for rapid fire growth. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will create explosive fire growth potential. && $$ SCZ054>056-058-059-212300- /O.NEW.KILM.FW.W.0001.210421T1800Z-210421T2300Z/ Coastal Horry-Inland Georgetown-Coastal Georgetown-Central Horry- Northern Horry- 317 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEASTERN SOUTH CAROLINA... The National Weather Service in Wilmington has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM this afternoon to 7 PM EDT this evening. * Affected Area...In South Carolina, Horry and Georgetown counties. * Winds...West 15 to 20 mph with gusts up to 30 mph. * Relative Humidity...As low as 25 percent. * Impacts...Conditions will be conducive for rapid fire growth. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will create explosive fire growth potential. && $$ TRA
1 follow-up statement
608 WWUS82 KILM 212253 RFWILM URGENT - FIRE WEATHER MESSAGE National Weather Service Wilmington NC 653 PM EDT Wed Apr 21 2021 NCZ087-SCZ017-023-024-032-033-039-054>056-058-059-220000- /O.EXP.KILM.FW.W.0001.000000T0000Z-210421T2300Z/ Robeson-Marlboro-Darlington-Dillon-Florence-Marion-Williamsburg- Coastal Horry-Inland Georgetown-Coastal Georgetown-Central Horry- Northern Horry- 653 PM EDT Wed Apr 21 2021 ...RED FLAG WARNING WILL EXPIRE AT 700 PM... The Red Flag Warning for combined effects of low humidity and strong wind will expire at 700 pm. Critically low humidity is expected again on Thursday, although winds will not be as strong. A Fire Danger Statement is planned for Thursday to address the critically low relative humidity in afternoon. $$ 8
The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 8:05 PM EDT | Beach Hazards Statement | ILM | Georgetown, Horry | 24 hr |
Nearby
Red Flag Warnings in South Carolina, 2021Red Flag Warnings in North Carolina, 2021Every red flag 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.