Alert archive / South Carolina / Areal Flood Warnings in 2018
Areal Flood Warning 3, NWS Charleston, SC
NWS Charleston, SC issued this areal flood warning at Dec 14, 2018, 2:44 PM EST for Dorchester County, South Carolina. It was in force for 5 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 14, 2018, 2:44 PM EST (19:44 UTC)
- Expired
- Dec 19, 2018, 10:27 AM EST
- In force
- 5 days
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
County Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 76 km from the middle of the area, began a volume at 19:47 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, 7.7 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
- 13 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 484 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 256 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, SC wrote its last area forecast discussion before this areal flood warning went out at Dec 14, 2:16 PM EST, 28 minutes earlier.
Area forecast discussion, Dec 14, 2:16 PM EST, 28 minutes before
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</html>Hazardous weather outlook, Dec 14, 4:20 AM EST, 10 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 420 AM EST Fri Dec 14 2018 GAZ087-088-099>101-114>119-137>141-SCZ040-042-043-047>049-051-150930- Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans- Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham-Long- Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh- Allendale-Hampton-Inland Colleton-Inland Jasper-Beaufort- Coastal Colleton-Coastal Jasper- 420 AM EST Fri Dec 14 2018 This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...Today and tonight. Heavy Rainfall: A storm system is expected to bring two to three inches of rainfall to the region, mainly today and tonight. Localized flooding is possible, mainly in poor drainage areas. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Heavy Rainfall: A band of moderate to heavy showers will sweep across the region Saturday morning. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. SCZ044-045-050-052-150930- Dorchester-Inland Berkeley-Charleston-Tidal Berkeley- 420 AM EST Fri Dec 14 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING... This Hazardous Weather Outlook is for southeast South Carolina. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time. AMZ330-350-352-354-374-150930- Charleston Harbor- Waters from South Santee River to Edisto Beach SC out 20 NM- Waters from Edisto Beach SC to Savannah GA out 20 NM- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 420 AM EST Fri Dec 14 2018 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
In the hours before
Local storm report, Dec 14, 9:33 AM EST, 5 hours 11 minutes before
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</html>Local storm report, Dec 14, 10:29 AM EST, 4 hours 15 minutes before
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</html>Local storm report, Dec 14, 11:39 AM EST, 3 hours 5 minutes before
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</html>Local storm report, Dec 14, 11:42 AM EST, 3 hours 2 minutes before
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</html>Local storm report, Dec 14, 12:26 PM EST, 2 hours 18 minutes before
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</html>Local storm report, Dec 14, 12:47 PM EST, 1 hour 57 minutes before
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</html>The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 14, 3:23 AM EST | Flash Flood Watch | CHS | Berkeley, Dorchester | 27 hr |
| Dec 14, 5:48 AM EST | Areal Flood Advisory | CHS | Charleston | 87 min |
| Dec 14, 7:33 AM EST | Flash Flood Warning | CHS | Charleston | 4 hr |
| Dec 14, 9:18 AM EST | Areal Flood Advisory | CHS | Berkeley, Charleston, Dorchester | 117 min |
Nearby
Areal Flood Warnings in South Carolina, 2018Every areal flood warning in 2018
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.