Alert archive / South Carolina / Areal Flood Advisories in 2017
Areal Flood Advisory 13, NWS Columbia, SC
NWS Columbia, SC issued this areal flood advisory at Apr 23, 2017, 8:54 PM EDT for Aiken County, Barnwell County, South Carolina. It was in force for 111 min.
The area
The counties it named.
The facts
- Issued
- Apr 23, 2017, 8:54 PM EDT (00:54 UTC)
- Expired
- Apr 23, 2017, 10:45 PM EDT
- In force
- 111 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
Counties Aiken County, SC, Barnwell County, SC
The radar
The Columbia radar (KCAE), 72 km from the middle of the area, began a volume at 00:57 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, 0.9 hours before the alert went out and 154 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
- 487 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 921 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Columbia, SC wrote its last area forecast discussion before this areal flood advisory went out at Apr 23, 5:59 PM EDT, 2 hours 55 minutes earlier.
Area forecast discussion, Apr 23, 5:59 PM EDT, 2 hours 55 minutes before
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Hazardous Weather Outlook National Weather Service Columbia SC 1107 AM EDT Sun Apr 23 2017 GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-241515- Lincoln-McDuffie-Columbia-Richmond-Burke-Lancaster-Chesterfield- McCormick-Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon- Bamberg- 1107 AM EDT Sun Apr 23 2017 ...FLASH FLOOD WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH MONDAY EVENING... This Hazardous Weather Outlook is for the Midlands of South Carolina and the Central Savannah River area of Georgia. .DAY ONE...This Afternoon 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. There is a marginal risk of severe weather this afternoon and tonight as a cold front pushes into the region. Damaging winds... large hail and isolated tornadoes are the main threats. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Isolated strong storms are expected on Monday with an upper level low moving over the region. Large hail is possible and the primary threat along. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed.
In the hours before
Special weather statement, Apr 23, 4:57 PM EDT, 3 hours 57 minutes before
Special Weather Statement National Weather Service Columbia SC 457 PM EDT SUN APR 23 2017 SCZ041-232115- Bamberg- 457 PM EDT SUN APR 23 2017 ...A STRONG THUNDERSTORM WILL AFFECT PARTS OF BAMBERG COUNTY... At 455 PM EDT, a strong thunderstorm was located 8 miles north of Lodge, or 8 miles south-southwest of Bamberg, moving northeast at 30 mph. Wind gusts up to 50 mph and dime size hail are possible with this storm. Locations impacted include... The area of Bamberg county north of Ehrhardt and east of Bamberg. LAT...LON 3309 8100 3314 8105 3329 8100 3318 8083 TIME...MOT...LOC 2055Z 203DEG 25KT 3318 8098
Special weather statement, Apr 23, 5:33 PM EDT, 3 hours 21 minutes before
Special Weather Statement National Weather Service Columbia SC 533 PM EDT SUN APR 23 2017 SCZ036-232145- Orangeburg- 533 PM EDT SUN APR 23 2017 ...A STRONG THUNDERSTORM WILL AFFECT parts of WEST ORANGEBURG COUNTY... At 530 PM EDT, a strong thunderstorm was near the Orangeburg and Barnwell county line just southeast of Springfield. Movement was northeast near 25 mph and toward the area between Neeses and Springfield. The storm may contain wind gusts near 40 mph and dime-size hail along with dangerous lightning and brief heavy rain. LAT...LON 3343 8119 3347 8127 3359 8121 3353 8108 TIME...MOT...LOC 2130Z 209DEG 18KT 3349 8119
Special weather statement, Apr 23, 6:35 PM EDT, 2 hours 19 minutes before
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</html>The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 8:00 PM EDT | Special Weather Statement | CAE | Richland | 30 min |
| Apr 23, 8:17 PM EDT | Special Weather Statement | CAE | Kershaw | 28 min |
| Apr 23, 10:56 PM EDT | Special Weather Statement | CAE | Lexington | 49 min |
| Apr 23, 11:20 PM EDT | Areal Flood Advisory | CAE | Lexington, Richland | 115 min |
| Apr 24, 12:05 AM EDT | Flash Flood Warning | CAE | Richland | 115 min |
| Apr 24, 1:13 AM EDT | Areal Flood Advisory | CAE | Bamberg, Calhoun, Orangeburg | 2 hr |
| Apr 24, 1:49 AM EDT | Special Weather Statement | CAE | Clarendon | 41 min |
| Apr 24, 2:13 AM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 33 min |
| Apr 24, 2:28 AM EDT | Areal Flood Advisory | CAE | Calhoun, Clarendon, Sumter | 62 min |
| Apr 24, 6:25 AM EDT | Areal Flood Advisory | CAE | Calhoun, Lexington, Orangeburg, Richland | 2 hr |
| Apr 24, 6:32 AM EDT | Areal Flood Advisory | CAE | Calhoun, Clarendon, Orangeburg, Sumter | 118 min |
| Apr 24, 8:56 AM EDT | Areal Flood Advisory | CAE | Calhoun, Clarendon, Kershaw, Richland, Sumter | 64 min |
| Apr 24, 9:37 AM EDT | Areal Flood Advisory | CAE | Clarendon, Kershaw, Lee, Sumter | 53 min |
| Apr 24, 10:23 AM EDT | Areal Flood Advisory | CAE | Aiken, Edgefield | 67 min |
| Apr 24, 11:33 AM EDT | River Flood Warning | CAE | Chesterfield, Marlboro | 6 days |
| Apr 24, 11:33 AM EDT | River Flood Warning | CAE | Fairfield, Kershaw, Lancaster | 5 days |
| Apr 24, 11:47 AM EDT | Areal Flood Advisory | CAE | Chesterfield, Kershaw, Lancaster | 118 min |
| Apr 24, 2:31 PM EDT | Special Weather Statement | CAE | Calhoun | 44 min |
| Apr 24, 2:33 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Lexington, Richland | 27 min |
| Apr 24, 4:35 PM EDT | Special Weather Statement | CAE | Orangeburg | 25 min |
| Apr 24, 4:52 PM EDT | Special Weather Statement | CAE | Orangeburg | 53 min |
| Apr 24, 5:03 PM EDT | Special Weather Statement | CAE | Orangeburg | 57 min |
| Apr 24, 5:18 PM EDT | Areal Flood Advisory | CAE | Orangeburg | 117 min |
| Apr 24, 5:22 PM EDT | Flash Flood Warning | CAE | Orangeburg | 53 min |
| Apr 24, 5:35 PM EDT | Special Weather Statement | CAE | Orangeburg | 40 min |
| Apr 24, 6:00 PM EDT | Special Weather Statement | CAE | Orangeburg | 45 min |
| Apr 24, 6:45 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 30 min |
| Apr 24, 6:49 PM EDT | Flash Flood Warning | CAE | Orangeburg | 56 min |
| Apr 24, 7:33 PM EDT | Special Weather Statement | CAE | Calhoun, Orangeburg | 57 min |
| Apr 23, 9:13 PM EDT | Areal Flood Advisory | CAE | Burke | 2 hr |
| Apr 24, 9:08 AM EDT | Special Weather Statement | CAE | Richmond | 37 min |
Nearby
Areal Flood Advisories in South Carolina, 2017Every areal flood advisory in 2017
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.