Alert archive / South Carolina / Flood Watches in 2022

Flood Watch 1, NWS Columbia, SC

January 2, 202212 counties in South Carolina; Burke County, Richmond County, Georgia

NWS Columbia, SC issued this flood watch at Jan 2, 2022, 12:04 PM EST for 12 counties in South Carolina; Burke County, Richmond County, Georgia. It took effect at Jan 2, 2022, 4:00 PM EST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Jan 2, 2022, 12:04 PM EST (17:04 UTC)
In effect from: Jan 2, 2022, 4:00 PM EST
Expired: Jan 3, 2022, 4:00 AM EST
In force: 12 hr
Issued by: NWS Columbia, SC
Flood severity: None

Counties Burke County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 28 km from the middle of the area, began a volume at 17:04 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, 5.1 hours before the alert went out and 129 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 19 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 970 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 354 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 flood watch 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 flood watch went out at Jan 2, 6:47 AM EST, 5 hours 17 minutes earlier.

Area forecast discussion, Jan 2, 6:47 AM EST, 5 hours 17 minutes before

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Hazardous weather outlook, Jan 2, 4:56 AM EST, 7 hours 8 minutes before

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In the hours before

Special weather statement, Jan 2, 6:34 AM EST, 5 hours 30 minutes before

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Special weather statement, Jan 2, 7:03 AM EST, 5 hours 1 minute before

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Special weather statement, Jan 2, 7:48 AM EST, 4 hours 16 minutes before

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Special weather statement, Jan 2, 11:53 AM EST, 11 minutes before

Special Weather Statement
National Weather Service Columbia SC
1153 AM EST Sun Jan 2 2022

SCZ038-137-021715-
Southeastern Orangeburg SC-Clarendon SC-
1153 AM EST Sun Jan 2 2022

...Strong thunderstorms will impact portions of southeastern
Clarendon and southeastern Orangeburg Counties through 1215 PM EST...

At 1152 AM EST, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles east of Manning to near Santee Cooper
Regional Airport. Movement was southeast at 35 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Santee Cooper Regional Airport, Rocks Pond Campground and Marina,
Blounts Landing and Foreston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3350 8010 3350 8012 3348 8015 3346 8013
      3346 8015 3345 8015 3346 8016 3345 8017
      3345 8020 3344 8020 3345 8022 3339 8022
      3350 8038 3375 8008 3373 7997
TIME...MOT...LOC 1652Z 292DEG 33KT 3367 8006 3353 8019

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

NS

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 2, 6:34 AM EST	Special Weather Statement	CAE	Fairfield, Lancaster, Newberry	56 min
Jan 2, 7:03 AM EST	Special Weather Statement	CAE	McCormick, Newberry	42 min
Jan 2, 7:48 AM EST	Special Weather Statement	CAE	Edgefield, McCormick, Saluda	42 min
Jan 2, 11:53 AM EST	Special Weather Statement	CAE	Clarendon	22 min
Jan 2, 2:40 PM EST	Wind Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 12 more	22 hr

Nearby

Flood Watches in South Carolina, 2022 Flood Watches in Georgia, 2022 Every flood watch in 2022

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.