Alert archive / South Carolina / Lake Wind Advisories in 2007

Lake Wind Advisory 23, NWS Columbia, SC

April 15, 200716 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this lake wind advisory at Apr 15, 2007, 3:48 PM EDT for 16 counties in South Carolina; 5 counties in Georgia. It took effect at Apr 16, 2007, 3:34 PM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Apr 15, 2007, 3:48 PM EDT (19:48 UTC)
In effect from: Apr 16, 2007, 3:34 PM EDT
Expired: Apr 16, 2007, 9:00 PM EDT
In force: 5 hr
Issued by: NWS Columbia, SC

All 21 counties

Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 28 km from the middle of the area, began a volume at 19:50 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, 7.8 hours before the alert went out and 162 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: 948 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 339 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 6.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this lake wind 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 lake wind advisory went out at Apr 15, 3:16 PM EDT, 32 minutes earlier.

Area forecast discussion, Apr 15, 3:16 PM EDT, 32 minutes before

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Hazardous weather outlook, Apr 15, 9:15 AM EDT, 6 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
915 AM EDT SUN APR 15 2007

GAZ040-063>065-077-SCZ015-016-018-020>022-025>028-030-161315-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-AIKEN-
915 AM EDT SUN APR 15 2007

...LAKE WIND ADVISORY IN EFFECT UNTIL NOON EDT TODAY...
...WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...LAKE WIND ADVISORY IN EFFECT FROM 8 PM TO 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS WITH DAMAGING WIND AND HAIL COULD OCCUR THIS
MORNING. IT WILL BE WINDY TODAY WITH WEST WINDS 30 TO 40 MPH.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE WIND ADVISORY AND LAKE
WIND ADVISORY IN EFFECT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
A LAKE WIND ADVISORY WILL LIKELY BE NEEDED MONDAY.

.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

SCZ029-031-035>038-041-161315-
LEE-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-BAMBERG-
915 AM EDT SUN APR 15 2007

...LAKE WIND ADVISORY IN EFFECT UNTIL NOON EDT TODAY...
...TORNADO WATCH 147 IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON...
...WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...LAKE WIND ADVISORY IN EFFECT FROM 8 PM TO 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS WITH DAMAGING WIND AND HAIL COULD OCCUR THIS
MORNING AND EARLY THIS AFTERNOON. IT WILL BE WINDY TODAY
WITH WEST WINDS 30 TO 40 MPH.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE TORNADO WATCH...WIND
ADVISORY...AND LAKE WIND ADVISORY THAT ARE IN EFFECT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A LAKE WIND ADVISORY WILL LIKELY BE NEEDED MONDAY.

.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Apr 15, 10:54 AM EDT, 4 hours 54 minutes before

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Local storm report, Apr 15, 1:58 PM EDT, 1 hour 50 minutes before

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Local storm report, Apr 15, 2:58 PM EDT, 50 minutes before

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Local storm report, Apr 15, 3:39 PM EDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 8:13 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	32 min
Apr 14, 8:34 PM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	26 min
Apr 14, 9:04 PM EDT	Severe Thunderstorm Warning	CAE	Newberry	26 min
Apr 15, 3:21 AM EDT	Severe Thunderstorm Warning	CAE	Barnwell	39 min
Apr 15, 3:32 AM EDT	Wind Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more	20 hr
Apr 15, 3:53 AM EDT	Severe Thunderstorm Warning	CAE	Barnwell	52 min
Apr 15, 4:30 AM EDT	Severe Thunderstorm Warning	CAE	Bamberg	45 min
Apr 15, 7:49 AM EDT	Tornado Warning	CAE	Bamberg	26 min
Apr 15, 8:10 AM EDT	Tornado Warning	CAE	Bamberg	35 min
Apr 15, 8:16 AM EDT	Tornado Warning	CAE	Sumter	29 min
Apr 15, 8:31 AM EDT	Tornado Warning	CAE	Orangeburg	29 min
Apr 15, 8:42 AM EDT	Tornado Warning	CAE	Lee, Sumter	33 min
Apr 15, 9:08 AM EDT	Tornado Warning	CAE	Orangeburg	37 min
Apr 15, 9:49 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Orangeburg	26 min
Apr 15, 10:07 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon	23 min
Apr 15, 2:47 AM EDT	Tornado Warning	CAE	Burke	43 min

Nearby

Lake Wind Advisories in South Carolina, 2007 Lake Wind Advisories in Georgia, 2007 Every lake wind advisory in 2007

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.