Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

October 7, 2021Habersham County, Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this special weather statement at Oct 7, 2021, 3:38 AM EDT for Habersham County, Rabun County, Georgia. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 7, 2021, 3:38 AM EDT (07:38 UTC)
Expired: Oct 7, 2021, 4:15 AM EDT
In force: 37 min
Issued by: NWS Greenville-Spartanburg, SC

Counties Habersham County, GA, Rabun County, GA

The radar

The Greer radar (KGSP), 122 km from the middle of the area, began a volume at 07:42 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.6 hours before the alert went out and 188 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: 574 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Oct 6, 10:49 PM EDT, 4 hours 49 minutes earlier.

Area forecast discussion, Oct 6, 10:49 PM EDT, 4 hours 49 minutes before

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Hazardous weather outlook, Oct 6, 4:51 PM EDT, 10 hours 47 minutes before

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In the hours before

Special weather statement, Oct 7, 3:38 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
338 AM EDT Thu Oct 7 2021

GAZ010-017-018-NCZ062>064-SCZ001-070815-
Rabun GA-Stephens GA-Habersham GA-Transylvania NC-
Southern Jackson NC-Macon NC-Oconee Mountains SC-
338 AM EDT Thu Oct 7 2021

...THUNDERSTORMS WITH HEAVY RAINFALL WILL IMPACT NORTHWESTERN
STEPHENS...HABERSHAM...RABUN...SOUTHEASTERN MACON...SOUTHWESTERN
TRANSYLVANIA...SOUTH CENTRAL JACKSON AND NORTHWESTERN OCONEE COUNTIES
UNTIL 415 AM EDT...

At 332 AM EDT, Doppler radar indicated numerous rain showers and
scattered thunderstorm producing heavy rainfall across northeast
Georgia, extreme northwest South Carolina, and extreme southwest
North Carolina.

Locations to be impacted include...
Clayton, Clarkesville, Demorest, Mount Airy, Highlands, Mountain
City, Tiger, Dillard, Sky Valley and Tallulah Falls.

Heavy rainfall rates of 1 to 2 inches per hour are expected in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

As additional heavy showers and storms continue to develop over
these areas through the morning, the potential for flash flooding
will steadily increase. Stay tuned to local media outlets or NOAA
Weather Radio for later statements, advisories, or potential
warnings.

&&

LAT...LON 3473 8362 3476 8363 3478 8366 3489 8364
      3491 8363 3492 8360 3494 8360 3495 8355
      3499 8355 3500 8348 3500 8352 3502 8352
      3504 8356 3510 8359 3512 8359 3508 8293
      3451 8347 3455 8362 3462 8364 3465 8366
TIME...MOT...LOC 0732Z 204DEG 10KT 3471 8351

LANE

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 7, 12:20 AM EDT	Areal Flood Advisory	GSP	Avery, Caldwell	2 hr
Oct 7, 6:40 AM EDT	Areal Flood Advisory	GSP	Buncombe, Haywood, Henderson, Transylvania	3 hr
Oct 7, 6:59 AM EDT	Areal Flood Advisory	GSP	Transylvania	5 hr
Oct 7, 7:08 AM EDT	Areal Flood Advisory	GSP	Jackson, Macon, Transylvania	3 hr
Oct 7, 7:34 AM EDT	Flash Flood Warning	GSP	Buncombe, McDowell, Rutherford	7 hr
Oct 7, 8:10 AM EDT	Flash Flood Warning	GSP	Henderson, Rutherford	3 hr
Oct 7, 9:05 AM EDT	Special Weather Statement	GSP	Burke	55 min
Oct 7, 9:25 AM EDT	Flash Flood Warning Considerable damage threat	GSP	Burke, McDowell	5 hr
Oct 7, 9:41 AM EDT	River Flood Advisory	GSP	Buncombe, Henderson	3 days
Oct 7, 9:41 AM EDT	River Flood Advisory	GSP	Buncombe	17 hr
Oct 7, 9:46 AM EDT	River Flood Warning	GSP	Henderson, Transylvania	68 hr
Oct 7, 10:53 AM EDT	Areal Flood Advisory	GSP	Transylvania	6 hr
Oct 7, 11:03 AM EDT	Flash Flood Warning	GSP	Burke	6 hr
Oct 7, 11:19 AM EDT	Areal Flood Warning	GSP	Henderson, Rutherford	6 hr
Oct 7, 11:49 AM EDT	Areal Flood Advisory	GSP	Henderson, Polk	8 hr
Oct 7, 1:02 PM EDT	Areal Flood Advisory	GSP	Macon, Swain	8 hr
Oct 7, 2:01 PM EDT	Areal Flood Warning	GSP	Burke, McDowell	4 hr
Oct 7, 5:47 AM EDT	Special Weather Statement	GSP	Greenville	43 min
Oct 7, 6:16 AM EDT	Flash Flood Warning	GSP	Anderson	3 hr
Oct 7, 7:45 AM EDT	Areal Flood Advisory	GSP	Abbeville	3 hr
Oct 7, 8:59 AM EDT	Flash Flood Warning	GSP	Abbeville	3 hr
Oct 7, 9:16 AM EDT	Areal Flood Warning	GSP	Anderson	7 hr
Oct 7, 9:42 AM EDT	Special Weather Statement	GSP	Greenwood	63 min
Oct 7, 10:21 AM EDT	Flash Flood Warning	GSP	Greenwood	4 hr
Oct 7, 12:03 PM EDT	Areal Flood Warning	GSP	Abbeville	6 hr
Oct 7, 4:21 AM EDT	Areal Flood Advisory	GSP	Habersham, Rabun	2 hr
Oct 7, 4:45 AM EDT	Areal Flood Advisory	GSP	Elbert, Hart	3 hr
Oct 7, 6:12 AM EDT	Flash Flood Warning	GSP	Elbert, Hart	3 hr
Oct 7, 6:26 AM EDT	Areal Flood Advisory	GSP	Habersham, Rabun	4 hr
Oct 7, 8:26 AM EDT	Areal Flood Warning	GSP	Rabun	6 hr
Oct 7, 9:11 AM EDT	Areal Flood Warning	GSP	Elbert, Hart	35 hr
Oct 7, 10:39 AM EDT	Areal Flood Warning	GSP	Habersham	7 hr
Oct 7, 4:30 PM EDT	Areal Flood Advisory	GSP	Hart	3 hr

Nearby

Special Weather Statements in Georgia, 2021 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.