Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 16, 2021Graham County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 16, 2021, 11:04 PM EDT for Graham County, North Carolina. It was in force for 26 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: Jul 16, 2021, 11:04 PM EDT (03:04 UTC)
Expired: Jul 16, 2021, 11:30 PM EDT
In force: 26 min
Issued by: NWS Greenville-Spartanburg, SC

County Graham County, NC

The radar

The Knoxville radar (KMRX), 100 km from the middle of the area, began a volume at 03:06 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, 3.1 hours before the alert went out and 230 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: 1533 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1053 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 16, 10:27 PM EDT, 37 minutes earlier.

Area forecast discussion, Jul 16, 10:27 PM EDT, 37 minutes before

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Hazardous weather outlook, Jul 16, 10:30 PM EDT, 34 minutes before

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In the hours before

Special weather statement, Jul 16, 7:33 PM EDT, 3 hours 31 minutes before

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
733 PM EDT Fri Jul 16 2021

NCZ048-170000-
Madison NC-
733 PM EDT Fri Jul 16 2021

...A THUNDERSTORM WITH TORRENTIAL RAINFALL WILL IMPACT SOUTHWESTERN
MADISON COUNTY UNTIL 800 PM EDT...

At 733 PM EDT, Doppler radar was tracking a thunderstorm with
torrential rainfall 9 miles west of Marshall, or 5 miles south of Hot
Springs, moving northeast at 10 mph.

Locations to be impacted include...
Marshall, Hot Springs, Spring Creek, Walnut, Luck and Max Patch.

Wind gusts up to 40 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible 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.

&&

LAT...LON 3595 8285 3592 8282 3593 8280 3594 8280
      3578 8266 3569 8283 3570 8285 3568 8289
      3574 8292 3574 8295 3579 8296 3582 8295
      3584 8292 3587 8292 3588 8290 3593 8292
      3593 8290 3594 8290 3595 8287
TIME...MOT...LOC 2333Z 226DEG 8KT 3581 8285

KRENTZ

Special weather statement, Jul 16, 8:05 PM EDT, 2 hours 59 minutes before

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Local storm report, Jul 16, 8:27 PM EDT, 2 hours 37 minutes before

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Special weather statement, Jul 16, 8:29 PM EDT, 2 hours 35 minutes before

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Special weather statement, Jul 16, 11:04 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:05 PM EDT	Special Weather Statement	GSP	Madison	25 min
Jul 16, 8:29 PM EDT	Special Weather Statement	GSP	Madison	31 min
Jul 17, 1:05 PM EDT	Special Weather Statement	GSP	Alexander	25 min
Jul 17, 1:30 PM EDT	Special Weather Statement	GSP	Alexander	30 min
Jul 17, 1:33 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Catawba, Iredell	42 min
Jul 17, 4:01 PM EDT	Special Weather Statement	GSP	Caldwell	29 min
Jul 17, 4:16 PM EDT	Special Weather Statement	GSP	Buncombe	29 min
Jul 17, 4:19 PM EDT	Special Weather Statement	GSP	Transylvania	26 min
Jul 17, 4:24 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Caldwell	51 min
Jul 17, 4:58 PM EDT	Special Weather Statement	GSP	Buncombe	32 min
Jul 17, 5:01 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe	44 min
Jul 17, 5:06 PM EDT	Special Weather Statement	GSP	Henderson	24 min
Jul 17, 5:36 PM EDT	Special Weather Statement	GSP	McDowell	24 min
Jul 17, 5:56 PM EDT	Special Weather Statement	GSP	Rutherford	34 min
Jul 17, 4:53 PM EDT	Special Weather Statement	GSP	Chester	37 min
Jul 17, 6:41 PM EDT	Special Weather Statement	GSP	Oconee	34 min

Nearby

Special Weather Statements in North Carolina, 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.