Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 31, 2021Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 31, 2021, 7:41 PM EDT for Iredell County, North Carolina. It was in force for 34 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
Aug 31, 2021, 7:41 PM EDT (23:41 UTC)
Expired
Aug 31, 2021, 8:15 PM EDT
In force
34 min
Issued by
NWS Greenville-Spartanburg, SC
Hail
0.00 in
Wind
40

County Iredell County, NC

The radar

The Roanoke radar (KFCX), 142 km from the middle of the area, began a volume at 23:43 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.7 hours before the alert went out and 88 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 379 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
379 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1017 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 Aug 31, 7:25 PM EDT, 16 minutes earlier.

Area forecast discussion, Aug 31, 7:25 PM EDT, 16 minutes before
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Hazardous weather outlook, Aug 31, 2:00 PM EDT, 5 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
200 PM EDT Tue Aug 31 2021

NCZ048-051-052-058-059-011800-
Madison-Swain-Haywood-Graham-Northern Jackson-
200 PM EDT Tue Aug 31 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY AFTERNOON...
...WIND ADVISORY IN EFFECT UNTIL 8 AM EDT WEDNESDAY ABOVE
3500 FEET...

This Hazardous Weather Outlook is for the southwest mountains of
western North Carolina.

.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.
   Wind Advisory.

The remnants of tropical cyclone Ida will continue to push into the
region through tonight. Isolated severe thunderstorms with a brief
tornado or two are possible, mainly late this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.
   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

GAZ010-017-018-NCZ053-062>065-501>510-SCZ001>005-011800-
Rabun-Habersham-Stephens-Buncombe-Macon-Southern Jackson-
Transylvania-Henderson-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
Rutherford Mountains-Greater Rutherford-Polk Mountains-Eastern Polk-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-
200 PM EDT Tue Aug 31 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY AFTERNOON...

This Hazardous Weather Outlook is for the mountains of northeast
Georgia, the mountains and foothills of western North Carolina, and
the Upstate South Carolina mountains.

.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.

The remnants of tropical cyclone Ida will continue to push into the
region through tonight. In addition to the flood threat, gusty south
winds at higher elevations this afternoon into tonight could down
isolated to scattered trees or power lines. Isolated severe
thunderstorms with a weak and brief tornado or two are also possible,
mainly late this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

NCZ033-049-050-011800-
Avery-Yancey-Mitchell-
200 PM EDT Tue Aug 31 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY AFTERNOON...
...WIND ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 AM EDT
WEDNESDAY...

This Hazardous Weather Outlook is for the northern mountains of
western North Carolina.

.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.
   Wind Advisory.

The remnants of tropical cyclone Ida will continue to push into the
region through tonight. In addition to the flood and wind threats,
isolated severe thunderstorms with a weak and brief tornado or two
are also possible, mainly this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.
   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

GAZ026-028-029-NCZ035>037-056-057-068>072-082-SCZ006>014-019-011800-
Franklin-Hart-Elbert-Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-
Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-Greater Greenville-
Spartanburg-Cherokee-York-Anderson-Abbeville-Laurens-Union SC-
Chester-Greenwood-
200 PM EDT Tue Aug 31 2021

This Hazardous Weather Outlook is for northeast Georgia, Piedmont
North Carolina,and Upstate South Carolina.

.DAY ONE...This afternoon and tonight.

The remnants of tropical cyclone Ida will continue to push into the
region through tonight. Periods of heavy rain with isolated flooding
and breezy southerly winds will develop this afternoon and continue
into tonight. Isolated severe thunderstorms, with a weak and brief
tornado or two, will be possible, mainly late this afternoon and this
evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The remnants of Ida will depart to the east with periods of heavy
rain and associated isolated flood threat gradually coming to an
end.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

HG

In the hours before

Special weather statement, Aug 31, 6:28 PM EDT, 1 hour 13 minutes before
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Special weather statement, Aug 31, 6:30 PM EDT, 1 hour 11 minutes before
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Local storm report, Aug 31, 6:50 PM EDT, 51 minutes before
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Local storm report, Aug 31, 6:53 PM EDT, 48 minutes before
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Special weather statement, Aug 31, 6:58 PM EDT, 43 minutes before
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Special weather statement, Aug 31, 7:41 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.

IssuedProductOfficeCountiesLasted
Aug 30, 11:15 PM EDTSpecial Weather StatementGSPJackson30 min
Aug 31, 10:16 AM EDTWind AdvisoryGSPAvery, Graham, Haywood, Jackson, Madison, Mitchell and 2 more18 hr
Aug 31, 2:01 PM EDTSpecial Weather StatementGSPGraham, Macon29 min
Aug 31, 2:27 PM EDTSpecial Weather StatementGSPJackson, Macon33 min
Aug 31, 4:30 PM EDTSevere Thunderstorm WarningGSPHenderson, Polk, Rutherford45 min
Aug 31, 4:53 PM EDTSevere Thunderstorm WarningGSPCleveland, Gaston, Lincoln, Rutherford37 min
Aug 31, 5:06 PM EDTSevere Thunderstorm WarningGSPBurke, McDowell, Rutherford39 min
Aug 31, 5:16 PM EDTSpecial Weather StatementGSPGaston29 min
Aug 31, 5:28 PM EDTSevere Thunderstorm WarningGSPBurke, Catawba, Cleveland, Lincoln17 min
Aug 31, 5:33 PM EDTSpecial Weather StatementGSPCatawba, Gaston, Lincoln27 min
Aug 31, 5:41 PM EDTSevere Thunderstorm WarningGSPAlexander, Avery, Burke, Caldwell, Catawba, McDowell and 2 more49 min
Aug 31, 5:51 PM EDTSpecial Weather StatementGSPUnion39 min
Aug 31, 6:05 PM EDTSpecial Weather StatementGSPAlexander, Catawba25 min
Aug 31, 6:28 PM EDTSpecial Weather StatementGSPMecklenburg32 min
Aug 31, 6:30 PM EDTSpecial Weather StatementGSPAlexander30 min
Aug 31, 6:58 PM EDTSpecial Weather StatementGSPRowan32 min
Aug 31, 2:49 PM EDTSpecial Weather StatementGSPAbbeville, Greenwood41 min
Aug 31, 3:01 PM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood, Laurens44 min
Aug 31, 3:27 PM EDTSpecial Weather StatementGSPLaurens48 min
Aug 31, 3:36 PM EDTSpecial Weather StatementGSPPickens24 min
Aug 31, 3:39 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg, Union51 min
Aug 31, 3:45 PM EDTSpecial Weather StatementGSPChester30 min
Aug 31, 4:11 PM EDTSpecial Weather StatementGSPGreenville, Spartanburg34 min
Aug 31, 4:23 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg, Union, York37 min
Aug 31, 6:07 PM EDTSpecial Weather StatementGSPChester38 min
Aug 30, 9:13 PM EDTSpecial Weather StatementGSPRabun32 min
Aug 30, 10:40 PM EDTSpecial Weather StatementGSPRabun35 min
Aug 31, 1:24 PM EDTSpecial Weather StatementGSPFranklin, Habersham, Hart, Stephens36 min

Nearby

Special Weather Statements in North Carolina, 2021Every 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.