Alert archive / North Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 19, 2017Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 19, 2017, 4:05 PM EDT for Iredell County, North Carolina. It was in force for 25 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 19, 2017, 4:05 PM EDT (20:05 UTC)
Expired
Jul 19, 2017, 4:30 PM EDT
In force
25 min
Issued by
NWS Greenville-Spartanburg, SC

County Iredell County, NC

The radar

The Greer radar (KGSP), 143 km from the middle of the area, began a volume at 20:06 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.1 hours before the alert went out and 326 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, Charleston AFB, SC at 12:00Z on 2017-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1203 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, Charleston AFB, SC at 12:00Z on 2017-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 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
1203 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
707 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Jul 19, 2:37 PM EDT, 1 hour 28 minutes earlier.

Area forecast discussion, Jul 19, 2:37 PM EDT, 1 hour 28 minutes before
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Hazardous weather outlook, Jul 19, 6:29 AM EDT, 9 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
629 AM EDT Wed Jul 19 2017

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-201030-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander-
Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba-
Rowan-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania-
Henderson-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union-
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-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Chester-Greenwood-
629 AM EDT Wed Jul 19 2017

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...Today and Tonight.

Isolated to scattered thunderstorms are expected to develop again
across the area this afternoon and evening. The main threats will be
from cloud to ground lightning and locally heavy rainfall. However,
a few storms could become severe, with damaging winds being the primary
threat.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.
..Tuesday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

JPT

In the hours before

Local storm report, Jul 19, 10:56 AM EDT, 5 hours 9 minutes before
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Local storm report, Jul 19, 11:25 AM EDT, 4 hours 40 minutes before
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Special weather statement, Jul 19, 4:05 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
405 PM EDT WED JUL 19 2017

NCZ036-056-192030-
Iredell NC-Catawba NC-
405 PM EDT WED JUL 19 2017

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN CATAWBA AND WEST
CENTRAL IREDELL COUNTIES UNTIL 430 PM EDT...

At 405 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Statesville, or 4 miles east of Catawba, moving
south at 10 mph.

Locations to be impacted include...
Catawba, Lake Norman State Park, Troutman, Lake Norman, Bandys and
Sherrills Ford.

Wind gusts up to 40 mph and pea size hail will be possible in these
areas.

LAT...LON 3576 8109 3579 8094 3565 8086 3561 8108
TIME...MOT...LOC 2005Z 351DEG 7KT 3573 8100

CDG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 8:07 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Union38 min
Jul 18, 8:27 PM EDTSpecial Weather StatementGSPMecklenburg33 min
Jul 18, 8:38 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg37 min
Jul 18, 8:55 PM EDTSpecial Weather StatementGSPUnion35 min
Jul 18, 9:09 PM EDTSevere Thunderstorm WarningGSPGaston, Lincoln51 min
Jul 18, 9:23 PM EDTAreal Flood AdvisoryGSPMecklenburg112 min
Jul 18, 9:23 PM EDTSpecial Weather StatementGSPLincoln37 min
Jul 18, 9:58 PM EDTSpecial Weather StatementGSPLincoln32 min
Jul 18, 10:09 PM EDTSpecial Weather StatementGSPCleveland36 min
Jul 18, 10:22 PM EDTSpecial Weather StatementGSPCleveland23 min
Jul 19, 5:50 PM EDTSpecial Weather StatementGSPMecklenburg25 min
Jul 18, 8:50 PM EDTSpecial Weather StatementGSPAnderson25 min
Jul 18, 9:04 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville41 min
Jul 18, 10:33 PM EDTSpecial Weather StatementGSPYork27 min
Jul 18, 10:43 PM EDTSpecial Weather StatementGSPCherokee32 min
Jul 18, 11:18 PM EDTSpecial Weather StatementGSPCherokee27 min
Jul 18, 11:53 PM EDTSpecial Weather StatementGSPSpartanburg52 min
Jul 19, 12:48 AM EDTSpecial Weather StatementGSPLaurens27 min
Jul 19, 5:09 PM EDTSpecial Weather StatementGSPOconee36 min
Jul 19, 6:16 PM EDTSpecial Weather StatementGSPChester29 min
Jul 19, 6:22 PM EDTSevere Thunderstorm WarningGSPChester, York68 min
Jul 19, 6:27 PM EDTSpecial Weather StatementGSPCherokee33 min
Jul 19, 7:27 PM EDTSpecial Weather StatementGSPChester48 min
Jul 19, 6:26 PM EDTSpecial Weather StatementGSPStephens34 min
Jul 19, 7:00 PM EDTSevere Thunderstorm WarningGSPHabersham, Stephens32 min
Jul 19, 7:06 PM EDTAreal Flood AdvisoryGSPStephens114 min

Nearby

Special Weather Statements in North Carolina, 2017Every special weather statement in 2017

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.