Alert archive / North Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Greenville-Spartanburg, SC

May 19, 2018Yancey County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at May 19, 2018, 4:11 PM EDT for Yancey 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
May 19, 2018, 4:11 PM EDT (20:11 UTC)
Expired
May 19, 2018, 4:45 PM EDT
In force
34 min
Issued by
NWS Greenville-Spartanburg, SC

County Yancey County, NC

The radar

The Knoxville radar (KMRX), 90 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 232 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 2018-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 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 2018-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.19395878Sfc1 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
172 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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 May 19, 2:57 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, May 19, 2:57 PM EDT, 1 hour 14 minutes before
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Hazardous weather outlook, May 19, 8:30 AM EDT, 7 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
830 AM EDT Sat May 19 2018

GAZ010-017-018-026-028-029-NCZ035>037-048-051-052-056>059-062-063-
068>072-082-SCZ001-004>014-019-201230-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell-
Davie-Madison-Swain-Haywood-Catawba-Rowan-Graham-Northern Jackson-
Macon-Southern Jackson-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-
Union-Oconee Mountains-Greater Oconee-Greater Pickens-
Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville-
Laurens-Chester-Greenwood-
830 AM EDT Sat May 19 2018

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

.DAY ONE...Today and Tonight.

Thunderstorms are possible this afternoon that are not expected to
be severe, but brief heavy rain, small hail, and lightning will be
possible. Gusty winds from thunderstorms could blow down a few trees
due to saturated soils.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

..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.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ033-049-050-053-064-065-501>510-SCZ002-003-201230-
Avery-Yancey-Mitchell-Buncombe-Transylvania-Henderson-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-Pickens Mountains-
Greenville Mountains-
830 AM EDT Sat May 19 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

This Hazardous Weather Outlook is for western North Carolina and
upstate South Carolina.

.DAY ONE...Today 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.

Thunderstorms are possible this afternoon that are not expected to be
severe, but brief heavy rain, small hail, and lightning will be
possible. Gusty winds from thunderstorms could blow down a few trees
due to saturated soils.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

..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.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

ARK

In the hours before

Local storm report, May 19, 11:53 AM EDT, 4 hours 18 minutes before
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Local storm report, May 19, 12:42 PM EDT, 3 hours 29 minutes before
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Local storm report, May 19, 2:30 PM EDT, 1 hour 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
230 PM EDT SAT MAY 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0100 AM     FLASH FLOOD      GLENWOOD                35.61N 81.98W
05/19/2018                   MCDOWELL           NC   EMERGENCY MNGR

            EMERGENCY MANAGER REPORTS FLOODING CONDITIONS ALONG THE
            SECOND BROAD RIVER SOUTH OF GLENWOOD WHERE THREE
            CAMPGROUNDS WERE EVACUATED OVERNIGHT. SEVERAL DRIVEWAYS
            HAVE BEEN REPORTED WASHED AWAY BY HIGH WATER AROUND
            GLENWOOD.

&&

SKRENTZ
Special weather statement, May 19, 3:37 PM EDT, 34 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
337 PM EDT SAT MAY 19 2018

GAZ010-017-018-SCZ001-004-192015-
Rabun GA-Stephens GA-Habersham GA-Greater Oconee SC-
Oconee Mountains SC-
337 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN STEPHENS...NORTHEASTERN
HABERSHAM...SOUTH CENTRAL RABUN AND OCONEE COUNTIES UNTIL 415 PM
EDT...

At 334 PM EDT, Doppler radar was tracking a series of heavy rain
producing showers and embedded thunderstorms moving repeatedly over
the area from Turnerville to Walhalla. These showers were producing
rainfall at rates of one-half to one inch per hour and additional
heavy rainfall is likely through 415 PM.

Locations to be impacted include...
Seneca, Walhalla, Toccoa, Westminster, Tallulah Falls, Salem,
Tallulah Gorge State Park, Oconee State Park, Lake Keowee and Long
Creek.

Deep ponding of water will develop in low-lying and poor drainage
areas. Streams may rise to near bankfull.

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 3474 8343 3494 8297 3476 8289 3474 8290
      3474 8288 3467 8285 3458 8320 3458 8341
TIME...MOT...LOC 1934Z 246DEG 14KT 3471 8321

HG
Special weather statement, May 19, 3:51 PM EDT, 20 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
351 PM EDT SAT MAY 19 2018

NCZ048-192015-
Madison NC-
351 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MADISON COUNTY
UNTIL 415 PM EDT...

At 351 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Marshall, or 5 miles north of Mars Hill, moving
east at 15 mph.

Locations to be impacted include...
Mars Hill, Wolf Ridge and Faust.

Wind gusts up to 35 mph, half inch hail, and very heavy rainfall
rates up to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

LAT...LON 3597 8261 3595 8257 3598 8251 3596 8250
      3595 8248 3593 8250 3591 8249 3591 8248
      3589 8245 3586 8242 3582 8241 3581 8246
      3580 8247 3580 8267 3598 8266 3599 8261
TIME...MOT...LOC 1951Z 261DEG 13KT 3591 8256

HG
Special weather statement, May 19, 4:11 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
411 PM EDT SAT MAY 19 2018

NCZ048-049-192045-
Yancey NC-Madison NC-
411 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MADISON AND WESTERN
YANCEY COUNTIES UNTIL 445 PM EDT...

At 411 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Marshall, or 4 miles north of Mars Hill, moving
east at 10 mph.

Locations to be impacted include...
Mars Hill, Faust, Swiss, Wolf Ridge and Ramseytown.

Wind gusts up to 35 mph, half inch hail and very heavy rainfall
rates of 1 to 2 inches per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

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 3605 8238 3578 8233 3578 8234 3580 8234
      3581 8235 3582 8238 3581 8244 3581 8246
      3580 8247 3580 8252 3579 8255 3579 8263
      3597 8267 3599 8260 3597 8261 3595 8256
      3601 8246 3603 8244
TIME...MOT...LOC 2011Z 260DEG 8KT 3589 8256

HG

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 8:20 PM EDTAreal Flood WarningGSPBurke, McDowell3 hr
May 18, 9:56 PM EDTFlash Flood WarningGSPBuncombe, Henderson, Polk, Rutherford4 hr
May 18, 10:25 PM EDTFlash Flood WarningGSPAvery, Caldwell4 hr
May 18, 11:01 PM EDTAreal Flood AdvisoryGSPBuncombe, Henderson8 hr
May 18, 11:12 PM EDTFlash Flood WarningGSPBurke, McDowell5 hr
May 18, 11:24 PM EDTAreal Flood WarningGSPRutherford3 hr
May 18, 11:32 PM EDTAreal Flood AdvisoryGSPAvery, Buncombe, Madison, Mitchell, Yancey4 hr
May 19, 12:24 AM EDTFlash Flood WarningGSPCaldwell2 hr
May 19, 1:46 AM EDTAreal Flood WarningGSPBuncombe, Henderson, Polk, Rutherford6 hr
May 19, 2:15 AM EDTAreal Flood WarningGSPAvery, Caldwell18 hr
May 19, 4:20 AM EDTAreal Flood WarningGSPBurke, McDowell20 hr
May 19, 8:18 AM EDTAreal Flood WarningGSPBuncombe, Henderson, Polk, Rutherford12 hr
May 19, 8:40 AM EDTAreal Flood AdvisoryGSPAlexander, Burke, Caldwell, Catawba, McDowell12 hr
May 19, 9:43 AM EDTAreal Flood AdvisoryGSPTransylvania2 hr
May 19, 12:11 PM EDTAreal Flood AdvisoryGSPTransylvania6 hr
May 19, 2:45 PM EDTRiver Flood AdvisoryGSPBuncombe21 hr
May 19, 3:45 PM EDTAreal Flood AdvisoryGSPMadison2 hr
May 19, 3:51 PM EDTSpecial Weather StatementGSPMadison24 min
May 19, 7:55 PM EDTAreal Flood WarningGSPPolk, Rutherford2 hr
May 18, 10:09 PM EDTAreal Flood AdvisoryGSPGreenville111 min
May 19, 3:37 PM EDTSpecial Weather StatementGSPOconee38 min
May 19, 4:03 PM EDTAreal Flood AdvisoryGSPOconee117 min
May 19, 2:33 PM EDTAreal Flood AdvisoryGSPHabersham117 min
May 19, 6:21 PM EDTSpecial Weather StatementGSPStephens24 min

Nearby

Special Weather Statements in North Carolina, 2018Every special weather statement in 2018

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.