Alert archive / North Carolina / Areal Flood Warnings in 2018

Areal Flood Warning 13, NWS Greenville-Spartanburg, SC

May 18, 2018Henderson County, Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this areal flood warning at May 18, 2018, 3:05 AM EDT for Henderson County, Transylvania County, North Carolina. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 18, 2018, 3:05 AM EDT (07:05 UTC)
Expired: May 18, 2018, 3:00 PM EDT
In force: 12 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

Counties Henderson County, NC, Transylvania County, NC

The radar

The Greer radar (KGSP), 57 km from the middle of the area, began a volume at 07:06 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 7.1 hours before the alert went out and 263 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: 177 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 872 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at May 18, 2:11 AM EDT, 54 minutes earlier.

Area forecast discussion, May 18, 2:11 AM EDT, 54 minutes before

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Hazardous weather outlook, May 17, 10:55 PM EDT, 4 hours 10 minutes before

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In the hours before

Special weather statement, May 17, 9:53 PM EDT, 5 hours 12 minutes before

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Local storm report, May 17, 10:20 PM EDT, 4 hours 45 minutes before

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Local storm report, May 17, 10:32 PM EDT, 4 hours 33 minutes before

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Local storm report, May 17, 11:33 PM EDT, 3 hours 32 minutes before

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Special weather statement, May 17, 11:51 PM EDT, 3 hours 14 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
May 17, 8:21 PM EDT	Special Weather Statement	GSP	Henderson, Transylvania	24 min
May 17, 8:52 PM EDT	Flash Flood Warning	GSP	McDowell	3 hr
May 17, 9:02 PM EDT	Areal Flood Advisory	GSP	Buncombe, Henderson, Transylvania	118 min
May 17, 9:20 PM EDT	Flash Flood Warning	GSP	Buncombe	99 min
May 17, 9:37 PM EDT	Flash Flood Warning	GSP	Henderson, Transylvania	4 hr
May 17, 9:53 PM EDT	Special Weather Statement	GSP	Buncombe	52 min
May 17, 10:02 PM EDT	Areal Flood Advisory	GSP	Avery, Burke, Caldwell	3 hr
May 17, 10:08 PM EDT	Areal Flood Advisory	GSP	Buncombe, Haywood, Yancey	3 hr
May 17, 10:32 PM EDT	Areal Flood Advisory	GSP	Jackson, Macon, Transylvania	3 hr
May 17, 11:51 PM EDT	Special Weather Statement	GSP	Graham, Madison, Swain	84 min
May 18, 1:38 AM EDT	Areal Flood Advisory	GSP	Henderson, Transylvania	6 hr
May 18, 5:05 AM EDT	Areal Flood Advisory	GSP	Jackson, Macon	6 hr
May 18, 7:53 AM EDT	River Flood Warning	GSP	Buncombe, Henderson	61 hr
May 18, 8:14 AM EDT	River Flood Advisory	GSP	Buncombe	28 hr
May 18, 9:46 AM EDT	Areal Flood Advisory	GSP	Iredell	6 hr
May 18, 10:08 AM EDT	Areal Flood Advisory	GSP	Burke, Rutherford	5 hr
May 18, 10:09 AM EDT	Special Weather Statement	GSP	Catawba	51 min
May 18, 10:31 AM EDT	Areal Flood Advisory	GSP	Avery, Caldwell	4 hr
May 18, 10:37 AM EDT	Areal Flood Advisory	GSP	Catawba	3 hr
May 18, 11:07 AM EDT	Special Weather Statement	GSP	Alexander, Catawba, Lincoln	53 min
May 18, 11:17 AM EDT	Special Weather Statement	GSP	Caldwell	58 min
May 18, 2:48 PM EDT	Areal Flood Warning	GSP	Transylvania	19 hr
May 18, 3:06 PM EDT	Areal Flood Advisory	GSP	Avery, Burke, Caldwell	5 hr
May 18, 3:44 PM EDT	Areal Flood Advisory	GSP	Davie, Iredell	3 hr
May 18, 3:50 PM EDT	Flash Flood Warning	GSP	Avery, Caldwell	7 hr
May 18, 4:13 PM EDT	Special Weather Statement	GSP	Rutherford	32 min
May 18, 4:29 PM EDT	Flash Flood Warning	GSP	Burke, McDowell	4 hr
May 18, 4:42 PM EDT	Flash Flood Warning	GSP	Davie	3 hr
May 18, 4:49 PM EDT	Areal Flood Advisory	GSP	Rutherford	116 min
May 18, 5:38 PM EDT	Flash Flood Warning	GSP	Rutherford	6 hr
May 18, 6:28 PM EDT	Areal Flood Advisory	GSP	Polk, Rutherford	2 hr
May 18, 7:16 PM EDT	Flash Flood Warning	GSP	Polk, Rutherford	3 hr
May 18, 4:49 PM EDT	Special Weather Statement	GSP	Abbeville	41 min
May 18, 5:14 PM EDT	Special Weather Statement	GSP	Abbeville	31 min
May 18, 6:23 PM EDT	Special Weather Statement	GSP	Greenwood	37 min
May 18, 6:41 PM EDT	Special Weather Statement	GSP	Oconee	49 min
May 18, 6:51 PM EDT	Special Weather Statement	GSP	Greenwood	39 min
May 18, 7:10 PM EDT	Areal Flood Advisory	GSP	Greenwood, Laurens	2 hr
May 18, 5:56 PM EDT	Special Weather Statement	GSP	Elbert, Franklin, Hart	49 min

Nearby

Areal Flood Warnings in North Carolina, 2018 Every areal flood warning 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.