Alert archive / North Carolina / Flash Flood Watches in 2019

Flash Flood Watch 2, NWS Greenville-Spartanburg, SC

July 22, 201916 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood watch at Jul 22, 2019, 4:03 AM EDT for 16 counties in North Carolina. It took effect at Jul 22, 2019, 8:00 AM EDT. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued: Jul 22, 2019, 4:03 AM EDT (08:03 UTC)
In effect from: Jul 22, 2019, 8:00 AM EDT
Expired: Jul 23, 2019, 12:00 PM EDT
In force: 28 hr
Issued by: NWS Greenville-Spartanburg, SC
Flood severity: None

Counties Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Davie County, NC, Graham County, NC, Haywood County, NC, Iredell County, NC, Jackson County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 96 km from the middle of the area, began a volume at 08:05 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

Roanoke, VA (KRNK), launched 00:00Z, 8.1 hours before the alert went out and 286 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: 463 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1299 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 22 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 flash flood watch 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 flash flood watch went out at Jul 22, 3:50 AM EDT, 13 minutes earlier.

Area forecast discussion, Jul 22, 3:50 AM EDT, 13 minutes before

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Hazardous weather outlook, Jul 21, 9:04 PM EDT, 6 hours 59 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 22, 2:14 PM EDT	Special Weather Statement	GSP	Buncombe	46 min
Jul 22, 2:31 PM EDT	Special Weather Statement	GSP	Jackson, Transylvania	44 min
Jul 22, 3:01 PM EDT	Special Weather Statement	GSP	Buncombe	29 min
Jul 22, 3:26 PM EDT	Special Weather Statement	GSP	Avery	19 min
Jul 22, 3:30 PM EDT	Special Weather Statement	GSP	Polk	15 min
Jul 22, 3:47 PM EDT	Special Weather Statement	GSP	Mecklenburg	13 min
Jul 22, 3:49 PM EDT	Special Weather Statement	GSP	Avery	26 min
Jul 22, 3:53 PM EDT	Special Weather Statement	GSP	McDowell	37 min
Jul 22, 3:58 PM EDT	Special Weather Statement	GSP	Caldwell	17 min
Jul 22, 4:17 PM EDT	Special Weather Statement	GSP	Avery	28 min
Jul 22, 4:21 PM EDT	Special Weather Statement	GSP	Rowan	24 min
Jul 22, 4:30 PM EDT	Special Weather Statement	GSP	Avery	15 min
Jul 22, 4:59 PM EDT	Special Weather Statement	GSP	Burke	31 min
Jul 22, 5:27 PM EDT	Special Weather Statement	GSP	Catawba	33 min
Jul 22, 5:39 PM EDT	Special Weather Statement	GSP	Iredell	36 min
Jul 22, 5:44 PM EDT	Special Weather Statement	GSP	Alexander	31 min
Jul 22, 6:12 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Davie, Iredell, Rowan	68 min
Jul 22, 6:15 PM EDT	Special Weather Statement	GSP	Lincoln	30 min
Jul 22, 6:47 PM EDT	Special Weather Statement	GSP	Lincoln	28 min
Jul 22, 7:12 PM EDT	Special Weather Statement	GSP	Transylvania	18 min
Jul 22, 7:43 PM EDT	Special Weather Statement	GSP	Davie	32 min
Jul 22, 2:46 PM EDT	Special Weather Statement	GSP	Pickens	29 min
Jul 22, 3:20 PM EDT	Special Weather Statement	GSP	Laurens	25 min
Jul 22, 3:23 PM EDT	Special Weather Statement	GSP	Union	22 min
Jul 22, 5:31 PM EDT	Special Weather Statement	GSP	Abbeville	29 min
Jul 22, 6:00 PM EDT	Special Weather Statement	GSP	Laurens	30 min
Jul 22, 6:31 PM EDT	Special Weather Statement	GSP	Abbeville	29 min
Jul 22, 6:58 PM EDT	Special Weather Statement	GSP	Union	17 min
Jul 22, 7:05 PM EDT	Special Weather Statement	GSP	Union	25 min
Jul 22, 7:15 PM EDT	Special Weather Statement	GSP	Union	30 min
Jul 22, 7:35 PM EDT	Special Weather Statement	GSP	Cherokee	25 min

Nearby

Flash Flood Watches in North Carolina, 2019 Every flash flood watch in 2019

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.