Alert archive / North Carolina / Red Flag Warnings in 2009

Red Flag Warning 12, NWS Greenville-Spartanburg, SC

April 22, 20096 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this red flag warning at Apr 22, 2009, 10:16 AM EDT for 6 counties in North Carolina. It was in force for 10 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: Apr 22, 2009, 10:16 AM EDT (14:16 UTC)
Expired: Apr 22, 2009, 8:00 PM EDT
In force: 10 hr
Issued by: NWS Greenville-Spartanburg, SC

Counties Alexander County, NC, Cabarrus County, NC, Catawba County, NC, Davie County, NC, Iredell County, NC, Rowan County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 2.3 hours before the alert went out and 91 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1563 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -48 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 red flag 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 red flag warning went out at Apr 22, 10:13 AM EDT, 3 minutes earlier.

Area forecast discussion, Apr 22, 10:13 AM EDT, 3 minutes before

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Hazardous weather outlook, Apr 22, 5:49 AM EDT, 4 hours 27 minutes before

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In the hours before

Special weather statement, Apr 22, 9:50 AM EDT, 26 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
Apr 21, 10:12 PM EDT	Freeze Warning	GSP	Avery, Mitchell, Yancey	12 hr
Apr 22, 10:01 AM EDT	Lake Wind Advisory	GSP	Alexander, Avery, Burke, Cabarrus, Caldwell, Catawba and 9 more	8 hr

Nearby

Red Flag Warnings in North Carolina, 2009 Every red flag warning in 2009

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.