Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Greenville-Spartanburg, SC

March 23, 2011Madison County, Yancey County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Mar 23, 2011, 5:29 PM EDT for Madison County, Yancey County, North Carolina. It was in force for 46 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: Mar 23, 2011, 5:29 PM EDT (21:29 UTC)
Expired: Mar 23, 2011, 6:15 PM EDT
In force: 46 min
Issued by: NWS Greenville-Spartanburg, SC

Counties Madison County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 95 km from the middle of the area, began a volume at 21:29 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, 9.5 hours before the alert went out and 225 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: 1642 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Mar 23, 3:58 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, Mar 23, 3:58 PM EDT, 1 hour 31 minutes before

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Hazardous weather outlook, Mar 23, 3:28 PM EDT, 2 hours 1 minute before

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In the hours before

Special weather statement, Mar 23, 5:29 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
529 PM EDT WED MAR 23 2011

NCZ048-049-232215-
MADISON-YANCEY-
529 PM EDT WED MAR 23 2011

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL MADISON AND YANCEY
COUNTIES THROUGH 615 PM EDT...

AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTH OF WHITEROCK...OR 7 MILES NORTH OF
MARSHALL...MOVING EAST AT 25 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  WHITEROCK...WALNUT...SWISS...RAMSEYTOWN...MICAVILLE...MARS HILL...
  FAUST...CELO...BUSICK...BURNSVILLE AND ALLENSTAND.

SMALL HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3598 8224 3600 8220 3599 8219 3594 8219
      3593 8217 3576 8218 3578 8234 3580 8234
      3582 8237 3579 8251 3581 8279 3599 8278
      3600 8260 3596 8259 3597 8255 3600 8248
      3601 8228

07

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 2:45 AM EDT	Lake Wind Advisory	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 22 more	24 hr
Mar 23, 2:54 AM EDT	Red Flag Warning	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 22 more	17 hr

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.