Alert archive / North Carolina / Freezing Rain Advisories in 2011

Freezing Rain Advisory 4, NWS Greenville-Spartanburg, SC

March 26, 20115 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this freezing rain advisory at Mar 26, 2011, 3:18 PM EDT for 5 counties in North Carolina. It took effect at Mar 27, 2011, 12:00 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Mar 26, 2011, 3:18 PM EDT (19:18 UTC)
In effect from
Mar 27, 2011, 12:00 AM EDT
Expired
Mar 27, 2011, 8:32 AM EDT
In force
9 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Burke County, NC, Caldwell County, NC, McDowell County, NC, Mitchell County, NC

The radar

The Greer radar (KGSP), 117 km from the middle of the area, began a volume at 19:17 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.3 hours before the alert went out and 369 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, Peachtre/Fal Fld, GA at 12:00Z on 2011-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Peachtre/Fal Fld, GA at 12:00Z on 2011-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
736 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
154 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 freezing rain advisory 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 freezing rain advisory went out at Mar 26, 2:57 PM EDT, 21 minutes earlier.

Area forecast discussion, Mar 26, 2:57 PM EDT, 21 minutes before
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Hazardous weather outlook, Mar 26, 4:58 AM EDT, 10 hours 20 minutes before
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Nearby

Freezing Rain Advisories in North Carolina, 2011Every freezing rain advisory 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.