Alert archive / Georgia / Mesoscale Discussions in 2008

Mesoscale Discussion 960

May 21, 200816 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 21, 2008, 12:09 AM EDT for 16 counties in Georgia. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: May 21, 2008, 12:09 AM EDT (04:09 UTC)
Expired: May 21, 2008, 1:15 AM EDT
In force: 66 min
Issued by: the Storm Prediction Center

Counties Appling County, GA, Ben Hill County, GA, Bryan County, GA, Crisp County, GA, Evans County, GA, Jeff Davis County, GA, Liberty County, GA, Long County, GA, Montgomery County, GA, Sumter County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Turner County, GA, Wheeler County, GA, Wilcox County, GA

The radar

The Robins AFB radar (KJGX), 92 km from the middle of the area, began a volume at 04:09 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

Jacksonville, FL (KJAX), launched 00:00Z, 4.2 hours before the alert went out and 196 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: 1989 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 142 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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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 9:05 PM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Burke, Crawford, Dodge and 22 more	55 min
May 20, 9:42 PM EDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Bryan, Bulloch, Candler and 38 more	4 hr
May 21, 2:04 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 35 more	86 min
May 21, 2:26 PM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 35 more	8 hr
May 21, 5:50 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Berrien, Brantley and 25 more	55 min

Nearby

Mesoscale Discussions in Georgia, 2008 Every mesoscale discussion in 2008

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.