Alert archive / Georgia / Mesoscale Discussions in 2011

Mesoscale Discussion 288

March 26, 20119 counties in Georgia; 5 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2011, 11:10 PM EDT for 9 counties in Georgia; 5 counties in South Carolina. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Mar 26, 2011, 11:10 PM EDT (03:10 UTC)
Expired: Mar 27, 2011, 12:15 AM EDT
In force: 65 min
Issued by: the Storm Prediction Center

Counties Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Jenkins County, GA, Screven County, GA, Tattnall County, GA, Allendale County, SC, Beaufort County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 25 km from the middle of the area, began a volume at 03:12 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

Charleston AFB, SC (KCHS), launched 00:00Z, 3.2 hours before the alert went out and 125 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: 1575 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 249 m²/s²
0-3 km storm-relative helicity: 374 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
Mar 26, 8:47 PM EDT	Tornado Watch	SPC	Baldwin, Ben Hill, Bibb, Bleckley, Butts, Carroll and 61 more	7 hr
Mar 26, 8:55 PM EDT	Mesoscale Discussion	SPC	Banks, Barrow, Bartow, Catoosa, Chattooga, Cherokee and 36 more	95 min
Mar 26, 9:19 PM EDT	Severe Thunderstorm Watch	SPC	Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 39 more	8 hr
Mar 27, 12:21 AM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Butts, Carroll, Chattahoochee and 55 more	54 min
Mar 27, 12:43 AM EDT	Mesoscale Discussion	SPC	Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 38 more	62 min
Mar 27, 3:03 AM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Ben Hill, Bibb, Bleckley and 40 more	57 min
Mar 27, 3:25 AM EDT	Tornado Watch	SPC	Appling, Baldwin, Bibb, Bleckley, Bryan, Bulloch and 46 more	3 hr
Mar 27, 8:33 AM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Bulloch, Burke, Butts and 48 more	117 min
Mar 27, 9:55 AM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 87 more	7 hr
Mar 27, 11:51 AM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 64 more	84 min
Mar 27, 3:49 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 44 more	56 min
Mar 27, 4:27 PM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 38 more	5 hr
Mar 27, 7:24 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 34 more	2 hr

Nearby

Mesoscale Discussions in Georgia, 2011 Mesoscale Discussions in South Carolina, 2011 Every mesoscale discussion 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.