Alert archive / Georgia / Winter Storm Watches in 2010

Winter Storm Watch 2, NWS Atlanta, GA

February 11, 201013 counties in Georgia

NWS Atlanta, GA issued this winter storm watch at Feb 11, 2010, 9:45 AM EST for 13 counties in Georgia. It took effect at Feb 12, 2010, 7:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 11, 2010, 9:45 AM EST (14:45 UTC)
In effect from: Feb 12, 2010, 7:00 AM EST
Expired: Feb 11, 2010, 3:04 PM EST
In force
Issued by: NWS Atlanta, GA

Counties Chattahoochee County, GA, Crisp County, GA, Dooly County, GA, Harris County, GA, Macon County, GA, Marion County, GA, Muscogee County, GA, Schley County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Webster County, GA

The radar

The Robins AFB radar (KJGX), 108 km from the middle of the area, began a volume at 14:49 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, 2.8 hours before the alert went out and 118 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: 1047 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -74 m²/s²
0-3 km storm-relative helicity: 12 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 winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this winter storm watch went out at Feb 11, 5:22 AM EST, 4 hours 23 minutes earlier.

Area forecast discussion, Feb 11, 5:22 AM EST, 4 hours 23 minutes before

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Hazardous weather outlook, Feb 11, 5:13 AM EST, 4 hours 32 minutes before

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In the hours before

Special weather statement, Feb 11, 4:34 AM EST, 5 hours 11 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 11, 3:04 PM EST	Winter Storm Watch	FFC	Baldwin, Banks, Barrow, Bibb, Bleckley, Butts and 55 more	13 hr
Feb 11, 3:04 PM EST	Winter Storm Warning	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 80 more	31 hr

Nearby

Winter Storm Watches in Georgia, 2010 Every winter storm watch in 2010

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.