Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

March 23, 2012Jefferson County, Georgia

NWS Atlanta, GA issued this special weather statement at Mar 23, 2012, 7:12 PM EDT for Jefferson County, Georgia. It was in force for 33 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, 2012, 7:12 PM EDT (23:12 UTC)
Expired: Mar 23, 2012, 7:45 PM EDT
In force: 33 min
Issued by: NWS Atlanta, GA

County Jefferson County, GA

The radar

The Robins AFB radar (KJGX), 95 km from the middle of the area, began a volume at 23:16 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, 11.2 hours before the alert went out and 193 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: 394 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 71 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 Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Mar 23, 3:16 PM EDT, 3 hours 56 minutes earlier.

Area forecast discussion, Mar 23, 3:16 PM EDT, 3 hours 56 minutes before

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Hazardous weather outlook, Mar 23, 3:09 PM EDT, 4 hours 3 minutes before

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In the hours before

Special weather statement, Mar 23, 3:05 PM EDT, 4 hours 7 minutes before

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Special weather statement, Mar 23, 7:12 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
712 PM EDT FRI MAR 23 2012

GAZ074-076-232345-
712 PM EDT FRI MAR 23 2012

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 50 MPH
WINDS IN WASHINGTON AND JEFFERSON COUNTIES UNTIL 745 PM EDT...

AT 711 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM JUST EAST OF DAVISBORO OR 10 MILES WEST OF
LOUISVILLE...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS OF 50 MPH ARE LIKELY AS THIS STORM MOVES ACROSS WASHINGTON
AND JEFFERSON COUNTIES THROUGH 745 PM EDT. SOME LOCATIONS IN THE PATH
OF THE STORM INCLUDE STAPLETONS CROSSROADS AND LOUISVILLE.

&&

LAT...LON 3317 8243 3315 8234 3303 8231 3294 8256
      3300 8264
TIME...MOT...LOC 2312Z 233DEG 24KT 3300 8255

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 22, 8:44 PM EDT	Special Weather Statement	FFC	Marion	31 min
Mar 22, 9:09 PM EDT	Special Weather Statement	FFC	Cobb	36 min
Mar 22, 9:41 PM EDT	Special Weather Statement	FFC	Cobb	34 min
Mar 23, 3:05 PM EDT	Special Weather Statement	FFC	Gordon	25 min
Mar 23, 7:21 PM EDT	Severe Thunderstorm Warning	FFC	Jefferson	24 min

Nearby

Special Weather Statements in Georgia, 2012 Every special weather statement in 2012

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.