Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

August 5, 2017Hancock County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 5, 2017, 7:33 PM EDT for Hancock County, Georgia. It was in force for 42 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: Aug 5, 2017, 7:33 PM EDT (23:33 UTC)
Expired: Aug 5, 2017, 8:15 PM EDT
In force: 42 min
Issued by: NWS Atlanta, GA

County Hancock County, GA

The radar

The Robins AFB radar (KJGX), 58 km from the middle of the area, began a volume at 23:37 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 12:00Z, 11.6 hours before the alert went out and 289 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: 340 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

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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 Aug 5, 3:29 PM EDT, 4 hours 4 minutes earlier.

Area forecast discussion, Aug 5, 3:29 PM EDT, 4 hours 4 minutes before

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Hazardous weather outlook, Aug 5, 11:46 AM EDT, 7 hours 47 minutes before

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In the hours before

Special weather statement, Aug 5, 7:33 PM EDT, 0 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
Aug 4, 8:22 PM EDT	Special Weather Statement	FFC	Bibb	53 min
Aug 4, 8:23 PM EDT	Special Weather Statement	FFC	Talbot	67 min
Aug 4, 8:27 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker, Whitfield	48 min
Aug 4, 8:37 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Twiggs, Wilkinson	38 min
Aug 4, 8:40 PM EDT	Flash Flood Warning	FFC	Bibb	6 hr
Aug 4, 8:42 PM EDT	Special Weather Statement	FFC	Jackson	48 min
Aug 4, 8:53 PM EDT	Tornado Warning	FFC	Wilkinson	52 min
Aug 4, 8:59 PM EDT	Special Weather Statement	FFC	Towns, Union	46 min
Aug 4, 9:36 PM EDT	Special Weather Statement	FFC	Washington	39 min
Aug 4, 9:42 PM EDT	Special Weather Statement	FFC	Barrow, Jackson	48 min
Aug 4, 9:57 PM EDT	Special Weather Statement	FFC	Whitfield	48 min
Aug 5, 12:46 AM EDT	Special Weather Statement	FFC	Coweta, Fayette	44 min

Nearby

Special Weather Statements in Georgia, 2017 Every special weather statement in 2017

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.