Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

July 29, 2020Upson County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 29, 2020, 8:55 PM EDT for Upson County, Georgia. It was in force for 35 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: Jul 29, 2020, 8:55 PM EDT (00:55 UTC)
Expired: Jul 29, 2020, 9:30 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA

County Upson County, GA

The radar

The Atlanta radar (KFFC), 59 km from the middle of the area, began a volume at 00:57 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

Birmingham, AL (KBMX), launched 00:00Z, 0.9 hours before the alert went out and 222 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: 72 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1005 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 29, 7:20 PM EDT, 1 hour 35 minutes earlier.

Area forecast discussion, Jul 29, 7:20 PM EDT, 1 hour 35 minutes before

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Hazardous weather outlook, Jul 29, 8:18 PM EDT, 37 minutes before

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In the hours before

Special weather statement, Jul 29, 3:27 PM EDT, 5 hours 28 minutes before

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Special weather statement, Jul 29, 4:09 PM EDT, 4 hours 46 minutes before

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Special weather statement, Jul 29, 5:12 PM EDT, 3 hours 43 minutes before

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Special weather statement, Jul 29, 7:10 PM EDT, 1 hour 45 minutes before

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Special weather statement, Jul 29, 8:55 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
855 PM EDT Wed Jul 29 2020

GAZ069-070-079-300130-
Lamar GA-Upson GA-Talbot GA-
855 PM EDT Wed Jul 29 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LAMAR...UPSON AND
NORTHERN TALBOT COUNTIES UNTIL 930 PM EDT...

At 855 PM EDT...thunderstorms were near Lincoln Park, or over
Thomaston...moving east at 20 mph.

  HAZARD...Heavy rain.

  IMPACT...Heavy rain may cause temporary street flooding especially
           in poor drainage areas.

Some locations in the path of this storm include
Thomaston, Woodland, Sunset Village, Lincoln Park, The Rock, Redbone
Crossroads, Sprewell Bluff State Park, Pleasant Hill, Logtown,
Sunnyside, Salem, Hannahs Mill, Big Lazer Creek Wma and Crest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should slow down and be prepared for possible loss of
control due to hydroplaning.

LAT...LON 3285 8458 3285 8457 3288 8451 3291 8451
      3302 8417 3277 8416 3275 8417 3275 8468
TIME...MOT...LOC 0055Z 256DEG 18KT 3287 8435

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 1:40 AM EDT	River Flood Warning	FFC	DeKalb	74 min
Jul 30, 2:18 AM EDT	Special Weather Statement	FFC	Gilmer	57 min

Nearby

Special Weather Statements in Georgia, 2020 Every special weather statement in 2020

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.