Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

July 21, 2020Walker County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 21, 2020, 1:31 PM EDT for Walker County, Georgia. It was in force for 29 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 21, 2020, 1:31 PM EDT (17:31 UTC)
Expired: Jul 21, 2020, 2:00 PM EDT
In force: 29 min
Issued by: NWS Atlanta, GA
Hail: 0.88 in
Wind: 50

County Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 60 km from the middle of the area, began a volume at 17:35 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, 5.5 hours before the alert went out and 173 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: 503 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -10 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 21, 1:14 PM EDT, 17 minutes earlier.

Area forecast discussion, Jul 21, 1:14 PM EDT, 17 minutes before

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Hazardous weather outlook, Jul 21, 12:03 PM EDT, 1 hour 28 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1203 PM EDT Tue Jul 21 2020

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-221615-
Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa-
Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta-
Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel-
Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene-
Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson-
Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon-
Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray-
Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach-
Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton-
Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs-
Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren-
Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes-
Wilkinson-
1203 PM EDT Tue Jul 21 2020

This Hazardous Weather Outlook is for portions of North and Central Georgia.

.DAY ONE...This Afternoon and Tonight...

Scattered thunderstorms will develop once again this afternoon. A
few strong to potentially severe storms will be possible with
damaging winds, large hail, locally heavy rain, and frequent
cloud to ground lightning being the main threats with any storms
this afternoon and evening. The main focus for storms will be
across the far northern sections.

Heat indices will briefly reach 105 degrees across portions of
Central Georgia this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

Scattered to numerous thunderstorms are expected across the area.
A few storms may be strong to severe with damaging winds,
frequent lightning, hail and locally heavy rainfall.

Heat index values of 100 to 105 degrees can be expected over much of
the area outside of the mountains through Friday.

In the hours before

Special weather statement, Jul 21, 12:50 PM EDT, 41 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
1250 PM EDT Tue Jul 21 2020

GAZ008-211715-
Union GA-
1250 PM EDT Tue Jul 21 2020

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN UNION COUNTY UNTIL 115 PM
EDT...

At 1249 PM EDT...a strong thunderstorm was over Vogel State Park, or
8 miles south of Blairsville. This storm was nearly stationary.

  HAZARD...40 to 50 mph wind...up to penny sized hail...frequent
           cloud to ground lightning and heavy rain.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects. Heavy rain may cause temporary
           street flooding especially in poor drainage areas.

Some locations in the path of this storm include
Owltown, Woods Hole Shelter, Blood Mountain Shelter, Vogel State
Park, Low Gap Shelter and Track Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3487 8387 3478 8382 3477 8383 3474 8382
      3473 8383 3472 8386 3473 8387 3472 8389
      3473 8390 3474 8394 3472 8398 3480 8402
TIME...MOT...LOC 1649Z 249DEG 3KT 3476 8391

HAIL...0.75IN
WIND...50MPH

Special weather statement, Jul 21, 1:00 PM EDT, 31 minutes before

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Local storm report, Jul 21, 1:14 PM EDT, 17 minutes before

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Local storm report, Jul 21, 1:19 PM EDT, 12 minutes before

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Local storm report, Jul 21, 1:29 PM EDT, 2 minutes before

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Special weather statement, Jul 21, 1:31 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
Jul 20, 9:16 PM EDT	Special Weather Statement	FFC	Polk	29 min
Jul 20, 9:45 PM EDT	Special Weather Statement	FFC	Polk	30 min
Jul 20, 10:15 PM EDT	Special Weather Statement	FFC	Polk	15 min
Jul 20, 11:35 PM EDT	Special Weather Statement	FFC	Lumpkin	25 min
Jul 21, 12:07 AM EDT	Special Weather Statement	FFC	Lumpkin	23 min
Jul 21, 12:14 PM EDT	Special Weather Statement	FFC	Union	31 min
Jul 21, 12:50 PM EDT	Special Weather Statement	FFC	Union	25 min
Jul 21, 12:52 PM EDT	Severe Thunderstorm Warning	FFC	Lumpkin, Union	23 min
Jul 21, 1:00 PM EDT	Special Weather Statement	FFC	Lumpkin	30 min
Jul 21, 1:50 PM EDT	Special Weather Statement	FFC	Morgan	25 min
Jul 21, 2:05 PM EDT	Special Weather Statement	FFC	Henry	25 min
Jul 21, 2:23 PM EDT	Special Weather Statement	FFC	Pickens	67 min
Jul 21, 3:00 PM EDT	Special Weather Statement	FFC	Monroe	30 min
Jul 21, 3:02 PM EDT	Special Weather Statement	FFC	Gwinnett	28 min
Jul 21, 3:15 PM EDT	Special Weather Statement	FFC	Wilkes	30 min
Jul 21, 3:17 PM EDT	Severe Thunderstorm Warning	FFC	Wilkes	43 min
Jul 21, 3:20 PM EDT	Special Weather Statement	FFC	Clarke	25 min
Jul 21, 3:22 PM EDT	Special Weather Statement	FFC	Rockdale	23 min
Jul 21, 3:31 PM EDT	Special Weather Statement	FFC	Barrow	29 min
Jul 21, 3:44 PM EDT	Special Weather Statement	FFC	Greene	31 min
Jul 21, 3:58 PM EDT	Special Weather Statement	FFC	Madison	32 min
Jul 21, 4:00 PM EDT	Special Weather Statement	FFC	Murray	30 min
Jul 21, 4:01 PM EDT	Special Weather Statement	FFC	Clayton	29 min
Jul 21, 4:08 PM EDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	52 min
Jul 21, 4:10 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Fulton	27 min
Jul 21, 4:18 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Jackson, Madison	42 min
Jul 21, 4:19 PM EDT	Severe Thunderstorm Warning	FFC	Dooly, Houston, Pulaski	41 min
Jul 21, 4:35 PM EDT	Special Weather Statement	FFC	Carroll	25 min
Jul 21, 4:42 PM EDT	Special Weather Statement	FFC	Cobb	33 min
Jul 21, 4:43 PM EDT	Special Weather Statement	FFC	Fayette	32 min
Jul 21, 6:26 PM EDT	Special Weather Statement	FFC	Chattooga	34 min
Jul 21, 6:46 PM EDT	Special Weather Statement	FFC	Chattooga	29 min
Jul 21, 6:55 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	34 min
Jul 21, 7:08 PM EDT	Special Weather Statement	FFC	Harris	37 min
Jul 21, 7:28 PM EDT	Special Weather Statement	FFC	Walker	32 min
Jul 21, 7:34 PM EDT	Special Weather Statement	FFC	Harris	26 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.