Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

August 11, 2020Crawford County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 11, 2020, 6:37 PM EDT for Crawford County, Georgia. It was in force for 38 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 11, 2020, 6:37 PM EDT (22:37 UTC)
Expired: Aug 11, 2020, 7:15 PM EDT
In force: 38 min
Issued by: NWS Atlanta, GA
Hail: 0.25 in
Wind: 40

County Crawford County, GA

The radar

The Robins AFB radar (KJGX), 76 km from the middle of the area, began a volume at 22:38 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, 10.6 hours before the alert went out and 82 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: 138 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 1280 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 80 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 Aug 11, 3:08 PM EDT, 3 hours 29 minutes earlier.

Area forecast discussion, Aug 11, 3:08 PM EDT, 3 hours 29 minutes before

Area Forecast Discussion
National Weather Service Peachtree City GA
308 PM EDT Tue Aug 11 2020

.SHORT TERM /Tonight through Wednesday Night/...

High pressure continues across the CWA this afternoon. Early morning
showers and thunderstorms plus thicker cloud cover have looks to
have hindered early convective development across portions of north
GA. Starting to see some convection pop up outside of the cloud
cover. Do think along and south of Columbus to Macon will see the
best coverage of storms this evening. As usual, few strong to severe
storms will be possible. Strong gusty winds and frequent lightning
strikes will be likely with the stronger storms, with damaging wind
gusts the primary severe weather hazard. Also, locally heavy
rainfall will be possible.

Scattered to numerous showers and thunderstorms will once again be
possible tomorrow afternoon/evening. Do expect a bit more coverage
than today.

Heat index values should remain below critical thresholds.

NListemaa

.LONG TERM /Thursday through Tuesday/...

Only minor adjustments have been made to the extended forecast,
which will be characterized by an upper level longwave trough. As
the period begins, the trough axis is anticipated to be positioned
over the Mississippi River Valley, and will steadily push eastward
towards the Appalachians late in the week and over the weekend.
Moisture advection will continue across the area ahead of the
trough, allowing for humid conditions to continue during this time
as well. The abundant deep moisture and daytime instability will
lead to high precip chances each day, especially in the afternoon
and evening, through the end of the week and into the weekend.
Shortwave disturbances embedded in the upper level flow will aid
shower and thunderstorm activity, as well. The potential will remain
for a few strong to severe thunderstorms each day continuing through
the weekend.

Model discrepancies are still present with respect to when the
trough axis clears the area, with the latest GFS still producing a
faster solution than the ECMWF -- on Sunday night for the former as
opposed to Monday night for the latter. When this occurs, some drier
mid-level air is possible on the back side of the trough, which
would serve to inhibit rain chances. As a result, afternoon PoPs
have been limited to high-end chance to low-end likely during the
early parts of next week to account for this uncertainty. Ample
humidity across north and central Georgia, combined with high
temperatures mainly in the upper 80s to low 90s, will lead to heat
indices in the 100 to 105 range and just outside of advisory
criteria through the weekend.

King

&&

.AVIATION...
18Z Update...
Early morning convection has mostly dissipated. Do expect
convection to fire up again, mainly for the southern terminal
sites this afternoon. Have added a prob group for tomorrow
afternoon. Winds will remain on the west side, but may go light
and vrb overnight. Light fog is possible, mainly across areas
surrounding ATL.

//ATL Confidence...18Z Update...
Med confidence all elements.

NListemaa

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          71  94  72  91 /  20  40  40  70
Atlanta         74  94  73  92 /  20  50  50  70
Blairsville     66  88  67  84 /  20  60  50  80
Cartersville    72  94  72  92 /  20  40  40  70
Columbus        74  96  74  93 /  30  50  50  70
Gainesville     71  92  71  89 /  20  40  40  70
Macon           72  96  73  92 /  30  40  40  70
Rome            72  95  72  93 /  20  30  30  70
Peachtree City  72  94  72  91 /  20  40  40  70
Vidalia         74  94  74  91 /  30  60  50  70

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...NListemaa
LONG TERM....King
AVIATION...NListemaa

Hazardous weather outlook, Aug 11, 10:36 AM EDT, 8 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1036 AM EDT Tue Aug 11 2020

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-121015-
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-
1036 AM EDT Tue Aug 11 2020

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

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

Scattered to numerous thunderstorms are expected over north and
central Georgia this afternoon and evening. A few storms will be
strong to severe with strong to damaging winds, frequent lightning
and locally heavy rainfall.

Heat indices of 100 to 105 can be expected across central and
portions of north Georgia this afternoon. Those outside for
prolonged periods should make sure to take precautions from the
heat.

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

Scattered to occasional thunderstorms are expected Wednesday
through Monday. A few storms will be strong to severe with strong
to damaging winds, frequent lightning and locally heavy rainfall.

Heat indices of 100 to 105 can be expected over portions of north
and central Georgia through Monday. Wednesday will be the hottest
day with spotty heat indices of 105 to 107. Those outside for
prolonged periods should make sure to take precautions from the
heat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested but spotters are encouraged
to submit reports of severe weather through the web by going to
weather.gov/atlanta.  Please relay any information about observed severe
weather to the NWS while following all local, state, and CDC guidelines.

In the hours before

Special weather statement, Aug 11, 5:43 PM EDT, 54 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
543 PM EDT Tue Aug 11 2020

GAZ066-112215-
Troup GA-
543 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN TROUP COUNTY UNTIL
615 PM EDT...

At 543 PM EDT...a strong thunderstorm was near Louise, or 8 miles
northeast of LaGrange...moving south at 15 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
LaGrange, Hogansville, Louise and Mountville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3317 8497 3316 8488 3306 8486 3304 8486
      3302 8493 3304 8499
TIME...MOT...LOC 2143Z 358DEG 11KT 3313 8493

HAIL...0.25IN
WIND...40MPH

Special weather statement, Aug 11, 5:59 PM EDT, 38 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
559 PM EDT Tue Aug 11 2020

GAZ085-097-112245-
Johnson GA-Laurens GA-
559 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR JOHNSON AND NORTHEASTERN LAURENS
COUNTIES UNTIL 645 PM EDT...

At 559 PM EDT...a strong thunderstorm was over Tuckers Crossroad, or
8 miles west of Wrightsville...moving southeast at 20 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Dublin, East Dublin, Lovett, Spann, Tuckers Crossroad, Brewton and
Scott.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3249 8274 3248 8291 3271 8297 3271 8296
      3272 8295 3273 8295 3277 8280 3258 8263
TIME...MOT...LOC 2159Z 336DEG 17KT 3269 8285

HAIL...0.25IN
WIND...40MPH

Special weather statement, Aug 11, 6:00 PM EDT, 37 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
600 PM EDT Tue Aug 11 2020

GAZ066-067-112245-
Troup GA-Meriwether GA-
600 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN TROUP AND SOUTHWESTERN
MERIWETHER COUNTIES UNTIL 645 PM EDT...

At 600 PM EDT...a strong thunderstorm was over Odessadale, or 7 miles
west of Greenville. This storm was nearly stationary.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Greenville, Stovall, Harris City, Odessadale, Raleigh and Mountville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3306 8490 3309 8466 3293 8462 3291 8490
TIME...MOT...LOC 2200Z 346DEG 4KT 3303 8484

HAIL...0.25IN
WIND...40MPH

Special weather statement, Aug 11, 6:09 PM EDT, 28 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
609 PM EDT Tue Aug 11 2020

GAZ090>092-102-103-112245-
Schley GA-Chattahoochee GA-Stewart GA-Marion GA-Webster GA-
609 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SCHLEY...
SOUTHEASTERN CHATTAHOOCHEE...STEWART...SOUTHERN MARION AND NORTHERN
WEBSTER COUNTIES UNTIL 645 PM EDT...

At 609 PM EDT...a strong thunderstorm was over Seminole, or 9 miles
northwest of Preston...moving south at 10 mph.

  HAZARD...Up to 40 mph wind...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
Lumpkin, Buena Vista, Richland, Putnam, Brantley, Seminole, Charles,
Florence Marina State Park, Westville, Brooklyn, Renfroe, Draneville,
Manta, Zellobee, Sanford, Doyle, Church Hill, Louvale, Walls Crossing
and Providence Canyon State Park.

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 3194 8495 3195 8496 3198 8496 3198 8502
      3197 8504 3199 8504 3199 8507 3202 8505
      3211 8505 3242 8450 3220 8432 3217 8439
      3217 8443 3215 8443 3192 8488 3192 8491
TIME...MOT...LOC 2209Z 013DEG 9KT 3219 8460

WIND...40MPH

Special weather statement, Aug 11, 6:33 PM EDT, 4 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
633 PM EDT Tue Aug 11 2020

GAZ073-084-112300-
Wilkinson GA-Baldwin GA-
633 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WILKINSON AND
SOUTHWESTERN BALDWIN COUNTIES UNTIL 700 PM EDT...

At 633 PM EDT...a strong thunderstorm was over Ivey, or 9 miles
northwest of Irwinton...moving south at 10 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Irwinton, Gordon, Ivey, McIntyre and Coopers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3282 8313 3279 8335 3280 8335 3292 8336
      3293 8336 3297 8337 3300 8327 3294 8316
TIME...MOT...LOC 2233Z 343DEG 10KT 3291 8328

HAIL...0.25IN
WIND...40MPH

Special weather statement, Aug 11, 6:37 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
637 PM EDT Tue Aug 11 2020

GAZ069-080-081-112315-
Taylor GA-Upson GA-Crawford GA-
637 PM EDT Tue Aug 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN TAYLOR...
SOUTHEASTERN UPSON AND WESTERN CRAWFORD COUNTIES UNTIL 715 PM EDT...

At 637 PM EDT...a strong thunderstorm was near Salem, or 9 miles west
of Roberta...moving south at 10 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Fickling Mill and Salem.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3274 8424 3277 8411 3264 8406 3260 8413
      3262 8422
TIME...MOT...LOC 2237Z 346DEG 8KT 3271 8417

HAIL...0.25IN
WIND...40MPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 8:08 PM EDT	Special Weather Statement	FFC	Chattahoochee, Muscogee	37 min
Aug 11, 2:52 PM EDT	Special Weather Statement	FFC	Taliaferro	23 min
Aug 11, 3:15 PM EDT	Special Weather Statement	FFC	Taliaferro	30 min
Aug 11, 4:28 PM EDT	Special Weather Statement	FFC	Oglethorpe	32 min
Aug 11, 4:39 PM EDT	Special Weather Statement	FFC	Washington	36 min
Aug 11, 4:54 PM EDT	Special Weather Statement	FFC	Coweta	36 min
Aug 11, 5:28 PM EDT	Special Weather Statement	FFC	Wilkinson	32 min
Aug 11, 5:30 PM EDT	Special Weather Statement	FFC	Meriwether	30 min
Aug 11, 5:43 PM EDT	Special Weather Statement	FFC	Troup	32 min
Aug 11, 5:59 PM EDT	Special Weather Statement	FFC	Johnson	46 min
Aug 11, 6:00 PM EDT	Special Weather Statement	FFC	Meriwether	45 min
Aug 11, 6:03 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Laurens	42 min
Aug 11, 6:08 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Meriwether, Talbot, Troup	38 min
Aug 11, 6:09 PM EDT	Special Weather Statement	FFC	Marion, Stewart	36 min
Aug 11, 6:30 PM EDT	Severe Thunderstorm Warning	FFC	Marion, Webster	45 min
Aug 11, 6:33 PM EDT	Special Weather Statement	FFC	Wilkinson	27 min
Aug 11, 6:59 PM EDT	Special Weather Statement	FFC	Schley	31 min
Aug 11, 7:05 PM EDT	Severe Thunderstorm Warning	FFC	Marion, Schley, Sumter, Webster	40 min
Aug 11, 7:15 PM EDT	Special Weather Statement	FFC	Bleckley	30 min
Aug 11, 7:16 PM EDT	Special Weather Statement	FFC	Wilkinson	29 min
Aug 11, 7:23 PM EDT	Special Weather Statement	FFC	Houston	37 min
Aug 11, 7:35 PM EDT	Special Weather Statement	FFC	Baldwin	25 min
Aug 11, 7:45 PM EDT	Special Weather Statement	FFC	Schley	30 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.