Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 159, NWS Atlanta, GA

June 24, 20185 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 24, 2018, 5:49 PM EDT for 5 counties in Georgia. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 24, 2018, 5:49 PM EDT (21:49 UTC)
Expired: Jun 24, 2018, 6:30 PM EDT
In force: 41 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Fannin County, GA, Gilmer County, GA, Murray County, GA, Union County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 161 km from the middle of the area, began a volume at 21:51 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.

What was reported inside it

Time	Report	Where	Remark
Jun 24, 6:27 PM EDT	TSTM WND DMG	Blue Ridge, GA	POWER LINES REPORTED DOWN ON E MAIN ST NEAR THE INTERSECTION OF MESSER ST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 38 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.8 hours before the alert went out and 170 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: 1582 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

046 
WUUS52 KFFC 242149
SVRFFC
GAC111-123-213-291-313-242230-
/O.NEW.KFFC.SV.W.0159.180624T2149Z-180624T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
549 PM EDT SUN JUN 24 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Murray County in northwestern Georgia...
  Northern Gilmer County in north central Georgia...
  Northeastern Whitfield County in northwestern Georgia...
  Northwestern Union County in north central Georgia...
  Fannin County in north central Georgia...

* Until 630 PM EDT.

* At 548 PM EDT, severe thunderstorms were located along a line
  extending from near Turtletown to Beaverdale, moving southeast at
  25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Ellijay, Blue Ridge, Eton, Cohutta, Morganton, Crandall, Sumac,
  Jones Mill, Higdon, Gregory, Loving, Cohutta Wilderness, Epworth,
  Conasauga Lake, Beaverdale, Mineral Bluff, Cherry Log, Fort
  Mountain State Park, Hemp and Tails Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If you see wind damage...hail or flooding...wait until the storm has
passed...and then call the National Weather Service toll free
at 1 8 6 6 7 6 3 4 4 6 6 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3499 8401 3495 8396 3475 8436 3466 8461
      3499 8497
TIME...MOT...LOC 2148Z 330DEG 22KT 3519 8441 3494 8485 

HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

539 
WWUS52 KFFC 242215
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
615 PM EDT SUN JUN 24 2018

GAC111-123-213-291-313-242230-
/O.CON.KFFC.SV.W.0159.000000T0000Z-180624T2230Z/
Murray GA-Gilmer GA-Whitfield GA-Union GA-Fannin GA-
615 PM EDT SUN JUN 24 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHEASTERN MURRAY...NORTHERN GILMER...NORTHEASTERN WHITFIELD...
NORTHWESTERN UNION AND FANNIN COUNTIES...

At 615 PM EDT, severe thunderstorms were located along a line
extending from near Culberson to Cherry Log to Fort Mountain State
Park, moving southeast at 45 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Ellijay, Blue Ridge, Eton, Cohutta, Morganton, Crandall, Sumac, Jones
Mill, Higdon, Gregory, Loving, Cohutta Wilderness, Epworth, Conasauga
Lake, Beaverdale, Mineral Bluff, Cherry Log, Fort Mountain State
Park, Hemp and Tails Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3499 8401 3495 8396 3475 8436 3466 8461
      3499 8497
TIME...MOT...LOC 2215Z 310DEG 38KT 3496 8419 3478 8435 3476 8471 

HAIL...0.75IN
WIND...60MPH
 
$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 24, 3:46 PM EDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jun 24, 3:46 PM EDT, 2 hours 3 minutes before

Area Forecast Discussion
National Weather Service Peachtree City GA
346 PM EDT Sun Jun 24 2018

.SHORT TERM /Tonight through Monday Night/...

A very unstable air mass dominates the forecast area this
afternoon...however a weak inversion seems to be hindering
thunderstorm development except across the far north. Think slight
chance pops should be okay for this evening except chance pops for
the northern third. Most of the dynamics remain over far north GA as
a weak impulse travels through middle TN. Thunderstorms should
diminish overnight but have kept some low pops for the far north all
night. The ridge builds in a bit more on Monday but it looks like
another short wave may cross the TN and OH Valley tomorrow. With any
left over boundaries and an unstable air mass during the
afternoon...think low chance pops area wide will work for Monday .
afternoon and evening.

The current Heat Advisory will be left as is. Monday looks
borderline with heat index values ranging from 100 to 104 over the
central zones...with only isolated values of 105. So for now...no
advisory for Monday but the next shifts will need to take another
look.

41

.LONG TERM /Tuesday through Sunday/...

Only tweaks to the long term based on the latest guidance.

BDL

PREVIOUS DISCUSSION...
Long term portion begins with continued subdued pops across the
area as mid level 590 DM high across the area remains the main
feature keeping pops at a minimum. Looking at low end chance pops
for Tue afternoon but things will begin to change into Wed. A
shortwave trough moving through the Ohio Valley will suppress high
to the southwest and allow for some energy to move across
northern sections of the forecast area at time of peak heating
Wed afternoon. Plenty of moisture to work with as we see
precipitable water at an inch and a half to an inch and three
quarters. Throw in a cold pool aloft associated with
aforementioned shortwave and we should have no problem seeing
likely pops across the northern tier.

For the remainder of the long term period, mid level high will
try to work its way back into the area but will not be nearly as
firmly entrenched. On the southern periphery of this feature,
moisture from the tropics will advect in and despite a lack of any
large scale forcing, should see increased pops through the end of
the week, especially for the southern tier. Could certainly make
a case for likely pops for a few of the days toward the end of the
period but for now have capped at 50 percent. Seasonal to
slightly warmer than normal temps will be replaced by below normal
values by Sun with increased clouds and rain chances.

Deese

&&

AVIATION...
18Z Update...
Should be mostly vfr this afternoon with sct-bkn040-050.
Some thunderstorms starting to develop and have included a
tempo in the northern taf sites. Will have to see how the
development goes for the rest of the afternoon and evening.
Expect storms to diminish later this evening. Winds should
remain on the west side...occasionally gusty this afternoon.
Expecting a repeat of this pattern for Monday.

//ATL Confidence...18Z Update...
Medium to High confidence for all elements

41

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          74  93  73  91 /  20  30  30  50
Atlanta         75  92  75  92 /  30  30  20  30
Blairsville     68  85  66  86 /  30  30  30  50
Cartersville    72  91  72  91 /  30  30  20  30
Columbus        76  94  76  93 /  20  30  10  30
Gainesville     73  90  73  89 /  30  30  30  50
Macon           75  95  75  94 /  20  30  20  40
Rome            73  91  72  92 /  30  30  20  30
Peachtree City  73  93  74  92 /  20  30  10  30
Vidalia         77  95  76  93 /  20  40  20  60

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for the following
zones: Emanuel...Glascock...Jefferson...Johnson...Laurens...
Montgomery...Telfair...Toombs...Treutlen...Warren...Washington...
Wheeler.

&&

SHORT TERM...41
LONG TERM....BDL
AVIATION...41

Hazardous weather outlook, Jun 24, 5:26 AM EDT, 12 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
526 AM EDT Sun Jun 24 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-250930-
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-
526 AM EDT Sun Jun 24 2018

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

.DAY ONE...Today and Tonight...

...Heat Advisory In Effect For East Central Georgia...

Hot temperatures combined with high moisture values will result in
heat indices around 105 degrees this afternoon. Please see the
latest heat advisory product issued by this office for further
details.

Isolated to scattered thunderstorms are expected across north and
central Georgia this afternoon. Isolated storms will be strong to
severe,with the main hazards damaging winds, frequent lightning,
and isolated flooding from heavy rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

There is a chance of thunderstorms everyday for the next week,
mainly during the afternoon and evening hours. A few storms
could be strong to severe each day with gusty winds, frequent
lightning and isolated flooding from heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Local storm report, Jun 24, 12:48 PM EDT, 5 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1248 PM EDT SUN JUN 24 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0622 PM     TSTM WND DMG     STONE MOUNTAIN          33.81N  84.17W
06/22/2018                   DEKALB             GA   BROADCAST MEDIA

            TREE WAS BLOWN OVER ONTO A RESIDENCE IN STONE MOUNTAIN.

&&

EVENT NUMBER FFC1800420

THIEM

Special weather statement, Jun 24, 2:49 PM EDT, 3 hours before

Special Weather Statement
National Weather Service Peachtree City GA
249 PM EDT SUN JUN 24 2018

GAZ006-008-009-241930-
Union GA-Towns GA-Fannin GA-
249 PM EDT SUN JUN 24 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN UNION...NORTHWESTERN
TOWNS AND NORTHEASTERN FANNIN COUNTIES UNTIL 330 PM EDT...

At 248 PM EDT...a strong thunderstorm was near Hot House, or near
Ducktown...moving east at 25 mph.

  HAZARD...40 to 50 mph wind...up to penny 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
Blairsville, Hemp, Mineral Bluff, Gumlog, Nottely Dam, Ivy Log,
Loving, Jones Creek, Epworth, Alexanders Mill, Culberson and
Copperhill.

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 3479 8397 3496 8444 3499 8443 3499 8386
TIME...MOT...LOC 1848Z 288DEG 23KT 3502 8431

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

Special weather statement, Jun 24, 3:59 PM EDT, 1 hour 50 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
359 PM EDT SUN JUN 24 2018

GAZ009-016-242030-
Towns GA-White GA-
359 PM EDT SUN JUN 24 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN TOWNS AND NORTHERN WHITE
COUNTIES UNTIL 430 PM EDT...

At 359 PM EDT...a strong thunderstorm was over Anna Ruby Falls, or 11
miles south of Hiawassee...moving southeast at 30 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
Helen, Unicoi State Park, Whitley Gap Shelter, Robertstown, Blue
Mountain Shelter, Anna Ruby Falls, Smithgall Woods Conservation Are,
Mountain Scene, Sautee and Low Gap Shelter.

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 3488 8365 3483 8366 3482 8365 3480 8368
      3476 8363 3474 8362 3472 8364 3469 8364
      3466 8366 3464 8365 3472 8386 3473 8383
      3478 8383 3479 8378 3485 8380 3491 8376
TIME...MOT...LOC 1959Z 304DEG 28KT 3478 8372

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

Special weather statement, Jun 24, 4:41 PM EDT, 1 hour 8 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
441 PM EDT SUN JUN 24 2018

GAZ047-049-242115-
Morgan GA-Walton GA-
441 PM EDT SUN JUN 24 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MORGAN AND
SOUTHEASTERN WALTON COUNTIES UNTIL 515 PM EDT...

At 441 PM EDT...a strong thunderstorm was over Pannell, or near
Monroe...moving east 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
Monroe, Social Circle, Bostwick, Good Hope, Herndonville, Ebenezer,
Apalachee and Pannell.

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 3365 8337 3368 8374 3379 8373 3380 8348
      3377 8346 3375 8345 3374 8345 3372 8344
      3372 8343 3370 8340
TIME...MOT...LOC 2041Z 273DEG 13KT 3374 8367

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

Special weather statement, Jun 24, 4:48 PM EDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Peachtree City GA
448 PM EDT SUN JUN 24 2018

GAZ034-045-242115-
De Kalb GA-Gwinnett GA-
448 PM EDT SUN JUN 24 2018

...SIGNIFICANT WEATHER ADVISORY FOR DE KALB AND SOUTHWESTERN GWINNETT
COUNTIES UNTIL 515 PM EDT...

At 447 PM EDT...a strong thunderstorm was over Mountain Park, or 8
miles northeast of Decatur...moving east 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
Snellville, Lilburn, Clarkston, Stone Mountain, Grayson, Pine Lake,
Tucker, Mountain Park and Rosebud.

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 3388 8395 3381 8395 3376 8402 3379 8424
      3387 8424
TIME...MOT...LOC 2047Z 273DEG 10KT 3383 8415

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

Local storm report, Jun 24, 5:48 PM EDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
548 PM EDT SUN JUN 24 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0338 PM     TSTM WND DMG     3 WSW YOUNG HARRIS      34.91N  83.90W
06/24/2018                   UNION              GA   911 CALL CENTER

            SEVERAL TREES REPORTED DOWN ON HWY 515 EAST OF
            BLAIRSVILLE.

&&

EVENT NUMBER FFC1800421

KING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 4:23 AM EDT	Heat Advisory	FFC	Emanuel, Glascock, Jefferson, Johnson, Laurens, Montgomery and 6 more	16 hr
Jun 24, 2:49 PM EDT	Special Weather Statement	FFC	Union	41 min
Jun 24, 3:19 PM EDT	Severe Thunderstorm Warning	FFC	Towns, Union	41 min
Jun 24, 3:59 PM EDT	Special Weather Statement	FFC	Towns	31 min
Jun 24, 4:41 PM EDT	Special Weather Statement	FFC	Morgan	34 min
Jun 24, 4:48 PM EDT	Special Weather Statement	FFC	DeKalb	27 min
Jun 24, 6:29 PM EDT	Special Weather Statement	FFC	Fannin, Gilmer, Lumpkin, Towns, Union	46 min
Jun 24, 6:43 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	32 min
Jun 24, 7:07 PM EDT	Special Weather Statement	FFC	Lumpkin	38 min
Jun 24, 7:13 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	32 min
Jun 24, 7:45 PM EDT	Special Weather Statement	FFC	Henry, Jasper, Morgan, Newton	45 min
Jun 24, 7:57 PM EDT	Special Weather Statement	FFC	Taliaferro, Warren	33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018 Every severe thunderstorm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.