Alert archive / Tennessee / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

June 28, 2020Polk County, Tennessee

NWS Atlanta, GA issued this special weather statement at Jun 28, 2020, 2:38 PM EDT for Polk County, Tennessee. It was in force for 37 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
Jun 28, 2020, 2:38 PM EDT (18:38 UTC)
Expired
Jun 28, 2020, 3:15 PM EDT
In force
37 min
Issued by
NWS Atlanta, GA
Wind
40

County Polk County, TN

The radar

The Northeast Alabama radar (KHTX), 143 km from the middle of the area, began a volume at 18:39 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, 6.6 hours before the alert went out and 176 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2020-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2020-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
650 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1114 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

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 Jun 28, 2:06 PM EDT, 32 minutes earlier.

Area forecast discussion, Jun 28, 2:06 PM EDT, 32 minutes before
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Hazardous weather outlook, Jun 28, 11:49 AM EDT, 2 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
1149 AM EDT Sun Jun 28 2020

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-291600-
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-
1149 AM EDT Sun Jun 28 2020

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

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

Scattered showers and thunderstorms are expected to develop this
afternoon, mainly impacting north Georgia. Strong storms will be
possible with gusty winds, small hail, frequent lightning and
heavy rainfall as the primary concerns. Some severe storms could
impact northeast Georgia with damaging winds and large hail.

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

Scattered to numerous showers and thunderstorms will be possible
each afternoon and evening. Gusty winds, frequent lightning, and
heavy rain will be possible with any storms that do develop.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Local storm report, Jun 28, 1:17 PM EDT, 1 hour 21 minutes before
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Local storm report, Jun 28, 1:20 PM EDT, 1 hour 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
120 PM EDT SUN JUN 28 2020

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

0411 PM     TSTM WND DMG     1 SW HOLLIS LATHEM RESE 34.36N  84.27W
06/27/2020                   CHEROKEE           GA   EMERGENCY MNGR

            REPORT OF TREES AND POWER LINES DOWN.

&&

EVENT NUMBER FFC2000830

BDL
Local storm report, Jun 28, 1:23 PM EDT, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
123 PM EDT SUN JUN 28 2020

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

0407 PM     TSTM WND DMG     1 NNE LATHEMTOWN        34.27N  84.30W
06/27/2020                   CHEROKEE           GA   EMERGENCY MNGR

            REPORT OF TREES AND POWER LINES DOWN.

&&

EVENT NUMBER FFC2000831

BDL
Special weather statement, Jun 28, 1:46 PM EDT, 52 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
146 PM EDT Sun Jun 28 2020

GAZ037-047-049-281815-
Morgan GA-Walton GA-Oconee GA-
146 PM EDT Sun Jun 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MORGAN...NORTHEASTERN
WALTON AND OCONEE COUNTIES UNTIL 215 PM EDT...

At 145 PM EDT...a strong thunderstorm was near Gratis, or 8 miles
northeast of Monroe...moving east at 25 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
Watkinsville, North High Shoals, Bishop, Farmington and Eastville.

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 3390 8339 3390 8338 3389 8338 3388 8337
      3381 8337 3373 8346 3385 8364 3391 8361
TIME...MOT...LOC 1745Z 290DEG 20KT 3387 8359

WIND...40MPH
Special weather statement, Jun 28, 2:14 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
214 PM EDT Sun Jun 28 2020

GAZ005-281845-
Murray GA-
214 PM EDT Sun Jun 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MURRAY COUNTY UNTIL
245 PM EDT...

At 214 PM EDT...a strong thunderstorm was over Gregory, or 11 miles
north of Chatsworth...moving east at 20 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
Cisco, Tennga, Gregory and Sumac.

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 3488 8462 3488 8483 3491 8483 3494 8484
      3496 8482 3499 8476 3499 8462
TIME...MOT...LOC 1814Z 251DEG 19KT 3492 8479

WIND...40MPH
Special weather statement, Jun 28, 2:38 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
238 PM EDT Sun Jun 28 2020

GAZ005-006-281915-
Murray GA-Fannin GA-
238 PM EDT Sun Jun 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MURRAY AND
NORTHWESTERN FANNIN COUNTIES UNTIL 315 PM EDT...

At 237 PM EDT...a strong thunderstorm was near Cohutta Wilderness, or
15 miles northeast of Chatsworth...moving east at 25 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
Cohutta Wilderness, Colwell and Jones Mill.

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 3499 8443 3496 8441 3488 8445 3489 8467
      3499 8468
TIME...MOT...LOC 1837Z 268DEG 20KT 3496 8464

WIND...40MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:01 PM EDTSpecial Weather StatementFFCToombs29 min
Jun 27, 8:09 PM EDTSpecial Weather StatementFFCToombs36 min
Jun 27, 9:10 PM EDTSpecial Weather StatementFFCTelfair35 min
Jun 27, 10:48 PM EDTSpecial Weather StatementFFCTelfair27 min
Jun 28, 1:46 PM EDTSpecial Weather StatementFFCOconee29 min
Jun 28, 2:14 PM EDTSpecial Weather StatementFFCMurray31 min
Jun 28, 3:13 PM EDTSpecial Weather StatementFFCFannin, Gilmer, Lumpkin, Union32 min
Jun 28, 3:47 PM EDTSpecial Weather StatementFFCDawson, Fannin, Gilmer, Lumpkin, Pickens, Towns and 2 more28 min
Jun 28, 5:29 PM EDTSpecial Weather StatementFFCGilmer, Lumpkin31 min
Jun 28, 7:51 PM EDTSpecial Weather StatementFFCChattahoochee, Stewart24 min
Jun 28, 7:56 PM EDTSevere Thunderstorm WarningFFCStewart34 min

Nearby

Special Weather Statements in Tennessee, 2020Every 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.