Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

February 7, 2018Harris County, Muscogee County, Georgia

NWS Atlanta, GA issued this special weather statement at Feb 7, 2018, 10:14 AM EST for Harris County, Muscogee County, Georgia. It was in force for 46 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
Feb 7, 2018, 10:14 AM EST (15:14 UTC)
Expired
Feb 7, 2018, 11:00 AM EST
In force
46 min
Issued by
NWS Atlanta, GA
Hail
0.25 in
Wind
50

Counties Harris County, GA, Muscogee County, GA

The radar

The Maxwell AFB radar (KMXX), 77 km from the middle of the area, began a volume at 15:13 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, 3.2 hours before the alert went out and 85 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 2018-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 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 2018-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 504 square meters per square second.19395878Sfc1 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
14 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
486 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
504 m²/s²
0-3 km storm-relative helicity
655 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Feb 7, 10:14 AM EST, 0 minutes earlier.

Area forecast discussion, Feb 7, 10:14 AM EST, 0 minutes before
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Hazardous weather outlook, Feb 7, 4:42 AM EST, 5 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
442 AM EST Wed Feb 7 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-080945-
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-
442 AM EST Wed Feb 7 2018

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

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

Another upper level system and associated cold front will move
through the area today resulting in high rain chances along with
thunderstorms. An isolated severe storm is possible with strong
winds the primary concern although an isolated tornado cannot be
totally ruled out.

One to two inch rainfall totals will create ponding of water on
roadways and localized minor flooding.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Several additional upper level systems will move through during
the extended period including the weekend resulting in a very wet
period. Total rainfall could reach 3 to 4 inches over portions of
north Georgia this week with some minor flooding likely.
Thunderstorms are also possible on Sunday Afternoon although
severe storms are not anticipated at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Local storm report, Feb 7, 8:00 AM EST, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
800 AM EST WED FEB 07 2018

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

0743 AM     TSTM WND DMG     BREMEN                  33.72N  85.15W
02/07/2018                   HARALSON           GA   EMERGENCY MNGR

            TREE DOWN ON AN APARTMENT COMPLEX WITHIN THE CITY OF
            BREMEN.

&&

EVENT NUMBER FFC1800102

NLIST
Special weather statement, Feb 7, 8:08 AM EST, 2 hours 6 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
808 AM EST WED FEB 7 2018

GAZ031-032-043-071345-
Douglas GA-Cobb GA-Paulding GA-
808 AM EST WED FEB 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR DOUGLAS...SOUTHWESTERN COBB AND
SOUTHEASTERN PAULDING COUNTIES UNTIL 845 AM EST...

At 808 AM EST...National Weather Service doppler radar indicated a
line of strong thunderstorms along a line extending from New Georgia
to Lake Val-Do-Mar to Fairplay...and moving east at 40 mph.

  HAZARD...40 to 50 mph wind and enhanced risk of a brief tornado.

  IMPACT...While winds should result in minor damage to tree limbs
           and blowing around of light...unsecured objects...the
           leading edge of this line of storms has also exhibited
           areas of localized rotation. A brief tornado could
           quickly form.

Some locations in the path of these storms include
Douglasville, Dallas, Villa Rica, Powder Springs, Austell, Hiram,
Lithia Springs, Sweetwater Creek State Park, Brownsville, Bill Arp,
Chapel Hill, Fairplay, Winston, Lake Val-Do-Mar, New Georgia and
Mableton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

LAT...LON 3381 8490 3390 8485 3394 8463 3377 8456
      3373 8458 3373 8460 3368 8464 3368 8465
      3366 8466 3365 8471 3362 8474 3363 8475
      3361 8477 3361 8491
TIME...MOT...LOC 1308Z 253DEG 35KT 3383 8490 3374 8487 3364 8488

WIND...50MPH
Local storm report, Feb 7, 8:32 AM EST, 1 hour 42 minutes before
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Special weather statement, Feb 7, 8:57 AM EST, 1 hour 17 minutes before
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Special weather statement, Feb 7, 9:43 AM EST, 31 minutes before
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Special weather statement, Feb 7, 10:14 AM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 7, 7:34 AM ESTSpecial Weather StatementFFCCarroll, Haralson26 min
Feb 7, 7:40 AM ESTTornado WarningFFCCarroll, Haralson, Paulding35 min
Feb 7, 8:08 AM ESTSpecial Weather StatementFFCDouglas37 min
Feb 7, 8:57 AM ESTSpecial Weather StatementFFCCoweta, Heard, Troup33 min
Feb 7, 9:12 AM ESTTornado WarningFFCCoweta, Heard, Meriwether, Troup13 min
Feb 7, 9:43 AM ESTSpecial Weather StatementFFCFayette, Henry, Spalding32 min
Feb 7, 10:46 AM ESTSpecial Weather StatementFFCChattahoochee, Muscogee, Talbot, Upson29 min
Feb 7, 11:03 AM ESTTornado WarningFFCTalbot, Taylor27 min
Feb 7, 11:18 AM ESTSpecial Weather StatementFFCMacon, Marion, Schley27 min
Feb 7, 11:30 AM ESTSpecial Weather StatementFFCCrawford, Peach, Taylor30 min
Feb 7, 11:43 AM ESTSpecial Weather StatementFFCHouston, Macon, Sumter, Webster47 min
Feb 7, 11:59 AM ESTSpecial Weather StatementFFCPeach31 min
Feb 7, 12:09 PM ESTRiver Flood WarningFFCForsyth14 hr
Feb 7, 12:20 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dooly, Pulaski, Twiggs40 min
Feb 7, 1:00 PM ESTSpecial Weather StatementFFCDodge, Johnson, Laurens30 min
Feb 7, 1:29 PM ESTSpecial Weather StatementFFCEmanuel, Johnson, Montgomery, Toombs, Treutlen, Wheeler46 min

Nearby

Special Weather Statements in Georgia, 2018Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.