Alert archive / Georgia / Special Weather Statements in 2014

Special Weather Statement, NWS Atlanta, GA

August 18, 20146 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Aug 18, 2014, 9:53 AM EDT for 6 counties in Georgia. It was in force for 52 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 18, 2014, 9:53 AM EDT (13:53 UTC)
Expired
Aug 18, 2014, 10:45 AM EDT
In force
52 min
Issued by
NWS Atlanta, GA

Counties Catoosa County, GA, Dade County, GA, Gordon County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 110 km from the middle of the area, began a volume at 13:56 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, 1.9 hours before the alert went out and 160 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 2014-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1076 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 2014-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1076 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 18, 7:18 AM EDT, 2 hours 35 minutes earlier.

Area forecast discussion, Aug 18, 7:18 AM EDT, 2 hours 35 minutes before
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Hazardous weather outlook, Aug 18, 5:00 AM EDT, 4 hours 53 minutes before
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In the hours before

Special weather statement, Aug 18, 6:36 AM EDT, 3 hours 17 minutes before
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Special weather statement, Aug 18, 7:23 AM EDT, 2 hours 30 minutes before
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Special weather statement, Aug 18, 8:30 AM EDT, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
830 AM EDT MON AUG 18 2014

GAZ004>008-014-181315-
830 AM EDT MON AUG 18 2014

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN WHITFIELD...
UNION...MURRAY...DAWSON...FANNIN AND GILMER COUNTIES UNTIL 915 AM
EDT...

AT 824 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM LOVING TO NORTH GEORGIA SPEEDWAY...MOVING
EAST AT 25 MPH.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES ACROSS
WHITFIELD...UNION...MURRAY...DAWSON...FANNIN AND GILMER COUNTIES...
INCLUDING AREAS AROUND MINERAL BLUFF...NORTH GEORGIA SPEEDWAY...
RAMHURST...FORT MOUNTAIN STATE PARK...TILTON...MOUNTAINTOWN...
LOVING...BLUE RIDGE...MORGANTON...NOTTELY DAM...TAILS CREEK...CHERRY
LOG...IVY LOG...HEMP AND HURST. ADDITIONALLY...COUNTRY ROADS AND
FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS ARE SUBJECT TO MINOR
FLOODING. IN ADDITION...WIND GUSTS OF 35 MPH WITH THESE STORMS ARE
POSSIBLE.

&&

LAT...LON 3497 8394 3492 8391 3490 8383 3491 8384
      3491 8381 3465 8407 3466 8413 3461 8418
      3466 8497 3482 8457 3500 8422 3499 8394
TIME...MOT...LOC 1229Z 278DEG 23KT 3494 8418 3481 8445
          3468 8475
Special weather statement, Aug 18, 9:20 AM EDT, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
920 AM EDT MON AUG 18 2014

GAZ008-009-013>016-023-181345-
920 AM EDT MON AUG 18 2014

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN WHITE...UNION...
TOWNS...PICKENS...LUMPKIN...DAWSON AND HALL COUNTIES UNTIL 945 AM
EDT...

AT 918 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM MOUNTAIN SCENE TO SEQUOYAH LAKE...MOVING
EAST AT 40 MPH.

RAINFALL AMOUNTS BETWEEN 0.5 TO 1.5 INCHES CAN BE EXPECTED ACROSS
WHITE...UNION...TOWNS...PICKENS...LUMPKIN...DAWSON AND HALL
COUNTIES...INCLUDING AREAS AROUND BLOOD MOUNTAIN SHELTER...LEN FOOTE
HIKE INN...SEQUOYAH LAKE...LAKE TAMARACK...TALKING
ROCK...MACEDONIA...HIAWASSEE...BRASSTOWN BALD...WOODS HOLE
SHELTER...VOGEL STATE PARK...SUCHES...OWLTOWN...TRACK ROCK...LOW GAP
SHELTER AND CAMP MERRILL. DRIVERS SHOULD USE CAUTION AS INTENSE
RAINFALL WILL REDUCE VISIBILITIES. PONDING OF WATER ON ROADWAYS IS
ALSO LIKELY.

&&

LAT...LON 3498 8354 3495 8354 3488 8365 3482 8365
      3480 8367 3475 8362 3465 8365 3454 8361
      3450 8365 3443 8361 3437 8368 3451 8454
      3455 8443 3455 8437 3458 8433 3457 8426
      3460 8425 3461 8419 3499 8375
TIME...MOT...LOC 1320Z 281DEG 34KT 3485 8370 3466 8397
          3453 8433

30
Special weather statement, Aug 18, 9:53 AM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
953 AM EDT MON AUG 18 2014

GAZ001>005-011-012-019-181445-
953 AM EDT MON AUG 18 2014

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN WHITFIELD...
WALKER...MURRAY...CATOOSA...CHATTOOGA...DADE...FLOYD AND GORDON
COUNTIES UNTIL 1045 AM EDT...

AT 948 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF SHOWERS AND EMBEDDED THUNDERSTORMS NEAR RISING
FAWN...MOVING EAST AT 20 MPH.  THESE SHOWERS AND THUNDERSTORMS HAVE
BEEN REDEVELOPING OVER THE SAME GENERAL AREA FOR THE PAST 2 HOURS
AND ARE EXPECTED TO CONTINUE FOR THE NEXT 1 TO 2 HOURS.

RAINFALL AMOUNTS BETWEEN 0.50 AND 1.50 INCHES CAN BE EXPECTED ACROSS
WHITFIELD...WALKER...MURRAY...CATOOSA...CHATTOOGA...DADE...FLOYD AND
GORDON COUNTIES...INCLUDING AREAS AROUND STEPHENSVILLE...RISING
FAWN...CLOUDLAND CANYON STATE PARK...NEW
ENGLAND...TRENTON...CLOUDLAND...COOPER HEIGHTS...CEDAR
GROVE...CENTER
POST...CHICKAMAUGA...LAFAYETTE...LINWOOD...TRION...BLUE SPRING AND
ROCK SPRING. DRIVERS SHOULD USE CAUTION AS INTENSE RAINFALL WILL
REDUCE VISIBILITIES. PONDING OF WATER ON ROADWAYS IS ALSO LIKELY.

&&

LAT...LON 3499 8462 3476 8464 3474 8465 3444 8466
      3450 8550 3498 8560
TIME...MOT...LOC 1351Z 281DEG 19KT 3471 8548

30

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:36 AM EDTSpecial Weather StatementFFCCatoosa54 min
Aug 18, 7:23 AM EDTSpecial Weather StatementFFCCatoosa, Dade, Murray, Walker, Whitfield67 min
Aug 18, 8:30 AM EDTSpecial Weather StatementFFCFannin, Gilmer, Union45 min
Aug 18, 9:20 AM EDTSpecial Weather StatementFFCLumpkin, Towns, White25 min
Aug 18, 10:03 AM EDTSpecial Weather StatementFFCGilmer, Lumpkin, White57 min
Aug 18, 12:19 PM EDTSpecial Weather StatementFFCGreene41 min
Aug 18, 12:29 PM EDTSevere Thunderstorm WarningFFCGreene, Oglethorpe, Taliaferro, Wilkes46 min
Aug 18, 1:35 PM EDTSpecial Weather StatementFFCStewart, Webster25 min
Aug 18, 1:59 PM EDTSpecial Weather StatementFFCStewart, Webster31 min
Aug 18, 3:21 PM EDTSpecial Weather StatementFFCDade, Walker24 min
Aug 18, 4:47 PM EDTSpecial Weather StatementFFCFloyd, Polk43 min
Aug 18, 5:01 PM EDTSevere Thunderstorm WarningFFCFloyd, Polk44 min
Aug 18, 5:37 PM EDTSpecial Weather StatementFFCNewton23 min
Aug 18, 5:41 PM EDTSpecial Weather StatementFFCPaulding34 min
Aug 18, 6:14 PM EDTSpecial Weather StatementFFCHarris, Muscogee46 min
Aug 18, 6:23 PM EDTSpecial Weather StatementFFCTroup52 min
Aug 18, 6:24 PM EDTSpecial Weather StatementFFCOglethorpe, Wilkes36 min
Aug 18, 6:47 PM EDTSpecial Weather StatementFFCCarroll, Heard28 min
Aug 18, 6:53 PM EDTSpecial Weather StatementFFCDouglas, Fulton37 min
Aug 18, 7:00 PM EDTSpecial Weather StatementFFCFloyd, Haralson, Polk30 min
Aug 18, 7:01 PM EDTSpecial Weather StatementFFCChattahoochee, Marion, Muscogee, Stewart, Talbot, Webster44 min
Aug 18, 7:08 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Pike, Spalding52 min
Aug 18, 7:15 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Harris, Marion, Muscogee, Schley, Stewart and 3 more45 min
Aug 18, 7:19 PM EDTSpecial Weather StatementFFCDeKalb, Gwinnett26 min
Aug 18, 7:25 PM EDTSevere Thunderstorm WarningFFCDeKalb50 min
Aug 18, 7:26 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Spalding34 min
Aug 18, 7:30 PM EDTSpecial Weather StatementFFCHall30 min
Aug 18, 7:39 PM EDTSevere Thunderstorm WarningFFCGwinnett36 min
Aug 18, 7:57 PM EDTSpecial Weather StatementFFCCrawford, Macon, Peach, Schley, Sumter, Taylor33 min
Aug 18, 7:57 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette, Henry33 min

Nearby

Special Weather Statements in Georgia, 2014Every special weather statement in 2014

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.