Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

November 22, 2011Troup County, Georgia

NWS Atlanta, GA issued this special weather statement at Nov 22, 2011, 5:57 PM EST for Troup County, Georgia. It was in force for 33 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: Nov 22, 2011, 5:57 PM EST (22:57 UTC)
Expired: Nov 22, 2011, 6:30 PM EST
In force: 33 min
Issued by: NWS Atlanta, GA

County Troup County, GA

The radar

The Atlanta radar (KFFC), 49 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 54 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: 21 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 712 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 69 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.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Nov 22, 2:27 PM EST, 3 hours 30 minutes earlier.

Area forecast discussion, Nov 22, 2:27 PM EST, 3 hours 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
227 PM EST TUE NOV 22 2011

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
LATEST ANALYSIS SHOWS A SURFACE LOW PUSHING INTO THE OHIO VALLEY
WITH A TRAILING COLD FRONT APPROACHING THE MISSISSIPPI RIVER
VALLEY REGION. REGIONAL RADARS SHOW A LINE OF SHOWERS AND
THUNDERSTORMS WELL AHEAD OF THE COLD FRONT...DEEP IN THE WARM
SECTOR... STRETCHING FROM SW LA INTO CENTRAL TN. LOCAL RADARS SHOW
A WEAK LINE OF SHOWERS AND THUNDERSTORMS MOVING INTO NW GA...BUT
AREA INSTABILITIES REMAIN WEAK WITH SOME MID LEVEL CAPPING/WARM
AIR HELPING TO HINDER STRONG STORM DEVELOPMENT. A COUPLE OF HIGH
RESOLUTION MODELS HAVE INITIALIZED WELL WITH THIS FIRST LINE OF
CONVECTION... SUGGESTING THE INITIAL ACTIVITY WILL PUSH DOWN INTO
THE ATLANTA AREA BY EARLY EVENING (6-8PM)...THEN ACROSS MUCH OF
CENTRAL GA THROUGH MIDNIGHT. THEN MODELS SHOW ANOTHER ROUND OF
CONVECTION DEVELOPING ALONG AND JUST AHEAD OF THE COLD FRONT AND
PUSHING ACROSS THE AREA AFTER MIDNIGHT. MODEL INSTABILITIES
REMAIN MODEST AT BEST WITH MAYBE 500-800 J/KG AFTERNOON CAPES
DECREASING TO UNDER 400 J/KG BY MIDNIGHT. THIS COUPLED WITH WEAKENING
UPPER SUPPORT AND LACK OF STRONG FRONTAL FORCING SUGGEST A LESSENING
CHANCE FOR SEVERE STORMS THIS EVENING AND OVERNIGHT. THEREFORE...
EXPECT THE GREATER SEVERE STORM THREAT TO REMAIN WEST OF THE STATE
THIS AFTERNOON AND EVENING... WITH OCCASIONAL CLOUD TO GROUND
LIGHTNING AND MAYBE WIND GUSTS TO 45 MPH BEING THE MAIN STORM THREATS
THIS EVENING AND OVERNIGHT. HOWEVER...FOR NOW... WILL CONTINUE TO
PLAY IT SAFE AND WORD FOR A FEW STORMS POSSIBLY SEVERE IN THE
FORECAST FOR THIS EVENING... BUT SUSPECT WE CAN BACK OFF ON THIS
SLIGHT THREAT BY MID EVENING IF CURRENT WEAKENING TRENDS CONTINUE.
OTHERWISE...SHOWERS WITH A FEW EMBEDDED THUNDERSTORMS SHOULD PUSH
SOUTH AND EAST OF NORTH GA LATE TONIGHT...THEN CENTRAL GA BY MID-
LATE WEDNESDAY MORNING AS THE COLD FRONT PUSHES TO THE GA COAST BY
EARLY WEDNESDAY AFTERNOON. BEHIND THE FRONT...HIGH PRESSURE AND A
MUCH COOLER/DRIER AIR MASS WILL SETTLE OVER THE REGION... RETURNING
MORE SEASONABLE TEMPS TO THE REGION FOR WEDNESDAY NIGHT AND
THANKSGIVING DAY.

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
HIGH PRESSURE WILL DOMINANT THE AREA INTO SATURDAY. EXTENDED MODELS
ARE SIMILAR SHIFTING THE RIDGE EASTWARD SATURDAY NIGHT AS A COLD
FRONT PUSHES INTO THE MISSISSIPPI RIVER VALLEY. MODELS SHOW DEEPER
MOISTURE SPREADING IN OVER THE REGION SATURDAY-SATURDAY NIGHT AHEAD
OF THE APPROACHING COLD FRONT...STILL PROGGED TO PUSH ACROSS THE
AREA ON SUNDAY. WILL CONTINUE TO SHOW A CHANCE OF MAINLY SHOWERS
SATURDAY NIGHT-SUNDAY TIME-FRAME AS INSTABILITIES APPEAR VERY WEAK
AT THIS TIME. HOWEVER... A SHARP UPPER SHORT WAVE TROUGH COULD
WARRANT ADDING THE MENTION OF THUNDER IF PERSIST ON LATER MODEL
RUNS. FRONT PUSHES EAST BY EARLY MONDAY...BUT WRAP AROUND MOISTURE
AND LIGHT PRECIP MAY LINGER ACROSS NORTH GEORGIA INTO MONDAY NIGHT.
BEHIND THE FRONT...MODELS CONTINUE TO SHOW MUCH COOLER TEMPERATURES
BEHIND THIS FRONT...AND MAY NOT SEE SOME AREAS ACROSS NORTH GEORGIA
GET OUT OF THE 40S ON MONDAY.

&&

.AVIATION...
18Z UPDATE...
BIG CONCERN IS CONVECTION THIS AFTERNOON THROUGH OVERNIGHT.
EXPECTING DEVELOPMENT AHEAD OF THE MAIN LINE TO IMPACT THE METRO
AREA 21-00Z...WITH SURROUNDING AREAS SOON AFTER. MAIN LINE
EXPECTED TO PUSH THROUGH WITH HIGHER TSTM POTENTIAL GENERALLY
AROUND 03Z. MVFR CIGS EXPECTED WITH THIS LINE...WITH THINGS SLOW
TO IMPROVE UNTIL AFTER 12Z. OVERNIGHT WINDS SHOULD BE GENERALLY SW
AT 8-10KTS BECOMING W AND THEN NW THROUGH THE MORNING. EXPECTING
GUSTY CONDITIONS WED...WITH NW WINDS AT 13-15KTS AND GUSTS TO
23-25KTS.

//ATL CONFIDENCE...18Z UPDATE...
HIGH CONFIDENCE ON ALL ELEMENTS...EXCEPT MEDIUM FOR TIMING OF
TSTM IMPACT TO ATL.

31

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          58  69  38  65 /  90  20   5   5
ATLANTA         56  65  42  66 / 100  10   5   5
BLAIRSVILLE     50  61  34  62 / 100  20   5   5
CARTERSVILLE    55  64  34  65 / 100  10   5   5
COLUMBUS        58  69  41  67 /  80  20   5   5
GAINESVILLE     55  66  39  64 / 100  20   5   5
MACON           61  71  37  68 /  80  40   5   5
ROME            52  64  35  66 / 100  10   5   5
PEACHTREE CITY  54  65  33  65 / 100  10   5   5
VIDALIA         65  73  44  68 /  80  60   5   5

&&

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

39

Hazardous weather outlook, Nov 22, 5:50 PM EST, 7 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
550 PM EST TUE NOV 22 2011

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-231045-
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-
550 PM EST TUE NOV 22 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TONIGHT...
ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS PARTS OF NORTH AND
MUCH OF CENTRAL GEORGIA TONIGHT.

.SYNOPSIS...
A COLD FRONT MOVING THROUGH THE LOWER MISSISSIPPI VALLEY WILL MOVE
ACROSS NORTH AND CENTRAL GEORGIA TONIGHT.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS FROM THE THUNDERSTORMS WILL BE DAMAGING WINDS AND
OCCASIONAL CLOUD TO GROUND LIGHTNING. HOWEVER...AN ISOLATED
TORNADO IS ALSO POSSIBLE.

.DISCUSSION...
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS ALABAMA
AND SPREAD INTO NORTH AND CENTRAL GEORGIA TONIGHT. THE ATMOSPHERE
ACROSS EXTREME NORTH GEORGIA HAS STABILIZED SOMEWHAT AND THE RISK OF
SEVERE STORMS HAS DIMINISHED IN THIS AREA. HOWEVER...SOUTH OF A LINE
FROM CEDARTOWN TO GAINESVILLE...CAPES REMAIN IN THE 400 TO 800 RANGE
AND THIS IS ENOUGH FOR A FEW STORMS TO BECOME SEVERE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...
THERE IS A CHANCE FOR THUNDERSTORMS MAINLY ACROSS CENTRAL GEORGIA
ON WEDNESDAY. NO HAZARDOUS WEATHER IS ANTICIPATED THURSDAY THROUGH
MONDAY AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS SHOULD MONITOR THE LATEST INFORMATION FOR POSSIBLE
ACTIVATION THIS AFTERNOON OR TONIGHT.

In the hours before

Special weather statement, Nov 22, 4:16 PM EST, 1 hour 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
416 PM EST TUE NOV 22 2011

GAZ042-052-066-222215-
416 PM EST TUE NOV 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR 45 MPH WINDS IN TROUP...CARROLL
AND HEARD COUNTIES UNTIL 515 PM EST...

AT 414 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM 5 MILES WEST OF FROLONA TO 20 MILES
SOUTHWEST OF GLENN...MOVING EAST AT 30 MPH.

WIND GUSTS OF 45 MPH ARE LIKELY AS THESE STORMS MOVE ACROSS TROUP...
CARROLL AND HEARD COUNTIES THROUGH 515 PM EST. SOME LOCATIONS IN THE
PATH OF THESE STORMS INCLUDE EPHESUS...BLACKJACK MOUNTAIN...
WARESVILLE...FROLONA...ROOSTERVILLE...TYUS...TEXAS...JOHN TANNER
STATE PARK...ROOPVILLE...GLENN...FRANKLIN...CENTRALHATCHEE...
LOWELL...PLANT WANSLEY AND WARES CROSSROADS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3363 8515 3344 8499 3343 8501 3328 8496
      3328 8495 3323 8494 3322 8487 3312 8486
      3304 8522 3305 8523 3349 8531
TIME...MOT...LOC 2115Z 254DEG 35KT 3333 8532 3320 8534
          3304 8550

Special weather statement, Nov 22, 5:28 PM EST, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
528 PM EST TUE NOV 22 2011

GAZ052-066-222300-
528 PM EST TUE NOV 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR 45 MPH WINDS IN TROUP AND HEARD
COUNTIES UNTIL 600 PM EST...

AT 522 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM SOUTHWEST OF WARESVILLE...MOVING NORTHEAST AT 35
MPH.

WIND GUSTS OF 45 MPH ARE LIKELY AS THIS STORM MOVES ACROSS TROUP AND
HEARD COUNTIES THROUGH 600 PM EST. SOME LOCATIONS IN THE PATH OF THE
STORM INCLUDE GLENN...WARESVILLE...TEXAS...FRANKLIN...
CENTRALHATCHEE...PLANT WANSLEY AND CORINTH.

&&

LAT...LON 3343 8504 3343 8502 3330 8496 3328 8496
      3328 8495 3323 8494 3309 8523 3330 8527
TIME...MOT...LOC 2226Z 237DEG 32KT 3319 8526

Special weather statement, Nov 22, 5:57 PM EST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
557 PM EST TUE NOV 22 2011

GAZ052-066-222330-
557 PM EST TUE NOV 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR 50 MPH WINDS IN TROUP AND HEARD
COUNTIES UNTIL 630 PM EST...

AT 554 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES WEST OF STATE LINE PARK...MOVING
NORTHEAST AT 35 MPH.

WIND GUSTS OF 50 MPH ARE LIKELY AS THIS STORM MOVES ACROSS TROUP AND
HEARD COUNTIES THROUGH 630 PM EST. SOME LOCATIONS IN THE PATH OF THE
STORM INCLUDE PIEDMONT HEIGHTS...LONG CANE...STATE LINE PARK...
CANNONVILLE...ABBOTTSFORD...SMITHS CROSSROAD...GLENN...LAGRANGE...
WARES CROSSROADS...BIG SPRINGS...HILLCREST...MOUNTVILLE...LOUISE...
HARRISONVILLE AND HOGANSVILLE.

&&

LAT...LON 3331 8499 3310 8486 3308 8487 3301 8487
      3289 8519 3315 8525
TIME...MOT...LOC 2256Z 234DEG 29KT 3301 8528

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 22, 4:16 PM EST	Special Weather Statement	FFC	Heard	59 min
Nov 22, 4:36 PM EST	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Heard	54 min
Nov 22, 5:28 PM EST	Special Weather Statement	FFC	Heard	32 min
Nov 22, 6:07 PM EST	Tornado Warning	FFC	Heard, Troup	38 min
Nov 22, 6:38 PM EST	Special Weather Statement	FFC	Carroll, Cobb, Douglas, Paulding	37 min

Nearby

Special Weather Statements in Georgia, 2011 Every special weather statement in 2011

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.