Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

July 10, 2011Meriwether County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 10, 2011, 2:33 PM EDT for Meriwether County, Georgia. It was in force for 57 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: Jul 10, 2011, 2:33 PM EDT (18:33 UTC)
Expired: Jul 10, 2011, 3:30 PM EDT
In force: 57 min
Issued by: NWS Atlanta, GA

County Meriwether County, GA

The radar

The Atlanta radar (KFFC), 53 km from the middle of the area, began a volume at 18:37 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 55 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: 1762 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 603 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -46 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 Jul 10, 1:45 PM EDT, 48 minutes earlier.

Area forecast discussion, Jul 10, 1:45 PM EDT, 48 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
145 PM EDT SUN JUL 10 2011

.UPDATE...
QUICK UPDATE TO INCREASE POPS AND LOWER TEMPS A LITTLE IN S AND
SW COUNTIES. WAA ALONG BOUNDARY CONTINUES LATE THIS MORNING.
CONVECTION NOT REAL STRONG AND APPEARS ELEVATED...BUT SHOULD PUSH
OUT BOUNDARIES FOR NEW SFC BASED CONVECTION SOON. EXPECT COVERAGE
ON NORTH SIDE OF CURRENT PRECIP TO BE LOWER THAN YESTERDAY...ABOUT
30-40 PCT OR SO. REST OF NEAR TERM FCST LOOKS GOOD.

APPEARS PRIMARY PROBLEM TODAY WILL BE WILL WE REACH HEAT ADVISORY
CRITERIA MON AND TUES. WILL BE CLOSE BUT SUSPICIOUS 2M DEWPOINTS
FROM GFS NOT HELPING MUCH. A FEW GRID POINTS IN FAR NORTH GA IN
THE MOUNTAINS HAD 18Z TUES DEWPOINTS IN THE LOW 80S WHERE 0.10 TO
0.25 INCH PRECIP WAS FCST. VALUES IN THE LOW TO MID 70S APPEAR
MORE REASONABLE. WITH FCST TEMPS IN THE LOW TO MID 90S MON...ONLY
SOME SE COUNTIES EXCEED HEAT ADV CRITERIA OF 105. BUT WITH FCST
HIGHS OF MID TO UPPER 90S ON TUES AND DEWPOINTS IN THE LOW 70S...
WHICH MAY BE UNLIKELY IF TEMPS GET THAT WARM...HEAT INDEX VALUES
GET TO 105 TO 110 OVER MOST AREAS. RECALL THAT WE ALSO REQUIRE MIN
TEMPS TO REMAIN ABOVE 75 FOR A HEAT ADVISORY TO BE VALID. AGAIN
CURRENT FCST MIN TEMPS ARE CLOSE TO THIS LEVEL...ESP IN SRN
COUNTIES. WILL WAIT SOME BEFORE DECIDING ON WHETHER ANY
ADVISORIES ARE REQUIRED.

SNELSON

&&

.PREV DISCUSSION... /ISSUED 745 AM EDT SUN JUL 10 2011/

PREV DISCUSSION... /ISSUED 346 AM EDT SUN JUL 10 2011/

SHORT TERM /TODAY THROUGH TUESDAY/...
MODELS MAINTAIN UPPER RIDGE OVER THE COUNTY WARNING AREA THROUGH
THE PERIOD...BUT WITH A WARM MOIST AIRMASS IN PLACE...LOOK FOR
ISOLATED TO SCATTERED DIURNALLY DRIVEN SHOWERS AND THUNDERSTORMS
TO BE THE RULE FOR MUCH OF THE SHORT TERM PERIOD. MODELS SIMILAR
WITH THE WEAK FRONT STRETCHING ACROSS NORTH GEORGIA DRIFTING INTO
CENTRAL GEORGIA TODAY AND MEANDERING ACROSS THAT AREA INTO MONDAY.
THIS BOUNDARY SHOULD ENHANCE PRECIP DEVELOPMENT OVER THAT AREA AND
WILL CONTINUE TO SHOW HIGHEST POPS THERE. MODELS SHOW THIS OLD
BOUNDARY PUSHING INTO SOUTH GEORGIA BY TUESDAY AS A SECOND BOUNDARY
DRIFTS SOUTHWARD FROM THE OHIO-TENNESSEE VALLEY REGION. WITH THIS
BOUNDARY IN THE VICINITY WILL BEGIN TO SHIFT FOCUS BACK TO THE
NORTH TUESDAY AND WILL SHOW SLIGHTLY BETTER POPS OVER EXTREME
NORTHERN COUNTIES. HOT TEMPERATURES WILL ALSO BE THE RULE THROUGH
THE PERIOD. MAV/MET MOS SIMILAR WITH HIGHS APPROACHING THE CENTURY
MARK ACROSS SOME AREAS (ESPECIALLY CENTRAL) ON MONDAY AND TUESDAY.
THIS WILL PUT HEAT INDICES IN THE 105 TO 110 RANGE IN SOME
AREAS...AND A HEAT ADVISORY WILL LIKELY BE NEEDED. EVEN WITH HIGHS
TODAY IN THE MID AND UPPER 90S...SOME AREAS LIKELY TO SEE HEAT
INDICES IN THE 100 TO 105 RANGE...BUT OVERNIGHT LOWS NOT QUITE
MEETING CRITERIA.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
EXTENDED PROGS SIMILAR WITH THE UPPER RIDGE BEGINNING TO
WEAKEN/BREAK DOWN OVER OUR AREA WEDNESDAY INTO FRIDAY AS AN UPPER
TROF DEEPENS FROM THE NEW ENGLAND STATES. MEANWHILE...MODELS SHOW
THE FRONTAL BOUNDARY PUSHING INTO NORTH GEORGIA WEDNESDAY... THEN
MEANDERING SOMEWHERE ACROSS CENTRAL/SOUTH GEORGIA THURSDAY INTO
FRIDAY...AS SURFACE HIGH PRESSURE BEGINS TO WEDGE DOWN THE
APPALACHIANS. SHOULD SEE INCREASED CHANCES FOR CONVECTION
WEDNESDAY INTO FRIDAY WITH THE FRONT SOMEWHERE OVER OUR AREA. SOME
DRIER AIR ADVECTING INTO THE STATE SATURDAY. HOT TEMPS CONTINUING
WEDNESDAY MOST AREAS AHEAD OF THE FRONT. COOLER REST OF THE PERIOD
WITH CLOUDS AND BETTER CHANCES FOR PRECIP.

41

&&

.AVIATION...
18Z UPDATE...
GENERALLY VFR CONDITIONS ARE EXPECTED ACROSS THE FORECAST AREA
THROUGH 06Z...OUTSIDE OF CONVECTION. BEST CHANCES FOR CONVECTION
WILL BE ACROSS CENTRAL GEORGIA...BUT ISOLATED TO SCATTERED
THUNDERSTORMS ARE STILL LIKELY ACROSS THE NORTH...THROUGH AROUND
03Z. SCATTERED TO WIDESPREAD MVFR VISIBILITIES ARE EXPECTED TO
DEVELOP AGAIN BETWEEN 06Z AND 15Z...WITH LOCAL IFR AND BELOW
CONDITIONS POSSIBLE. COULD SEE SOME IFR CEILINGS IN NORTHEAST AND
EAST CENTRAL GEORGIA AGAIN BETWEEN 08Z AND 14Z. WINDS ARE GOING TO
REMAIN A PROBLEM. WESTWARD AND SOUTHWARD PUSH OF THE EASTERLY WINDS
WAS A BIT MORE EXTENSIVE THAN ORIGINALLY THOUGHT...AND THE
PERSISTENCE HAS BEEN HIGHER AS WELL. MOS WINDS ARE ONCE AGAIN TRYING
TO KEEP WINDS WEST THROUGH THE BULK OF THE FORECAST PERIOD...BUT I
BELIEVE WE WILL SEE A BRIEF PERIOD OF SOUTHWEST WINDS THIS AFTERNOON
ACROSS ATLANTA METRO TAF SITES WITH A RETURN TO SOUTHEAST BY 02Z.
KAHN SHOULD REMAIN EAST THROUGH THE NIGHT WITH KMCN AND KCSG
REMAINING PREDOMINATELY WESTERLY.

//ATL CONFIDENCE...18Z UPDATE...
MEDIUM TO HIGH ALL ELEMENTS...EXCEPT WIND WHICH REMAINS MEDIUM AT
BEST.

20

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          95  73  96  74 /  30  30  20  20
ATLANTA         91  75  93  76 /  30  30  20  20
BLAIRSVILLE     88  70  89  70 /  30  20  20  20
CARTERSVILLE    92  71  94  71 /  30  20  20  20
COLUMBUS        91  76  97  76 /  70  30  30  20
GAINESVILLE     91  74  93  75 /  30  30  20  20
MACON           93  74  97  74 /  50  30  30  20
ROME            93  73  98  72 /  20  20  20  20
PEACHTREE CITY  92  71  94  71 /  50  30  20  20
VIDALIA         93  76  96  76 /  60  40  40  30

&&

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

13

Hazardous weather outlook, Jul 10, 5:40 AM EDT, 8 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 AM EDT SUN JUL 10 2011

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-110945-
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-
540 AM EDT SUN JUL 10 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT...
SCATTERED THUNDERSTORMS EXPECTED ACROSS NORTH AND CENTRAL GEORGIA
THIS AFTERNOON AND EVENING.

.SYNOPSIS...
AN UPPER LEVEL RIDGE WILL REMAIN IN PLACE...WHILE A WEAK SURFACE
BOUNDARY CONTINUES TO MEANDER ACROSS THE AREA.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS ASSOCIATED WITH ANY THUNDERSTORM THAT DEVELOPS
WILL BE CLOUD-TO-GROUND LIGHTNING AND STRONG WINDS.

.DISCUSSION...
MODERATE INSTABILITY WILL BE IN PLACE ACROSS NORTH AND CENTRAL
GEORGIA BY THIS AFTERNOON WITH CAPES AROUND 2000. WITH THE WARM
AND MOIST AIRMASS IN PLACE...SHOWERS AND THUNDERSTORMS WILL
DEVELOP AGAIN THIS AFTERNOON. WHILE SOME STRONG THUNDERSTORMS ARE
EXPECTED...MOST STORMS SHOULD REMAIN BELOW SEVERE LIMITS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
THERE IS A CHANCE OF THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT.

In the hours before

Special weather statement, Jul 10, 1:55 PM EDT, 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
155 PM EDT SUN JUL 10 2011

GAZ067-101830-
155 PM EDT SUN JUL 10 2011

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN MERIWETHER COUNTY UNTIL 230 PM EDT...

AT 153 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 2 MILES NORTHWEST OF GREENVILLE...MOVING
SOUTHEAST AT 5 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
MERIWETHER COUNTY THROUGH 230 PM EDT. SOME LOCATIONS IN THE PATH OF
THIS STORM INCLUDE ODESSADALE...SAINT MARKS...GREENVILLE AND HARRIS
CITY. BRIEF HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3310 8459 3299 8463 3293 8470 3297 8479
      3308 8487 3319 8479
TIME...MOT...LOC 1755Z 322DEG 5KT 3305 8476

Special weather statement, Jul 10, 2:33 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
233 PM EDT SUN JUL 10 2011

GAZ067-079-101930-
233 PM EDT SUN JUL 10 2011

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN...MINOR FLOODING
AND FREQUENT LIGHTNING IN TALBOT AND MERIWETHER COUNTIES UNTIL
330 PM EDT...

AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF THUNDERSTORMS WITH HEAVY RAINFALL FROM GREENVILLE TO
MANCHESTER TO NEAR TALBOTTON...MOVING SOUTHEAST AT 5 MPH.

RUNOFF FROM THESE STORMS MAY CAUSE MINOR FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES ACROSS
TALBOT AND MERIWETHER COUNTIES...INCLUDING AREAS AROUND ODESSADALE...
GREENVILLE...HARRIS CITY...FLINT HILL...WOODLAND...WARM SPRINGS...
MANCHESTER AND PLEASANT HILL. ADDITIONALLY...FREQUENT CLOUD TO
GROUND LIGHTNING CAN BE EXPECTED WITH THE STRONGER STORMS. MOVE
INDOORS IF YOU HEAR THUNDER OR SEE LIGHTNING.

&&

LAT...LON 3308 8487 3312 8475 3291 8464 3291 8451
      3288 8451 3288 8448 3286 8449 3284 8446
      3271 8454 3267 8465 3277 8470 3284 8470
      3286 8474
TIME...MOT...LOC 1830Z 322DEG 5KT 3301 8472

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:55 PM EDT	Special Weather Statement	FFC	Meriwether	35 min
Jul 10, 3:25 PM EDT	Special Weather Statement	FFC	Schley	20 min
Jul 10, 3:35 PM EDT	Severe Thunderstorm Warning	FFC	Schley, Taylor	25 min
Jul 10, 4:13 PM EDT	Special Weather Statement	FFC	Dodge, Laurens	32 min
Jul 10, 4:26 PM EDT	Special Weather Statement	FFC	Monroe	34 min
Jul 10, 4:45 PM EDT	Special Weather Statement	FFC	Bleckley, Pulaski	30 min
Jul 10, 5:07 PM EDT	Special Weather Statement	FFC	Haralson	23 min
Jul 10, 5:18 PM EDT	Special Weather Statement	FFC	Laurens, Treutlen	42 min
Jul 10, 5:35 PM EDT	Special Weather Statement	FFC	Carroll, Haralson	40 min
Jul 10, 6:03 PM EDT	Special Weather Statement	FFC	Haralson	27 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.