Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

July 22, 2015Harris County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 22, 2015, 6:47 PM EDT for Harris County, Georgia. It was in force for 28 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 22, 2015, 6:47 PM EDT (22:47 UTC)
Expired: Jul 22, 2015, 7:15 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA

County Harris County, GA

The radar

The Atlanta radar (KFFC), 74 km from the middle of the area, began a volume at 22:50 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, 10.8 hours before the alert went out and 78 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: 18 J/kg
Mixed-layer CIN: -179 J/kg
Mixed-layer LCL: 1155 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 4 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 22, 2:57 PM EDT, 3 hours 50 minutes earlier.

Area forecast discussion, Jul 22, 2:57 PM EDT, 3 hours 50 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
257 PM EDT WED JUL 22 2015

.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...

SHORT TERM /TODAY THROUGH THURSDAY/... CURRENT RADAR LOOP SHOWS
SHOWERS WITH SOME ISOLATED THUNDERSTORMS MOVING INTO NW GA. WEAK
WEST TO NORTHWEST FLOW IS STILL EXPECTED TO BECOME A LITTLE MORE
ACTIVE OVER THE NEXT 24 HOURS. EXCEPTING TO SEE MORE AREAL COVERAGE
TODAY THAN YESTERDAY WITH THE PRECIPITATION BUT THURSDAY APPEARS TO
BE OUR MOT ACTIVE DAY. DEEPER MOISTURE OVER TN WILL CONTINUE TO SINK
SOUTH INTO GA THROUGH THU AFTERNOON BRINGING A STRONGER SHORT WAVE
AND LIKELY POPS TO THE STATE. ALSO EXPECTING INCREASED INSTABILITY
SO THE MARGINAL RISK AREA SPC HAS OVER ALMOST THE ENTIRE STATE FOR
DAY 2 STILL LOOKS GOOD.  PERSISTENCE ON TEMPS ACROSS CENTRAL GA
LOOKS GOOD WITH SLIGHTLY COOLER TEMPS ACROSS NORTH GA. COOLER TEMPS
CWA WIDE ON THURSDAY DUE TO ADDITIONAL CLOUDS AND PRECIP.

01

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...

NOT MANY CHANGES TO THE PREVIOUS LONG TERM FORECAST. FOR FRIDAY...LARGE
SCALE SYNOPTIC PATTERN WILL BE DOMINATED BY BROAD MID-LEVEL
RIDGING OVER THE SOUTHERN PLAINS...SUPPORTING NORTHWEST FLOW
ALOFT ACROSS THE SOUTHEAST US. A WEAK DISTURBANCE WITHIN THIS
FLOW WILL INTERACT WITH A NEARLY STATIONARY SURFACE BOUNDARY TO
PROVIDE A FOCUS FOR CONVECTIVE DEVELOPMENT...PARTICULARLY ACROSS
THE CENTRAL PORTION OF THE CWA DURING THE AFTERNOON. MEANWHILE...DRIER
AIR WILL BEGIN TO FILTER INTO THE NORTHERN PORTION OF THE CWA.

SATURDAY AND SUNDAY...RELATIVELY TRANQUIL WEATHER EXPECTED AS
SURFACE HIGH PRESSURE RIDGES DOWN THE SPINE OF THE APPALACHIANS
AND H5 RIDGE BEGINS TO BUILD SLIGHTLY EAST OVER THE SOUTHEAST.
RELATIVELY DRIER AIR /PW VALUES 1-1.50INCHES/ SHOULD SUPPRESS
WIDESPREAD CONVECTION...BUT CANNOT RULE OF A FEW DIURNALLY
ENHANCED THUNDERSTORMS WITH THE CONTINUED WARM TEMPERATURES.

MONDAY THROUGH WEDNESDAY...EXPECT A GRADUAL INCREASE IN MOISTURE
DURING THIS PERIOD. POTENT TROUGH MOVING ACROSS NORTHERN ROCKIES
WILL FLATTEN THE PERSISTENT H5 RIDGE AND GENERATE MINOR
PERTURBATIONS IN THE MID LEVEL FLOW PATTERN. GFS AND ECMWF
BOTH INDICATE RIDGE WILL SUPPRESS WIDESPREAD PRECIPITATION FOR
THE MOST PART MONDAY AND TUESDAY...BUT DO EXPECT THESE
DISTURBANCES TO AFFECT THE AREA BY MID WEEK. THEREFORE...EXPECT
POPS TO INCREASE BY WEDNESDAY. WILL ALSO CONTINUE TO MONITOR THE
POTENTIAL FOR A PSUEDO-TROPICAL DISTURBANCE DEVELOPING OFF THE
EAST COAST OF FLORIDA AT THE END OF THE PERIOD...AS INDICATED BY
THE ECMWF.

KOVACIK

&&

.AVIATION...
18Z UPDATE... NO MAJOR CHANGES TO THE FORECAST. VFR CONDITIONS WILL
CONTINUE EXCEPT IN AND AROUND CONVECTIVE DEVELOPMENT THIS AFTERNOON
AND THU AFTERNOON. WINDS EXPECTED TO STAY OUT OF THE NW AT 10KT OR
LESS. NO RESTRICTIONS TO VSBYS EXCEPT IN AND AROUND TSRA ACTIVITY.

//ATL CONFIDENCE...
18Z UPDATE... HIGH CONFIDENCE ON ALL ELEMENTS

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          74  92  73  91 /  40  50  40  40
ATLANTA         75  89  73  91 /  40  50  40  50
BLAIRSVILLE     69  85  66  86 /  50  60  40  30
CARTERSVILLE    74  87  73  92 /  50  60  40  30
COLUMBUS        77  93  75  93 /  40  50  50  50
GAINESVILLE     72  90  72  90 /  40  60  40  30
MACON           75  94  75  94 /  40  50  50  50
ROME            73  89  72  92 /  50  60  40  30
PEACHTREE CITY  73  90  73  92 /  40  50  40  50
VIDALIA         77  95  76  94 /  40  50  50  50

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING
ZONES: BALDWIN...BIBB...BLECKLEY...CHATTAHOOCHEE...CRAWFORD...
CRISP...DODGE...DOOLY...EMANUEL...GLASCOCK...HANCOCK...HARRIS...
HOUSTON...JEFFERSON...JOHNSON...JONES...LAURENS...MACON...
MARION...MONROE...MONTGOMERY...MUSCOGEE...PEACH...PULASKI...
SCHLEY...STEWART...SUMTER...TALBOT...TAYLOR...TELFAIR...TOOMBS...
TREUTLEN...TWIGGS...UPSON...WARREN...WASHINGTON...WEBSTER...
WHEELER...WILCOX...WILKINSON.

&&

SHORT TERM...01
LONG TERM....KOVACIK
AVIATION...01

Hazardous weather outlook, Jul 22, 11:54 AM EDT, 6 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1154 AM EDT WED JUL 22 2015

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-231600-
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-
1154 AM EDT WED JUL 22 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

HEAT ADVISORY IN EFFECT FOR MUCH OF CENTRAL GEORGIA THIS
AFTERNOON INTO EARLY EVENING.
ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS
AFTERNOON AND EVENING.

WEATHER HAZARDS EXPECTED...
MAX HEAT INDICES OF 103 TO 109 CAN BE EXPECTED. REFER TO THE HEAT
ADVISORY /ATLNPWFFC/ FOR MORE INFORMATION.

GUSTY WINDS...FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL...CAN BE
EXPECTED WITH ANY STRONG THUNDERSTORMS. ISOLATED STORMS COULD
BE SEVERE AND PRODUCE DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

HEAT INDICES AROUND 105 WILL BE POSSIBLE OVER PORTIONS OF CENTRAL
GEORGIA ON THURSDAY.
ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ON THURSDAY.
ISOLATED STRONG THUNDERSTORMS WILL BE POSSIBLE FRIDAY THROUGH TUESDAY...
MAINLY DURING THE AFTERNOON AND EVENING HOURS. STRONG GUSTY WINDS...
FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL WILL BE THE MAIN HAZARDS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

In the hours before

Local storm report, Jul 22, 6:08 PM EDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
608 PM EDT WED JUL 22 2015

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

0520 PM     TSTM WND DMG     CHATSWORTH              34.77N  84.77W
07/22/2015                   MURRAY             GA   911 CALL CENTER

            SEVERAL TREES WERE BLOWN DOWN...INCLUDING ON HWY 411
            NORTH...HWY 411 SOUTH...AND HWY 52 ALTERNATE.

&&

EVENT NUMBER FFC1500574

RWILLIS

Special weather statement, Jul 22, 6:13 PM EDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
613 PM EDT WED JUL 22 2015

GAZ007-012-013-222245-
GILMER GA-GORDON GA-PICKENS GA-
613 PM EDT WED JUL 22 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GILMER...EASTERN GORDON
AND PICKENS COUNTIES UNTIL 645 PM EDT...

AT 613 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR TALKING ROCK TO 12
MILES NORTHWEST OF WALESKA...AND MOVING EAST AT 25 MPH.

  HAZARD...40 TO 50 MPH WIND...FREQUENT CLOUD TO GROUND LIGHTNING
           AND HEAVY RAIN.

  IMPACT...PEOPLE OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY. EXPECT
           MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF
           LIGHT...UNSECURED OBJECTS. ELECTRICAL APPLIANCES SHOULD
           NOT BE USED UNLESS IN AN EMERGENCY. LOCALIZED FLOODING IN
           LOW LYING AND POOR DRAINAGE AREAS IS ALSO LIKELY.
           MOTORISTS SHOULD SLOW DOWN AND BE PREPARED FOR POSSIBLE
           LOSS OF CONTROL DUE TO HYDROPLANING. WHEN WATER COVERS
           THE ROAD...REMEMBER TO TURN AROUND DON'T DROWN.

SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE
JASPER...TALKING ROCK...RANGER...HINTON...LAKE TAMARACK...TALONA...
TALMADGE...BLAINE...SEQUOYAH LAKE AND TATE.

LAT...LON 3454 8434 3448 8433 3447 8431 3440 8437
      3438 8451 3438 8458 3439 8459 3441 8458
      3441 8462 3449 8474 3462 8452
TIME...MOT...LOC 2213Z 291DEG 20KT 3456 8449 3447 8466

Special weather statement, Jul 22, 6:17 PM EDT, 30 minutes before

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Local storm report, Jul 22, 6:23 PM EDT, 24 minutes before

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Special weather statement, Jul 22, 6:32 PM EDT, 15 minutes before

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Special weather statement, Jul 22, 6:47 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:24 PM EDT	Special Weather Statement	FFC	Meriwether	36 min
Jul 21, 8:36 PM EDT	Special Weather Statement	FFC	Clayton, Fayette, Spalding	24 min
Jul 21, 8:55 PM EDT	Special Weather Statement	FFC	Harris	35 min
Jul 21, 8:59 PM EDT	Special Weather Statement	FFC	Spalding	31 min
Jul 21, 9:19 PM EDT	Special Weather Statement	FFC	Heard	26 min
Jul 21, 9:29 PM EDT	Special Weather Statement	FFC	Talbot	31 min
Jul 21, 9:43 PM EDT	Special Weather Statement	FFC	Coweta	32 min
Jul 21, 9:59 PM EDT	Special Weather Statement	FFC	Talbot	31 min
Jul 22, 4:02 AM EDT	Heat Advisory	FFC	Baldwin, Bibb, Bleckley, Chattahoochee, Crawford, Crisp and 34 more	16 hr
Jul 22, 3:45 PM EDT	Special Weather Statement	FFC	Dade	30 min
Jul 22, 4:13 PM EDT	Special Weather Statement	FFC	Catoosa, Walker	32 min
Jul 22, 4:15 PM EDT	Special Weather Statement	FFC	Floyd	30 min
Jul 22, 4:40 PM EDT	Special Weather Statement	FFC	Cobb	35 min
Jul 22, 4:45 PM EDT	Special Weather Statement	FFC	Whitfield	30 min
Jul 22, 5:07 PM EDT	Special Weather Statement	FFC	Murray	38 min
Jul 22, 5:16 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray	44 min
Jul 22, 5:31 PM EDT	Special Weather Statement	FFC	Crisp	29 min
Jul 22, 5:41 PM EDT	Special Weather Statement	FFC	Gordon	34 min
Jul 22, 5:52 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Fannin, Gilmer, Pickens	38 min
Jul 22, 6:13 PM EDT	Special Weather Statement	FFC	Pickens	32 min
Jul 22, 6:17 PM EDT	Special Weather Statement	FFC	Harris, Troup	28 min
Jul 22, 6:32 PM EDT	Special Weather Statement	FFC	Douglas	28 min
Jul 22, 6:59 PM EDT	Special Weather Statement	FFC	Clayton	31 min
Jul 22, 7:25 PM EDT	Special Weather Statement	FFC	Talbot	35 min
Jul 22, 7:32 PM EDT	Special Weather Statement	FFC	Clayton	28 min

Nearby

Special Weather Statements in Georgia, 2015 Every special weather statement in 2015

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.