Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

July 9, 2015Twiggs County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 9, 2015, 7:45 PM EDT for Twiggs County, Georgia. It was in force for 30 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 9, 2015, 7:45 PM EDT (23:45 UTC)
Expired: Jul 9, 2015, 8:15 PM EDT
In force: 30 min
Issued by: NWS Atlanta, GA

County Twiggs County, GA

The radar

The Robins AFB radar (KJGX), 18 km from the middle of the area, began a volume at 23:48 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, 11.8 hours before the alert went out and 130 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: 246 J/kg
Mixed-layer CIN: -153 J/kg
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 11 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 9, 7:30 PM EDT, 15 minutes earlier.

Area forecast discussion, Jul 9, 7:30 PM EDT, 15 minutes before

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Hazardous weather outlook, Jul 9, 12:46 PM EDT, 6 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1246 PM EDT THU JUL 9 2015

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-101700-
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-
1246 PM EDT THU JUL 9 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...
ISOLATED SHOWERS AND THUNDERSTORMS ARE POSSIBLE. ANY STORMS THAT
DEVELOP WILL BE CAPABLE OF PRODUCING STRONG WINDS AND FREQUENT
CLOUD TO GROUND LIGHTNING ALONG WITH HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
CONTINUED LOW CHANCES OF AFTERNOON SHOWERS AND THUNDERSTORMS
THROUGH THE END OF THE WORK WEEK AS HIGH PRESSURE SETTLES OVER
THE DEEP SOUTH. ANY STORMS THAT DO FORM WILL BE CAPABLE OF
PRODUCING STRONG WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING
ALONG WITH HEAVY RAIN. TEMPERATURES WILL BE INCREASING WITH MID TO
UPPER 90S FOR PORTIONS OF EAST CENTRAL GEORGIA THROUGH THE
WEEKEND AND HEAT INDICES NEAR OR SLIGHTLY ABOVE 100 DEGREES.

A MORE ACTIVE THUNDERSTORM PATTERN LOOKS TO RETURN BY LATE
SATURDAY INTO EARLY NEXT WEEK WITH MORE WIDESPREAD PRECIPITATION
CHANCES.

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

In the hours before

Special weather statement, Jul 9, 5:40 PM EDT, 2 hours 5 minutes before

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Special weather statement, Jul 9, 5:46 PM EDT, 1 hour 59 minutes before

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Special weather statement, Jul 9, 6:07 PM EDT, 1 hour 38 minutes before

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Special weather statement, Jul 9, 6:23 PM EDT, 1 hour 22 minutes before

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Special weather statement, Jul 9, 6:31 PM EDT, 1 hour 14 minutes before

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Special weather statement, Jul 9, 7:45 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 9, 4:49 PM EDT	Special Weather Statement	FFC	Talbot	26 min
Jul 9, 5:08 PM EDT	Special Weather Statement	FFC	Johnson	37 min
Jul 9, 5:40 PM EDT	Special Weather Statement	FFC	Bibb	35 min
Jul 9, 5:46 PM EDT	Special Weather Statement	FFC	Webster	29 min
Jul 9, 6:07 PM EDT	Special Weather Statement	FFC	Schley	23 min
Jul 9, 6:23 PM EDT	Special Weather Statement	FFC	Wilkinson	37 min
Jul 9, 6:31 PM EDT	Special Weather Statement	FFC	Schley	29 min
Jul 9, 7:53 PM EDT	Special Weather Statement	FFC	Monroe	37 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.