Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

July 15, 2015Chattahoochee County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 15, 2015, 8:10 PM EDT for Chattahoochee County, Georgia. It was in force for 35 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 15, 2015, 8:10 PM EDT (00:10 UTC)
Expired: Jul 15, 2015, 8:45 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA

County Chattahoochee County, GA

The radar

The Maxwell AFB radar (KMXX), 99 km from the middle of the area, began a volume at 00:11 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.2 hours before the alert went out and 217 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: 1465 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.3

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 15, 7:16 PM EDT, 54 minutes earlier.

Area forecast discussion, Jul 15, 7:16 PM EDT, 54 minutes before

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Hazardous weather outlook, Jul 15, 6:55 PM EDT, 1 hour 15 minutes before

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In the hours before

Special weather statement, Jul 15, 5:22 PM EDT, 2 hours 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
522 PM EDT WED JUL 15 2015

GAZ089-090-102-152200-
MUSCOGEE GA-STEWART GA-CHATTAHOOCHEE GA-
522 PM EDT WED JUL 15 2015

...SIGNIFICANT WEATHER ADVISORY FOR MUSCOGEE...STEWART AND
CHATTAHOOCHEE COUNTIES UNTIL 600 PM EDT...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LADONIA...OR NEAR PHENIX CITY...MOVING
SOUTHEAST AT 30 MPH.

  HAZARD...WINDS 40 TO 50 MPH AND FREQUENT LIGHTNING.

  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.

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
COLUMBUS...LUMPKIN...CUSSETA...RICHLAND...FORT BENNING/LAWSON ARMY
AIR FLD...BROOKLYN...BENNING HILLS...CHRISTOPHER...CHARLES...
RENFROE...LOUVALE...PROVIDENCE CANYON STATE PARK...SAND HILL...CARTER
ACRES...WESTVILLE...BENNING PARK...MANTA...BATTLE PARK...CUSTER ROAD
TERRACE AND JAMESTOWN/SOUTH FORT BENNING.

LAT...LON 3217 8502 3220 8496 3222 8498 3222 8493
      3225 8492 3226 8489 3230 8494 3233 8501
      3238 8497 3238 8499 3239 8497 3241 8498
      3242 8496 3244 8497 3245 8500 3247 8500
      3231 8466 3205 8465 3200 8487
TIME...MOT...LOC 2121Z 311DEG 25KT 3240 8507

Special weather statement, Jul 15, 5:39 PM EDT, 2 hours 31 minutes before

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Special weather statement, Jul 15, 6:36 PM EDT, 1 hour 34 minutes before

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Local storm report, Jul 15, 7:36 PM EDT, 34 minutes before

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Special weather statement, Jul 15, 7:56 PM EDT, 14 minutes before

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Special weather statement, Jul 15, 8:10 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 15, 8:44 PM EDT	Special Weather Statement	FFC	Webster	31 min
Jul 15, 10:22 PM EDT	Special Weather Statement	FFC	Dooly	53 min
Jul 16, 3:29 AM EDT	Heat Advisory	FFC	Bleckley, Dodge, Emanuel, Glascock, Jefferson, Johnson and 11 more	16 hr
Jul 16, 4:19 PM EDT	Heat Advisory	FFC	Dodge, Emanuel, Johnson, Laurens, Montgomery, Telfair and 3 more	27 hr

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.