Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

May 13, 2011Dade County, Georgia

NWS Atlanta, GA issued this special weather statement at May 13, 2011, 12:55 PM EDT for Dade County, Georgia. It was in force for 50 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: May 13, 2011, 12:55 PM EDT (16:55 UTC)
Expired: May 13, 2011, 1:45 PM EDT
In force: 50 min
Issued by: NWS Atlanta, GA

County Dade County, GA

The radar

The Northeast Alabama radar (KHTX), 63 km from the middle of the area, began a volume at 16:54 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, 4.9 hours before the alert went out and 177 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: 696 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1122 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 32 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 May 13, 10:02 AM EDT, 2 hours 53 minutes earlier.

Area forecast discussion, May 13, 10:02 AM EDT, 2 hours 53 minutes before

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Hazardous weather outlook, May 13, 4:50 AM EDT, 8 hours 5 minutes before

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In the hours before

Special weather statement, May 13, 12:55 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1255 PM EDT FRI MAY 13 2011

GAZ001-002-011-131745-
1255 PM EDT FRI MAY 13 2011

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN WALKER...
CHATTOOGA AND DADE COUNTIES UNTIL 145 PM EDT...

AT 1252 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM NORTHWEST OF COLE CITY TO WEST OF MENLO...
MOVING EAST AT 20 MPH.

WIND GUSTS OF 40 MPH ARE LIKELY AS THESE STORMS MOVE ACROSS DADE...
WESTERN WALKER... NORTHWEST CHATTOOGA COUNTIES THROUGH 145 PM EDT.
SOME LOCATIONS IN THE PATH OF THESE STORMS INCLUDE MENLO...
CLOUDLAND...COLE CITY...STEPHENSVILLE...TRENTON...HOOKER...
MORGANVILLE...NEW ENGLAND...TRENTON...CENTER POST...WILDWOOD...
RISING FAWN...CEDAR GROVE...COOPER HEIGHTS AND CHATTANOOGA VALLEY.

SIGNIFICANT WEATHER ADVISORIES ARE ISSUED FOR WINDS UP TO 50 MPH...
HAIL LESS THAN THE SIZE OF QUARTERS...OR SIGNIFICANT CLOUD-TO-GROUND
LIGHTNING.

&&

LAT...LON 3499 8561 3499 8531 3498 8530 3469 8536
      3469 8535 3465 8535 3464 8534 3451 8531
      3445 8550 3485 8559
TIME...MOT...LOC 1653Z 251DEG 19KT 3505 8561 3468 8583
          3449 8561

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 1:30 PM EDT	Special Weather Statement	FFC	Catoosa, Walker	45 min
May 13, 1:46 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd	44 min
May 13, 2:09 PM EDT	Special Weather Statement	FFC	Catoosa, Whitfield	51 min
May 13, 2:28 PM EDT	Special Weather Statement	FFC	Floyd, Gordon, Polk	47 min
May 13, 2:48 PM EDT	Special Weather Statement	FFC	Walker	27 min
May 13, 2:49 PM EDT	Special Weather Statement	FFC	Haralson	26 min
May 13, 2:56 PM EDT	Special Weather Statement	FFC	Murray	49 min
May 13, 3:07 PM EDT	Special Weather Statement	FFC	Gilmer, Pickens	38 min
May 13, 3:45 PM EDT	Special Weather Statement	FFC	Fannin	45 min
May 13, 3:55 PM EDT	Special Weather Statement	FFC	Forsyth	50 min
May 13, 4:39 PM EDT	Special Weather Statement	FFC	White	36 min
May 13, 6:10 PM EDT	Special Weather Statement	FFC	Chattahoochee, Muscogee	65 min
May 13, 6:28 PM EDT	Special Weather Statement	FFC	Harris	47 min
May 13, 6:48 PM EDT	Special Weather Statement	FFC	Chattahoochee, Harris, Muscogee	42 min
May 13, 6:58 PM EDT	Severe Thunderstorm Warning	FFC	Harris	20 min
May 13, 7:10 PM EDT	Special Weather Statement	FFC	Talbot	35 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.