Alert archive / Georgia / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 20, NWS Atlanta, GA

February 21, 2005Lumpkin County, Towns County, White County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 21, 2005, 5:03 PM EST for Lumpkin County, Towns County, White County, Georgia. It was in force for 27 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
Feb 21, 2005, 5:03 PM EST (22:03 UTC)
Expired
Feb 21, 2005, 5:30 PM EST
In force
27 min
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

Counties Lumpkin County, GA, Towns County, GA, White County, GA

The radar

The Greer radar (KGSP), 143 km from the middle of the area, began a volume at 22:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 21, 1:45 PM ESTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.1 hours before the alert went out and 169 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2005-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2005-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
88 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
177 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.

000 
WUUS52 KFFC 212203
SVRFFC
GAC187-281-311-212230-
/O.NEW.KFFC.SV.W.0020.050221T2203Z-050221T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
503 PM EST MON FEB 21 2005

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA
  TOWNS COUNTY IN NORTHEAST GEORGIA
  WHITE COUNTY IN NORTHEAST GEORGIA

* UNTIL 530 PM EST

* AT 458 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL. 
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 14 MILES
  NORTH OF SAUTEE TO 23 MILES WEST OF CLEVELAND...AND MOVING EAST AT
  50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROBERTSTOWN...PRESLEY...PORTER SPRINGS...NIMBLEWILL...NACOOCHEE...
  HELEN AND LEAF.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3487 8367 3478 8369 3476 8363 3470 8363
      3451 8369 3457 8418 3464 8409 3463 8403
      3472 8396 3471 8384 3477 8382 3479 8376
      3487 8380 3494 8371 3497 8357 3497 8357

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 11:47 AM ESTSevere Thunderstorm WarningFFCCatoosa, Walker43 min
Feb 21, 12:01 PM ESTSevere Thunderstorm WarningFFCCobb, Paulding44 min
Feb 21, 12:32 PM ESTSevere Thunderstorm WarningFFCFannin, Gilmer28 min
Feb 21, 12:52 PM ESTSevere Thunderstorm WarningFFCCobb, Paulding23 min
Feb 21, 1:07 PM ESTSevere Thunderstorm WarningFFCGwinnett23 min
Feb 21, 1:15 PM ESTSevere Thunderstorm WarningFFCDeKalb, Fulton30 min
Feb 21, 1:28 PM ESTSevere Thunderstorm WarningFFCBarrow, Gwinnett, Walton47 min
Feb 21, 1:45 PM ESTSevere Thunderstorm WarningFFCClarke, Oconee30 min
Feb 21, 2:29 PM ESTSevere Thunderstorm WarningFFCOglethorpe, Wilkes46 min
Feb 21, 4:08 PM ESTSevere Thunderstorm WarningFFCMurray37 min
Feb 21, 4:19 PM ESTSevere Thunderstorm WarningFFCFannin, Gilmer41 min
Feb 21, 4:26 PM ESTSevere Thunderstorm WarningFFCChattooga, Walker49 min
Feb 21, 4:51 PM ESTSevere Thunderstorm WarningFFCUnion39 min
Feb 21, 4:58 PM ESTSevere Thunderstorm WarningFFCFloyd, Gordon47 min
Feb 21, 5:11 PM ESTSevere Thunderstorm WarningFFCDawson, Pickens34 min
Feb 21, 5:15 PM ESTSevere Thunderstorm WarningFFCChattooga30 min
Feb 21, 5:20 PM ESTSevere Thunderstorm WarningFFCBartow40 min
Feb 21, 5:34 PM ESTSevere Thunderstorm WarningFFCFloyd41 min
Feb 21, 5:42 PM ESTSevere Thunderstorm WarningFFCCherokee48 min
Feb 21, 6:08 PM ESTSevere Thunderstorm WarningFFCForsyth, Fulton52 min
Feb 21, 6:14 PM ESTSevere Thunderstorm WarningFFCBartow, Paulding46 min
Feb 21, 6:28 PM ESTSevere Thunderstorm WarningFFCGwinnett, Hall32 min
Feb 21, 6:30 PM ESTSevere Thunderstorm WarningFFCCobb30 min
Feb 21, 6:34 PM ESTSevere Thunderstorm WarningFFCHancock41 min
Feb 21, 6:39 PM ESTSevere Thunderstorm WarningFFCBaldwin, Washington51 min
Feb 21, 6:42 PM ESTSevere Thunderstorm WarningFFCBarrow48 min
Feb 21, 6:53 PM ESTSevere Thunderstorm WarningFFCDeKalb, Gwinnett52 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2005Every severe thunderstorm warning in 2005

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.