Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 299, NWS Atlanta, GA

July 20, 2007Houston County, Peach County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 20, 2007, 3:29 PM EDT for Houston County, Peach County, Georgia. It was in force for 46 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 20, 2007, 3:29 PM EDT (19:29 UTC)
Expired: Jul 20, 2007, 4:15 PM EDT
In force: 46 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

Counties Houston County, GA, Peach County, GA

The radar

The Robins AFB radar (KJGX), 40 km from the middle of the area, began a volume at 19:28 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.

What was reported inside it

Time	Report	Where	Remark
Jul 20, 3:30 PM EDT	TSTM WND DMG	Warner Robins, GA	NUMEROUS TREES AND POWERLINES DOWN COUNTYWIDE.
Jul 20, 3:40 PM EDT	TSTM WND DMG	Fort Valley, GA	SEVERAL TREES AND POWER LINES DOWN ACROSS THE COUNTY.
Jul 20, 3:42 PM EDT	TSTM WND GST 62	2 Ne Warner Robins, GA	OBSERVED BY WEATHER OBSERVER AT ROBINS AFB.
Jul 20, 3:45 PM EDT	TSTM WND DMG	Bonaire, GA	LARGE LIMBS TORN FROM PECAN AND PINE TREES. 800 LB OUTDOOR PATIO BLOWN FROM DECK.
Jul 20, 3:45 PM EDT	TSTM WND GST 55	Bonaire, GA
Jul 20, 3:50 PM EDT	TSTM WND DMG	Warner Robins, GA	ALONG HWY 96...A TRANSFORMER SUSTAINED DAMAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 20, 1:47 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.5 hours before the alert went out and 117 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: 652 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 42 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 201929
SVRFFC
GAC153-225-202015-
/O.NEW.KFFC.SV.W.0299.070720T1929Z-070720T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
329 PM EDT FRI JUL 20 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOUSTON COUNTY IN CENTRAL GEORGIA
  PEACH COUNTY IN CENTRAL GEORGIA

* UNTIL 415 PM EDT

* AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED 8 MILES WEST
  OF FORT VALLEY...MOVING SOUTHEAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BYRON...POWERSVILLE...CENTERVILLE...WARNER ROBINS...ROBINS AFB...
  PERRY...BONAIRE...HENDERSON AND HAYNEVILLE.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR SOUTHEASTERN GEORGIA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL 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 3269 8375 3253 8406 3245 8383 3230 8383
      3243 8348 3264 8354

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 12:33 PM EDT	Severe Thunderstorm Warning	FFC	Haralson	57 min
Jul 20, 12:47 PM EDT	Severe Thunderstorm Warning	FFC	Carroll	43 min
Jul 20, 1:22 PM EDT	Severe Thunderstorm Warning	FFC	Heard	23 min
Jul 20, 1:26 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta	64 min
Jul 20, 1:36 PM EDT	Severe Thunderstorm Warning	FFC	Douglas, Fulton	39 min
Jul 20, 1:40 PM EDT	Severe Thunderstorm Warning	FFC	Fayette, Spalding	65 min
Jul 20, 1:44 PM EDT	Severe Thunderstorm Warning	FFC	Heard, Meriwether, Troup	61 min
Jul 20, 2:06 PM EDT	Severe Thunderstorm Warning	FFC	Pike	54 min
Jul 20, 2:08 PM EDT	Severe Thunderstorm Warning	FFC	Pike	52 min
Jul 20, 2:27 PM EDT	Severe Thunderstorm Warning	FFC	Lamar, Upson	48 min
Jul 20, 2:41 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether	34 min
Jul 20, 2:58 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	47 min
Jul 20, 3:00 PM EDT	Severe Thunderstorm Warning	FFC	Crawford, Talbot, Taylor	60 min
Jul 20, 3:18 PM EDT	Severe Thunderstorm Warning	FFC	Bibb	57 min
Jul 20, 3:39 PM EDT	Severe Thunderstorm Warning	FFC	Twiggs	51 min
Jul 20, 3:55 PM EDT	Severe Thunderstorm Warning	FFC	Wilkinson	50 min
Jul 20, 4:09 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Laurens	66 min
Jul 20, 4:20 PM EDT	Severe Thunderstorm Warning	FFC	Dodge	55 min
Jul 20, 4:26 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Washington	64 min
Jul 20, 4:50 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery, Treutlen, Wheeler	55 min
Jul 20, 4:58 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	62 min
Jul 20, 5:10 PM EDT	Severe Thunderstorm Warning	FFC	Dodge, Wilcox	21 min
Jul 20, 5:21 PM EDT	Severe Thunderstorm Warning	FFC	Toombs	39 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.