Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 166, NWS Jacksonville, FL

July 17, 2012Atkinson County, Coffee County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 17, 2012, 2:25 PM EDT for Atkinson County, Coffee County, Georgia. It was in force for 50 min. 2 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 17, 2012, 2:25 PM EDT (18:25 UTC)
Expired: Jul 17, 2012, 3:15 PM EDT
In force: 50 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Atkinson County, GA, Coffee County, GA

What was reported inside it

Time	Report	Where	Remark
Jul 17, 2:25 PM EDT	TSTM WND DMG	Ambrose, GA	TREES DOWN NEAR THE TOWN CENTER OF AMBROSE
Jul 17, 2:30 PM EDT	TSTM WND DMG	Nicholls, GA	LARGE TREES DOWN ON 2 HOMES ON BIRMINGHAM AVENUE IN NICHOLLS. IN ADDITION...QUARTER SIZED HAIL WAS REPORTED.

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 17, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 6.4 hours before the alert went out and 163 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: 1223 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 2 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.

525 
WUUS52 KJAX 171825
SVRJAX
GAC003-069-171915-
/O.NEW.KJAX.SV.W.0166.120717T1825Z-120717T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
225 PM EDT TUE JUL 17 2012

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ATKINSON COUNTY IN SOUTHEAST GEORGIA
  COFFEE COUNTY IN SOUTHEAST GEORGIA

* UNTIL 315 PM EDT

* AT 224 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE   
  TRACKING SEVERAL SEVERE THUNDERSTORMS ACROSS CENTRAL AND SOUTHERN
  COFFEE COUNTY INTO NORTHWEST ATKINSON COUNTY. THE STORMS MAY 
  PRODUCE QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH
  AS THEY MOVE SLOWLY SOUTHWEST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  DOUGLAS AND WILLACOOCHEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHERN FLORIDA AND SOUTHEAST GEORGIA.

&&

LAT...LON 3152 8309 3157 8306 3161 8306 3167 8300
      3168 8297 3156 8264 3148 8261 3147 8263
      3132 8273 3132 8306 3136 8311 3140 8314
      3146 8316
TIME...MOT...LOC 1824Z 027DEG 4KT 3149 8280

$$

WOLF

2 follow-up statements

057 
WWUS52 KJAX 171835
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
235 PM EDT TUE JUL 17 2012

GAC003-069-171915-
/O.CON.KJAX.SV.W.0166.000000T0000Z-120717T1915Z/
ATKINSON GA-COFFEE GA-
235 PM EDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR COFFEE AND NORTHERN ATKINSON COUNTIES...

AT 233 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
TRACK MULTIPLE SEVERE THUNDERSTORMS ACROSS SOUTHERN COFFEE COUNTY...
MOVING SOUTH AT 10 MPH. THESE STORMS HAVE A HISTORY OF DAMAGING 
WINDS AND HAIL. NICKEL HAIL AND DOWNED TREES HAVE BEEN REPORTED NEAR
THE TOWN OF NICHOLLS.  RADAR INDICATES POTENTIAL FOR SIGNIFICANT
WIND DAMAGE ALONG THE LEADING EDGE OF THESE STORMS OVER SOUTHERN
COFFEE COUNTY...SPREADING ACROSS NORTHERN ATKINSON COUNTY THROUGH
315 PM. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLACOOCHEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHERN FLORIDA AND SOUTHEAST GEORGIA.

&&

LAT...LON 3152 8309 3157 8306 3161 8306 3167 8300
      3168 8297 3156 8264 3148 8261 3147 8263
      3132 8273 3132 8306 3136 8311 3140 8314
      3146 8316
TIME...MOT...LOC 1833Z 027DEG 4KT 3148 8281

$$

409 
WWUS52 KJAX 171845
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
245 PM EDT TUE JUL 17 2012

GAC003-069-171915-
/O.CON.KJAX.SV.W.0166.000000T0000Z-120717T1915Z/
ATKINSON GA-COFFEE GA-
245 PM EDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHERN COFFEE AND NORTHERN ATKINSON COUNTIES...

AT 245 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED 
TO TRACK A CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORMS WERE CENTERED 8 
MILES NORTHEAST OF WILLACOOCHEE...MOVING SOUTHWEST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLACOOCHEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHERN FLORIDA AND SOUTHEAST GEORGIA.

&&

LAT...LON 3152 8309 3157 8306 3163 8303 3162 8299
      3149 8299 3147 8280 3147 8263 3132 8273
      3132 8306 3136 8311 3140 8314 3146 8316
TIME...MOT...LOC 1845Z 027DEG 4KT 3140 8293

$$

WOLF

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 12:56 PM EDT	Special Weather Statement	JAX	Jeff Davis	49 min
Jul 17, 1:10 PM EDT	Special Weather Statement	JAX	Appling	50 min
Jul 17, 1:25 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Jeff Davis	39 min
Jul 17, 1:37 PM EDT	Special Weather Statement	JAX	Coffee	38 min
Jul 17, 1:41 PM EDT	Severe Thunderstorm Warning	JAX	Coffee	49 min
Jul 17, 2:53 PM EDT	Special Weather Statement	JAX	Atkinson	37 min
Jul 17, 3:20 PM EDT	Special Weather Statement	JAX	Clinch	40 min
Jul 17, 4:09 PM EDT	Special Weather Statement	JAX	Camden	36 min
Jul 17, 4:51 PM EDT	Special Weather Statement	JAX	Charlton	24 min
Jul 17, 4:55 PM EDT	Special Weather Statement	JAX	Brantley	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.