Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 49, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 21, 2011, 5:39 PM EDT for Glynn County, Wayne County, Georgia. It was in force for 36 min. 1 report 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
- Apr 21, 2011, 5:39 PM EDT (21:39 UTC)
- Expired
- Apr 21, 2011, 6:15 PM EDT
- In force
- 36 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Glynn County, GA, Wayne County, GA
The radar
The Jacksonville radar (KJAX), 96 km from the middle of the area, began a volume at 21:40 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 |
|---|---|---|---|
| Apr 21, 5:45 PM EDT | HAIL 1.75 | Everett, GA | GOLF BALL SIZE HAIL REPORTED IN EVERETT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 9.7 hours before the alert went out and 94 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.
- Mixed-layer CAPE
- 812 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1139 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
097
WUUS52 KJAX 212139
SVRJAX
GAC127-305-212215-
/O.NEW.KJAX.SV.W.0049.110421T2139Z-110421T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
539 PM EDT THU APR 21 2011
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST GEORGIA
NORTHERN GLYNN COUNTY IN SOUTHEAST GEORGIA
* UNTIL 615 PM EDT
* AT 539 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR EVERETT...OR 11 MILES WEST OF DARIEN...AND MOVING
EAST AT 5 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
THALMANN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.
&&
LAT...LON 3115 8165 3142 8176 3148 8161 3145 8161
3143 8160 3134 8147 3134 8144 3131 8142
3131 8139 3132 8138 3132 8136
TIME...MOT...LOC 2139Z 335DEG 4KT 3137 8162
$$
CARROLL1 follow-up statement
230
WWUS52 KJAX 212158
SVSJAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
558 PM EDT THU APR 21 2011
GAC127-305-212215-
/O.CON.KJAX.SV.W.0049.000000T0000Z-110421T2215Z/
WAYNE GA-GLYNN GA-
558 PM EDT THU APR 21 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHERN GLYNN AND SOUTHEASTERN WAYNE COUNTIES...
AT 556 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM
PRODUCING GOLF BALL SIZE HAIL...AND CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR EVERETT...OR
11 MILES WEST OF DARIEN...MOVING SOUTHEAST AT 5 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
THALMANN AND BOYS ESTATE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
HAIL UP TO THE SIZE OF GOLF BALLS HAS BEEN REPORTED IN EVERETT WITH
THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE
ACTION TO PROTECT LIFE AND PROPERTY.
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.
&&
LAT...LON 3115 8165 3142 8176 3148 8161 3145 8161
3143 8160 3134 8147 3134 8144 3131 8142
3131 8139 3132 8138 3132 8136
TIME...MOT...LOC 2156Z 335DEG 4KT 3135 8161
$$
CARROLLThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 5:27 PM EDT | Special Weather Statement | JAX | Glynn | 48 min |
| Apr 21, 5:52 PM EDT | Special Weather Statement | JAX | Brantley | 38 min |
| Apr 21, 6:04 PM EDT | Areal Flood Advisory | JAX | Glynn, Wayne | 86 min |
| Apr 21, 6:17 PM EDT | Severe Thunderstorm Warning | JAX | Brantley, Glynn, Wayne | 43 min |
| Apr 21, 6:51 PM EDT | Special Weather Statement | JAX | Brantley | 39 min |
| Apr 21, 6:58 PM EDT | Special Weather Statement | JAX | Brantley | 47 min |
| Apr 21, 7:00 PM EDT | Severe Thunderstorm Warning | JAX | Brantley, Camden, Glynn | 45 min |
| Apr 21, 7:02 PM EDT | Severe Thunderstorm Warning | JAX | Brantley, Camden, Charlton | 43 min |
| Apr 21, 7:45 PM EDT | Severe Thunderstorm Warning | JAX | Camden, Charlton | 21 min |
| Apr 21, 7:48 PM EDT | Special Weather Statement | JAX | Wayne | 42 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.