Alert archive / Florida / Tornado Warnings in 2016

Tornado Warning 13, NWS Jacksonville, FL

August 4, 2016Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this tornado warning at Aug 4, 2016, 1:57 PM EDT for Nassau County, Florida; Camden County, Georgia. It was in force for 12 min. 5 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: Aug 4, 2016, 1:57 PM EDT (17:57 UTC)
Expired: Aug 4, 2016, 2:09 PM EDT
In force: 12 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 27 km from the middle of the area, began a volume at 18:01 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
Aug 4, 2:00 PM EDT	TORNADO	1 Se Yulee, FL	NASSAU COUNTY EMERGENCY MANAGEMENT REPORTS A LARGE TREE DOWNED OVER A HOME ALONG RIVERWOOD DRIVE.
Aug 4, 2:00 PM EDT	TORNADO	2 Sse Yulee, FL	NASSAU COUNTY EMERGENCY MANAGEMENT REPORTS TORNADO DAMAGE TO A RESIDENCE ALONG MEADOWOOD DRIVE.
Aug 4, 2:00 PM EDT	TORNADO	5 Ssw St. Marys, FL	NASSAU COUNTY EMERGENCY MANAGEMENT REPORTS A SEMI-TRACTOR TRAILER TURNED OVER ONTO ANOTHER VEHICLE ALONG STATE ROAD 200.
Aug 4, 2:00 PM EDT	TORNADO	5 Ssw St. Marys, FL	NASSAU COUNTY EMERGENCY MANAGEMENT REPORTS TREE DOWNED AND A PASSENGER TRAPPED IN A VEHICLE ALONG BOBBY DRIVE NEAR PAGES DAIRY ROAD.
Aug 4, 2:05 PM EDT	TORNADO	5 Ssw St. Marys, FL	NASSAU COUNTY EMERGENCY MANAGEMENT REPORTS A LARGE TREE DOWNED ALONG GENE LASSERE ROAD THAT IS OBSTRUCTING THE ROADWAY IN BOTH DIRECTIONS...ALONG WITH WATER COMPLETELY COVERING THE ROADWAY.

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, 6.0 hours before the alert went out and 25 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: 804 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: -64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

131 
WFUS52 KJAX 041757
TORJAX
FLC089-GAC039-041830-
/O.NEW.KJAX.TO.W.0013.160804T1757Z-160804T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
157 PM EDT THU AUG 4 2016

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN NASSAU COUNTY IN NORTHEASTERN FLORIDA...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHEASTERN GEORGIA...

* UNTIL 230 PM EDT
    
* AT 157 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER YULEE...OR NEAR ST. MARYS...MOVING NORTH
  AT 15 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
           DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  FERNANDINA BEACH AROUND 225 PM EDT. 
  ST. MARYS AND KINGS BAY BASE AROUND 230 PM EDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN
A MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3056 8153 3061 8163 3080 8161 3076 8142
      3073 8142
TIME...MOT...LOC 1757Z 193DEG 12KT 3063 8156 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

HESS

1 follow-up statement

462 
WWUS52 KJAX 041809
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
209 PM EDT THU AUG 4 2016

FLC089-GAC039-041819-
/O.CAN.KJAX.TO.W.0013.000000T0000Z-160804T1830Z/
NASSAU FL-CAMDEN GA-
209 PM EDT THU AUG 4 2016

...THE TORNADO WARNING FOR NORTHEASTERN NASSAU AND SOUTHEASTERN
CAMDEN COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE...THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS AND
HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
JACKSONVILLE.

LAT...LON 3056 8153 3061 8163 3080 8161 3076 8142
      3073 8142
TIME...MOT...LOC 1807Z 193DEG 12KT 3067 8155 

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 9:50 AM EDT	Special Weather Statement	JAX	Marion	40 min
Aug 4, 12:38 PM EDT	Areal Flood Advisory	JAX	Union	67 min
Aug 4, 1:27 PM EDT	Special Weather Statement	JAX	Nassau	48 min
Aug 4, 1:37 PM EDT	Areal Flood Advisory	JAX	Duval, Nassau	113 min
Aug 4, 1:51 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	24 min
Aug 4, 2:02 PM EDT	Special Marine Warning	JAX		58 min
Aug 4, 2:29 PM EDT	Special Weather Statement	JAX	Flagler	31 min
Aug 4, 2:32 PM EDT	Areal Flood Warning	JAX	Nassau	88 min
Aug 4, 2:58 PM EDT	Special Weather Statement	JAX	Flagler	32 min
Aug 3, 10:08 PM EDT	Areal Flood Advisory	JAX	Appling, Jeff Davis	52 min
Aug 3, 10:11 PM EDT	Special Weather Statement	JAX	Appling	34 min
Aug 4, 1:21 PM EDT	Special Weather Statement	JAX	Glynn	39 min
Aug 4, 2:14 PM EDT	Special Weather Statement	JAX	Camden	31 min
Aug 4, 3:02 PM EDT	Special Weather Statement	JAX	Jeff Davis	28 min
Aug 4, 3:27 PM EDT	Areal Flood Advisory	JAX	Appling, Jeff Davis	2 hr
Aug 4, 3:35 PM EDT	Special Weather Statement	JAX	Coffee	40 min
Aug 4, 5:00 PM EDT	Areal Flood Advisory	JAX	Appling, Bacon	90 min

Nearby

Tornado Warnings in Florida, 2016 Tornado Warnings in Georgia, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.