Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 72, NWS Jacksonville, FL

June 6, 2017Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Jun 6, 2017, 2:06 PM EDT for Saint Johns County, Florida. It was in force for 24 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: Jun 6, 2017, 2:06 PM EDT (18:06 UTC)
Expired: Jun 6, 2017, 2:30 PM EDT
In force: 24 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 90 km from the middle of the area, began a volume at 18:10 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
Jun 6, 2:10 PM EDT	TORNADO 1	1 Se Dupont Center, FL	DAMAGE SURVEY ONGOING. PRELIMINARY RESULTS OF WEAK EF-1 DAMAGE.
Jun 6, 2:10 PM EDT	TORNADO	1 Se Dupont Center, FL	TREES DOWN ON US 1 JUST SOUTH OF SR 206 SOUTH OF THE FLORIDA FOREST SERVICE TOWER, WITH REPORTS OF TREES BLOCKING 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, 6.1 hours before the alert went out and 91 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: 398 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -49 m²/s²
0-3 km storm-relative helicity: -63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

441 
WFUS52 KJAX 061806
TORJAX
FLC109-061830-
/O.NEW.KJAX.TO.W.0072.170606T1806Z-170606T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
206 PM EDT TUE JUN 6 2017

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  Southeastern St. Johns County in northeastern Florida...

* Until 230 PM EDT
    
* At 206 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Saint Augustine Shores, or 9 miles east of
  Hastings, moving northeast at 30 mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  Saint Augustine Shores around 215 PM EDT. 
  Crescent Beach and Butler Beach around 220 PM EDT. 
  Saint Augustine Beach around 225 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Dupont
Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 2971 8137 2975 8139 2985 8122 2976 8118
TIME...MOT...LOC 1806Z 244DEG 26KT 2973 8135 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SHULER

2 follow-up statements

264 
WWUS52 KJAX 061814
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
214 PM EDT TUE JUN 6 2017

FLC109-061830-
/O.CON.KJAX.TO.W.0072.000000T0000Z-170606T1830Z/
St. Johns FL-
214 PM EDT TUE JUN 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR
SOUTHEASTERN ST. JOHNS COUNTY...
    
At 214 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Butler Beach, or 9 miles south of Saint Augustine,
moving northeast at 30 mph.

HAZARD...Tornado and quarter size hail. 

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 tornadic thunderstorm will remain over mainly rural areas of
southeastern St. Johns County, including the following locations:
Dupont Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 2973 8131 2976 8134 2985 8122 2976 8118
TIME...MOT...LOC 1814Z 244DEG 26KT 2976 8129 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

STRUBLE

408 
WWUS52 KJAX 061827
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
227 PM EDT TUE JUN 6 2017

FLC109-061836-
/O.EXP.KJAX.TO.W.0072.000000T0000Z-170606T1830Z/
St. Johns FL-
227 PM EDT TUE JUN 6 2017

...THE TORNADO WARNING FOR SOUTHEASTERN ST. JOHNS COUNTY WILL EXPIRE
AT 230 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Jacksonville.

LAT...LON 2973 8131 2976 8134 2985 8122 2976 8118
TIME...MOT...LOC 1826Z 244DEG 26KT 2979 8121 

$$

STRUBLE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 10:32 AM EDT	Flood Watch	JAX	Baker, Bradford, Duval, Flagler, Gilchrist, Nassau and 2 more	34 hr
Jun 6, 12:25 PM EDT	Areal Flood Advisory	JAX	Alachua, Gilchrist	3 hr
Jun 6, 12:32 PM EDT	Areal Flood Advisory	JAX	Suwannee	118 min
Jun 6, 1:22 PM EDT	Areal Flood Advisory	JAX	Alachua, Marion	113 min
Jun 6, 1:32 PM EDT	Special Weather Statement	JAX	Saint Johns	43 min
Jun 6, 2:00 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	30 min
Jun 6, 2:09 PM EDT	Special Marine Warning	JAX		66 min
Jun 6, 2:14 PM EDT	Areal Flood Advisory	JAX	Saint Johns	2 hr
Jun 6, 2:58 PM EDT	Areal Flood Advisory	JAX	Putnam	2 hr
Jun 6, 3:29 PM EDT	Areal Flood Advisory	JAX	Alachua, Gilchrist	3 hr

Nearby

Tornado Warnings in Florida, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.