Alert archive / Florida / Tornado Warnings in 2019

Tornado Warning 21, NWS Jacksonville, FL

December 14, 2019Putnam County, Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Dec 14, 2019, 4:40 AM EST for Putnam County, Saint Johns County, Florida. It was in force for 35 min. 3 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: Dec 14, 2019, 4:40 AM EST (09:40 UTC)
Expired: Dec 14, 2019, 5:15 AM EST
In force: 35 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 79 km from the middle of the area, began a volume at 09:40 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
Dec 14, 5:05 AM EST	TORNADO	Elkton, FL	TRAINED STORM SPOTTER REPORTED ABOUT A 50 YARD TORNADO ON THE GROUND NEAR STATE ROAD 207 AND COUNTY ROAD 305 IN ELKTON. TREE DEBRIS, SHINGLES AND TIN ROOF REPORTED IN TREES AND ACROSS THE GROUND.
Dec 14, 5:06 AM EST	TSTM WND DMG	N Elkton, FL	POSSIBLE TORNADO DAMAGE. KITCHEN AND BATH STORE SUSTAINED ROOF DAMAGE AS WELL AS DAMAGE TO THEIR SUPPLIES INCLUDING SOLID SURFACE COUNTERTOPS.
Dec 14, 5:20 AM EST	FUNNEL CLOUD	5 Wsw Saint Augustine B, FL	FUNNEL CLOUD WAS REPORTED OVER 762 GILDA DRIVE.

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 00:00Z, 9.7 hours before the alert went out and 81 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: 651 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

646 
WFUS52 KJAX 140940
TORJAX
FLC107-109-141015-
/O.NEW.KJAX.TO.W.0021.191214T0940Z-191214T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
440 AM EST Sat Dec 14 2019

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  Southern St. Johns County in northeastern Florida...
  Northeastern Putnam County in northeastern Florida...

* Until 515 AM EST.
    
* At 440 AM EST, a severe thunderstorm capable of producing a tornado
  was located over Bardin, or near Palatka, moving east at 50 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...
  Orange Mills around 445 AM EST.
  Hastings and Federal Point around 450 AM EST.
  Saint Augustine, Butler Beach, Saint Augustine South, Saint 
  Augustine Shores and Crescent Beach around 510 AM EST.
  Saint Augustine Beach around 515 AM EST.

Other locations impacted by this tornadic thunderstorm include Spuds,
Anastasia, Dupont Center, Elkton and Bakersville.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2968 8119 2964 8170 2979 8173 2984 8164
      2984 8158 2986 8159 3002 8130
TIME...MOT...LOC 0940Z 251DEG 43KT 2973 8168 

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

$$

HESS

1 follow-up statement

001 
WWUS52 KJAX 140959
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
459 AM EST Sat Dec 14 2019

FLC107-141009-
/O.CAN.KJAX.TO.W.0021.000000T0000Z-191214T1015Z/
Putnam FL-
459 AM EST Sat Dec 14 2019

...THE TORNADO WARNING FOR NORTHEASTERN PUTNAM COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 AM EST for
northeastern Florida.

LAT...LON 2970 8153 2976 8153 2977 8154 2983 8156
      2998 8129 2992 8126 2971 8120
TIME...MOT...LOC 0959Z 252DEG 29KT 2978 8150 

$$

FLC109-141015-
/O.CON.KJAX.TO.W.0021.000000T0000Z-191214T1015Z/
St. Johns FL-
459 AM EST Sat Dec 14 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 AM EST FOR
SOUTHEASTERN ST. JOHNS COUNTY...
    
At 459 AM EST, a severe thunderstorm capable of producing a tornado
was located near Federal Point, or near Hastings, moving east at 35
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...
  Saint Augustine Shores and Saint Augustine South around 520 AM 
  EST.
  Saint Augustine, Saint Augustine Beach, Butler Beach and Crescent 
  Beach around 525 AM EST.

Other locations impacted by this tornadic thunderstorm include Spuds,
Anastasia, Dupont Center and Elkton.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2970 8153 2976 8153 2977 8154 2983 8156
      2998 8129 2992 8126 2971 8120
TIME...MOT...LOC 0959Z 252DEG 29KT 2978 8150 

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

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 13, 8:15 PM EST	Dense Fog Advisory	JAX	Baker, Bradford, Duval, Nassau, Suwannee, Union	6 hr
Dec 13, 8:22 PM EST	Marine Dense Fog Advisory	JAX		7 hr
Dec 14, 1:29 AM EST	Special Weather Statement	JAX	Suwannee	46 min
Dec 14, 2:39 AM EST	Special Weather Statement	JAX	Alachua, Bradford, Gilchrist	66 min
Dec 14, 3:40 AM EST	Special Weather Statement	JAX	Alachua, Marion, Putnam	65 min
Dec 14, 3:43 AM EST	Tornado Warning	JAX	Alachua, Marion, Putnam	32 min
Dec 14, 4:08 AM EST	Tornado Warning	JAX	Alachua, Putnam	37 min
Dec 14, 4:35 AM EST	Special Marine Warning	JAX		115 min
Dec 14, 4:43 AM EST	Special Weather Statement	JAX	Flagler, Putnam	47 min
Dec 14, 4:57 AM EST	Severe Thunderstorm Warning	JAX	Flagler, Marion, Putnam	48 min
Dec 14, 5:14 AM EST	Tornado Warning	JAX	Saint Johns	16 min
Dec 14, 5:17 AM EST	Tornado Warning	JAX	Flagler	28 min

Nearby

Tornado Warnings in Florida, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.