Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 14, NWS Melbourne, FL

December 20, 2018Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Dec 20, 2018, 11:01 AM EST for Volusia County, Florida. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 20, 2018, 11:01 AM EST (16:01 UTC)
Expired: Dec 20, 2018, 11:30 AM EST
In force: 29 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 90 km from the middle of the area, began a volume at 16:05 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 20, 7:55 AM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 4.0 hours before the alert went out and 68 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: 326 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 778 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

563 
WFUS52 KMLB 201601
TORMLB
FLC127-201630-
/O.NEW.KMLB.TO.W.0014.181220T1601Z-181220T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
1101 AM EST THU DEC 20 2018

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Southeastern Volusia County in east central Florida...

* Until 1130 AM EST.

* At 1100 AM EST, severe thunderstorms capable of producing both 
  tornadoes and straight line wind damage were located 8 miles 
  northwest of Maytown, or 8 miles southwest of Edgewater, moving 
  north 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.

* These dangerous storms will be near...
  New Smyrna Beach around 1110 AM EST.
  Port Orange around 1120 AM EST.

Other locations impacted by this tornadic thunderstorm include Spruce
Creek, New Smyrna Beach, and Edgewater. 

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 2897 8081 2878 8097 2873 8104 2875 8106
      2878 8105 2881 8107 2883 8111 2882 8113
      2881 8112 2880 8114 2879 8114 2879 8117
      2924 8101
TIME...MOT...LOC 1600Z 200DEG 46KT 2891 8103 

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

$$

Rodriguez

3 follow-up statements

233 
WWUS52 KMLB 201611
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
1111 AM EST THU DEC 20 2018

FLC127-201630-
/O.CON.KMLB.TO.W.0014.000000T0000Z-181220T1630Z/
Volusia FL-
1111 AM EST THU DEC 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM EST FOR
SOUTHEASTERN VOLUSIA COUNTY...

At 1109 AM EST, a severe squall line capable of producing both 
tornadoes and straight line wind damage was located near New Smyrna 
Beach, moving north at 50 mph. Several areas of rotation are about 
to approach I-95 from New Smyrna Beach to Edgewater to Oak Hill. 
Motorists should on the Interstate should be extremely careful when 
driving through these storms. This is a dangerous situation.

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.

These dangerous storms will be near...
  New Smyrna Beach around 1110 AM EST.
  Port Orange around 1120 AM EST.

Other locations impacted by this tornadic thunderstorm include Spruce
Creek.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 2897 8081 2876 8100 2888 8114 2924 8101
TIME...MOT...LOC 1609Z 200DEG 46KT 2900 8099 

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

$$

Rodriguez

307 
WWUS52 KMLB 201617
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
1117 AM EST THU DEC 20 2018

FLC127-201630-
/O.CON.KMLB.TO.W.0014.000000T0000Z-181220T1630Z/
Volusia FL-
1117 AM EST THU DEC 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM EST FOR EAST
CENTRAL VOLUSIA COUNTY...

...STRONG ROTATION CROSSING I-95 NEAR EDGEWATER...

TAKE COVER IN EDGEWATER NOW!!

At 1116 AM EST, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Edgewater, moving north 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.

These dangerous storms will be near...
  New Smyrna Beach around 1120 AM EST.

Other locations impacted by this tornadic thunderstorm include New
Smyrna Beach Airport.

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!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 2902 8084 2892 8092 2897 8102 2915 8094
TIME...MOT...LOC 1616Z 200DEG 43KT 2896 8097 

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

$$

Cristaldi

339 
WWUS52 KMLB 201620
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
1120 AM EST THU DEC 20 2018

FLC127-201630-
/O.CON.KMLB.TO.W.0014.000000T0000Z-181220T1630Z/
Volusia FL-
1120 AM EST THU DEC 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM EST FOR EAST
CENTRAL VOLUSIA COUNTY...

At 1120 AM EST, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
New Smyrna Beach, moving north at 55 mph.

TAKE COVER IN NEW SMYRNA BEACH NOW!!!

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.

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!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 2907 8088 2902 8084 2896 8093 2900 8097
      2913 8092
TIME...MOT...LOC 1620Z 199DEG 46KT 2902 8093 

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

$$

Cristaldi

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 3:46 AM EST	Gale Warning	MLB		48 hr
Dec 20, 4:12 AM EST	Beach Hazards Statement	MLB	Volusia	14 hr
Dec 20, 4:15 AM EST	Lake Wind Advisory	MLB	Okeechobee, Orange, Osceola, Seminole, Volusia	14 hr
Dec 20, 8:17 AM EST	Special Weather Statement	MLB	Lake	58 min
Dec 20, 8:23 AM EST	Tornado Warning	MLB	Lake, Orange	22 min
Dec 20, 9:14 AM EST	Special Weather Statement	MLB	Orange, Seminole, Volusia	61 min
Dec 20, 9:25 AM EST	Tornado Warning	MLB	Orange	35 min
Dec 20, 9:37 AM EST	Special Marine Warning	MLB		3 hr
Dec 20, 10:00 AM EST	Areal Flood Advisory	MLB	Lake, Orange, Osceola, Seminole, Volusia	2 hr
Dec 20, 10:18 AM EST	Special Weather Statement	MLB	Orange, Seminole, Volusia	57 min
Dec 20, 10:46 AM EST	Tornado Warning	MLB	Seminole, Volusia	29 min
Dec 20, 11:24 AM EST	Tornado Warning	MLB	Volusia	19 min
Dec 20, 11:35 AM EST	Severe Thunderstorm Warning	MLB	Brevard, Orange, Osceola, Seminole, Volusia	55 min
Dec 20, 12:02 PM EST	Tornado Warning	MLB	Brevard, Seminole, Volusia	28 min
Dec 20, 12:21 PM EST	Areal Flood Advisory	MLB	Brevard, Lake, Orange, Osceola, Seminole, Volusia	3 hr
Dec 20, 12:25 PM EST	Special Marine Warning	MLB		110 min
Dec 20, 12:33 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Seminole, Volusia	27 min
Dec 20, 12:57 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Orange, Osceola	63 min
Dec 20, 1:42 PM EST	Special Weather Statement	MLB	Okeechobee	48 min
Dec 20, 2:02 PM EST	Special Marine Warning	MLB		3 hr
Dec 20, 2:05 PM EST	Special Weather Statement	MLB	Brevard	25 min
Dec 20, 2:19 PM EST	Special Marine Warning	MLB		3 hr
Dec 20, 2:25 PM EST	Severe Thunderstorm Warning	MLB	Brevard	27 min
Dec 20, 2:59 PM EST	Special Weather Statement	MLB	Indian River, Martin, Saint Lucie	61 min

Nearby

Tornado Warnings in Florida, 2018 Every tornado warning in 2018 Tornadoes in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.