Alert archive / Florida / Tornado Warnings in 2018
Tornado Warning 13, NWS Melbourne, FL
NWS Melbourne, FL issued this tornado warning at Dec 20, 2018, 10:46 AM EST for Seminole County, 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, 10:46 AM EST (15:46 UTC)
- Expired
- Dec 20, 2018, 11:15 AM EST
- In force
- 29 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 85 km from the middle of the area, began a volume at 15:46 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, 3.8 hours before the alert went out and 66 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
- 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
The text
As transmitted.
827
WFUS52 KMLB 201546
TORMLB
FLC117-127-201615-
/O.NEW.KMLB.TO.W.0013.181220T1546Z-181220T1615Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
1046 AM EST THU DEC 20 2018
The National Weather Service in Melbourne has issued a
* Tornado Warning for...
Northeastern Seminole County in east central Florida...
Southeastern Volusia County in east central Florida...
* Until 1115 AM EST.
* At 1046 AM EST, severe thunderstorms capable of producing both
tornadoes and straight line wind damage were located over Geneva,
moving northeast at 45 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 tornadic thunderstorm will remain over mainly rural areas of
northeastern Seminole and southeastern Volusia Counties, including
the following locations... Lake Harney.
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 2868 8109 2871 8119 2897 8111 2890 8088
TIME...MOT...LOC 1546Z 209DEG 40KT 2875 8111
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Rodriguez1 follow-up statement
665
WWUS52 KMLB 201605
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
1105 AM EST THU DEC 20 2018
FLC117-201614-
/O.CAN.KMLB.TO.W.0013.000000T0000Z-181220T1615Z/
Seminole FL-
1105 AM EST THU DEC 20 2018
...THE TORNADO WARNING FOR NORTHEASTERN SEMINOLE COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 400 PM EST for east central
Florida.
LAT...LON 2877 8101 2881 8106 2887 8103 2895 8104
2890 8088
TIME...MOT...LOC 1604Z 209DEG 40KT 2893 8100
$$
FLC127-201615-
/O.CON.KMLB.TO.W.0013.000000T0000Z-181220T1615Z/
Volusia FL-
1105 AM EST THU DEC 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM EST FOR
SOUTHEASTERN VOLUSIA COUNTY...
At 1104 AM EST, a severe squall line capable of producing both
tornadoes and straight line wind damage was located from near
Edgewater to Farmton, moving northeast at 45 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Volusia County.
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 2877 8101 2881 8106 2887 8103 2895 8104
2890 8088
TIME...MOT...LOC 1604Z 209DEG 40KT 2893 8100
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
CristaldiThe 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, 11:01 AM EST | Tornado Warning | MLB | 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, 2018Every tornado warning in 2018Tornadoes 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.