Alert archive / Florida / Tornado Warnings in 2018
Tornado Warning 11, NWS Melbourne, FL
NWS Melbourne, FL issued this tornado warning at Dec 20, 2018, 8:23 AM EST for Lake County, Orange County, Florida. It was in force for 22 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, 8:23 AM EST (13:23 UTC)
- Expired
- Dec 20, 2018, 8:45 AM EST
- In force
- 22 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Lake County, FL, Orange County, FL
The radar
The Melbourne radar (KMLB), 111 km from the middle of the area, began a volume at 13:23 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, 1.4 hours before the alert went out and 107 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.
506
WFUS52 KMLB 201323
TORMLB
FLC069-095-201345-
/O.NEW.KMLB.TO.W.0011.181220T1323Z-181220T1345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
823 AM EST THU DEC 20 2018
The National Weather Service in Melbourne has issued a
* Tornado Warning for...
Southern Lake County in east central Florida...
Northwestern Orange County in east central Florida...
* Until 845 AM EST.
* At 822 AM EST, severe thunderstorms capable of producing both
tornadoes and straight line wind damage were located over
Groveland, 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.
* These dangerous storms will be near...
Ferndale around 830 AM EST.
Lake Apopka around 840 AM EST.
Other locations impacted by this tornadic thunderstorm include
Minneola.
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 2892 8155 2876 8141 2872 8143 2871 8144
2871 8146 2866 8146 2845 8183 2859 8195
TIME...MOT...LOC 1322Z 232DEG 37KT 2857 8183
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Cristaldi2 follow-up statements
102
WWUS52 KMLB 201335
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
835 AM EST THU DEC 20 2018
FLC069-095-201345-
/O.CON.KMLB.TO.W.0011.000000T0000Z-181220T1345Z/
Lake FL-Orange FL-
835 AM EST THU DEC 20 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM EST FOR SOUTHERN
LAKE AND NORTHWESTERN ORANGE COUNTIES...
At 833 AM EST, a squall line capable of producing brief tornadoes
and straight line wind damage was located over Ferndale, moving
northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southern Lake and northwestern Orange Counties, including the
following locations... Minneola and Lake Apopka.
Other storms slightly farther south are showing signs of rotation.
Additional warnings are likely.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 2892 8155 2876 8141 2872 8143 2871 8144
2871 8146 2866 8146 2845 8183 2867 8184
TIME...MOT...LOC 1333Z 232DEG 37KT 2865 8172
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Cristaldi387
WWUS52 KMLB 201344
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
844 AM EST THU DEC 20 2018
FLC069-095-201352-
/O.EXP.KMLB.TO.W.0011.000000T0000Z-181220T1345Z/
Lake FL-Orange FL-
844 AM EST THU DEC 20 2018
...THE TORNADO WARNING FOR SOUTHERN LAKE AND NORTHWESTERN ORANGE
COUNTIES WILL EXPIRE AT 845 AM EST...
The tornadic thunderstorm which prompted the warning has weakened
for now, therefore, the warning will be allowed to expire. However
gusty winds are still possible with the squall line that is moving
through the area, and embedded storms could rapidly acquire
rotation. Don't let your guard down today!
A Tornado Watch remains in effect until 400 PM EST for east central
Florida.
LAT...LON 2892 8155 2876 8141 2872 8143 2871 8144
2871 8146 2866 8146 2845 8183 2867 8184
TIME...MOT...LOC 1342Z 232DEG 37KT 2871 8164
$$
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, 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, 11:01 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.