Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 8, NWS Melbourne, FL

May 14, 2018Martin County, Florida

NWS Melbourne, FL issued this tornado warning at May 14, 2018, 6:48 AM EDT for Martin County, Florida. It was in force for 42 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: May 14, 2018, 6:48 AM EDT (10:48 UTC)
Expired: May 14, 2018, 7:30 AM EDT
In force: 42 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Martin County, FL

The radar

The Melbourne radar (KMLB), 114 km from the middle of the area, began a volume at 10:50 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 nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 10.8 hours before the alert went out and 143 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: 97 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

561 
WFUS52 KMLB 141048
TORMLB
FLC085-141130-
/O.NEW.KMLB.TO.W.0008.180514T1048Z-180514T1130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
648 AM EDT MON MAY 14 2018

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Central Martin County in east central Florida...

* Until 730 AM EDT.
    
* At 647 AM EDT, a severe thunderstorm capable of producing a 
  tornado was located 10 miles east of Indiantown, moving northwest 
  at 20 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
  central Martin 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.

&&

LAT...LON 2719 8060 2721 8034 2697 8026 2696 8032
TIME...MOT...LOC 1047Z 155DEG 15KT 2699 8030 

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

$$

15

1 follow-up statement

899 
WWUS52 KMLB 141121
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
721 AM EDT MON MAY 14 2018

FLC085-141131-
/O.EXP.KMLB.TO.W.0008.000000T0000Z-180514T1130Z/
Martin FL-
721 AM EDT MON MAY 14 2018

...THE TORNADO WARNING FOR CENTRAL MARTIN COUNTY WILL EXPIRE AT 730
AM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 2719 8060 2721 8034 2697 8026 2696 8032
TIME...MOT...LOC 1121Z 155DEG 15KT 2712 8037 

$$

Blottman

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 6:39 AM EDT	Special Weather Statement	MLB	Martin	51 min
May 14, 11:13 AM EDT	Special Marine Warning	MLB		62 min
May 14, 12:34 PM EDT	Special Marine Warning	MLB		56 min
May 14, 1:09 PM EDT	Special Weather Statement	MLB	Martin	51 min
May 14, 1:17 PM EDT	Severe Thunderstorm Warning	MLB	Okeechobee	43 min
May 14, 1:25 PM EDT	Special Marine Warning	MLB		95 min
May 14, 1:33 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	57 min
May 14, 1:59 PM EDT	Special Marine Warning	MLB		91 min
May 14, 3:01 PM EDT	Special Weather Statement	MLB	Seminole	29 min
May 14, 3:05 PM EDT	Special Marine Warning	MLB		115 min
May 14, 4:04 PM EDT	Special Marine Warning	MLB		86 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.