Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 10, NWS Melbourne, FL

April 20, 2020Brevard County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 20, 2020, 12:16 PM EDT for Brevard 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: Apr 20, 2020, 12:16 PM EDT (16:16 UTC)
Expired: Apr 20, 2020, 12:45 PM EDT
In force: 29 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 79 km from the middle of the area, began a volume at 16:16 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
Apr 20, 7:02 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 4.3 hours before the alert went out and 49 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: 2398 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 4.0
Supercell composite: 18.3

Open this sounding in Storm Lab

The text

As transmitted.

744 
WFUS52 KMLB 201616
TORMLB
FLC009-201645-
/O.NEW.KMLB.TO.W.0010.200420T1616Z-200420T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
1216 PM EDT Mon Apr 20 2020

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Northwestern Brevard County in east central Florida...

* Until 1245 PM EDT.
    
* At 1216 PM EDT, a severe thunderstorm capable of producing a
  tornado was located over Scottsmoor, moving east at 40 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...
  Haulover Canal and Klondike Beach around 1230 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Shiloh.

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 2866 8092 2879 8094 2881 8085 2880 8085
      2879 8084 2879 8079 2887 8084 2888 8081
      2887 8081 2888 8080 2887 8078 2889 8078
      2890 8075 2871 8062
TIME...MOT...LOC 1616Z 266DEG 36KT 2875 8086 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Sedlock

1 follow-up statement

316 
WWUS52 KMLB 201640
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
1240 PM EDT Mon Apr 20 2020

FLC009-201649-
/O.EXP.KMLB.TO.W.0010.000000T0000Z-200420T1645Z/
Brevard FL-
1240 PM EDT Mon Apr 20 2020

...THE TORNADO WARNING FOR NORTHWESTERN BREVARD COUNTY WILL EXPIRE AT
1245 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 300 PM EDT for
east central Florida.

LAT...LON 2866 8092 2879 8094 2881 8085 2880 8085
      2879 8084 2879 8079 2887 8084 2888 8081
      2887 8081 2888 8080 2887 8078 2889 8078
      2890 8075 2871 8062
TIME...MOT...LOC 1639Z 266DEG 36KT 2876 8065 

$$

Sedlock

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 3:06 AM EDT	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	17 hr
Apr 20, 9:41 AM EDT	Special Weather Statement	MLB	Volusia	64 min
Apr 20, 10:12 AM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	63 min
Apr 20, 10:32 AM EDT	Special Weather Statement	MLB	Lake	43 min
Apr 20, 10:38 AM EDT	Special Marine Warning	MLB		119 min
Apr 20, 10:42 AM EDT	Severe Thunderstorm Warning	MLB	Lake, Orange, Seminole, Volusia	63 min
Apr 20, 10:49 AM EDT	Tornado Warning	MLB	Volusia	26 min
Apr 20, 11:06 AM EDT	Tornado Warning	MLB	Lake, Orange, Seminole	24 min
Apr 20, 11:10 AM EDT	Severe Thunderstorm Warning	MLB	Seminole, Volusia	50 min
Apr 20, 11:13 AM EDT	Tornado Warning	MLB	Volusia	32 min
Apr 20, 11:28 AM EDT	Tornado Warning	MLB	Orange, Seminole	32 min
Apr 20, 11:32 AM EDT	Special Marine Warning	MLB		2 hr
Apr 20, 11:44 AM EDT	Severe Thunderstorm Warning	MLB	Brevard, Seminole, Volusia	46 min
Apr 20, 11:48 AM EDT	Tornado Warning Tornado observed	MLB	Brevard, Seminole, Volusia	42 min
Apr 20, 11:59 AM EDT	Tornado Warning	MLB	Brevard	31 min
Apr 20, 12:14 PM EDT	Tornado Warning	MLB	Brevard	31 min
Apr 20, 12:56 PM EDT	Special Weather Statement	MLB	Osceola	64 min
Apr 20, 1:05 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	55 min
Apr 20, 1:52 PM EDT	Special Weather Statement	MLB	Brevard	53 min
Apr 20, 1:56 PM EDT	Special Marine Warning	MLB		68 min
Apr 20, 2:43 PM EDT	Special Weather Statement	MLB	Osceola	47 min
Apr 20, 3:02 PM EDT	Special Weather Statement	MLB	Okeechobee	58 min
Apr 20, 4:40 PM EDT	Special Marine Warning	MLB		2 hr
Apr 20, 4:44 PM EDT	Special Weather Statement	MLB	Okeechobee	46 min
Apr 20, 5:06 PM EDT	Special Weather Statement	MLB	Martin	39 min
Apr 20, 5:16 PM EDT	Severe Thunderstorm Warning	MLB	Martin, Saint Lucie	33 min
Apr 20, 5:21 PM EDT	Tornado Warning	MLB	Martin	24 min
Apr 20, 5:41 PM EDT	Special Marine Warning	MLB		49 min

Nearby

Tornado Warnings in Florida, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.