Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 7, NWS Melbourne, FL

April 20, 2020Brevard County, Seminole County, Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 20, 2020, 11:48 AM EDT for Brevard County, Seminole County, Volusia 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: Apr 20, 2020, 11:48 AM EDT (15:48 UTC)
Expired: Apr 20, 2020, 12:30 PM EDT
In force: 42 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Brevard County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 85 km from the middle of the area, began a volume at 15:49 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, 3.8 hours before the alert went out and 69 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.

746 
WFUS52 KMLB 201548
TORMLB
FLC009-117-127-201630-
/O.NEW.KMLB.TO.W.0007.200420T1548Z-200420T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
1148 AM EDT Mon Apr 20 2020

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Central Seminole County in east central Florida...
  Northwestern Brevard County in east central Florida...
  Southeastern Volusia County in east central Florida...

* Until 1230 PM EDT.
    
* At 1147 AM EDT, a tornado producing storm was located over Lake
  Jessup, moving east at 40 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  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 storm will be near...
  Geneva around 1150 AM EDT.
  Maytown around 1210 PM EDT.
  Scottsmoor and Mims around 1220 PM EDT.

Other locations impacted by this tornadic thunderstorm include Lake
Harney.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 2870 8131 2883 8129 2892 8089 2864 8081
TIME...MOT...LOC 1547Z 264DEG 35KT 2876 8122 

TORNADO...OBSERVED
HAIL...<.75IN

$$

Sedlock

1 follow-up statement

708 
WWUS52 KMLB 201606
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
1206 PM EDT Mon Apr 20 2020

FLC117-201615-
/O.CAN.KMLB.TO.W.0007.000000T0000Z-200420T1630Z/
Seminole FL-
1206 PM EDT Mon Apr 20 2020

...THE TORNADO WARNING FOR CENTRAL SEMINOLE COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled for 
Seminole County only.

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

LAT...LON 2892 8089 2864 8081 2868 8102 2869 8102
      2875 8105 2882 8106
TIME...MOT...LOC 1605Z 268DEG 38KT 2876 8099 

$$

FLC009-127-201630-
/O.CON.KMLB.TO.W.0007.000000T0000Z-200420T1630Z/
Brevard FL-Volusia FL-
1206 PM EDT Mon Apr 20 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT FOR
NORTHWESTERN BREVARD AND EXTREME SOUTHEASTERN VOLUSIA COUNTIES...
        
At 1205 PM EDT, a confirmed tornado was located near Maytown, or 7
miles west of Scottsmoor, moving east at 40 to 45 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

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 tornado will be near...
  Mims and Scottsmoor around 1220 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Turnbull.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 2892 8089 2864 8081 2868 8102 2869 8102
      2875 8105 2882 8106
TIME...MOT...LOC 1605Z 268DEG 38KT 2876 8099 

TORNADO...OBSERVED
HAIL...<.75IN

$$

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, 11:59 AM EDT	Tornado Warning	MLB	Brevard	31 min
Apr 20, 12:14 PM EDT	Tornado Warning	MLB	Brevard	31 min
Apr 20, 12:16 PM EDT	Tornado Warning	MLB	Brevard	29 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.