Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 71, NWS Melbourne, FL

October 1, 2017Brevard County, Florida

NWS Melbourne, FL issued this tornado warning at Oct 1, 2017, 8:51 PM EDT for Brevard County, Florida. It was in force for 11 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
Oct 1, 2017, 8:51 PM EDT (00:51 UTC)
Expired
Oct 1, 2017, 9:02 PM EDT
In force
11 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 20 km from the middle of the area, began a volume at 00:50 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

Tampa Bay, FL (KTBW), launched 00:00Z, 0.9 hours before the alert went out and 185 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-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2017-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 361 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2017-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
361 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
974 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

053 
WFUS52 KMLB 020051
TORMLB
FLC009-020115-
/O.NEW.KMLB.TO.W.0071.171002T0051Z-171002T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
851 PM EDT SUN OCT 1 2017

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Central Brevard County in Florida...

* Until 915 PM EDT
    
* At 850 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Cocoa Beach, 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 dangerous storm will be near...
  Rockledge around 910 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Georgiana.

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 2824 8058 2830 8077 2840 8073 2831 8057
      2826 8057
TIME...MOT...LOC 0050Z 113DEG 17KT 2828 8062 

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

$$

Weitlich
1 follow-up statement
529 
WWUS52 KMLB 020102
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
902 PM EDT SUN OCT 1 2017

FLC009-020111-
/O.CAN.KMLB.TO.W.0071.000000T0000Z-171002T0115Z/
Brevard FL-
902 PM EDT SUN OCT 1 2017

...THE TORNADO WARNING FOR CENTRAL BREVARD COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 2824 8058 2830 8077 2840 8073 2831 8057
      2826 8057
TIME...MOT...LOC 0100Z 113DEG 17KT 2830 8068 

$$

Weitlich

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 1, 8:33 PM EDTFlash Flood WarningMLBBrevard3 hr
Oct 1, 11:30 PM EDTFlash Flood WarningMLBBrevard3 hr
Oct 2, 3:37 AM EDTHigh Surf AdvisoryMLBVolusia4 days

Nearby

Tornado Warnings in Florida, 2017Every tornado warning in 2017Tornadoes in 2017

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.