Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 20, NWS Melbourne, FL

September 9, 2017Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 9, 2017, 9:34 PM EDT for Saint Lucie County, Florida. It was in force for 26 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 9, 2017, 9:34 PM EDT (01:34 UTC)
Expired
Sep 9, 2017, 10:00 PM EDT
In force
26 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 77 km from the middle of the area, began a volume at 01:36 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.

What was reported inside it

TimeReportWhereRemark
Sep 9, 9:56 PM EDTTSTM WND GST 48Saint Lucie Airport, FLASOS MEASURED WIND GUST OF 42KT/48MPH FROM NNE. AT 957EDT, A GUST WAS MEASURED OF 46KT/53MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 1.6 hours before the alert went out and 184 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, Miami, FL at 00:00Z on 2017-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Miami, FL at 00:00Z on 2017-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

636 
WFUS52 KMLB 100134
TORMLB
FLC111-100200-
/O.NEW.KMLB.TO.W.0020.170910T0134Z-170910T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
934 PM EDT SAT SEP 9 2017

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Northeastern St. Lucie County in east central Florida...

* Until 1000 PM EDT
    
* At 933 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Fort Pierce Inlet, moving west at 25 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...
  Fort Pierce Inlet around 940 PM EDT. 
  Fort Pierce, Indrio and Saint Lucie Village around 950 PM EDT. 
  Lakewood Park around 1000 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Fort
Pierce Ocean Park.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2740 8039 2756 8044 2756 8029 2745 8024
TIME...MOT...LOC 0133Z 085DEG 22KT 2751 8023 

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

$$

Bragaw
1 follow-up statement
030 
WWUS52 KMLB 100147
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
947 PM EDT SAT SEP 9 2017

FLC111-100200-
/O.CON.KMLB.TO.W.0020.000000T0000Z-170910T0200Z/
St. Lucie FL-
947 PM EDT SAT SEP 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
NORTHEASTERN ST. LUCIE COUNTY...
    
At 947 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Saint Lucie Village, or over Indrio, moving west at
25 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...
  Indrio, Saint Lucie Airport and Fort Pierce North around 950 PM 
  EDT. 
  Lakewood Park around 1000 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Fort
Pierce Ocean Park.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2740 8039 2756 8044 2756 8029 2745 8024
TIME...MOT...LOC 0147Z 085DEG 22KT 2750 8033 

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

$$

Bragaw

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 9:59 PM EDTTornado WarningMLBSaint Lucie16 min
Sep 10, 1:54 AM EDTAreal Flood WarningMLBSaint Lucie111 min
Sep 10, 3:24 AM EDTFlash Flood WarningMLBSaint Lucie111 min
Sep 10, 3:49 AM EDTTornado WarningMLBIndian River, Saint Lucie16 min
Sep 10, 5:14 AM EDTAreal Flood WarningMLBIndian River, Saint Lucie3 hr
Sep 10, 5:14 AM EDTTornado WarningMLBBrevard31 min
Sep 10, 5:53 AM EDTTornado WarningMLBBrevard22 min
Sep 10, 8:05 AM EDTAreal Flood WarningMLBSaint Lucie3 hr
Sep 10, 8:18 AM EDTSpecial Marine WarningMLB42 min
Sep 10, 8:35 AM EDTSpecial Marine WarningMLB55 min
Sep 10, 9:19 AM EDTTornado WarningMLBBrevard26 min
Sep 10, 9:42 AM EDTAreal Flood WarningMLBIndian River3 hr
Sep 10, 10:28 AM EDTTornado WarningMLBOsceola32 min
Sep 10, 11:01 AM EDTTornado WarningMLBBrevard29 min
Sep 10, 11:12 AM EDTTornado WarningMLBBrevard48 min
Sep 10, 11:21 AM EDTTornado WarningMLBSaint Lucie24 min
Sep 10, 11:40 AM EDTTornado WarningMLBOkeechobee35 min
Sep 10, 11:48 AM EDTTornado WarningMLBSaint Lucie27 min
Sep 10, 11:58 AM EDTTornado WarningMLBBrevard, Indian River30 min
Sep 10, 12:09 PM EDTAreal Flood WarningMLBBrevard, Indian River, Okeechobee, Osceola, Saint Lucie3 hr
Sep 10, 12:13 PM EDTTornado WarningMLBOsceola32 min
Sep 10, 12:41 PM EDTTornado WarningMLBMartin, Saint Lucie34 min
Sep 10, 1:27 PM EDTTornado WarningMLBBrevard, Indian River33 min
Sep 10, 1:42 PM EDTTornado WarningMLBMartin, Saint Lucie33 min
Sep 10, 1:53 PM EDTTornado WarningMLBBrevard, Indian River20 min
Sep 10, 2:37 PM EDTTornado WarningMLBBrevard38 min
Sep 10, 2:39 PM EDTTornado WarningMLBSaint Lucie51 min
Sep 10, 3:12 PM EDTTornado WarningMLBIndian River, Saint Lucie33 min
Sep 10, 3:15 PM EDTTornado WarningMLBBrevard30 min
Sep 10, 3:16 PM EDTRiver Flood WarningMLBOsceola12 days
Sep 10, 3:22 PM EDTTornado WarningMLBMartin, Saint Lucie23 min
Sep 10, 3:56 PM EDTAreal Flood WarningMLBBrevard, Indian River, Saint Lucie109 min
Sep 10, 4:09 PM EDTTornado WarningMLBBrevard66 min
Sep 10, 4:14 PM EDTTornado WarningMLBIndian River31 min
Sep 10, 4:28 PM EDTTornado WarningMLBMartin, Saint Lucie47 min
Sep 10, 4:31 PM EDTRiver Flood WarningMLBSeminole38 hr
Sep 10, 4:38 PM EDTTornado WarningMLBBrevard, Indian River22 min
Sep 10, 4:42 PM EDTTornado WarningMLBBrevard, Seminole33 min
Sep 10, 4:44 PM EDTTornado WarningMLBBrevard, Seminole, Volusia16 min
Sep 10, 4:59 PM EDTTornado WarningMLBBrevard, Indian River31 min
Sep 10, 5:10 PM EDTTornado WarningMLBOsceola35 min
Sep 10, 5:12 PM EDTTornado WarningMLBBrevard, Seminole, Volusia63 min
Sep 10, 5:31 PM EDTTornado WarningMLBIndian River, Saint Lucie29 min
Sep 10, 5:43 PM EDTTornado WarningMLBSeminole, Volusia32 min
Sep 10, 5:45 PM EDTTornado WarningMLBVolusia30 min
Sep 10, 5:52 PM EDTTornado WarningMLBBrevard53 min
Sep 10, 5:58 PM EDTAreal Flood WarningMLBBrevard, Indian River, Lake, Martin, Okeechobee, Orange and 4 more12 hr
Sep 10, 6:15 PM EDTTornado WarningMLBLake, Seminole, Volusia30 min
Sep 10, 6:34 PM EDTTornado WarningMLBOrange, Seminole26 min
Sep 10, 6:39 PM EDTTornado WarningMLBOrange36 min
Sep 10, 6:58 PM EDTTornado WarningMLBBrevard, Volusia32 min
Sep 10, 7:25 PM EDTTornado WarningMLBLake35 min
Sep 10, 7:48 PM EDTFlash Flood WarningMLBBrevard, Indian River, Osceola2 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.