Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 46, NWS Miami, FL

October 28, 2017Palm Beach County, Florida

NWS Miami, FL issued this tornado warning at Oct 28, 2017, 6:26 PM EDT for Palm Beach County, Florida. It was in force for 22 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 28, 2017, 6:26 PM EDT (22:26 UTC)
Expired
Oct 28, 2017, 6:48 PM EDT
In force
22 min
Issued by
NWS Miami, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 133 km from the middle of the area, began a volume at 22:26 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 12:00Z, 10.4 hours before the alert went out and 107 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 12:00Z on 2017-10-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, Miami, FL at 12:00Z on 2017-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.193958Sfc1 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
31 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
130 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

938 
WFUS52 KMFL 282226
TORMFL
FLC099-282300-
/O.NEW.KMFL.TO.W.0046.171028T2226Z-171028T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Miami FL
626 PM EDT SAT OCT 28 2017

The National Weather Service in Miami has issued a

* Tornado Warning for...
  East central Palm Beach County in southeastern Florida...

* Until 700 PM EDT
    
* At 624 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over West Palm Beach, moving north at 10 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. The public has reported funnel 
           clouds, as well as downed power lines along the track of 
           the circulation.

  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. People in West Palm Beach should take 
           immediate action to move to a safe location. 

* This dangerous storm will be near...
  Port Of Palm Beach around 645 PM EDT. 
  Lake Park around 655 PM EDT. 
  Riviera Beach, Juno Beach, North Palm Beach and Juno Ridge around 
  700 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Mangonia Park, Westgate-Belvedere Homes, Fau North Campus and
Lakeside Green.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 2669 8003 2669 8010 2688 8015 2687 8002
TIME...MOT...LOC 2224Z 184DEG 11KT 2671 8007 

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

$$
2 follow-up statements
683 
WWUS52 KMFL 282242
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
642 PM EDT SAT OCT 28 2017

FLC099-282300-
/O.CON.KMFL.TO.W.0046.000000T0000Z-171028T2300Z/
Palm Beach FL-
642 PM EDT SAT OCT 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORTHEASTERN PALM BEACH COUNTY...
    
At 642 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Port Of Palm Beach, or near West Palm Beach, moving
north at 15 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...
  Riviera Beach and Lake Park around 655 PM EDT. 
  West Palm Beach, Juno Beach, North Palm Beach and Juno Ridge 
  around 700 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Fau
North Campus and Mangonia Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or 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.

Heavy rainfall may hiSIde this tornado. Do not wait to see or hear 
the tornado. TAKE COVER NOW!

&&

LAT...LON 2675 8005 2675 8011 2688 8015 2687 8003
TIME...MOT...LOC 2242Z 176DEG 13KT 2677 8007 

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

$$
961 
WWUS52 KMFL 282248
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
648 PM EDT SAT OCT 28 2017

FLC099-282258-
/O.CAN.KMFL.TO.W.0046.000000T0000Z-171028T2300Z/
Palm Beach FL-
648 PM EDT SAT OCT 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN PALM BEACH 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.

LAT...LON 2675 8005 2675 8011 2688 8015 2687 8003
TIME...MOT...LOC 2247Z 184DEG 11KT 2679 8007 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 28, 12:29 AM EDTSmall Craft AdvisoryMFL5 hr
Oct 28, 12:29 AM EDTTropical Storm WarningMFL32 hr
Oct 28, 4:59 AM EDTSmall Craft AdvisoryMFL47 hr
Oct 28, 10:18 AM EDTFlood WatchMFLBroward, Collier, Miami-Dade, Monroe, Palm Beach19 hr
Oct 28, 11:17 AM EDTTropical Storm WatchMFLMiami-Dade18 hr
Oct 28, 11:40 AM EDTRip Current StatementMFLBroward, Palm Beach17 hr
Oct 28, 1:18 PM EDTTornado WarningMFLMiami-Dade27 min
Oct 28, 2:24 PM EDTSpecial Marine WarningMFL36 min
Oct 28, 4:32 PM EDTSpecial Marine WarningMFL43 min
Oct 28, 5:39 PM EDTTornado WarningMFLPalm Beach21 min
Oct 28, 6:10 PM EDTTornado WarningMFLPalm Beach20 min
Oct 28, 6:14 PM EDTSpecial Marine WarningMFL31 min
Oct 28, 6:58 PM EDTSpecial Marine WarningMFL32 min
Oct 28, 7:04 PM EDTAreal Flood AdvisoryMFLPalm Beach3 hr
Oct 28, 7:14 PM EDTAreal Flood AdvisoryMFLPalm Beach3 hr
Oct 28, 7:27 PM EDTSpecial Marine WarningMFL33 min

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.