Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 4, NWS Miami, FL

January 23, 2017Palm Beach County, Florida

NWS Miami, FL issued this tornado warning at Jan 23, 2017, 1:41 AM EST for Palm Beach County, Florida. It was in force for 10 min. 4 reports 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: Jan 23, 2017, 1:41 AM EST (06:41 UTC)
Expired: Jan 23, 2017, 1:51 AM EST
In force: 10 min
Issued by: NWS Miami, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 145 km from the middle of the area, began a volume at 06:44 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

Time	Report	Where	Remark
Jan 23, 1:45 AM EST	TSTM WND DMG	1 Nnw Juno Beach, FL	IN JUNO BEACH... MULITPLE POSTS ON SOCIAL MEDIA SHOW DOWN POWER LINES... FALLEN TREES AND STREET SIGNS DOWN. TIME ESTIMATED BY RADAR.
Jan 23, 1:45 AM EST	TSTM WND DMG	1 Nnw Juno Beach, FL	IN JUNO BEACH... MULITPLE POSTS ON SOCIAL MEDIA SHOW DOWN POWER LINES... FALLEN TREES... STREET SIGNS DOWN AND DAMAGE TO MAILBOXES. TIME ESTIMATED BY RADAR.
Jan 23, 1:45 AM EST	TORNADO	2 W Juno Beach, FL	EF-0 DAMAGE CONFIRMED BY SURVEY CREW. TREE DAMAGE. WINDS ESTIMATED AT 75-80 MPH
Jan 23, 1:47 AM EST	TORNADO	1 N Juno Beach, FL	EF-0 DAMAGE CONFIRMED BY SURVEY CREW. TREE DAMAGE. WINDS ESTIMATED AT 70 MPH

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 22, 9:57 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 6.7 hours before the alert went out and 120 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: 635 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

649 
WFUS52 KMFL 230641
TORMFL
FLC099-230715-
/O.NEW.KMFL.TO.W.0004.170123T0641Z-170123T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Miami FL
141 AM EST MON JAN 23 2017

The National Weather Service in Miami has issued a

* Tornado Warning for...
  Northeastern Palm Beach County in southeastern Florida...

* Until 215 AM EST
    
* At 141 AM EST, a severe thunderstorm capable of producing a tornado
  was located over Palm Beach Gardens, moving northeast at 45 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...
  Jupiter, Juno Beach and Juno Ridge around 145 AM EST. 
  Tequesta around 150 AM EST. 

Other locations impacted by this tornadic thunderstorm include Fau
North Campus and Limestone Creek.

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 2682 8003 2682 8014 2691 8018 2697 8009
      2697 8003
TIME...MOT...LOC 0641Z 247DEG 41KT 2687 8013 

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

$$

ALM

1 follow-up statement

154 
WWUS52 KMFL 230651
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
151 AM EST MON JAN 23 2017

FLC099-230700-
/O.CAN.KMFL.TO.W.0004.000000T0000Z-170123T0715Z/
Palm Beach FL-
151 AM EST MON JAN 23 2017

...THE TORNADO WARNING FOR NORTHEASTERN PALM BEACH COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
into the Atlantic. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 600 AM EST for southeastern
Florida.

LAT...LON 2682 8003 2682 8014 2691 8018 2697 8009
      2697 8003
TIME...MOT...LOC 0650Z 247DEG 41KT 2691 8001 

$$

ALM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 22, 11:15 PM EST	Special Weather Statement	MFL	Glades, Hendry	60 min
Jan 22, 11:32 PM EST	Special Marine Warning	MFL		28 min
Jan 22, 11:50 PM EST	Special Marine Warning	MFL		25 min
Jan 23, 12:03 AM EST	Special Marine Warning	MFL		57 min
Jan 23, 12:03 AM EST	Special Weather Statement	MFL	Collier, Glades, Hendry, Palm Beach	57 min
Jan 23, 12:20 AM EST	Special Marine Warning	MFL		25 min
Jan 23, 12:25 AM EST	Severe Thunderstorm Warning	MFL	Glades, Hendry, Palm Beach	50 min
Jan 23, 12:36 AM EST	Severe Thunderstorm Warning	MFL	Collier	24 min
Jan 23, 12:46 AM EST	Special Marine Warning	MFL		44 min
Jan 23, 12:54 AM EST	Special Weather Statement	MFL	Broward, Collier, Palm Beach	66 min
Jan 23, 12:58 AM EST	Tornado Warning	MFL	Palm Beach	32 min
Jan 23, 1:03 AM EST	Severe Thunderstorm Warning	MFL	Collier	42 min
Jan 23, 1:12 AM EST	Special Marine Warning	MFL		63 min
Jan 23, 1:17 AM EST	Tornado Warning	MFL	Palm Beach	28 min
Jan 23, 1:25 AM EST	Tornado Warning	MFL	Collier	20 min
Jan 23, 1:26 AM EST	Special Marine Warning	MFL		94 min
Jan 23, 1:52 AM EST	Special Marine Warning	MFL		83 min
Jan 23, 1:56 AM EST	Special Weather Statement	MFL	Broward, Monroe, Palm Beach	64 min
Jan 23, 2:02 AM EST	Severe Thunderstorm Warning	MFL	Palm Beach	43 min
Jan 23, 2:23 AM EST	Wind Advisory	MFL	Broward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more	17 hr
Jan 23, 2:29 AM EST	Severe Thunderstorm Warning	MFL	Broward	31 min
Jan 23, 2:48 AM EST	Special Weather Statement	MFL	Broward, Miami-Dade, Monroe	87 min
Jan 23, 2:49 AM EST	Special Weather Statement	MFL	Monroe	26 min
Jan 23, 2:54 AM EST	Severe Thunderstorm Warning	MFL	Broward	36 min
Jan 23, 2:56 AM EST	Tornado Warning	MFL	Miami-Dade, Monroe	34 min
Jan 23, 2:57 AM EST	Special Marine Warning	MFL		63 min
Jan 23, 3:06 AM EST	Special Marine Warning	MFL		84 min
Jan 23, 3:35 AM EST	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade, Monroe	40 min
Jan 23, 3:42 AM EST	Special Marine Warning	MFL		48 min
Jan 23, 3:44 AM EST	Tornado Warning	MFL	Miami-Dade	19 min
Jan 23, 4:01 AM EST	Special Weather Statement	MFL	Miami-Dade	44 min
Jan 23, 4:15 AM EST	Severe Thunderstorm Warning	MFL	Miami-Dade	11 min
Jan 23, 4:19 AM EST	Special Marine Warning	MFL		41 min
Jan 23, 4:55 AM EST	Special Marine Warning	MFL		50 min
Jan 23, 5:43 AM EST	Special Marine Warning	MFL		32 min
Jan 23, 5:43 AM EST	Special Marine Warning	MFL		32 min
Jan 23, 6:12 AM EST	Special Marine Warning	MFL		48 min
Jan 23, 7:03 AM EST	Special Weather Statement	MFL	Collier, Glades, Hendry	87 min
Jan 23, 7:45 AM EST	Special Marine Warning	MFL		60 min
Jan 23, 8:30 AM EST	Special Weather Statement	MFL	Palm Beach	75 min
Jan 23, 9:52 AM EST	Special Weather Statement	MFL	Miami-Dade	53 min
Jan 23, 10:38 AM EST	Special Marine Warning	MFL		82 min
Jan 23, 11:34 AM EST	Special Marine Warning	MFL		56 min

Nearby

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