Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 2, NWS Miami, FL

March 31, 2009Palm Beach County, Florida

NWS Miami, FL issued this tornado warning at Mar 31, 2009, 3:44 PM EDT for Palm Beach County, Florida. It was in force for 40 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: Mar 31, 2009, 3:44 PM EDT (19:44 UTC)
Expired: Mar 31, 2009, 4:24 PM EDT
In force: 40 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 135 km from the middle of the area, began a volume at 19:48 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, 7.7 hours before the alert went out and 109 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: 1332 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 607 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS52 KMFL 311944
TORMFL
FLC099-312045-
/O.NEW.KMFL.TO.W.0002.090331T1944Z-090331T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
344 PM EDT TUE MAR 31 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN PALM BEACH COUNTY IN SOUTH FLORIDA.

* UNTIL 445 PM EDT

* AT 343 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PORT OF
  PALM BEACH...MOVING SOUTHEAST AT 10 MPH.

  THIS STORM IS ALSO CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
  60 MPH.

* THE TORNADO WILL BE NEAR...
  PORT OF PALM BEACH...
  WEST PALM BEACH...
  AND SURROUNDING COMMUNITIES.

THE PUBLIC REPORTED A FUNNEL CLOUD AROUND 330 PM.

SOUTH FLORIDA TORNADOES MAY AT TIMES BE SMALL AND NARROW BUT THEY ARE
STILL DANGEROUS. THEY CAN EASILY FLIP A VEHICLE OR TRAILER OR CAUSE
LARGE TREES TO FALL. TAKE COVER INSIDE A STURDY BUILDING IMMEDIATELY.

LAT...LON 2673 8005 2670 8005 2670 8015 2684 8020
      2687 8019 2688 8018 2688 8006 2682 8003
      2678 8003 2678 8005 2676 8003 2674 8003
TIME...MOT...LOC 1943Z 323DEG 8KT 2676 8008

$$

GR

1 follow-up statement

032 
WWUS52 KMFL 312024
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
424 PM EDT TUE MAR 31 2009

FLC099-312032-
/O.CAN.KMFL.TO.W.0002.000000T0000Z-090331T2045Z/
PALM BEACH FL-
424 PM EDT TUE MAR 31 2009

...THE TORNADO WARNING FOR NORTHEASTERN PALM BEACH COUNTY IS
CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO HAS
DISSIPATED. THUS THE TORNADO WARNING HAS BEEN CANCELLED.

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
40 MPH...VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL POSSIBLE. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES.
AN UNCONFIRMED TORNADO WAS REPORTED IN THE WARNED AREA BETWEEN LILAC
AND MILITARY TRAIL AT 330 PM.

LAT...LON 2673 8005 2670 8005 2670 8015 2684 8020
      2687 8019 2688 8018 2688 8006 2682 8003
      2678 8003 2678 8005 2676 8003 2674 8003
TIME...MOT...LOC 2022Z 323DEG 8KT 2669 8002

$$

GR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 2:01 PM EDT	Special Weather Statement	MFL	Martin	89 min
Mar 31, 2:05 PM EDT	Areal Flood Advisory	MFL	Palm Beach	115 min
Mar 31, 2:23 PM EDT	Special Weather Statement	MFL	Martin	37 min
Mar 31, 2:33 PM EDT	Areal Flood Advisory	MFL	Palm Beach	87 min
Mar 31, 2:44 PM EDT	Areal Flood Advisory	MFL	Palm Beach	2 hr
Mar 31, 2:57 PM EDT	Special Marine Warning	MFL		93 min
Mar 31, 3:09 PM EDT	Special Weather Statement	MFL	Broward	51 min
Mar 31, 3:12 PM EDT	Tornado Warning	MFL	Palm Beach	33 min
Mar 31, 3:49 PM EDT	Special Weather Statement	MFL	Broward	56 min
Mar 31, 3:51 PM EDT	Special Marine Warning	MFL		54 min
Mar 31, 4:17 PM EDT	Areal Flood Advisory	MFL	Palm Beach	69 min
Mar 31, 4:18 PM EDT	Special Weather Statement	MFL	Miami-Dade	27 min
Mar 31, 4:29 PM EDT	Special Weather Statement	MFL	Palm Beach	31 min
Mar 31, 4:46 PM EDT	Areal Flood Warning	MFL	Palm Beach	3 hr
Mar 31, 4:53 PM EDT	Special Marine Warning	MFL		38 min
Mar 31, 4:57 PM EDT	Special Weather Statement	MFL	Miami-Dade	63 min
Mar 31, 5:56 PM EDT	Areal Flood Advisory	MFL	Palm Beach	21 min

Nearby

Tornado Warnings in Florida, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.