Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 8, NWS Melbourne, FL

April 14, 2009Okeechobee County, Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 14, 2009, 1:32 PM EDT for Okeechobee County, Saint Lucie County, Florida. It was in force for 43 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
Apr 14, 2009, 1:32 PM EDT (17:32 UTC)
Expired
Apr 14, 2009, 2:15 PM EDT
In force
43 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Okeechobee County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 93 km from the middle of the area, began a volume at 17:32 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
Apr 14, 1:44 PM EDTHAIL 15 Sw Indrio, FLQUARTER SIZE HAIL AT MILE MARKER 134 ON I-95.

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

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 5.5 hours before the alert went out and 131 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, Cape Canaveral, FL at 12:00Z on 2009-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 101 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, Cape Canaveral, FL at 12:00Z on 2009-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
101 J/kg
Mixed-layer CIN
-253 J/kg
Mixed-layer LCL
1049 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 141732
TORMLB
FLC093-111-141815-
/O.NEW.KMLB.TO.W.0008.090414T1732Z-090414T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
132 PM EDT TUE APR 14 2009

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN OKEECHOBEE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITY OF OKEECHOBEE...
  ST. LUCIE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...WALTON...FORT PIERCE INLET...WHITE
  CITY...SAINT LUCIE NUCLEAR PLANT...PORT SAINT LUCIE...INDRIO...FORT
  PIERCE...

* UNTIL 215 PM EDT.

* AT 131 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  OKEECHOBEE...MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  FOUR SEASONS ESTATES BY 140 PM EDT...
  8 MILES NORTHWEST OF SAINT LUCIE WEST AND 9 MILES WEST OF WHITE
  CITY BY 215 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING COIN 
SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

 
EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS. ABANDON YOUR VEHICLE IF THE
TORNADO IS NEARBY.

&&

LAT...LON 2729 8020 2729 8021 2729 8023 2733 8024
      2734 8026 2728 8025 2721 8061 2721 8068
      2719 8068 2718 8075 2720 8080 2716 8087
      2722 8097 2729 8100 2756 8057 2756 8032
      2730 8020
TIME...MOT...LOC 1731Z 243DEG 30KT 2724 8085

$$

52
2 follow-up statements
000 
WWUS52 KMLB 141749
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
149 PM EDT TUE APR 14 2009

FLC093-111-141815-
/O.CON.KMLB.TO.W.0008.000000T0000Z-090414T1815Z/
OKEECHOBEE-ST. LUCIE-
149 PM EDT TUE APR 14 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR ST. LUCIE
AND SOUTHERN OKEECHOBEE COUNTIES...

AT 148 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR FOUR SEASONS 
ESTATES...EAST OF OKEECHOBEE...MOVING RAPIDLY NORTHEAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  CARLTON...SAINT LUCIE METS...FORT PIERCE SOUTH BY 215 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM HAS PRODUCED HAIL THE SIZE 
OF QUARTERS AND IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE 
WINDS.

&&

LAT...LON 2729 8023 2733 8024 2734 8026 2728 8025
      2721 8061 2721 8068 2719 8068 2718 8075
      2720 8080 2720 8084 2716 8087 2722 8097
      2729 8100 2756 8057 2756 8032 2730 8020
      2729 8021
TIME...MOT...LOC 1748Z 247DEG 33KT 2730 8070

$$

52
000 
WWUS52 KMLB 141803
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
203 PM EDT TUE APR 14 2009

FLC093-141811-
/O.CAN.KMLB.TO.W.0008.000000T0000Z-090414T1815Z/
OKEECHOBEE-
203 PM EDT TUE APR 14 2009

...THE TORNADO WARNING FOR SOUTHEASTERN OKEECHOBEE COUNTY IS
CANCELLED...

LAT...LON 2729 8023 2733 8024 2734 8026 2728 8025
      2723 8061 2731 8066 2756 8057 2756 8034
      2755 8032 2750 8029 2744 8027 2740 8025
      2730 8020 2729 8021
TIME...MOT...LOC 1801Z 248DEG 23KT 2733 8054

$$

FLC111-141815-
/O.CON.KMLB.TO.W.0008.000000T0000Z-090414T1815Z/
ST. LUCIE-
203 PM EDT TUE APR 14 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR ST. LUCIE
COUNTY...

AT 201 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 10 MILES WEST OF PORT 
SAINT LUCIE...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
SAINT LUCIE METS...WHITE CITY AND FORT PIERCE SOUTH BY 215 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM HAS PRODUCED HAIL THE SIZE 
OF QUARTERS AND IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE 
WINDS.

&&

LAT...LON 2729 8023 2733 8024 2734 8026 2728 8025
      2723 8061 2731 8066 2756 8057 2756 8034
      2755 8032 2750 8029 2744 8027 2740 8025
      2730 8020 2729 8021
TIME...MOT...LOC 1801Z 248DEG 23KT 2733 8054

$$

52

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 11:17 PM EDTSpecial Marine WarningMLB118 min
Apr 13, 11:27 PM EDTSevere Thunderstorm WarningMLBVolusia23 min
Apr 14, 3:47 AM EDTWind AdvisoryMLBLake, Okeechobee, Orange, Osceola, Seminole, Volusia16 hr
Apr 14, 5:25 AM EDTSevere Thunderstorm WarningMLBLake32 min
Apr 14, 9:17 AM EDTTornado WarningMLBLake, Orange43 min
Apr 14, 9:51 AM EDTSevere Thunderstorm WarningMLBLake, Orange, Osceola, Seminole, Volusia54 min
Apr 14, 10:15 AM EDTSpecial Marine WarningMLB2 hr
Apr 14, 10:24 AM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Osceola, Seminole, Volusia51 min
Apr 14, 10:29 AM EDTTornado WarningMLBOrange31 min
Apr 14, 10:53 AM EDTTornado WarningMLBBrevard37 min
Apr 14, 11:07 AM EDTTornado WarningMLBBrevard24 min
Apr 14, 12:27 PM EDTSpecial Marine WarningMLB63 min
Apr 14, 1:30 PM EDTSevere Thunderstorm WarningMLBOkeechobee, Saint Lucie45 min
Apr 14, 1:50 PM EDTSpecial Marine WarningMLB43 min
Apr 14, 2:13 PM EDTTornado WarningMLBSaint Lucie13 min
Apr 14, 2:45 PM EDTFire Weather WatchMLBLake, Orange, Osceola, Seminole, Volusia13 hr

Nearby

Tornado Warnings in Florida, 2009Every tornado warning in 2009Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.