Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 24, NWS Melbourne, FL

July 24, 2009Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Jul 24, 2009, 6:28 PM EDT for Volusia County, Florida. It was in force for 32 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
Jul 24, 2009, 6:28 PM EDT (22:28 UTC)
Expired
Jul 24, 2009, 7:00 PM EDT
In force
32 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 107 km from the middle of the area, began a volume at 22:30 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.5 hours before the alert went out and 76 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 2009-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 109 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 2009-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
109 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1372 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 242228
TORMLB
FLC127-242300-
/O.NEW.KMLB.TO.W.0024.090724T2228Z-090724T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
628 PM EDT FRI JUL 24 2009

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL VOLUSIA COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...NEW SMYRNA BEACH...SOUTH DAYTONA...
  PORT ORANGE...PONCE INLET...EDGEWATER...

* UNTIL 700 PM EDT.

* AT 627 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO  
  NEAR PORT ORANGE...MOVING SOUTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WILBUR BY THE SEA AND BETHUNE BEACH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2921 8100 2915 8096 2910 8091 2908 8091
      2906 8089 2895 8083 2894 8084 2897 8086
      2898 8089 2893 8086 2888 8093 2914 8110
TIME...MOT...LOC 2228Z 322DEG 8KT 2917 8097

$$


52
1 follow-up statement
000 
WWUS52 KMLB 242244
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
644 PM EDT FRI JUL 24 2009

FLC127-242300-
/O.CON.KMLB.TO.W.0024.000000T0000Z-090724T2300Z/
VOLUSIA-
644 PM EDT FRI JUL 24 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR EAST
CENTRAL VOLUSIA COUNTY...

AT 644 PM EDT...A TORNADO WAS REPORTED.  THIS TORNADO WAS LOCATED 
JUST SOUTH OF PORT ORANGE...MOVING SOUTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
ALLENDALE...HARBOR OAKS...PONCE INLET...NEW SMYRNA BEACH AND 
EDGEWATER.

LAT...LON 2919 8103 2920 8100 2915 8096 2910 8091
      2908 8091 2906 8089 2899 8085 2897 8087
      2898 8089 2897 8088 2894 8097 2914 8110
TIME...MOT...LOC 2241Z 335DEG 11KT 2910 8101

$$



52

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 4:51 PM EDTSpecial Marine WarningMLB54 min
Jul 24, 5:52 PM EDTSpecial Marine WarningMLB53 min
Jul 24, 6:03 PM EDTTornado WarningMLBVolusia27 min
Jul 24, 6:54 PM EDTSevere Thunderstorm WarningMLBSeminole, Volusia51 min
Jul 24, 6:59 PM EDTTornado WarningMLBVolusia31 min
Jul 24, 7:19 PM EDTAreal Flood AdvisoryMLBSeminole, Volusia101 min
Jul 24, 7:43 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Seminole, Volusia62 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.