Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 25, NWS Melbourne, FL

July 24, 2009Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Jul 24, 2009, 6:59 PM EDT for Volusia County, Florida. It was in force for 31 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, 6:59 PM EDT (22:59 UTC)
Expired
Jul 24, 2009, 7:30 PM EDT
In force
31 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 104 km from the middle of the area, began a volume at 23:02 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, 11.0 hours before the alert went out and 73 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 242259
TORMLB
FLC127-242330-
/O.NEW.KMLB.TO.W.0025.090724T2259Z-090724T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
659 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 730 PM EDT.

* AT 658 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PONCE
  INLET...MOVING SOUTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  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 2910 8091 2908 8091 2906 8089 2900 8086
      2895 8083 2894 8084 2897 8086 2898 8089
      2893 8086 2888 8093 2914 8110 2921 8100
TIME...MOT...LOC 2259Z 322DEG 8KT 2912 8092

$$


52
2 follow-up statements
000 
WWUS52 KMLB 242313
SVSMLB

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

FLC127-242330-
/O.CON.KMLB.TO.W.0025.000000T0000Z-090724T2330Z/
VOLUSIA-
713 PM EDT FRI JUL 24 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR EAST
CENTRAL VOLUSIA COUNTY...

AT 712 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR INTERSTATE 95 
WEST OF NEW SMYRNA BEACH...MOVING SOUTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW 
SMYRNA BEACH...BETHUNE BEACH...TURTLE MOUND...EDGEWATER AND OAK HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERAL ROOFS WERE DAMAGED IN THE PORT ORANGE AREA AS THE TORNADO 
MOVED THROUGH.  

&&

LAT...LON 2910 8091 2908 8091 2906 8089 2900 8086
      2895 8083 2894 8084 2897 8086 2898 8089
      2893 8086 2888 8093 2914 8110 2921 8100
TIME...MOT...LOC 2310Z 322DEG 8KT 2910 8090

$$



52
000 
WWUS52 KMLB 242326
SVSMLB

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

FLC127-242335-
/O.EXP.KMLB.TO.W.0025.000000T0000Z-090724T2330Z/
VOLUSIA-
726 PM EDT FRI JUL 24 2009

...THE TORNADO WARNING FOR EAST CENTRAL VOLUSIA COUNTY WILL EXPIRE AT
730 PM EDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE STORM 
THAT PROMPTED THE WARNING WAS NO LONGER EXHIBITING STRONG ROTATION 
AND THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 2910 8091 2908 8091 2906 8089 2900 8086
      2895 8083 2894 8084 2897 8086 2898 8089
      2893 8086 2888 8093 2914 8110 2921 8100
TIME...MOT...LOC 2325Z 322DEG 8KT 2907 8088

$$


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, 6:28 PM EDTTornado WarningMLBVolusia32 min
Jul 24, 6:54 PM EDTSevere Thunderstorm WarningMLBSeminole, Volusia51 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.