Alert archive / Florida / Tornado Watches in 2005

Tornado Watch 370

June 1, 200511 counties in Florida

The Storm Prediction Center issued this tornado watch at Jun 1, 2005, 5:40 AM EDT for 11 counties in Florida. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 1, 2005, 5:40 AM EDT (09:40 UTC)
Expired: Jun 1, 2005, 11:00 AM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Brevard County, FL, Collier County, FL, Glades County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Martin County, FL, Okeechobee County, FL, Osceola County, FL, Palm Beach County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 138 km from the middle of the area, began a volume at 09:43 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.

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 1, 10:42 AM EDT	Tornado Warning	MFL	Collier, Miami-Dade	101 days

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 9.7 hours before the alert went out and 144 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: 1310 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 010940
SEL0  
SPC WW 010940
FLZ000-CWZ000-011500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 370
NWS STORM PREDICTION CENTER NORMAN OK
540 AM EDT WED JUN 1 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       PORTIONS OF CENTRAL AND SOUTHERN FLORIDA
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY MORNING FROM 540 AM UNTIL 1100 AM EDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE MILES
EAST AND WEST OF A LINE FROM 115 MILES SOUTH OF AVON PARK FLORIDA
TO 25 MILES NORTH OF MELBOURNE FLORIDA.  FOR A COMPLETE DEPICTION
OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 366. WATCH NUMBER 366 WILL NOT BE IN EFFECT AFTER 540
AM EDT. CONTINUE...WW 368...

DISCUSSION...BROKEN LINE OF TSTMS IS EXPECTED TO SHIFT EWD ACROSS
CENTRAL/SWRN FL PENINSULA THROUGH MIDMORNING LOCAL TIME...WHILE
ADDITIONAL CONVECTION DEVELOPS/STRENGTHENS ACROSS ERN/SRN FL AHEAD
OF LINE.  ENVIRONMENT IS EXPECTED TO REMAIN FAVORABLE FOR BOW/LEWP
FORMATIONS AND SMALL SUPERCELLS WITH POTENTIALLY TORNADIC
MESOCIRCULATIONS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24025.


...EDWARDS/imy

255,0820 282,0812 282,0795 255,0803

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 10:29 PM EDT	Mesoscale Discussion	SPC	Flagler, Hernando, Hillsborough, Lake, Manatee, Marion and 4 more	2 hr
May 31, 10:40 PM EDT	Tornado Watch	SPC	Charlotte, DeSoto, Hardee, Hillsborough, Lake, Lee and 8 more	7 hr
Jun 1, 12:28 AM EDT	Mesoscale Discussion	SPC	Charlotte, DeSoto, Hardee, Hillsborough, Lake, Lee and 8 more	92 min
Jun 1, 3:23 AM EDT	Mesoscale Discussion	SPC	Brevard, Charlotte, Collier, DeSoto, Glades, Hardee and 19 more	2 hr
Jun 1, 8:31 AM EDT	Mesoscale Discussion	SPC	Brevard, Collier, Glades, Hendry, Highlands, Indian River and 5 more	89 min
Jun 1, 10:15 AM EDT	Mesoscale Discussion	SPC	Brevard, Collier, Glades, Hendry, Highlands, Indian River and 5 more	60 min
Jun 1, 11:54 AM EDT	Mesoscale Discussion	SPC	Hamilton, Jefferson, Madison	2 hr

Nearby

Tornado Watches in Florida, 2005 Every tornado watch in 2005

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.