Alert archive / Florida / Tornado Watches in 2005

Tornado Watch 450

June 10, 20059 counties in Florida

The Storm Prediction Center issued this tornado watch at Jun 10, 2005, 1:45 PM EDT for 9 counties in Florida. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 10, 2005, 1:45 PM EDT (17:45 UTC)
Expired: Jun 10, 2005, 11:00 PM EDT
In force: 9 hr
Issued by: the Storm Prediction Center

Counties Broward County, FL, Collier County, FL, Glades County, FL, Hendry County, FL, Lee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 83 km from the middle of the area, began a volume at 17:49 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.

Discussions around it

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

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 5.8 hours before the alert went out and 75 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: 355 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 101743
SEL0  
SPC WW 101743
FLZ000-CWZ000-110300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 450
NWS STORM PREDICTION CENTER NORMAN OK
145 PM EDT FRI JUN 10 2005

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

       SOUTHERN FLORIDA INCLUDING THE FLORIDA KEYS
       COASTAL WATERS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 1100
PM EDT.

TORNADOES...HAIL TO 0.5 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 65 STATUTE MILES
EITHER SIDE OF A LINE FROM 45 MILES NORTHEAST OF FORT MEYERS
FLORIDA TO 70 MILES SOUTH SOUTHWEST OF MIAMI 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...CONTINUE...WW 449...

DISCUSSION...OUTER RAIN BANDS EAST OF T.S. ARLENE WILL CONTINUE TO
FEED FROM THE SOUTHEAST ACROSS SRN FL AND THE KEYS.  SOUNDINGS SHOW
STRONG VERTICAL SHEAR PROFILES IN THE LOWEST 2KM INDICATING
FAVORABLE CONDITIONS FOR ISOLATED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 12035.


...MCCARTHY

271,0801 250,0794 243,0814 264,0822

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 4:46 PM EDT	Mesoscale Discussion	SPC	Broward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach	119 min

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.