Alert archive / Florida / Tornado Watches in 2007
Tornado Watch 330
The Storm Prediction Center issued this tornado watch at Jun 2, 2007, 6:49 AM EDT for 26 counties in Florida. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 2, 2007, 6:49 AM EDT (10:49 UTC)
- Expired
- Jun 2, 2007, 3:00 PM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 26 counties
Brevard County, FL, Charlotte County, FL, Citrus County, FL, DeSoto County, FL, Flagler County, FL, Hardee County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Marion County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL
The radar
The Tampa radar (KTBW), 70 km from the middle of the area, began a volume at 10:49 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
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 2, 8:32 AM EDT | Flash Flood Warning | TBW | Pinellas | 88 min |
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, 10.8 hours before the alert went out and 70 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 021051
SEL0
SPC WW 021051
FLZ000-CWZ000-021900-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 330
NWS STORM PREDICTION CENTER NORMAN OK
650 AM EDT SAT JUN 2 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL INTO PART OF NORTHEAST FLORIDA
COASTAL WATERS
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 650 AM UNTIL
300 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 80 STATUTE
MILES EITHER SIDE OF A LINE FROM 20 MILES WEST OF SARASOTA
FLORIDA TO 50 MILES EAST SOUTHEAST OF DAYTONA BEACH 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 327...WW 329...
DISCUSSION...THREATS OF ISOLATED TORNADOES AND STRONG THUNDERSTORM
WINDS ARE EXPECTED TO INCREASE THROUGH THE MORNING AHEAD OF T.S.
BARRY AND NEGATIVELY TILTED SHORTWAVE TROUGH SHEARING/MOVING SYSTEM
NEWD ACROSS FL. MID LEVEL DRY SLOT SHOULD AID HEATING TODAY AND
ALLOW MARGINAL TO MODERATE INSTABILITY TO DEVELOP ALONG AND SOUTH OF
NE-SW ORIENTED SURFACE FRONT EXTENDING FROM JUST S OF JAX TO JUST N
OF TPA THIS MORNING. THIS WILL LIKELY BOOST TORNADO POTENTIAL AS
UPDRAFTS STRENGTHEN THIS MORNING AND AFTERNOON GIVEN SIGNIFICANT LOW
LEVEL SHEAR ALREADY IN PLACE.
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 23030.
...EVANSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 11:03 PM EDT | Mesoscale Discussion | SPC | Broward, Collier, Miami-Dade, Monroe | 57 min |
| Jun 1, 11:32 PM EDT | Tornado Watch | SPC | Broward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more | 8 hr |
| Jun 2, 5:34 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Citrus, Collier, DeSoto and 25 more | 56 min |
| Jun 2, 9:04 AM EDT | Mesoscale Discussion | SPC | Broward, Collier, Glades, Hendry, Martin, Miami-Dade and 3 more | 56 min |
Nearby
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.