Alert archive / Florida / Tornado Watches in 2006
Tornado Watch 360
The Storm Prediction Center issued this tornado watch at May 16, 2006, 12:08 AM EDT for 6 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 16, 2006, 12:08 AM EDT (04:08 UTC)
- Expired
- May 16, 2006, 6:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Broward County, FL, Collier County, FL, Glades County, FL, Hendry County, FL, Miami-Dade County, FL, Palm Beach County, FL
The radar
The Miami radar (KAMX), 84 km from the middle of the area, began a volume at 04:09 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 12:16 AM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 34 min |
| May 16, 3:12 AM EDT | Severe Thunderstorm Warning | MFL | Broward | 33 min |
| May 16, 3:23 AM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade, Monroe | 67 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
Miami, FL (KMFL), launched 00:00Z, 4.1 hours before the alert went out and 91 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
- 751 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 1116 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 160406
SEL0
SPC WW 160406
FLZ000-CWZ000-161000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 360
NWS STORM PREDICTION CENTER NORMAN OK
1205 AM EDT TUE MAY 16 2006
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTH FLORIDA
COASTAL WATERS
EFFECTIVE THIS TUESDAY MORNING FROM 1205 AM UNTIL 600 AM EDT.
TORNADOES...HAIL TO 2 INCHES 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 EAST AND WEST OF A LINE FROM 50 MILES EAST NORTHEAST OF
FORT MEYERS FLORIDA TO 25 MILES SOUTHEAST OF MARATHON 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.
DISCUSSION...TSTMS/SUPERCELLS FORMING/MOVING EWD FROM THE ERN GULF
EXPECTED TO SPREAD ACROSS SW FL LATER THIS MORNING...WITH ADDITIONAL
DEVELOPMENT POSSIBLE EWD ALONG EXISTING W/E BOUNDARY TO THE E COAST.
LOW TO MID LEVEL SHEAR LIKELY WILL REMAIN MODEST IN WW AREA. BUT
PRESENT STORM STRUCTURES...AND CHARACTER/DEGREE OF ORGANIZATION OF
STORM CLUSTERS IN THE CNTRL AND ERN GULF...SUGGEST PRESENCE OF A
LARGER SCALE LOW OR MID LEVEL CIRCULATION THAT MAY YIELD SLIGHTLY
STRONGER/MORE BACKED LLJ THAN NOW FORECAST. COUPLED WITH QUALITY OF
BOUNDARY LAYER MOISTURE AVAILABILITY AND PRESENCE OF RESIDUAL
OUTFLOW BOUNDARIES...SETUP MAY SUPPORT TORNADOES IN ADDITION TO
LARGE HAIL/HIGH WIND.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26025.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 10:57 PM EDT | Mesoscale Discussion | SPC | Broward, Collier, Glades, Hendry, Lee, Martin and 3 more | 2 hr |
| May 16, 4:42 AM EDT | Mesoscale Discussion | SPC | Miami-Dade | 93 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.