Alert archive / Florida / Tornado Watches in 2008
Tornado Watch 940
The Storm Prediction Center issued this tornado watch at Nov 30, 2008, 1:05 PM EST for 19 counties in Florida. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 30, 2008, 1:05 PM EST (18:05 UTC)
- Expired
- Nov 30, 2008, 8:46 PM EST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
Counties Brevard County, FL, Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lee County, FL, Manatee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Palm Beach County, FL, Saint Lucie County, FL, Sarasota County, FL
The radar
The Miami radar (KAMX), 142 km from the middle of the area, began a volume at 18:08 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
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 30, 1:49 PM EST | Tornado Warning | MLB | Brevard, Volusia | 31 min |
| Nov 30, 2:50 PM EST | Severe Thunderstorm Warning | MLB | Brevard, Osceola | 55 min |
| Nov 30, 2:59 PM EST | Severe Thunderstorm Warning | MLB | Indian River, Okeechobee | 48 min |
| Nov 30, 3:09 PM EST | Severe Thunderstorm Warning | MLB | Brevard | 36 min |
| Nov 30, 3:45 PM EST | Severe Thunderstorm Warning | MLB | Brevard, Indian River, Okeechobee, Saint Lucie | 45 min |
| Nov 30, 4:32 PM EST | Severe Thunderstorm Warning | MLB | Martin, Saint Lucie | 56 min |
| Nov 30, 7:12 PM EST | Severe Thunderstorm Warning | KEY | Monroe | 63 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 12:00Z, 6.1 hours before the alert went out and 133 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
- 107 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 887 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 227 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 30, 3:46 AM EST | Mesoscale Discussion | SPC | Columbia, Franklin, Hamilton, Jefferson, Lafayette, Leon and 4 more | 89 min |
| Nov 30, 4:59 AM EST | Tornado Watch | SPC | Columbia, Dixie, Franklin, Gilchrist, Hamilton, Jefferson and 6 more | 7 hr |
| Nov 30, 7:54 AM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Columbia, Dixie, Gilchrist and 4 more | 96 min |
| Nov 30, 9:51 AM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Duval and 18 more | 7 hr |
| Nov 30, 12:24 PM EST | Mesoscale Discussion | SPC | Flagler, Hillsborough, Lake, Marion, Orange, Osceola and 6 more | 96 min |
| Nov 30, 3:53 PM EST | Mesoscale Discussion | SPC | Broward, Collier, Hendry, Martin, Miami-Dade, Monroe and 2 more | 2 hr |
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.