Alert archive / Florida / Tornado Watches in 2022
Tornado Watch 547
The Storm Prediction Center issued this tornado watch at Sep 28, 2022, 4:31 PM EDT for 9 counties in Florida. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 28, 2022, 4:31 PM EDT (20:31 UTC)
- Expired
- Sep 29, 2022, 12:57 AM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 50 kt
Counties Brevard County, FL, Indian River County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Saint Lucie County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 32 km from the middle of the area, began a volume at 20:32 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
- 5%
- One or more gusts of 65 knots or more
- 5%
- 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
- 20%
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 |
|---|---|---|---|---|
| Sep 28, 10:21 PM EDT | Tornado Warning | MLB | Volusia | 14 min |
| Sep 28, 11:48 PM EDT | Flash Flood Warning | MLB | Orange, Osceola | 11 hr |
| Sep 29, 12:16 AM EDT | Flash Flood Warning | MLB | Osceola | 5 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 8.5 hours before the alert went out and 11 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
- 21 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 9:46 PM EDT | Mesoscale Discussion | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hardee and 14 more | 3 hr |
| Sep 28, 2:38 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 14 more | 3 hr |
| Sep 28, 4:59 AM EDT | Tornado Watch | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 16 more | 12 hr |
| Sep 28, 8:37 AM EDT | Mesoscale Discussion | SPC | Broward, Collier, DeSoto, Glades, Hardee, Hendry and 8 more | 113 min |
| Sep 28, 11:03 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Glades, Hendry, Highlands, Indian River and 8 more | 117 min |
| Sep 28, 1:18 PM EDT | Mesoscale Discussion | SPC | Indian River, Okeechobee, Osceola, Polk, Saint Lucie | 117 min |
| Sep 28, 3:54 PM EDT | Mesoscale Discussion | SPC | Brevard, Indian River, Martin, Orange, Osceola, Saint Lucie and 2 more | 96 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.