Alert archive / Florida / Tornado Watches in 2019
Tornado Watch 675
The Storm Prediction Center issued this tornado watch at Oct 19, 2019, 1:52 AM EDT for 29 counties in Florida. It was in force for 12 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 19, 2019, 1:52 AM EDT (05:52 UTC)
- Expired
- Oct 19, 2019, 1:59 PM EDT
- In force
- 12 hr
- Issued by
- the Storm Prediction Center
- Strongest gust expected
- 50 kt
All 29 counties
Alachua County, FL, Bradford County, FL, Brevard County, FL, Charlotte County, FL, Citrus County, FL, Clay County, FL, DeSoto County, FL, Flagler County, FL, Gilchrist County, FL, Hardee County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lake County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Marion 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), 40 km from the middle of the area, began a volume at 05:53 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 19, 3:20 AM EDT | Tornado Warning | TBW | Sarasota | 40 min |
| Oct 19, 4:13 AM EDT | Severe Thunderstorm Warning | TBW | Charlotte, Sarasota | 32 min |
| Oct 19, 4:17 AM EDT | Tornado Warning | TBW | Charlotte, Sarasota | 28 min |
| Oct 19, 5:59 AM EDT | Tornado Warning | TBW | Charlotte, Sarasota | 31 min |
| Oct 19, 8:24 AM EDT | Severe Thunderstorm Warning | JAX | Saint Johns | 36 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, 5.9 hours before the alert went out and 40 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
- 491 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 808 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 310 m²/s²
- 0-3 km storm-relative helicity
- 432 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 10:54 PM EDT | Mesoscale Discussion | SPC | Hillsborough, Orange, Osceola, Pasco, Polk | 2 hr |
| Oct 19, 1:26 AM EDT | Mesoscale Discussion | SPC | Brevard, Citrus, Hardee, Hernando, Hillsborough, Lake and 11 more | 64 min |
| Oct 19, 5:01 AM EDT | Mesoscale Discussion | SPC | Brevard, Charlotte, Citrus, DeSoto, Flagler, Glades and 17 more | 89 min |
| Oct 19, 8:49 AM EDT | Mesoscale Discussion | SPC | Alachua, Bradford, Brevard, Charlotte, Citrus, Clay and 25 more | 86 min |
| Oct 19, 9:00 AM EDT | Mesoscale Discussion | SPC | Franklin, Gulf, Taylor, Wakulla | 90 min |
| Oct 19, 11:17 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Brevard, Charlotte, Citrus and 42 more | 58 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.