Alert archive / Florida / Tornado Watches in 1998
Tornado Watch 51
The Storm Prediction Center issued this tornado watch at Feb 20, 1998, 3:00 AM EST for 18 counties in Florida. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 20, 1998, 3:00 AM EST (08:00 UTC)
- Expired
- Feb 20, 1998, 7:00 AM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
Counties Brevard 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, Okeechobee County, FL, Osceola County, FL, Palm Beach County, FL, Polk County, FL, Saint Lucie County, FL, Sarasota County, FL
The radar
The Tampa radar (KTBW), 91 km from the middle of the area, began a volume at 08:00 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.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 00:00Z, 8.0 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
- 762 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 786 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 7.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 9:00 PM EST | Tornado Watch | SPC | Brevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 13 more | 6 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.