Alert archive / Florida / Tornado Watches in 1997

Tornado Watch 212

April 28, 199725 counties in Florida

The Storm Prediction Center issued this tornado watch at Apr 28, 1997, 12:30 PM EDT for 25 counties in Florida. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 28, 1997, 12:30 PM EDT (16:30 UTC)
Expired
Apr 28, 1997, 6:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 25 counties

Brevard County, FL, Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Flagler County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lake County, FL, Lee County, FL, Marion County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Polk County, FL, Putnam County, FL, Saint Lucie County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 97 km from the middle of the area, began a volume at 16:33 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.

Warnings issued inside it

13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 28, 1:02 PM EDTTornado WarningTBWHardee, Polk43 min
Apr 28, 1:13 PM EDTTornado WarningMLBOsceola42 min
Apr 28, 1:15 PM EDTTornado WarningTBWDeSoto, Hardee45 min
Apr 28, 1:33 PM EDTTornado WarningMLBOrange62 min
Apr 28, 1:37 PM EDTTornado WarningTBWCharlotte, Lee53 min
Apr 28, 1:39 PM EDTTornado WarningTBWHighlands66 min
Apr 28, 1:46 PM EDTTornado WarningTBWPolk59 min
Apr 28, 2:07 PM EDTTornado WarningMLBOsceola53 min
Apr 28, 2:10 PM EDTTornado WarningMLBSeminole45 min
Apr 28, 2:13 PM EDTTornado WarningMLBVolusia62 min
Apr 28, 2:33 PM EDTTornado WarningMLBBrevard62 min
Apr 28, 2:42 PM EDTSevere Thunderstorm WarningTBWLee63 min
Apr 28, 3:12 PM EDTTornado WarningMLBIndian River63 min

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 4.5 hours before the alert went out and 115 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 1997-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1286 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 1997-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 209 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1286 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
1.8
Supercell composite
8.2

Open this sounding in Storm Lab

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.

IssuedProductOfficeCountiesLasted
Apr 27, 9:00 PM EDTTornado WatchSPCBaker, Bay, Bradford, Calhoun, Clay, Columbia and 18 more6 hr
Apr 28, 3:00 AM EDTTornado WatchSPCBaker, Bay, Calhoun, Columbia, Franklin, Gadsden and 13 more6 hr

Nearby

Tornado Watches in Florida, 1997Every tornado watch in 1997

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.