Alert archive / Florida / Tornado Warnings in 1997
Tornado Warning 28, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this tornado warning at Jun 11, 1997, 6:34 PM EDT for Polk County, Florida. It was in force for 31 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 11, 1997, 6:34 PM EDT (22:34 UTC)
- Expired
- Jun 11, 1997, 7:05 PM EDT
- In force
- 31 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
The radar
The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 22:35 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 6:40 PM EDT | Tornado F0 | Auburndale, FL | A weak short-lived tornado touched down and caused minor roof damage to a few homes, carports, porches and downed a couple of trees and power lines, in the Sun Acres area near County Road 542 and Thornhill Road. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 10.6 hours before the alert went out and 74 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
- 733 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTBW 112237 RRA TORTBW FLC105-112305- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 634 PM EDT WED JUN 11 1997 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 705 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION(S) IN CENTRAL FLORIDA ...POLK COUNTY AT 633 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING TORNADO OVER POLK COUNTY...NEAR AURBURNDALE. THE STORM WAS MOVING TOWARD THE SOUTHEAST AT 15 MPH. THIS STORM WILL BE AFFECTING THE WINTER HAVEN AREA BY 645 PM. A DOPPLER RADAR DETECTED TORNADO MEANS THAT THERE IS STRONG ROTATION WITHIN A STORM. THE STORM MAY NOT BE PRODUCING A TORNADO AT THE MOMENT...BUT WILL LIKELY DURING THE WARNING PERIOD. THE STORM MAY ALSO INCLUDE HAIL AND DAMAGING STRAIGHT LINE WIND. THOSE IN THE PATH OF THE STORM ARE ADVISED TO TAKE COVER IMMEDIATELY. THE NATIONAL WEATHER SERVICE IN RUSKIN REQUESTS THAT SKYWARN ZUNITS IN THE COUNTY BE ACTIVATED AND FORWARD ALL SIGNIFICANT WEATHER REPORTS TO OUR OFFICE.
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 2:29 PM EDT | Tornado Warning | TBW | Lee | 46 min |
| Jun 11, 4:44 PM EDT | Severe Thunderstorm Warning | TBW | Highlands | 46 min |
| Jun 11, 7:05 PM EDT | Tornado Warning | TBW | Polk | 30 min |
Nearby
Tornado Warnings in Florida, 1997Every tornado warning in 1997Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.