Alert archive / Florida / Tornado Watches in 1997
Tornado Watch 781
The Storm Prediction Center issued this tornado watch at Oct 27, 1997, 10:00 AM EST for 21 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 27, 1997, 10:00 AM EST (15:00 UTC)
- Expired
- Oct 27, 1997, 4:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Brevard County, FL, Charlotte County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Saint Lucie County, FL, Sarasota County, FL, Seminole County, FL
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 |
|---|---|---|---|---|
| Oct 27, 10:01 AM EST | Severe Thunderstorm Warning | TBW | Polk | 29 min |
| Oct 27, 10:07 AM EST | Tornado Warning | MLB | Osceola | 58 min |
| Oct 27, 10:27 AM EST | Severe Thunderstorm Warning | TBW | Hillsborough, Manatee | 48 min |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 3.0 hours before the alert went out and 55 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
- 2501 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 494 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
818 WWUS9 KMKC 271426 SEL1 MKC WW 271426 FLZ000-272100- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 781 STORM PREDICTION CENTER NORMAN OK 926 AM EST MON OCT 27 1997 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL FLORIDA AND ADJACENT COASTAL WATERS EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1000 AM UNTIL 400 PM EST. TORNADOES...HAIL TO 1 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EITHER SIDE OF A LINE FROM 10 MILES WEST SOUTHWEST OF SARASOTA FLORIDA TO 15 MILES EAST SOUTHEAST OF MELBOURNE FLORIDA. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DISCUSSION...THUNDERSTORMS INCREASING OVER CENTRAL FLORIDA AND EASTERN GULF AS COLD FRONT ADVANCES INTO REGION OF 2000 TO 3000 J/KG CAPES. WIND SHEAR PROFILES FAVOR DAMAGING DOWNBURSTS AND ISOLATED TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24045. ...ROGASH 282,0830 290,0804 265,0800 261,0821
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 11:00 PM EST | Severe Thunderstorm Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 13 more | 5 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.