Alert archive / Florida / Tornado Watches in 1997
Tornado Watch 191
The Storm Prediction Center issued this tornado watch at Apr 23, 1997, 11:45 AM EDT for 25 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 1997, 11:45 AM EDT (15:45 UTC)
- Expired
- Apr 23, 1997, 6:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 25 counties
Brevard County, FL, Charlotte County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando 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, Sumter County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 62 km from the middle of the area, began a volume at 15:47 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
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 11:52 AM EDT | Severe Thunderstorm Warning | MLB | Osceola | 63 min |
| Apr 23, 11:59 AM EDT | Severe Thunderstorm Warning | TBW | Polk | 61 min |
| Apr 23, 12:04 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 56 min |
| Apr 23, 12:26 PM EDT | Tornado Warning | TBW | Hillsborough | 49 min |
| Apr 23, 12:27 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 58 min |
| Apr 23, 12:33 PM EDT | Severe Thunderstorm Warning | TBW | Manatee | 57 min |
| Apr 23, 12:51 PM EDT | Severe Thunderstorm Warning | MLB | Indian River, Osceola | 64 min |
| Apr 23, 12:59 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 61 min |
| Apr 23, 1:20 PM EDT | Tornado Warning | MLB | Indian River | 50 min |
| Apr 23, 1:20 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Pinellas | 55 min |
| Apr 23, 2:05 PM EDT | Severe Thunderstorm Warning | TBW | Hardee | 55 min |
| Apr 23, 2:22 PM EDT | Severe Thunderstorm Warning | TBW | Manatee | 53 min |
| Apr 23, 2:30 PM EDT | Severe Thunderstorm Warning | TBW | Highlands | 60 min |
| Apr 23, 2:33 PM EDT | Tornado Warning | TBW | Sarasota | 42 min |
| Apr 23, 3:12 PM EDT | Severe Thunderstorm Warning | TBW | Manatee, Sarasota | 63 min |
| Apr 23, 3:45 PM EDT | Severe Thunderstorm Warning | TBW | DeSoto, Hardee, Highlands | 60 min |
| Apr 23, 4:11 PM EDT | Severe Thunderstorm Warning | TBW | Charlotte, Sarasota | 64 min |
| Apr 23, 4:52 PM EDT | Severe Thunderstorm Warning | TBW | DeSoto, Highlands | 68 min |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 3.8 hours before the alert went out and 116 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
- 2247 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 9.4
The text
As transmitted, in the capitals the NWS used until 2016.
023 WWUS9 KMKC 231526 SEL1 MKC WW 231526 FLZ000-232200- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 191 STORM PREDICTION CENTER NORMAN OK 1126 AM EDT WED APR 23 1997 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR ALL OR PORTIONS OF CENTRAL AND SOUTHERN FLORIDA AND ADJACENT COASTAL WATERS EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1145 AM UNTIL 600 PM EDT. THIS IS A PARTICULARLY DANGEROUS SITUATION WITH THE POSSIBILITY OF VERY DAMAGING TORNADOES. ALSO...LARGE HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EITHER SIDE OF A LINE FROM 45 MILES WEST NORTHWEST OF ORLANDO FLORIDA TO 65 MILES EAST OF FORT MEYERS FLORIDA. OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 190. WATCH NUMBER 190 WILL NOT BE IN EFFECT AFTER 1145 AM EDT. 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...SEVERE THUNDERSTORMS...WITH A HISTORY OF DAMAGING TORNADOES...WILL CONTIUE AS OUTFLOW BOUNDARY MOVES INTO REGION OF VERY UNSTABLE AIR. 40 KT LOW LEVEL JET COMBINED WITH 60 KT MID LEVEL FLOW WILL PROVIDE FAVORABLE SHEAR FOR CONTINUED TORNADO THREAT AS CAPES FROM 3000 TO 4000 J/KG. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26030. ...ROGASH 292,0804 270,0793 260,0820 281,0831
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 10:00 PM EDT | Tornado Watch | SPC | Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton and 1 more | 6 hr |
| Apr 23, 3:00 AM EDT | Tornado Watch | SPC | Baker, Bradford, Calhoun, Clay, Columbia, Dixie and 17 more | 6 hr |
| Apr 23, 8:00 AM EDT | Tornado Watch | SPC | Alachua, Bradford, Brevard, Citrus, Clay, Dixie and 20 more | 6 hr |
| Apr 23, 5:00 PM EDT | Tornado Watch | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hardee and 11 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.