Alert archive / Florida / Tornado Watches in 2000
Tornado Watch 741
The Storm Prediction Center issued this tornado watch at Sep 17, 2000, 8:00 AM EDT for 8 counties in Florida. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 17, 2000, 8:00 AM EDT (12:00 UTC)
- Expired
- Sep 17, 2000, 11:00 AM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
Counties Brevard County, FL, Highlands County, FL, Indian River County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Saint Lucie County, FL
The radar
The Melbourne radar (KMLB), 48 km from the middle of the area, began a volume at 12:01 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 8:55 AM EDT | Tornado Warning | MLB | Okeechobee, Osceola | 50 min |
| Sep 17, 9:19 AM EDT | Tornado Warning | MLB | Martin | 41 min |
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 0.0 hours before the alert went out and 83 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
- 513 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 744 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 557 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
018 WWUS9 KMKC 171146 SEL1 SEL1 MKC WW 171141 FLZ000-CWZ000-171500- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 741 STORM PREDICTION CENTER NORMAN OK 741 AM EDT SUN SEP 17 2000 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EASTERN FLORIDA COASTAL WATERS EFFECTIVE THIS SUNDAY MORNING FROM 800 AM UNTIL 1100 AM EDT. TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 35 STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES EAST NORTHEAST OF ORLANDO FLORIDA TO 50 MILES SOUTH SOUTHWEST OF VERO BEACH 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. OTHER WATCH INFORMATION... CONTINUE...WW 740... DISCUSSION...ROTATING STORMS MAY PRODUCE TORNADOES AS THEY APPROACH AND CROSS BOUNDARY ACROSS EAST CENTRAL FL. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 18035. ...JOHNS 265,0811 283,0814 283,0803 265,0800
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 4:30 AM EDT | Tornado Watch | SPC | Charlotte, Collier, DeSoto, Hardee, Hendry, Highlands and 6 more | 7 hr |
| Sep 17, 11:00 AM EDT | Tornado Watch | SPC | Alachua, Bradford, Brevard, Broward, Charlotte, Citrus and 35 more | 9 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.