Alert archive / Florida / Tornado Watches in 2005
Tornado Watch 836
The Storm Prediction Center issued this tornado watch at Oct 23, 2005, 3:40 PM EDT for 20 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 23, 2005, 3:40 PM EDT (19:40 UTC)
- Expired
- Oct 23, 2005, 9:19 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Miami-Dade County, FL, Monroe County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL
The radar
The Tampa radar (KTBW), 84 km from the middle of the area, began a volume at 19:40 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 5:48 PM EDT | Tornado Warning | TBW | Hardee, Hillsborough, Manatee, Polk | 27 min |
| Oct 23, 6:18 PM EDT | Tornado Warning | TBW | Sarasota | 27 min |
| Oct 23, 7:13 PM EDT | Tornado Warning | TBW | Polk | 47 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 7.7 hours before the alert went out and 84 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
- 1164 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 809 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 231941
SEL6
SPC WW 231941
FLZ000-CWZ000-240500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 836
NWS STORM PREDICTION CENTER NORMAN OK
340 PM EDT SUN OCT 23 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN AND CENTRAL FLORIDA
COASTAL WATERS
EFFECTIVE THIS SUNDAY AFTERNOON AND MONDAY MORNING FROM 340 PM
UNTIL 100 AM EDT.
TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 145 STATUTE
MILES EITHER SIDE OF A LINE FROM 45 MILES SOUTHEAST OF AVON PARK
FLORIDA TO 55 MILES WEST SOUTHWEST OF FORT MEYERS FLORIDA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).
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...THREAT APPEARS TO BE INCREASING ATTM FOR MINISUPERCELLS
WITH TORNADOES AS OUTERMOST CONFLUENCE BANDS ASSOCIATED WITH HRCN
WILMA APPROACH EYW. THREAT MAY ALSO INCREASE THIS EVENING FOR LOW
LEVEL ROTATION IN ISOLATED STORMS NOW FORMING IN HEATED ENVIRONMENT
OVER SRN PARTS OF THE FL PENINSULA...WHERE LOW LEVEL SHEAR LIKELY
WILL SUBSTANTIALLY INCREASE.
AN ADDITIONAL WATCH LIKELY WILL BE REQUIRED LATER THIS EVENING TO
COVER E CNTRL FL...AND TO EXTEND WATCH COVERAGE INTO LATER MONDAY
MORNING ACROSS S FL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 18045.
...CORFIDI
251,0794 242,0813 280,0834 290,0815SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 2:59 PM EDT | Mesoscale Discussion | SPC | Charlotte, Collier, Hendry, Lee, Miami-Dade, Monroe | 2 hr |
| Oct 23, 6:57 PM EDT | Mesoscale Discussion | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hardee and 17 more | 2 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.