Alert archive / Florida / Tornado Watches in 2005
Tornado Watch 837
The Storm Prediction Center issued this tornado watch at Oct 23, 2005, 9:25 PM EDT for 30 counties in Florida. It was in force for 14 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 23, 2005, 9:25 PM EDT (01:25 UTC)
- Expired
- Oct 24, 2005, 11:00 AM EDT
- In force
- 14 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Brevard County, FL, 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, Indian River County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach 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 Tampa radar (KTBW), 111 km from the middle of the area, began a volume at 01:25 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
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 9:41 PM EDT | Tornado Warning | MLB | Brevard | 49 min |
| Oct 23, 10:04 PM EDT | Tornado Warning | TBW | Polk | 26 min |
| Oct 23, 10:49 PM EDT | Tornado Warning | MLB | Lake | 56 min |
| Oct 23, 11:42 PM EDT | Tornado Warning | MLB | Lake | 63 min |
| Oct 24, 12:38 AM EDT | Tornado Warning | EYW | Monroe | 52 min |
| Oct 24, 1:26 AM EDT | Tornado Warning | MLB | Orange | 49 min |
| Oct 24, 2:14 AM EDT | Tornado Warning | MFL | Collier | 53 min |
| Oct 24, 2:45 AM EDT | Tornado Warning | MLB | Osceola | 45 min |
| Oct 24, 3:50 AM EDT | Tornado Warning | MLB | Osceola | 40 min |
| Oct 24, 3:50 AM EDT | Tornado Warning | TBW | Polk | 25 min |
| Oct 24, 4:26 AM EDT | Tornado Warning | MLB | Brevard | 34 min |
| Oct 24, 4:36 AM EDT | Tornado Warning | TBW | Polk | 24 min |
| Oct 24, 4:45 AM EDT | Tornado Warning | MFL | Collier, Monroe | 91 min |
| Oct 24, 5:18 AM EDT | Tornado Warning | MLB | Orange, Osceola | 42 min |
| Oct 24, 5:49 AM EDT | Tornado Warning | TBW | Highlands | 26 min |
| Oct 24, 6:01 AM EDT | Tornado Warning | MLB | Orange, Osceola | 44 min |
| Oct 24, 6:55 AM EDT | Tornado Warning | MLB | Brevard | 65 min |
| Oct 24, 7:40 AM EDT | Tornado Warning | MLB | Brevard, Indian River | 50 min |
| Oct 24, 7:52 AM EDT | Tornado Warning | MLB | Osceola | 38 min |
| Oct 24, 10:26 AM EDT | Flash Flood Warning | MLB | Brevard, Orange, Osceola | 4 hr |
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 00:00Z, 1.4 hours before the alert went out and 111 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
- 511 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 774 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 240129
SEL7
SPC WW 240129
FLZ000-CWZ000-241500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 837
NWS STORM PREDICTION CENTER NORMAN OK
925 PM EDT SUN OCT 23 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND SOUTHERN FLORIDA
COASTAL WATERS
EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 925 PM UNTIL
1100 AM EDT.
TORNADOES...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE MILES
EITHER SIDE OF A LINE FROM 45 MILES WEST NORTHWEST OF ORLANDO
FLORIDA TO 80 MILES SOUTH OF MIAMI FLORIDA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU7).
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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 836. WATCH NUMBER 836 WILL NOT BE IN EFFECT AFTER 925
PM EDT.
DISCUSSION...HURRICANE WILMA WILL BE CROSSING SRN FL LATER TONIGHT
AND MON AM. STRONG SHEAR ALREADY IN PLACE ACROSS SRN FL AND WILL
ONLY INCREASE AS WILMA APPROACHES. WITH 0OZ SRN FL SOUNDINGS
INDICATING A MDTLY UNSTABLE TROPICAL AIR MASS...THE TORNADO
POTENTIAL EXPECTED TO INCREASE REMAINDER OF THE NIGHT AS SHEAR
BECOMES VERY STRONG.
THE FORECAST MAXIMUM WIND GUSTS AND MEAN CELL MOTION APPLY TO SEVERE
THUNDERSTORMS OUTSIDE THE HURRICANE EYEWALL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 18045.
...HALES
291,0805 250,0790 241,0812 282,0830SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 8:48 PM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 20 more | 117 min |
| Oct 23, 11:13 PM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 21 more | 2 hr |
| Oct 24, 4:28 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 24 more | 107 min |
| Oct 24, 8:16 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 16 more | 89 min |
| Oct 24, 10:57 AM EDT | Mesoscale Discussion | SPC | Brevard, Indian River | 63 min |
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.