Alert archive / Florida / Tornado Watches in 2005
Tornado Watch 41
The Storm Prediction Center issued this tornado watch at Feb 27, 2005, 10:40 AM EST for 21 counties in Florida. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 27, 2005, 10:40 AM EST (15:40 UTC)
- Expired
- Feb 27, 2005, 6:00 PM EST
- In force
- 7 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, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Polk County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL
The radar
The Tampa radar (KTBW), 65 km from the middle of the area, began a volume at 15:42 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 2:35 PM EST | Severe Thunderstorm Warning | TBW | Manatee, Sarasota | 27 min |
| Feb 27, 3:15 PM EST | Tornado Warning | MLB | Osceola | 30 min |
| Feb 27, 3:58 PM EST | Severe Thunderstorm Warning | MLB | Brevard | 32 min |
| Feb 27, 4:07 PM EST | Tornado Warning | MLB | Brevard | 23 min |
| Feb 27, 5:05 PM EST | Severe Thunderstorm Warning | MLB | Brevard | 13 min |
| Feb 27, 5:29 PM EST | Tornado Warning | MLB | Okeechobee, Osceola | 31 min |
| Feb 27, 5:44 PM EST | Tornado Warning | MLB | Indian River | 31 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, 3.7 hours before the alert went out and 65 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
- 40 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 271539
SEL1
SPC WW 271539
FLZ000-CWZ000-272300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 41
NWS STORM PREDICTION CENTER NORMAN OK
1040 AM EST SUN FEB 27 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL FLORIDA
COASTAL WATERS
EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1040 AM UNTIL 600
PM EST.
TORNADOES...HAIL TO 1 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 85 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 15 MILES WEST NORTHWEST OF SARASOTA
FLORIDA TO 15 MILES NORTH NORTHEAST OF MELBOURNE FLORIDA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
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...STORMS ARE EXPECTED TO GRADUALLY INCREASE IN INTENSITY
ACROSS CNTRL FL THIS AFTERNOON. BREAKS IN CLOUDS SHOULD ALLOW FOR
SOME SURFACE HEATING OVER S CNTRL FL AND CONTRIBUTE TO MARGINAL
INSTABILITY. ATMOSPHERE IS EXPECTED TO GRADUALLY DESTABILIZE NWD
WITH TIME AS BOUNDARY LIFTS SLOWLY NORTH THROUGH CNTRL FL. STRONG
SHEAR PROFILES WILL SUPPORT SUPERCELLS WITH ISOLATED TORNADOES
POSSIBLE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 25035.
...DIAL/EVANS
284,0824 293,0803 270,0803 261,0824SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 9:01 AM EST | Mesoscale Discussion | SPC | Hardee, Hillsborough, Manatee, Pinellas, Sarasota | 119 min |
| Feb 27, 11:40 AM EST | Mesoscale Discussion | SPC | Broward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach | 2 hr |
| Feb 27, 1:08 PM EST | Mesoscale Discussion | SPC | Brevard, Charlotte, DeSoto, Glades, Hardee, Hernando and 13 more | 2 hr |
| Feb 27, 4:29 PM EST | Mesoscale Discussion | SPC | Brevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 12 more | 91 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.