Alert archive / Florida / Tornado Watches in 2005
Tornado Watch 75
The Storm Prediction Center issued this tornado watch at Mar 23, 2005, 4:50 AM EST for 15 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2005, 4:50 AM EST (09:50 UTC)
- Expired
- Mar 23, 2005, 11:00 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Citrus County, FL, Hardee County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Manatee County, FL, Marion County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL
The radar
The Tampa radar (KTBW), 61 km from the middle of the area, began a volume at 09:51 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 5:39 AM EST | Tornado Warning | TBW | Hernando, Pasco | 25 min |
| Mar 23, 5:57 AM EST | Tornado Warning | MLB | Lake | 33 min |
| Mar 23, 6:17 AM EST | Severe Thunderstorm Warning | MLB | Lake, Orange | 47 min |
| Mar 23, 6:28 AM EST | Severe Thunderstorm Warning | MLB | Volusia | 32 min |
| Mar 23, 8:40 AM EST | Severe Thunderstorm Warning | TBW | Hillsborough | 37 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 00:00Z, 9.8 hours before the alert went out and 61 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
- 700 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 230952
SEL5
SPC WW 230952
FLZ000-CWZ000-231600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 75
NWS STORM PREDICTION CENTER NORMAN OK
450 AM EST WED MAR 23 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL FLORIDA
COASTAL WATERS
EFFECTIVE THIS WEDNESDAY MORNING FROM 450 AM UNTIL 1100 AM EST.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF DAYTONA
BEACH FLORIDA TO 25 MILES EAST OF SARASOTA FLORIDA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).
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 73...WW 74...
DISCUSSION...BOW ECHO -- NW OF TBW AS OF 945Z -- IS EXPECTED TO MOVE
ONSHORE AND ENEWD ALONG BOUNDARY PRODUCED BY EARLIER/ONGOING
CONVECTION...WITH POTENTIAL FOR DAMAGING GUSTS AND PERHAPS TORNADOES
AS IT CROSSES PENINSULA. OTHER ACTIVITY FARTHER SW SUBSEQUENTLY MAY
MOVE ONSHORE AS FAR S AS SRQ AREA...ALSO WITH DAMAGING WIND AND
TORNADO RISK.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25035.
...EDWARDS
292,0803 272,0810 272,0830 292,0823SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 8:39 PM EST | Mesoscale Discussion | SPC | Calhoun, Gadsden, Gulf, Jackson, Jefferson, Leon and 4 more | 36 min |
| Mar 23, 12:37 AM EST | Mesoscale Discussion | SPC | Holmes | 83 min |
| Mar 23, 2:17 AM EST | Mesoscale Discussion | SPC | Citrus, Flagler, Hernando, Lake, Marion, Orange and 7 more | 118 min |
| Mar 23, 2:35 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 6 more | 85 min |
| Mar 23, 6:21 AM EST | Mesoscale Discussion | SPC | Citrus, Hardee, Hernando, Hillsborough, Lake, Manatee and 9 more | 114 min |
| Mar 23, 8:46 AM EST | Mesoscale Discussion | SPC | Broward, Charlotte, Citrus, Collier, DeSoto, Glades and 23 more | 59 min |
| Mar 23, 10:46 AM EST | Mesoscale Discussion | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 11 more | 29 min |
| Mar 23, 2:20 PM EST | Mesoscale Discussion | SPC | Broward, Charlotte, Collier, Glades, Hendry, Lee and 4 more | 85 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.