Alert archive / Florida / Tornado Watches in 2004
Tornado Watch 823
The Storm Prediction Center issued this tornado watch at Sep 15, 2004, 12:00 PM CDT for Baldwin County, Mobile County, Alabama; 14 counties in Florida. It was in force for 10 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 15, 2004, 12:00 PM CDT (17:00 UTC)
- Expired
- Sep 15, 2004, 10:00 PM CDT
- In force
- 10 hr
- Issued by
- the Storm Prediction Center
Counties Baldwin County, AL, Mobile County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 1:35 PM CDT | Tornado Warning | TAE | Bay | 40 min |
| Sep 15, 1:37 PM CDT | Tornado Warning | MOB | Baldwin | 53 min |
| Sep 15, 2:46 PM CDT | Tornado Warning | TAE | Gulf | 29 min |
| Sep 15, 2:54 PM CDT | Tornado Warning | MOB | Escambia, Santa Rosa | 36 min |
| Sep 15, 3:17 PM CDT | Tornado Warning | TAE | Gulf | 43 min |
| Sep 15, 3:39 PM CDT | Tornado Warning | TAE | Bay | 51 min |
| Sep 15, 4:10 PM CDT | Tornado Warning | TAE | Walton | 50 min |
| Sep 15, 4:46 PM CDT | Tornado Warning | TAE | Leon | 29 min |
| Sep 15, 4:52 PM CDT | Tornado Warning | TAE | Gulf | 23 min |
| Sep 15, 5:09 PM CDT | Tornado Warning | TAE | Bay, Calhoun, Gulf | 51 min |
| Sep 15, 5:27 PM CDT | Tornado Warning | TAE | Franklin, Gulf | 48 min |
| Sep 15, 5:52 PM CDT | Tornado Warning | TAE | Holmes, Walton, Washington | 38 min |
| Sep 15, 6:06 PM CDT | Tornado Warning | TAE | Bay, Calhoun, Washington | 39 min |
| Sep 15, 6:14 PM CDT | Tornado Warning | TAE | Bay, Calhoun, Gulf | 46 min |
| Sep 15, 6:48 PM CDT | Tornado Warning | TAE | Liberty | 27 min |
| Sep 15, 7:01 PM CDT | Tornado Warning | TAE | Bay, Calhoun | 29 min |
| Sep 15, 7:14 PM CDT | Tornado Warning | TAE | Calhoun, Gulf, Liberty | 46 min |
| Sep 15, 7:29 PM CDT | Tornado Warning | TAE | Bay, Washington | 31 min |
| Sep 15, 7:56 PM CDT | Tornado Warning | TAE | Holmes | 34 min |
| Sep 15, 7:56 PM CDT | Tornado Warning | TAE | Jackson | 49 min |
| Sep 15, 8:24 PM CDT | Tornado Warning | TAE | Liberty | 51 min |
| Sep 15, 9:08 PM CDT | Tornado Warning | TAE | Calhoun, Jackson, Liberty | 52 min |
| Sep 15, 9:27 PM CDT | Tornado Warning | TAE | Franklin, Liberty | 48 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.0 hours before the alert went out and 222 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
- 577 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 673 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 167 m²/s²
- 0-3 km storm-relative helicity
- 250 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 151659
SEL3
SPC WW 151700
ALZ000-FLZ000-CWZ000-160300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 823
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT WED SEP 15 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
FAR SOUTHERN ALABAMA
FLORIDA PANHANDLE
COASTAL WATERS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM NOON UNTIL
1000 PM CDT.
TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 40 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 5 MILES SOUTH SOUTHWEST OF MOBILE ALABAMA TO
20 MILES SOUTHEAST OF TALLAHASSEE 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.
DISCUSSION...OUTERBANDS BANDS OF IVAN WILL CONTINUE TO LIFT NWD AND
ROTATE ACROSS THE FL PANHANDLE AND FAR SRN AL THROUGH THE MID
EVENING. VERY STRONG SHEAR WILL SUPPORT SUPERCELLS AND A THREAT OF
TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 16035.
...EVANS
311,0881 304,0840 293,0840 300,0881SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 11:17 AM CDT | Mesoscale Discussion | SPC | Baldwin, Geneva | 88 min |
| Sep 15, 3:50 PM CDT | Tornado Watch | SPC | Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 19 more | 10 hr |
Nearby
Tornado Watches in Florida, 2004Tornado Watches in Alabama, 2004Every tornado watch in 2004
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.