Alert archive / Florida / Tornado Watches in 2001
Tornado Watch 655
The Storm Prediction Center issued this tornado watch at Aug 5, 2001, 10:45 PM CDT for Geneva County, Alabama; 16 counties in Florida; Decatur County, Seminole County, Georgia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2001, 10:45 PM CDT (03:45 UTC)
- Expired
- Aug 6, 2001, 6:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Geneva County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Decatur County, GA, Seminole County, GA
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.8 hours before the alert went out and 97 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
- 763 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 471 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 236 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
852 WWUS9 KMKC 060339 SEL5 MKC WW 060330 ALZ000-FLZ000-GAZ000-CWZ000-061100- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 655 STORM PREDICTION CENTER NORMAN OK 1130 PM EDT SUN AUG 5 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EXTREME SOUTHEAST ALABAMA THE FLORIDA PANHANDLE EXTREME SOUTHWEST GEORGIA ADJACENT COASTAL WATERS EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1145 PM UNTIL 700 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 ALONG AND 45 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTH SOUTHWEST OF CRESTVIEW FLORIDA TO 65 MILES EAST SOUTHEAST OF TALAHASSEE 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. OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 654. WATCH NUMBER 654 WILL NOT BE IN EFFECT AFTER 1145 PM EDT. DISCUSSION...TROPICAL STORM BARRY IS APPROACHING THE FL PANHANDLE ...AND IS FORECAST TO MOVE INLAND OVERNIGHT. LOCAL VWP WINDS FROM KTLH AND KEVX BOTH SHOW THAT LOW-LEVEL WINDS/SHEAR HAVE INCREASED THE PAST SEVERAL HOURS...WITH ESTIMATED 0-1 KM SRH VALUES OF 250- 300 M2/S2. EXPECT THE TORNADO THREAT TO BE LOCALLY GREATEST WHERE DISCRETE CELLS E OF THE CENTER INTERACT WITH A WEAK RAIN-COOLED BOUNDARY THAT SHOULD MOVE NWD OVERNIGHT. 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 16030. ...THOMPSON 311,0863 304,0832 292,0832 295,0863
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 4:00 AM CDT | Tornado Watch | SPC | Autauga, Barbour, Bullock, Butler, Coffee, Covington and 11 more | 6 hr |
| Aug 6, 10:00 AM CDT | Tornado Watch | SPC | Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 27 more | 9 hr |
Nearby
Tornado Watches in Florida, 2001Tornado Watches in Georgia, 2001Tornado Watches in Alabama, 2001Every tornado watch in 2001
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.