Alert archive / Florida / Tornado Watches in 2001
Tornado Watch 791
The Storm Prediction Center issued this tornado watch at Oct 13, 2001, 9:45 PM CDT for 6 counties in Alabama; 9 counties in Florida; Seminole County, Georgia. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2001, 9:45 PM CDT (02:45 UTC)
- Expired
- Oct 14, 2001, 1:00 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
Counties Coffee County, AL, Covington County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Walton County, FL, Washington County, FL, Seminole County, GA
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 10:12 PM CDT | Tornado Warning | TAE | Bay, Holmes, Walton, Washington | 33 min |
| Oct 13, 10:49 PM CDT | Tornado Warning | TAE | Bay, Washington | 41 min |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 2.8 hours before the alert went out and 119 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1342 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
271 WWUS9 KMKC 140228 SEL1 SEL1 MKC WW 140221 ALZ000-FLZ000-CWZ000-140600- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 791 STORM PREDICTION CENTER NORMAN OK 921 PM CDT SAT OCT 13 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHEAST ALABAMA NORTHWEST FLORIDA COASTAL WATERS EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 945 PM UNTIL 100 AM CDT. 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 ALONG AND 50 STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF DOTHAN ALABAMA TO 15 MILES SOUTHWEST OF APALACHICOLA 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... CONTINUE...WW 790... DISCUSSION...SMALL SUPERCELL THUNDERSTORMS CONTINUE TO DEVELOP OVER THE COASTAL WATERS OF THE GULF AND MOVE RAPIDLY NNEWD INTO NWRN FL...WHILE LINE OF STRONG/SEVERE STORMS OVER SRN AL/EXTREME NWRN FL IS MOVING ENEWD 40 KT. ALTHOUGH INSTABILITY DIMINISHES AWAY FROM COASTAL AREAS...VAD WINDS FROM AREA RADARS SHOW 50 KT FLOW WITHIN 1 KM AGL AND VEERING PROFILES WITH HEIGHT RESULTING IN VERY STRONG LOW LEVEL SHEAR/HELICITY. THIS SUGGESTS POTENTIAL FOR ISOLATED TORNADOES OVER THE NEXT SEVERAL HOURS. 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 450. MEAN STORM MOTION VECTOR 21045. ...WEISS 314,0850 293,0842 293,0860 314,0864
Nearby
Tornado Watches in Florida, 2001Tornado Watches in Alabama, 2001Tornado Watches in Georgia, 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.