Alert archive / Florida / Tornado Watches in 2013
Tornado Watch 46
The Storm Prediction Center issued this tornado watch at Feb 26, 2013, 6:49 AM EST for 37 counties in Florida; 14 counties in Georgia. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 26, 2013, 6:49 AM EST (11:49 UTC)
- Expired
- Feb 26, 2013, 2:57 PM EST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 70 kt
All 51 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Brevard County, FL, Charlotte County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, DeSoto County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton 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, Marion County, FL, Nassau County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Suwannee County, FL, Union County, FL, Volusia County, FL, Brantley County, GA, Bryan County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Echols County, GA, Glynn County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA
The radar
The Jacksonville radar (KJAX), 52 km from the middle of the area, began a volume at 11:52 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 7:25 AM EST | Severe Thunderstorm Warning | TBW | Citrus, Levy | 65 min |
| Feb 26, 7:37 AM EST | Severe Thunderstorm Warning | JAX | Columbia, Gilchrist, Suwannee, Union | 68 min |
| Feb 26, 8:12 AM EST | Severe Thunderstorm Warning | JAX | Alachua, Bradford, Gilchrist, Marion, Union | 48 min |
| Feb 26, 8:19 AM EST | Severe Thunderstorm Warning | JAX | Baker | 41 min |
| Feb 26, 8:49 AM EST | Severe Thunderstorm Warning | JAX | Alachua, Marion, Putnam | 56 min |
| Feb 26, 9:00 AM EST | Severe Thunderstorm Warning | JAX | Alachua, Bradford, Clay, Putnam, Union | 60 min |
| Feb 26, 10:12 AM EST | Tornado Warning | JAX | Flagler, Putnam, Saint Johns | 48 min |
| Feb 26, 10:40 AM EST | Tornado Warning | MLB | Lake | 20 min |
| Feb 26, 11:12 AM EST | Severe Thunderstorm Warning | TBW | Hillsborough | 33 min |
| Feb 26, 11:22 AM EST | Tornado Warning | MLB | Lake | 38 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
Jacksonville, FL (KJAX), launched 00:00Z, 11.8 hours before the alert went out and 53 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
- 435 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
569
WWUS20 KWNS 261152
SEL6
SPC WW 261152
FLZ000-GAZ000-CWZ000-262000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 46
NWS STORM PREDICTION CENTER NORMAN OK
650 AM EST TUE FEB 26 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN...CENTRAL AND NORTHERN FLORIDA
SOUTHEASTERN GEORGIA
COASTAL WATERS
EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 650 AM UNTIL
300 PM EST.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH OF BRUNSWICK
GEORGIA TO 10 MILES SOUTHWEST OF SARASOTA FLORIDA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).
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 45...
DISCUSSION...BAND OF STG-SVR TSTMS...INCLUDING A FEW SUPERCELLS...IS
EVIDENT AT WW ISSUANCE TIME OVER PORTIONS FL PANHANDLE AND NERN
GULF...AND SHOULD ENCOUNTER INCREASINGLY FAVORABLE LOW-LEVEL THETAE
AS IT MOVES INLAND OVER NRN/WRN FL. ADDITIONAL CONVECTION MAY
DEVELOP OVER NRN FL AND SERN GA...INCLUDING WARM-SECTOR ACTIVITY
THAT WOULD POSE TORNADO RISK WHILE INTERACTING WITH
DIFFUSE/NWD-MOVING WARM FRONT OVER REGION. VWP DATA AND FCST
SOUNDINGS SHOW FAVORABLE LOW-LEVEL HODOGRAPHS WITH 300-500 J/KG 0-1
KM SRH POSSIBLE...BOTH OVER WARM SECTOR AND IN SLICE OF WARM-FRONTAL
ZONE CONTAINING SFC-BASED LIFTED PARCELS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24035.
...EDWARDSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 8:57 PM EST | Mesoscale Discussion | SPC | Escambia, Santa Rosa | 63 min |
| Feb 25, 10:31 PM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more | 59 min |
| Feb 26, 12:59 AM EST | Tornado Watch | SPC | Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 12 more | 8 hr |
| Feb 26, 3:51 AM EST | Mesoscale Discussion | SPC | Calhoun, Dixie, Gadsden, Gulf, Hamilton, Jackson and 8 more | 114 min |
| Feb 26, 6:19 AM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 16 more | 116 min |
| Feb 26, 11:38 AM EST | Mesoscale Discussion | SPC | Charlotte, Citrus, Clay, DeSoto, Duval, Flagler and 19 more | 67 min |
| Feb 26, 8:44 AM EST | Mesoscale Discussion | SPC | Bulloch, Effingham, Screven | 3 hr |
Nearby
Tornado Watches in Florida, 2013Tornado Watches in Georgia, 2013Every tornado watch in 2013
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.