Tornado Watch 483

Issued

Sep 10, 2017, 12:02 PM EDT (16:02 UTC)

Expired

Sep 11, 2017, 12:41 AM EDT

In force

13 hr

Issued by

the Storm Prediction Center

The Jacksonville radar (KJAX), 140 km from the middle of the area, began a volume at 16:04 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.

• Mesoscale Discussion 1637Sep 10, 8:32 AM EDT
• Mesoscale Discussion 1638Sep 10, 3:01 PM EDT
• Mesoscale Discussion 1639Sep 10, 10:33 PM EDT

274 
WWUS20 KWNS 101559
SEL3  
SPC WW 101559
FLZ000-GAZ000-CWZ000-110400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 483
NWS Storm Prediction Center Norman OK
1200 PM EDT Sun Sep 10 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  much of Florida
  far southeast Georgia
  Coastal Waters

* Effective this Sunday from NOON until Midnight EDT.

* Primary threats include...
  A few tornadoes likely
  Isolated significant damaging wind gusts to 75 mph possible

SUMMARY...Bands of convection associated with Hurricane Irma will
continue progressing north across Florida in conjunction with Irma's
advance, while individual/embedded cells within the bands move
quickly westward.  Stronger cells will be capable of producing
tornadoes this afternoon and evening.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 15 miles west northwest of Jacksonville
FL to 40 miles southwest of Avon Park FL. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 482...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 600. Mean
storm motion vector 9050.

...Goss

Tornado Watches in Florida, 2017Every tornado watch in 2017

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.