Tornado Watch 24

Issued

Jan 22, 2017, 9:57 PM EST (02:57 UTC)

Expired

Jan 23, 2017, 5:58 AM EST

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Tampa radar (KTBW), 130 km from the middle of the area, began a volume at 02:57 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.

Two or more tornadoes

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 124Jan 22, 7:32 PM EST
• Mesoscale Discussion 125Jan 22, 8:21 PM EST
• Mesoscale Discussion 127Jan 23, 12:18 AM EST
• Mesoscale Discussion 128Jan 23, 2:22 AM EST
• Mesoscale Discussion 130Jan 23, 4:56 AM EST

793 
WWUS20 KWNS 230253
SEL4  
SPC WW 230253
FLZ000-CWZ000-231100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 24
NWS Storm Prediction Center Norman OK
955 PM EST Sun Jan 22 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Central and South Florida
  Coastal Waters

* Effective this Sunday night and Monday morning from 955 PM
  until 600 AM EST.

* Primary threats include...
  A couple tornadoes possible
  Isolated damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...A lingering threat for severe thunderstorms will shift
southeastward down the peninsula overnight, both from the main band
of thunderstorms initially across central Florida and relatively
discrete cells moving off the Gulf.  Instability, moisture and
vertical shear all will remain favorable for several more hours at
least.  The risk exists for damaging gusts, isolated large hail and
a couple of tornadoes.

The tornado watch area is approximately along and 70 statute miles
either side of a line from 35 miles north of Avon Park FL to 55
miles southwest of Miami FL. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU4).

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...This tornado watch replaces tornado
watch number 23. Watch number 23 will not be in effect after 955
PM EST. 

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 25030.

...Edwards

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.