Tornado Watch 17

Issued

Mar 20, 2018, 10:24 AM EDT (14:24 UTC)

Expired

Mar 20, 2018, 7:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Jacksonville radar (KJAX), 113 km from the middle of the area, began a volume at 14:24 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

70%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 157Mar 20, 9:50 AM EDT
• Mesoscale Discussion 158Mar 20, 12:05 PM EDT
• Mesoscale Discussion 160Mar 20, 1:00 PM EDT
• Mesoscale Discussion 161Mar 20, 2:48 PM EDT
• Mesoscale Discussion 162Mar 20, 4:16 PM EDT

548 
WWUS20 KWNS 201420
SEL7  
SPC WW 201420
FLZ000-GAZ000-CWZ000-202300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 17
NWS Storm Prediction Center Norman OK
1020 AM EDT Tue Mar 20 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern and central Florida
  Far southeast Georgia
  Coastal Waters

* Effective this Tuesday morning and evening from 1020 AM until
  700 PM EDT.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered large hail likely with isolated very large hail events
    to 2.5 inches in diameter possible
  Scattered damaging wind gusts to 70 mph likely

SUMMARY...Scattered severe storms are expected through this
afternoon, capable of producing tornadoes, large hail, and damaging
winds.

The tornado watch area is approximately along and 75 statute miles
either side of a line from 60 miles west northwest of Jacksonville
FL to 35 miles west southwest of Avon Park FL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).

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.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 26035.

...Grams

Tornado Watches in Florida, 2018Tornado Watches in Georgia, 2018Every tornado watch in 2018

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.