SPC Severe Thunderstorm Watch 440

WW 440 SEVERE TSTM FL CW 201915Z – 210200Z

WW 0440 Image

Severe Thunderstorm Watch Number 440
NWS Storm Prediction Center Norman OK
215 PM EST Thu Dec 20 2018

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  East-Central and South Florida including the Keys
  Coastal Waters

* Effective this Thursday afternoon and evening from 215 PM until
  900 PM EST.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...A line of strong to severe thunderstorms will progress
across the watch area this afternoon and evening, posing a risk of
damaging wind gusts.  An isolated tornado or two is also possible.

The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 35 miles southeast of Key
West FL to 45 miles east northeast of Melbourne FL. For a complete
depiction of the watch see the associated watch outline update


REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce



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


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