Dec 10, 2016 1300 UTC Day 1 Convective Outlook
Updated: Sat Dec 10 12:42:14 UTC 2016 (20161210 1300Z Day 1 shapefile | 20161210 1300Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20161210 1300 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Tornado Graphic
20161210 1300 UTC Day 1 Tornado Probabilities Graphic
Probability of a tornado within 25 miles of a point.
Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Day 1 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
20161210 1300 UTC Day 1 Damaging Wind Probabilities Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point.
Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Day 1 Wind Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Large Hail Graphic
20161210 1300 UTC Day 1 Large Hail Probabilities Graphic
Probability of hail 1" or larger within 25 miles of a point.
Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Day 1 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   SPC AC 101242

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0642 AM CST Sat Dec 10 2016

   Valid 101300Z - 111200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Isolated thunderstorms will be possible along coastal Washington and
   northern Oregon beginning around midday.

   ...Pacific Northwest Coast...
   A surface trough attendant to a shortwave impulse off the BC/WA
   coast should reach coastal WA around midday, with an accompanying
   band of low-topped showers. Scant buoyancy and steep low/mid-level
   lapse rates could support a few updrafts becoming sufficiently deep
   to produce lightning along the coast. Scattered showers and sporadic
   lightning may persist through tonight amid moderate low-level
   onshore flow.

   ..Grams/Gleason.. 12/10/2016

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z