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

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

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 100533
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1133 PM CST Fri Dec 09 2016
Valid 101200Z - 111200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
A few thunderstorms will be possible near the Washington and
northern Oregon coast through Saturday night, but severe
thunderstorms are not expected.
...Synopsis and Discussion...
Generally zonal mid-level flow will persist across the contiguous
U.S. this period, with cool/stable low-level conditions precluding
thunderstorm development across much of the country. However,
embedded within westerly flow across the Pacific Northwest, a
weakening shortwave impulse will approach the coast during the day.
Following the passage of the attendant surface trough, steepening
low-level lapse rates and sufficient surface moisture should support
a few updrafts deep enough to produce lightning near the coast.
..Picca/Cohen.. 12/10/2016
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z