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 180531
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1131 PM CST Mon Dec 17 2018
Valid 181200Z - 191200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not forecast today or tonight across the
contiguous United States.
...Discussion...
A mid-level shortwave trough over the Southern Rockies will move
east into TX during the day. A gradual moistening of the profile
will contribute to weak instability over the middle and upper
coastal plain of TX. Showers and a few thunderstorms are possible
late in the day into the overnight beginning initially over central
TX moving into the coastal plain. Farther west, low-topped
convection may yield a couple of lightning flashes near the WA coast
in the left exit region of a Pacific upper jet.
..Smith/Nauslar.. 12/18/2018
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z
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