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 181626
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1026 AM CST THU DEC 18 2014
VALID 181630Z - 191200Z
...NO SVR TSTM AREAS FORECAST...
...SUMMARY...
SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON THROUGH TONIGHT
FROM WEST AND SOUTH TEXAS INTO LOUISIANA. OTHER ISOLATED
THUNDERSTORMS ARE POSSIBLE ALONG THE WASHINGTON/OREGON COAST
TONIGHT.
...TX...
WATER VAPOR LOOPS SHOW A SHORTWAVE TROUGH OVER NORTHERN MEXICO.
THIS FEATURE WILL TRACK EASTWARD INTO TX THIS EVENING. MOISTENING
AND LARGE SCALE LIFT AHEAD OF THE TROUGH WILL PROMOTE THE
DEVELOPMENT OF SCATTERED SHOWERS AND A FEW THUNDERSTORMS...MAINLY
OVERNIGHT. WHILE AN ISOLATED STRONG STORM CAPABLE OF HAIL CANNOT BE
RULED OUT OVER PARTS OF SOUTH TX...IT APPEARS THAT AREAL COVERAGE OF
MORE INTENSE CONVECTION WILL BE QUITE LIMITED.
ELSEWHERE...A FEW THUNDERSTORMS MAY AFFECT THE WA/ORE COAST THIS
EVENING AND TONIGHT AS A COLD UPPER LOW APPROACHES THE REGION.
OTHER THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON OVER SOUTHEAST TX
AND SOUTHWEST LA.
..HART/GLEASON.. 12/18/2014
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z
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