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| Probabilistic Tornado Graphic | |||||||||
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| 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. |
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| Probabilistic Damaging Wind Graphic | |||||||||
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| 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. |
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| Probabilistic Large Hail Graphic | |||||||||
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| 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. |
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SPC AC 090027 DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0627 PM CST SUN DEC 08 2013 VALID 090100Z - 091200Z ...NO SVR TSTM AREAS FORECAST... ...SYNOPSIS... A BROAD BELT OF SWLY FLOW ALOFT WILL PERSIST FROM THE SRN PLAINS INTO THE NERN STATES WITH A POSITIVE-TILT UPPER TROUGH AXIS EXTENDING FROM THE NRN PLAINS INTO THE FOUR CORNERS STATES AND MOVING EWD OVERNIGHT. AT THE SURFACE...HIGH PRESSURE WILL AFFECT MUCH OF THE WRN AND CNTRL STATES WITH COLD/DRY WEATHER...BUT SOME RAIN AND WEAK THUNDERSTORMS WILL PERSIST NEAR A COLD FRONT EXTENDING FROM LA INTO GA. ...ERN LA NEWD INTO NRN GA... A RELATIVELY MOIST AIR MASS EXISTS WITH PRECIPITABLE WATER OVER 1.60 INCHES ALONG AND N OF THE COLD FRONT...AND WITH MID 60S F SURFACE DEWPOINTS INTO SRN AL. WITH SWLY FLOW ALOFT...SOME OF THIS AIR IS BEING LIFTED OVER THE FRONT AND SUFFICIENT ELEVATED INSTABILITY EXISTS FOR WEAK THUNDERSTORMS. THIS PATTERN IS EXPECTED TO CONTINUE OVERNIGHT WITH ISOLATED THUNDERSTORMS POSSIBLE. DUE TO WEAK INSTABILITY...SEVERE WEATHER IS NOT EXPECTED. ..JEWELL.. 12/09/2013 CLICK TO GET WUUS01 PTSDY1 PRODUCT NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z |
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