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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 271943 DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0143 PM CST FRI DEC 27 2013 VALID 272000Z - 281200Z ...NO TSTM AREAS FORECAST... NO CHANGES NEEDED TO THE PREVIOUS OUTLOOK. ..BUNTING.. 12/27/2013 .PREV DISCUSSION... /ISSUED 1024 AM CST FRI DEC 27 2013/ ...SYNOPSIS... AS AN UPPER TROUGH OVER THE NERN QUARTER OF THE U.S. PROGRESSES TOWARD/OFF THE ATLANTIC COAST...A BRIEF SWITCH TO A MORE ZONAL FLOW PATTERN WILL OCCUR ACROSS THE NRN TIER OF THE COUNTRY AHEAD OF THE NEXT TROUGH PROGRESSING INTO THE PAC NW COASTAL AREAS ATTM. WHILE THIS TROUGH WILL CONTINUE ADVANCING INLAND WITH TIME...A SRN STREAM TROUGH OVER THE TX/NRN MEXICO AREA WILL REMAIN BASICALLY IN PLACE THROUGH THE END OF THE PERIOD. AT THE SURFACE...A COLD FRONT WILL LINGER NEAR THE U.S./CANADIAN BORDER THROUGH MOST OF THE PERIOD...BEFORE BEGINNING A SWD ADVANCE LATE. MEANWHILE...A DIFFUSE/REMNANT BAROCLINIC ZONE WILL REMAIN INVOF CENTRAL/S FL THROUGH THE PERIOD. THE MAIN CHANGE THIS FORECAST WILL BE TO REMOVE THE THUNDER AREA OVER S FL. WHILE SHOWERS AND PERHAPS A COUPLE OF LIGHTNING STRIKES ARE EXPECTED HERE /AND ACROSS CENTRAL AND S TX/...OVERALL LIGHTNING COVERAGE SHOULD REMAIN BELOW 10% THRESHOLD JUSTIFYING AN AREAL OUTLOOK. CLICK TO GET WUUS01 PTSDY1 PRODUCT NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z |
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