Winter Weather Update 12-6-13

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Winter Weather Update 12-6-13

  1. 1. Winter Weather Brief December 6th 2013 National Weather Service Houston/Galveston Weather Forecast Office
  2. 2. Overview • Temperatures across Southeast Texas are currently well above freezing with no icing reported; severe icing conditions have occurred north and west • Northwest portions of the area will see temperatures drop below freezing tonight but little or no additional precipitation is expected • More light rain is expected to move into the area Saturday afternoon and Saturday night with some potential for icing mainly well north and west of Houston
  3. 3. Heavier Precipitation Moving Out of Texas Weather Forecast Office Houston/Galveston, TX weather.gov/hgx @NWSHouston US National Weather Service HoustonGalveston GRAPHIC CREATED: 8 AM CST 12/6/13
  4. 4. Winter Storm Warnings (Pink) and Winter Weather Advisories (Purple) in Effect for Band Extending from North Texas to Southern New England for Snow and Ice; Our Forecast Area Not Included in These at the Moment Weather Forecast Office Houston/Galveston, TX weather.gov/hgx @NWSHouston US National Weather Service HoustonGalveston GRAPHIC CREATED: 8 AM CST 12/6/13
  5. 5. Freezing Line at Noon from Mt. Pleasant to Belton to Georgetown; Temperatures Across Southeast Texas mostly in the mid to upper 30s, lower 40s near coast
  6. 6. Tonight (Friday night) • • • Cold but mainly dry Small chance of spotty drizzle or freezing drizzle Could see few icy patches northwest counties if any moisture remains on bridges, overpasses but most areas dry Low Temperature Forecast for Tonight
  7. 7. Late Saturday, Saturday Night • • • • Some light rain moving back in Saturday afternoon Some of that light rain or drizzle could freeze over NW counties for a period of time when temperatures are below freezing Could see icy patches northwest counties mainly on bridges and overpasses should the light precipitation coincide with lowest temperatures Still some uncertainty on temperatures and precipitation chances Saturday night but main area of concern is far northern Low Temperature Forecast for Saturday Night counties
  8. 8. Late Saturday – Sunday morning Chances of freezing rain For Southeast Texas Latest round of models have less available moisture & slightly warmer temperatures - hence lower overall chances. Chance of light freezing precipitation and icing just 2030%, generally north of A College Station to Huntsville line. Otherwise Patchy light rain or drizzle elsewhere. Accumulations generally 0.01” 0.05”. Elevated roadways most at risk. Weather Forecast Office Houston/Galveston, TX weather.gov/hgx @NWSHouston US National Weather Service HoustonGalveston GRAPHIC CREATED: 8 AM CST 12/6/13
  9. 9. Summary • Cold conditions expected next several days. • Periods of light rain and drizzle through Tuesday. – First batch currently moving out of area as of Friday afternoon. – Should start back up Saturday afternoon thru Sunday morning. – Possibly another round late Monday. • Some precipitation could fall as light freezing rain or freezing drizzle should temperatures warrant. Best locations, but still borderline conditions, mainly north of College Station-Huntsville line through Sunday although other locations north and west should monitor. • Elevated structures, bridges, overpasses most at risk. • General model trend: slightly warmer with less moisture available. Translates to less significant impacts. • Limiting factors: moderate rainfall dragging warmer temperatures aloft down to the surface. Also precipitation mostly light and temperatures not falling far below freezing for even north sections. Weather Forecast Office Houston/Galveston, TX weather.gov/hgx @NWSHouston US National Weather Service HoustonGalveston GRAPHIC CREATED: 8 AM CST 12/6/13

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