1. Weekly Weather Briefing 12/06/2012 ( Decision Support Services) www.srh.noaa.gov/shv/briefing Matthew Duplantis Meteorologist National Weather Service Shreveport, Louisiana

2. Overview Short Term: Today into Friday… Short Term: Today into Friday… Warm and humid for the next few days… Warm and humid for the next few days… Patchy fog and drizzle in the mornings… Patchy fog and drizzle in the mornings… Weekend: Weekend: Saturday...a weak cold front will approach the area bringing a weak chance for rain…but, then will wash out around a Tyler to Shreveport to El Dorado line. Saturday...a weak cold front will approach the area bringing a weak chance for rain…but, then will wash out around a Tyler to Shreveport to El Dorado line. Sunday…showers and thunderstorms will begin to develop out ahead of the next system. Sunday…showers and thunderstorms will begin to develop out ahead of the next system. By the evening hours the upper level trough will begin to push a strong cold front through our area. Widespread severe weather is not anticipated with this event…but, isolated severe weather can not be ruled out. By the evening hours the upper level trough will begin to push a strong cold front through our area. Widespread severe weather is not anticipated with this event…but, isolated severe weather can not be ruled out. Locally heavy rainfall could be possible in some areas along and east of a line from Lufkin…to Bossier City…to El Dorado. Locally heavy rainfall could be possible in some areas along and east of a line from Lufkin…to Bossier City…to El Dorado. Extended: Extended: Very cold temperatures will be left in the wake of the cold front on Monday. The entire four state region will see below freezing temperatures Monday night…and high temperatures on Monday and Tuesday in the low to mid 50s. Very cold temperatures will be left in the wake of the cold front on Monday. The entire four state region will see below freezing temperatures Monday night…and high temperatures on Monday and Tuesday in the low to mid 50s. National Weather Service Shreveport, Louisiana

3. H L National Weather Map L

4. Today & Friday Surface low pressure to our west will allow for moist southerly flow to continue. H Moisture L

5. Saturday Weak cold front will approach the four state region early Saturday morning and washout by mid-day. H Moisture

6. Sunday Morning Surface low pressure system begins to form over Oklahoma out ahead of a strong cold front. H L

7. Sunday Evening Strong cold front begins to push through. Showers and thunderstorms will be ongoing and/or developing in this timeframe. H

8. Sunday Night/Monday Morning Heavy rain begins to form along cold front during the overnight hours. H

9. Monday Monday will be cool and blustery as the strong cold front vacates the area. H

10. Rainfall for Thursday - Monday 1.00 0.25 0.01 0.50

11. Tuesday Morning Freezing line for Tuesday morning… all of area should experience freezing temperatures! 30 28 27

12. Tuesday & Wednesday Surface high pressure builds into the area and reinforces cold air. H

13. Wednesday Morning Freezing line for Wednesday morning… cold air will still be in place. 32 30 34

14. Drought Monitor Drought is creeping back into areas of east Texas and northwest Louisiana.

15. Temperature Outlook 6 – 10 Days + 33 % + 40 %

16. Precipitation Outlook 6 – 10 Days +33% +40% +50% -33%

17. Temperature Outlook 8 – 14 Days + 40 %

18. Precipitation Outlook 8 – 14 Days +33% +40% -33% -40%

19. NEXT CONFERENCE CALL: www.srh.noaa.gov/shv/briefing Weekly Webinar – Thursday, December 13th @ 10 AM National Weather Service Shreveport, Louisiana