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Weather Impacts Briefing NWS Nashville December 6, 2013

Weather Impacts Briefing NWS Nashville December 6, 2013. Impacts Summary. Three rounds of winter weather possible Round One northwest areas on Today Clarksville, Erin, Camden, Springfield, Dickson, Linden Round Two Saturday evening into Sun. Morning

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Weather Impacts Briefing NWS Nashville December 6, 2013

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  1. Weather Impacts BriefingNWS NashvilleDecember 6, 2013

  2. Impacts Summary • Three rounds of winter weather possible • Round One northwest areas on Today • Clarksville, Erin, Camden, Springfield, Dickson, Linden • Round Two Saturday evening into Sun. Morning • More widespread winter weather impacts expected than with round one • Northwest half of Middle TN affected including the Nashville Metro area • Round Three Sunday night thru Monday • Some light ice accumulation possible, but looking more like snow. • Locally heavy rain through the weekend • Except Saturday when mostly dry conditions expected

  3. Friday System Impacts • Rain will change to freezing rain beginning in far northwest Middle TN this morning • Mixing with sleet in the afternoon/evening • Ice accumulations of 1/4 to 1/3 inch expected • Greatest impacts around Clarksville, Camden, Erin and Dover • Some tree/power lines downed • Travel impacted • Precipitation ending in the evening

  4. Friday System Impacts…cont • Changeover to freezing rain expected from the northwest during the late aftn-evening • Ice accumulations of 0.1 to 0.2 inch possible around Springfield, Joelton, Dickson, Ashland City and Waverly • Light ice accumulations (0.1 inch or less) expected around Nashville, Waynesboro, Gallatin • Freezing rain ending in the evening • Little ice impact expected further southeast and on the Plateau

  5. Ice Storm Warning 9 am through midnight Winter Weather Advisory 4 pm through midnight

  6. Friday System Impacts…cont

  7. Ice Impact Index - Experimental

  8. Ice Impact Image Description

  9. Saturday Night-Sunday Impacts • Freezing rain/sleet redevelops during the evening/early morning hours • Greatest impacts northwest half of Middle TN • Significant ice impacts (1/4 inch or greater) possible northwest of a Portland to Joelton to Dickson to Camden line • Lesser ice impacts (1/4 inch or less) from the Nashville metro area down to Waynesboro/Lawrenceburg • Temperatures above freezing all areas by Sunday afternoon

  10. Saturday Night-Sunday

  11. Ice Impact Index - Experimental

  12. Heavy Rain/Flooding Impacts • Locally heavy rains possible today into Friday – especially southeastern 2/3 of Middle TN • 2 to 3 inches of rain expected • Localized flooding problems possible • Break in the rainfall on Saturday • More heavy rain potential on Sunday • Greatest potential again southeast half • 1 to locally 2 inches possible • Localized creek flooding and minor river flooding possible

  13. 5 Day Rainfall Forecast – thru next Wed am

  14. Sunday Night-Monday Impacts • Freezing drizzle/sleet redevelops during the late night hours for the western half of middle TN • Freezing drizzle lingers into Monday • Changeover to all snow Monday night • Early forecasts thoughts of 1 to 2 inches east of I-65

  15. Impacts Summary • Two rounds of winter weather expected • Round One northwest areas on Friday • Clarksville, Erin, Camden, Springfield, Dickson, Linden • Round Two Saturday evening into Sun. Morning • More widespread winter weather impacts expected than with round one • Northwest half of Middle TN affected including the Nashville Metro area • Locally heavy rain through the weekend • Except Saturday when mostly dry conditions expected

  16. Briefing at 430 am Friday • https://www1.gotomeeting.com/register/347553992 • Call: 1.866.231.8384 code: 6157548500

  17. QUESTIONS?*Please hit #6 to turn off mute*thomas.johnstone@noaa.gov615.754.8502 - 24/7

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