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NorthGeorgiaWX

Saturday, January 11

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High Wind Warning just issued for my area. That's something you don't see every day...   😲

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Watches coming.

Mesoscale Discussion 0035
NWS Storm Prediction Center Norman OK
0928 AM CST Sat Jan 11 2020

Areas affected...Northern AL...Middle/eastern TN...Northwest GA

Concerning...Tornado Watch 12...

Valid 111528Z - 111700Z

The severe weather threat for Tornado Watch 12 continues.

SUMMARY...Threat for damaging wind and perhaps a tornado or two
continues across WW 12. Local watch extension will likely be needed
across middle TN, and downstream watch issuance is likely by 18Z
into northeast AL/northwest GA/eastern TN.

DISCUSSION...Extensive QLCS is ongoing across middle TN into
northern AL at 1530Z. Over the last hour, the eastward progression
of the QLCS has slowed across northern AL, while some northeastward
push is still noted across middle TN. Instability downstream of this
system is quite meager, but sufficient to allow maintenance or only
a slow weakening of the QLCS in the short term. Very strong
low-level flow/shear (70-80 kt of flow at around 1 km AGL) will
continue to support the potential for damaging wind and perhaps a
brief tornado as the northern portion of the QLCS spreads
northeastward across middle TN. A local extension of WW 12 may be
necessary across TN to cover this threat in the short term, with
downstream watch issuance likely into eastern TN by 18Z.

Further south across northern AL, the recent lack of eastward
progression of the QLCS may allow for somewhat greater
destabilization downstream before the system begins to surge
eastward again by late morning/early afternoon. This could result in
a somewhat greater wind/tornado risk later today compared to areas
further north. Downstream watch issuance into northeast AL/northwest
GA will become increasingly likely by 18Z.

Snap346063411.thumb.png.cfeeafd92108a0ab346827d404f0bd57.png

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NWS Atlanta

We have upgraded the Wind Advisory for the higher elevations of north Georgia to a High Wind Warning. We have already had reports from Dade County of trees down due to the higher winds. The mesonet is also showing some obs with an occasional gust to 45-50 mph.

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So far in Marietta, GA, it is gray and muggy.  Every now and again, a strong breeze blows through.  What weird, weird weather.

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1 minute ago, NorthGeorgiaWX said:

The SPC risk area is evolving. Here's the latest image.

1751608483_GA_swody1(3).png.9abd627def8a6ee7cb3f6dc97742fc33.png

 

Alright, now that’s close enough to Paulding County. I won’t accept any closer. Nope. Go away. Lol 

I will be glad when it’s over! I wanna get excited for the big switch that’s coming!

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Updated Day 1 Outlook

Quote

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1028 AM CST Sat Jan 11 2020

   Valid 111630Z - 121200Z

   ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  THE CENTRAL GULF COAST STATES......

   ...SUMMARY...
   Scattered to potentially widespread damaging winds are expected
   across parts of the Central Gulf Coast states and Tennessee Valley.
   The greatest threat for tornadoes will be across portions of
   Alabama.

   ...IN/OH/KY...
   A fast-moving squall line is tracking eastward across the OH/TN
   Valleys and central Gulf Coast states today, producing numerous
   reports of wind damage over the past few hours.  The northern end of
   the line over IN/OH/KY is moving into a progressively more
   dry/stable air mass, with general weakening noted in
   satellite/radar/lightning data.  Despite the weakening, locally
   damaging wind gusts will remain possible for the next few hours
   along the leading edge of the line of convection.

   ...TN/MS/AL/GA...
   The intense squall line extends southward across middle TN into
   northwest AL and eastern MS.  The air mass ahead of the line is
   modestly unstable with dewpoints in the low/mid 60s.  Little daytime
   heating is expected, but afternoon MLCAPE values as high as 1000
   J/kg may be realized over central AL later today.  Given the
   extremely strong wind fields, this parameter space will remain
   conducive for damaging winds and QLCS mesovortices along the squall
   line.
 The warm sector continues to show a little capping per recent
   soundings in northern AL.  If the capping erodes, the potential for
   a few discrete supercells ahead of the line would increase, along
   with a potential for a strong tornado or two.

   ...Carolinas into PA/NJ...
   The convective line will likely maintain some character through much
   of the night, with occasional gusty/damaging wind reports all the
   way to the Atlantic coast.

 

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Doing a little storm chasing today, headed to Gadsden, AL. Stay safe everyone.

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Sigh....I wish hubby was home.  I hate having him camping in this weather.  I’m sure the camp is paying close attention and will require them to come indoors if necessary, especially after the the death at Bert Adams in the summer.  It just makes me super nervous.

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"Mesoscale discussion above focuses on the potential issuance of a new Tornado WATCH that would likely cover portions of northwest and west-central GA. Will likely not include downtown Atlanta but possibly west & north suburbs. We will be coordinating this with SPC shortly."

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ww0015_radar.gif.5913c64e2b092347d0ecce2245cec4fd.gif

URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 15
   NWS Storm Prediction Center Norman OK
   140 PM EST Sat Jan 11 2020

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Eastern Alabama
     Western and Northern Georgia
     Extreme Western North Carolina
     Southeast Tennessee

   * Effective this Saturday afternoon and evening from 140 PM until
     900 PM EST.

   * Primary threats include...
     A few tornadoes likely with a couple intense tornadoes possible
     Widespread damaging winds likely with isolated significant gusts
       to 75 mph possible

   SUMMARY...A line of intense thunderstorms over central Alabama will
   track eastward across the watch area this afternoon and early
   evening.  Damaging winds will be possible along the leading edge of
   the line, along with the potential for embedded tornadoes.

   The tornado watch area is approximately along and 65 statute miles
   east and west of a line from 30 miles east southeast of Troy AL to
   55 miles north northeast of Chattanooga TN. For a complete depiction
   of the watch see the associated watch outline update (WOUS64 KWNS
   WOU5).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Tornado Watch means conditions are favorable for
   tornadoes and severe thunderstorms in and close to the watch
   area. Persons in these areas should be on the lookout for
   threatening weather conditions and listen for later statements
   and possible warnings.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 12...WW 13...WW 14...

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 0.5 inches. Extreme turbulence and surface wind
   gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
   storm motion vector 24045.
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Just now, LEmbs said:

Hey, Steve.  Is the timing for ATL metro still about the same?

Yes, roughly from 5-6pm through 11 pm depending on location.

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Ugh - that's going to toss trees all over down here in southeast ATL metro.  Any chance it'll have less juice by the time it gets here?

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16 minutes ago, Mudrun said:

Ugh - that's going to toss trees all over down here in southeast ATL metro.  Any chance it'll have less juice by the time it gets here?

Possibly. Watching it closely

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