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2017 General Severe Weather thread


downeastnc

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14 minutes ago, Cold Rain said:

Why?

Right lol....if anything the SPC update was a bit more bullish...especially RDU to the east were filtered sun and temps in the upper 70's to low 80's is occurring.....

Regional 12z soundings and radar/satellite imagery show a widespread
   band of clouds/rainfall preceding the cold front, where surface
   heating will be limited and lapse rates will remain rather poor.
   Still, the rich low-level moisture (boundary-layer dewpoints of
   68-72 F) will contribute to weak surface-based buoyancy into the
   western Carolinas (SBCAPE 250-500 J/kg), and somewhat greater
   buoyancy into SC (1000-1500 J/kg).  At the same time, low-level
   shear will become quite strong (0-1 km SRH of 250-500 m2/s2), which
   will support strengthening of convection in a band with some breaks
   along the front this afternoon from eastern GA into the western and
   central Carolinas.  Embedded supercells and LEWP structures will be
   capable of producing a few tornadoes and damaging gusts, likely
   beginning by 18-20z in the vicinity of the Savannah River, and then
   spreading eastward-northeastward through this evening.

 

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URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 508
   NWS Storm Prediction Center Norman OK
   200 PM EDT Mon Oct 23 2017

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Extreme east central Georgia
     Western North Carolina
     Much of central and western South Carolina
     Coastal Waters

   * Effective this Monday afternoon and evening from 200 PM until
     900 PM EDT.

   * Primary threats include...
     A few tornadoes possible
     Scattered damaging wind gusts to 70 mph possible

   SUMMARY...Thunderstorms will intensify gradually this afternoon
   along and ahead of a cold front moving from Georgia into western
   South Carolina and North Carolina.  The storm environment will be
   favorable for both supercells in the broken band of storms, and
   ahead of the band, as well as mesovortices embedded in the line. 
   These circulations will be capable of producing a few tornadoes and
   damaging gusts through this evening.

   The tornado watch area is approximately along and 60 statute miles
   east and west of a line from 50 miles northwest of Greensboro NC to
   50 miles south southwest of Orangeburg SC. For a complete depiction
   of the watch see the associated watch outline update (WOUS64 KWNS
   WOU8).

   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.
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NWS says TORNADO on the ground around spartanburg

This tornado will be near...
  Cedar Springs and Croft State Park around 310 PM EDT.
  Spartanburg, USC Upstate and Boiling Springs SC around 320 PM EDT.
  Mayo and Cowpens around 330 PM EDT.

Other locations impacted by this dangerous storm include Pauline and
Thicketty.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

LAT...LON 3515 8184 3495 8162 3491 8168 3491 8171
      3487 8175 3480 8196 3490 8211
TIME...MOT...LOC 1908Z 216DEG 37KT 3492 8199

TORNADO...OBSERVED
HAIL...<.75IN
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Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
319 PM EDT MON OCT 23 2017

Spartanburg SC-Cherokee SC-
319 PM EDT MON OCT 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR
NORTHEASTERN SPARTANBURG AND WEST CENTRAL CHEROKEE COUNTIES...

At 318 PM EDT, a confirmed tornado was located near Spartanburg, or
over USC Upstate, moving northeast at 35 mph.

HAZARD...Damaging tornado.
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Two rotations now, one just west of Gaffeny looks bad, second one is near Chesnee.....both could use a warning....

edit

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
332 PM EDT MON OCT 23 2017

The National Weather Service in Greenville-Spartanburg has issued a

* Tornado Warning for...
  Southern Cleveland County in the Piedmont of North Carolina...
  Northwestern Cherokee County in Upstate South Carolina...

* Until 400 PM EDT

* At 332 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 4 miles northwest of Gaffney, moving northeast at 25
  mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without
           shelter. Mobile homes will be damaged or destroyed.
           Damage to roofs, windows, and vehicles will occur.  Tree
           damage is likely.

* This dangerous storm will be near...
  Shelby, Boiling Springs NC, Mooresboro, Lattimore and Patterson
  Springs around 400 PM EDT.
 

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BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
410 PM EDT MON OCT 23 2017

The National Weather Service in Columbia has issued a

* Tornado Warning for...
  West central Calhoun County in central South Carolina...
  Central Orangeburg County in central South Carolina...

* Until 445 PM EDT

* At 410 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles northeast of Bamberg, moving north at 35 mph.
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* At 425 PM EDT, a confirmed tornado was located 9 miles southwest of
  Hickory, or near Icard, moving northeast at 70 mph.

  HAZARD...Damaging tornado.

  SOURCE...Public confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without
           shelter. Mobile homes will be damaged or destroyed.
           Damage to roofs, windows, and vehicles will occur.  Tree
           damage is likely.

* The tornado will be near...
  Hickory, Rhodhiss, Longview, Hickory Regional Airport and Granite
  Falls around 430 PM EDT.
  Bethlehem, Cedar Rock and Hudson around 440 PM EDT.
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