Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 6
< Previous MD         Next MD >
MD 6 graphic

   Mesoscale Discussion 0006
   NWS Storm Prediction Center Norman OK
   0535 AM CST Mon Jan 02 2017

   Areas affected...Parts of central/east TX and western/central LA

   Concerning...Severe Thunderstorm Watch 1...

   Valid 021135Z - 021300Z

   The severe weather threat for Severe Thunderstorm Watch 1 continues.

   SUMMARY...Mainly a damaging wind risk continues across remaining
   valid portions of Severe Thunderstorm Watch 1. A downstream watch
   into the remainder of east TX and western/central LA will be
   required by 13-14Z.

   DISCUSSION...Measured severe wind gusts of 64 and 66 mph have
   recently been observed per surface observations across parts of
   central TX with a bowing line of thunderstorms slightly east of the
   I-35 corridor from Dallas to Austin, TX as of 1130Z. Given the fast
   eastward progression of this bowing line/cold front (40-50 kt) and a
   favorable airmass downstream, strong to damaging winds will continue
   to be the main threat in the short-term across remaining valid
   portions of Severe Thunderstorm Watch 1.

   Pre-frontal convection has developed northwest of Houston TX, and
   the environment across east TX is favorable for supercells ahead of
   the eastward-advancing cold front. Strong instability with MLCAPE
   around 2000-2500 J/kg across southeast TX, effective bulk shear of
   40-50 kt, and elongated low-level hodographs per recent KHGX VWPs
   all suggest there will be some risk for an isolated tornado with any
   discrete convection ahead of the front.

   A local extension of the current Severe Thunderstorm Watch in area
   will likely be needed along and north of the Houston metro area for
   the strengthening pre-frontal convection. A downstream watch into
   the remainder of east TX and western/central LA will be required by
   13-14Z.

   ..Gleason.. 01/02/2017


   ATTN...WFO...LCH...SHV...HGX...FWD...EWX...

   LAT...LON   29959733 30939715 31729691 32669706 33309709 33239532
               32799334 32489212 31619207 30589217 29519263 29619300
               29519417 29129486 29249619 29959733 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: January 02, 2017
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities