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

Mesoscale Discussion 1279
< Previous MD         Next MD >
MD 1279 graphic

   Mesoscale Discussion 1279
   NWS Storm Prediction Center Norman OK
   0800 PM CDT Sun Aug 12 2018

   Areas affected...Central/Western Arizona

   Concerning...Severe Thunderstorm Watch 336...

   Valid 130100Z - 130300Z

   The severe weather threat for Severe Thunderstorm Watch 336

   SUMMARY...A broken line of storms continues moving southwest in
   central Arizona in/near WW 336. Upscale organization is possible
   with severe wind/hail still likely.

   DISCUSSION...A broken line of storms stretching from north of
   Phoenix to northeast of Tucson is moving southwest with a history of
   severe warnings. Storms are in/moving into MLCAPE of 1000-1500 J/kg
   with marginal effective bulk shear (25-30 knots) indicating the
   potential for hail while steep low-level lapse rates, surface
   dewpoint depressions of 40+ F, and DCAPE of 1200+ J/kg along/ahead
   of the storms indicate the potential for severe wind. If a cold pool
   can establish behind these storms, the severe threat will
   increase/continue and mitigate the decreasing instability as
   insolation wanes. Strong/severe storms may also develop along/south
   of Watch #336 and will continued to be monitored.

   ..Nauslar/Grams.. 08/13/2018

   ...Please see for graphic product...


   LAT...LON   34351403 34531304 34651216 34731144 34511110 34291093
               33881086 33151088 32821062 32561064 32481146 32511221
               32501308 32481331 32351398 32941398 34351403 

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.
Page last modified: August 13, 2018
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities