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 1551
< Previous MD         Next MD >
MD 1551 graphic

   MESOSCALE DISCUSSION 1551
   NWS STORM PREDICTION CENTER NORMAN OK
   0337 PM CDT TUE AUG 12 2014

   AREAS AFFECTED...NERN NV / SWRN AND S-CNTRL ID / FAR NWRN UT

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 122037Z - 122130Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...ISOLATED TO WIDELY SCATTERED STORMS WILL LIKELY DEVELOP
   AND MOVE NEWD ACROSS NERN NV INTO ADJACENT PARTS OF UT AND ID THIS
   AFTERNOON AND EARLY EVENING.  STRONG TO SEVERE WIND GUSTS ARE
   POSSIBLE WITH THE STRONGER DOWNDRAFTS.

   DISCUSSION...SATELLITE AND RADAR MOSAIC DATA SHOW STORMS DEVELOPING
   OVER NERN NV AND OTHER ISOLATED ACTIVITY OVER SWRN ID AS OF 2035Z. 
   TEMPS HAVE WARMED INTO THE 80S IN NERN NV AND LOWER 90S IN THE SNAKE
   VALLEY.  12Z AREA RAOBS AND EARLY AFTERNOON REGIONAL GPS PW SENSORS
   SHOW APPRECIABLE PW /AROUND 1 INCH/.  AS A SHORTWAVE TROUGH OVER
   NERN CA AND NWRN NV MOVES NNEWD...THE TRAILING SERN LOBE OF ASCENT
   ASSOCIATED WITH THIS FEATURE WILL CONTINUE TO OVERSPREAD NERN NV AND
   MOVE NEWD OVER THE NEXT SEVERAL HOURS.  AS A RESULT...STORM COVERAGE
   WILL PROBABLY INCREASE WITH A LIKEWISE STRENGTHENING IN STORM
   INTENSITY.  THE PRESENCE OF 30-40 KT EFFECTIVE SHEAR AND STEEP
   LOW-LEVEL LAPSE RATES WILL SERVE TO BOTH PROMOTE SOME UPDRAFT
   LONGEVITY AND DOWNDRAFTS POTENTIALLY CAPABLE OF A 40-55 KT WIND GUST
   THREAT.

   ..SMITH/THOMPSON.. 08/12/2014


   ATTN...WFO...SLC...PIH...BOI...LKN...

   LAT...LON   39691654 41031704 43541592 43751448 43401343 42421295
               39721372 39471535 39691654 

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: August 12, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities