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 1363
< Previous MD         Next MD >
MD 1363 graphic

   MESOSCALE DISCUSSION 1363
   NWS STORM PREDICTION CENTER NORMAN OK
   0746 PM CDT SUN JUL 13 2014

   AREAS AFFECTED...PARTS OF THE MID-ATLANTIC...NORTHEAST

   CONCERNING...SEVERE THUNDERSTORM WATCH 414...415...416...

   VALID 140046Z - 140215Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   414...415...416...CONTINUES.

   SUMMARY...RISK FOR DAMAGING WINDS APPEARS TO HAVE PEAKED AND WILL
   LIKELY DIMINISH THROUGH THE NEXT COUPLE OF HOURS /MORE RAPIDLY AFTER
   02Z/. ADDITIONAL WW/S ARE NOT ANTICIPATED.

   DISCUSSION...EARLIER SUPERCELL STRUCTURES AND REFLECTIVITY GRADIENTS
   HAVE RELAXED ACROSS THE NRN PORTION OF MCS AND CLUSTERS OVER THE
   LOWER HUDSON VALLEY INTO NE PA. 00Z OKX RAOB SAMPLED MEAGER BUOYANCY
   AND THE OVERALL RISK SHOULD NOT APPRECIABLY INTENSIFY.

   FARTHER S...MERGING OUTFLOW/AMALGAMATION OF CELLS ALONG THE LEADING
   EDGE OF THE COLD POOL AIDED IN A 50 KT MEASURED GUST AT MRB ABOUT AN
   HOUR AGO. DOWNSTREAM AIR MASS FROM DC TO N NJ HAS SLOWLY COOLED IN
   THE 80S...BUT RESIDUAL STEEP LOW-LEVEL LAPSE RATES /AS SAMPLED BY
   00Z IAD RAOB/ WILL SUPPORT A DAMAGING WIND RISK CENTERED NEAR THE
   PA/MD BORDER. STILL WITH WEAKER DEEP-LAYER WINDS RELATIVE TO FARTHER
   N...AND OVERALL DIMINISHING FLOW PROGGED THROUGH THE EVENING...GUST
   INTENSITY WILL LIKELY SUBSIDE AS WELL.

   ..GRAMS.. 07/14/2014


   ATTN...WFO...BOX...OKX...ALY...PHI...BGM...CTP...LWX...

   LAT...LON   40317690 40627615 41557527 41677488 41817348 41837300
               41847255 41707228 41517238 41127383 39907479 38997567
               38667631 38547691 38617738 38767766 39037776 39257765
               40317690 

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: July 14, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities