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 689
< Previous MD         Next MD >
MD 689 graphic

   Mesoscale Discussion 0689
   NWS Storm Prediction Center Norman OK
   0811 PM CDT Sat Jun 09 2018

   Areas affected...portions of central MT

   Concerning...Severe Thunderstorm Watch 166...

   Valid 100111Z - 100245Z

   The severe weather threat for Severe Thunderstorm Watch 166

   SUMMARY...Storms have intensified along the eastern periphery of WW
   166 this evening. A severe threat may spread into adjacent Fergus
   and Blaine Counties and the watch has been extended into these

   DISCUSSION...Storms have increased in intensity over the last hour
   just to the west of LWT to HVR. Moist upslope flow into the higher
   terrain of Judith Basin and Chouteau Counties is evident per recent
   increasing dewpoints at HVR and LWT into the low to mid 50s. As a
   result, storms moving off of higher terrain will be encountering a
   more moist and unstable airmass, and additional strengthening is
   possible. As such, a local extension in watch area has been
   collaborated with WFO Great Falls. Large hail and strong wind gusts
   will be the main threat with these storms as they quickly track

   ..Leitman.. 06/10/2018

   ...Please see for graphic product...


   LAT...LON   48981108 49010825 46830866 46760898 46690954 46660990
               46791033 47031064 47741091 48981108 

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: June 10, 2018
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities