Storm Prediction Center Day 1 Fire Weather Outlook
Created: Sun Aug 19 16:34:03 UTC 2018 ( | )
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ZCZC SPCFWDDY1 ALL FNUS21 KWNS 191633 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1133 AM CDT Sun Aug 19 2018 Valid 191700Z - 201200Z The ongoing forecast is on track and no major changes are needed. Isolated thunderstorms containing dry lightning strikes remain possible across portions Oregon, western Idaho, and southern Washington. Additionally, locally elevated fire weather conditions will occur at times across far western Nevada and far northeastern California, where westerly surface flow will approach 15 mph at times amidst 10-15% RH values and dry fuels. See the previous discussion below for more details. ..Cook.. 08/19/2018 .PREV DISCUSSION... /ISSUED 0132 AM CDT Sun Aug 19 2018/ ...Synopsis... ...Pacific Northwest... A shortwave trough will track east across WA/OR today and tonight. As the trough moves inland, cooling midlevel temperatures will result in steepening lapse rates atop modest boundary layer moisture. By peak heating, 500-1000 J/kg MLCAPE is forecast and isolated thunderstorms are expected from late afternoon and into the nighttime hours. PW values will range from around 0.6-0.8 inches with very dry sub-cloud layers indicated in forecast soundings. As a result, wetting rains are not expected and isolated dry thunderstorms will pose a threat for new ignitions. ...Please see www.spc.noaa.gov/fire for graphic product...
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