Storm Prediction Center Day 2 Fire Weather Outlook
Created: Fri Jun 22 06:55:03 UTC 2018 ( | )
Click for Day 2 FireWX Areal Outline Product (KWNSPFWFD2)
ZCZC SPCFWDDY2 ALL FNUS22 KWNS 220654 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0154 AM CDT Fri Jun 22 2018 Valid 231200Z - 241200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE GREAT BASIN INTO NORTHWEST ARIZONA... ...Synopsis... An upper-level trough will dig into the Great Basin on D2/Saturday. Strong mid-level flow will mix down to the surface as well-mixed boundary layers deepen over the course of the day. At the surface, a trough will develop in response the upper-level wave and enhance the surface winds further. A similar scenario will unfold in northern California, where strong northerly/northwesterly flow on the back side of the trough -- coupled with a surface trough -- will yield strong surface winds. Strong surface winds will overlap with critically low RH across the highlighted areas. ...Portions of the Great Basin into northwest Arizona... Strong mid-level flow will mix down to the surface in the afternoon with already enhanced surface due to a surface trough in the Great Basin. Surface winds will range from 20-25 mph with RH values dipping to 5-15%. Small southward extension of the critical area was made into Arizona on account of recent stronger wind guidance. Elsewhere, a surrounding area of elevated fire weather conditions will exist across much of New Mexico, western Colorado, and portions of Utah and Nevada. These locations will experience RH values 5-15%, however winds will not reach critical levels with their displacement from the stronger mid-level flow. ...Northern California... Elevated to locally critical fire weather conditions will exist in parts of the Sacramento Valley. Strong mid-level winds accompanied by a strong surface pressure gradient will yield winds in the 15-20 mph range. RH values will fall to 5-15% with the downsloping northerly/northwesterly flow. Critical winds will likely be too localized to warrant critical designation. ..Wendt.. 06/22/2018 ...Please see www.spc.noaa.gov/fire for graphic product...
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