Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0240 AM CDT Sat Mar 25 2017 Valid 251200Z - 261200Z ...CRITICAL FIRE WEATHER AREA FOR FAR SOUTHEAST ARIZONA AND SOUTHWEST NEW MEXICO... ...Synopsis... A closed low across the south-central United States will lift northeast toward the Great Lakes as an upstream low-amplitude, fast-moving trough will move from California toward the southern Plains. At the surface, cyclogenesis over the southern High Plains will act to strengthen the pressure gradient by late in the forecast period. ...Southwest United States... Mid-level, short-wave ridging will be in place across southwest United States during the day on Saturday, ahead of the aforementioned trough. This ridge will favor another day of warm, dry conditions across portions of the southwest. Given the dry airmass in place, these warm temperatures will allow for minimum afternoon relative humidity to fall into the 7-15% range. Mid-level flow will increase from west-to-east across the area during the afternoon as the trough approaches. Forecast soundings suggest a deeply mixed boundary layer will allow for downward transport of this stronger flow across the area. At present the area across southeast Arizona and southwest New Mexico appear the most likely to experience strong, gusty winds coinciding with the minimum in relative humidity. Here, critical fire-weather conditions appear likely for at least a few hours. Surrounding the critical fire-weather area, especially farther east, low-level winds appear to be weaker which should act to temper the overall fire-weather threat somewhat. The weaker winds appear likely due to the enhanced mid-level flow not reaching eastern New Mexico until after peak heating. ..Marsh.. 03/25/2017 ...Please see http://ift.tt/2i2um2s for graphic product...Read more
from SPC Forecast Products http://ift.tt/x5VKfK
No comments:
Post a Comment