Storm Prediction Center Fire Weather Outlook - thorntonweather.com

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Thornton, Colorado, USA

Updated: Sat, 23-Sep-2023 6:10pm MDT

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Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1149 AM CDT Sat Sep 23 2023 Valid 231700Z - 241200Z ...NO CRITICAL AREAS... No changes are needed to the current D1 Fire Weather Outlook. See previous discussion below. ..Thornton.. 09/23/2023 .PREV DISCUSSION... /ISSUED 0125 AM CDT Sat Sep 23 2023/ ...Synopsis... Fire weather concerns will remain limited for today across much of the country, though localized concerns may emerge along the High Plains. Early-morning surface observations depict a surface low gradually deepening across the central High Plains ahead of an approaching upper wave (located over central WY as of 06 UTC). This surface low is expected to deepen further as it shifts east/northeast into the Plains through the day. A trailing cold front/surface trough will sweep east in tandem with this feature, establishing a westerly downslope flow regime off the central and southern Rockies. Dry conditions are noted upstream across the Four Corners (dewpoints and RH in the teens), and this air mass should spread east into the High Plains through the day. Afternoon RH minimums in the teens are expected across the southern High Plains, but further north across CO/WY/NE, an influx of cooler post-frontal temperatures will modulate RH reductions. Additionally, mid-level winds are forecast to wane over the Rockies and High Plains through the day as the synoptic wave shifts east. This should limit the coverage of 15+ mph gradient winds (especially with southward extent), though stronger winds in the lee of terrain features appear likely. The poor spatial overlap of adequate RH and sufficient winds lends low confidence in the overall fire weather threat away from the immediate lee of terrain features. This is compounded further by low confidence in fuel status across much of the region. ...Please see www.spc.noaa.gov/fire for graphic product... Day 2 Fire Weather Outlook
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