Storm Prediction Center Day 2 Fire Weather Outlook
Created: Mon Feb 20 19:39:03 UTC 2017 ( | )
Click for Day 2 FireWX Areal Outline Product (KWNSPFWFD2)
ZCZC SPCFWDDY2 ALL FNUS22 KWNS 201934 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0134 PM CST Mon Feb 20 2017 Valid 211200Z - 221200Z Only minor changes have been made to the periphery of the elevated areas. ...Front range of Colorado... Latest guidance suggests that relative humidity will fall into the low teens, with the potential for single digits. Thus, despite modest surface winds, have pulled the elevated farther south. ...Southwest Kansas northeast to south-central Nebraska... Modest southwest winds will combine with a dry airmass to support elevated fire-weather conditions. This forecast expands the initial elevated area to the southwest and northeast to better align with the belt of relatively enhanced southwest surface flow. ..Marsh.. 02/20/2017 .PREV DISCUSSION... /ISSUED 0125 AM CST Mon Feb 20 2017/ ...Synopsis... A midlevel wind-speed maximum is forecast to extend from portions of coastal CA to the Central States, while a trough approaches northern and central parts of the West Coast from the eastern Pacific. Lee surface troughing will become established over portions of the northern and central High Plains. These features will be associated with two Elevated fire-weather areas subsequently discussed, while recent precipitation between and north of these areas may limit the fire-weather risk. ...Portions of southeast WY, north-central/northeast CO, western NE... Enhanced downslope winds extending off the central Rockies will support warming/drying over the adjacent High Plains. Westerly winds of 15-25 mph are forecast to combine with RH around 12-20 percent in support of elevated to borderline-critical fire-weather conditions. At this time, the strongest winds are forecast to remain displaced to the north of the lowest RH, minimizing the overlap of critically strong winds and RH and precluding Critical designation. ...Portions of western/central KS into south-central NE... A relatively enhanced low-level pressure gradient east of the lee trough is forecast to support southwesterly surface winds of 15-18 mph. With a warm air mass in place and a dearth of moisture return, vertical mixing will encourage RH values falling to around 12-20 percent. While elevated fire-weather conditions are expected, present indications are that critically strong winds will be unlikely. ...Please see www.spc.noaa.gov/fire for graphic product...
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