ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 210756
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0156 AM CST Tue Feb 21 2017
Valid 211200Z - 221200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NORTHEAST CO...EXTREME
SOUTHEAST WY...AND EXTREME SOUTHERN PARTS OF THE NEB PANHANDLE...
An extensive midlevel wind-speed maximum is forecast to overlie
areas from coastal CA to the upper MS Valley, while mean troughing
is reinforced over the Pacific Northwest and adjacent east Pacific.
A surface trough will deepen over portions of the northern and
central High Plains. Two separate regions of fire-weather highlights
are in effect, as subsequently discussed, while recent precipitation
between and north of these areas may limit the fire-weather risk.
...Portions of southeast WY, 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 with higher gusts are forecast to combine with RH
around 12-20 percent in support of elevated to critical fire-weather
The latest short-range, high-resolution model guidance suggests that
overlap of critically strong winds (speeds of 20-25 mph) and low RH
(12-15 percent) will be most likely for the following areas: the
vicinity of the CO Front Range and surrounding foothills, eastward
across portions of the northeastern CO High Plains, extreme
southeast WY, and extreme southern parts of the NE Panhandle. Given
relatively limited precipitation across these areas, sufficiently
dry fuels exist for Critical designation.
For locations surrounding the Critical area, elevated to
borderline-critical fire-weather conditions will be possible,
warranting Elevated designation. However, the strongest winds are
forecast to remain displaced to the north of the lowest RH, limiting
the critical fire-weather potential.
...Portions of southwest KS northeastward to south-central NE...
A modestly enhanced low-level pressure gradient east of the lee
trough is forecast to support southwesterly to west-northwesterly
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, critically strong winds are unlikely.
...Please see www.spc.noaa.gov/fire for graphic product...
CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)