ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 191445
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0945 AM CDT Wed Sep 19 2018
Valid 191700Z - 201200Z
...CRITICAL FIRE WEATHER AREA FOR SOUTHWEST TO NORTHEAST
UT...NORTHWEST CO AND SOUTHWEST WY...
The ongoing forecast is on track and no changes are needed. See
discussion below for more details.
.PREV DISCUSSION... /ISSUED 1236 AM CDT Wed Sep 19 2018/
A mid-level trough axis will push through the Great Basin today.
Another well-timed mid-level jet will round the base of the trough
and impact portions of Utah and Wyoming during the afternoon. A
deepening surface trough across Utah and southwest Wyoming will also
enhance surface winds.
...Portions of central/northeastern Utah...southwest/south-central
Critical fire weather conditions will occur during the afternoon as
at least modest boundary-layer mixing will bring stronger flow to
the surface. Further enhancement of surface flow will occur as
surface trough deepens in the Great Basin in response to the
upper-level trough. Surface winds will reach 20-25 mph with RH
values falling to 5-15%.
Areas surrounding the critical region as well as central Nevada
northward to the Snake River Valley can expect elevated fire weather
concerns. Surface winds in these areas will reach 15-20 mph with
5-20% RH afternoon RH values.
...Please see www.spc.noaa.gov/fire for graphic product...
CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)