Provo, UT...Orem, UT...Draper, UT...Cottonwood Heights, UT...Lehi, UT...
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 181507
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1007 AM CDT Tue Sep 18 2018
Valid 181700Z - 191200Z
...CRITICAL FIRE WEATHER AREA FOR EXTREME EAST-CENTRAL
NEVADA...SOUTHWEST INTO NORTHEAST UTAH...AND SOUTHWEST INTO
Minor adjustments to the elevated and critical area have been made
this morning. These changes are supported by latest hi-res HRRR and
HREF guidance, in addition to surface observation trends this
morning. Overall forecast reasoning remains unchanged. See previous
outlook below for more details.
.PREV DISCUSSION... /ISSUED 0116 AM CDT Tue Sep 18 2018/
A mid-level shortwave will impact potions of the Great Basin and
central Rockies today. The strong mid-level flow associated with
this feature will boost surface wind speeds as boundary layers
deepen in the afternoon. At the surface, troughing within the Great
Basin into Central Wyoming as well as high pressure behind a cold
front will build into the northern Rockies will further enhance the
...East-central Nevada...west-central into northeastern
Critical fire weather conditions are expected during the afternoon
as surface winds reach 20-25 mph. Mid-level flow will drive much of
the critical conditions for parts of Nevada and Utah. In Wyoming,
high-resolution guidance appears to be picking up on the
strengthening surface pressure gradient with the approach of a cold
front from the north. Afternoon RH values will range from 5-15%.
Areas surrounding the critical area will see similar RH values but
surface winds should fall short of critical criteria, ranging only
from 15-20 mph.
...Please see www.spc.noaa.gov/fire for graphic product...
CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)