321
FNUS75 KGJT 251415
FWSGJT
SPOT FORECAST FOR MIDDLE MAMM FIRE...USFS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
815 AM MDT SUN AUG 25 2019
FORECAST IS BASED ON FORECAST START TIME OF 1000 MDT ON AUGUST 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE WILL REMAIN ANCHORED OVER THE
SOUTHWESTERN U.S. WHILE A STRONG TROUGH MOVES ACROSS THE NORTHERN
ROCKIES. THIS WILL RESULT IN INCREASING SURFACE WINDS UNDER STRONG
AND DRY WEST-NORTHWESTERLY FLOW ALOFT. TEMPERATURES WILL REMAIN
ABOVE NORMAL UNDER SUNNY SKIES, THOUGH THERE WILL STILL BE SOME
PASSING HIGH CLOUDS DURING THE AFTERNOON HOURS. NO PRECIPITATION
IS EXPECTED OVER THE FIRE FOR THE NEXT SEVERAL DAYS.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10%) WITH SOME PASSING HIGH CLOUDS.
MAX TEMPERATURE.....73-78 F.
MIN HUMIDITY........15-20%.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY WINDS 5 TO 8 MPH THROUGH MID
MORNING THEN BECOMING WEST 13 TO 23 MPH WITH GUSTS
UP TO 28 MPH.
SMOKE DISPERSAL.....POOR THROUGH MID MORNING, THEN GOOD. INCREASING TO
EXCELLENT BY EARLY AFTERNOON.
HAINES INDEX........4 OR LOW.
LAL.................1.
MIXING HEIGHT.......3800 FT AGL INCREASING TO 9500 FT AGL BY MID
AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 25 MPH.
TONIGHT
SKY/WEATHER.........CLEAR (0-10%).
MIN TEMPERATURE.....51-56 F.
MAX HUMIDITY........34-39%.
WIND (20 FT)........WEST WINDS 12 TO 22 MPH, THEN BECOMING
DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....VERY GOOD THEN DECREASING TO GOOD. DECREASING TO
POOR AFTER SUNSET.
HAINES INDEX........4 OR LOW.
LAL.................1.
MIXING HEIGHT.......8500 FT AGL DECREASING TO 1500 FT AGL AFTER
MIDNIGHT.
TRANSPORT WINDS.....WEST 14 TO 24 MPH.
MONDAY
SKY/WEATHER.........SUNNY (0-10%).
MAX TEMPERATURE.....71-76 F.
MIN HUMIDITY........11-16%.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY WINDS 5 TO 8 MPH THROUGH MID
MORNING, THEN BECOMING WEST 10 TO 20 MPH.
SMOKE DISPERSAL.....POOR THROUGH MID MORNING, THEN FAIR. INCREASING
TO GOOD BY NOON.
HAINES INDEX........3 OR VERY LOW, THEN BECOMING 4 OR LOW BY MID
AFTERNOON.
LAL.................1.
MIXING HEIGHT.......2000 FT AGL INCREASING TO 7800 FT AGL BY MID TO
LATE AFTERNOON.
TRANSPORT WINDS.....WEST 12 TO 18 MPH.
FORECASTER...MEGAN STACKHOUSE
REQUESTED BY...SHANE METCALF
TYPE OF REQUEST...WILDFIRE
.TAG 1914200.2/GJT
.DELDT 08/25/19
.FORMATTERVERSION 1.0.26
.EMAIL COGJC@FIRENET.GOV
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