
Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >
COZ205-140100-
COZ205-140100-
Colorado River Headwaters-
248 AM MDT Wed May 13 2026
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
248 AM MDT Wed May 13 2026
...RED FLAG WARNING IN EFFECT FROM 2 PM UNTIL 9 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO
FIRE WEATHER ZONES 200, 202, 290 AND 292...
...RED FLAG WARNING IN EFFECT THURSDAY AFTERNOON THROUGH THURSDAY
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO
FIRE WEATHER ZONE 293...
.DISCUSSION...Localized critical fire weather conditions are
possible each day through the week. More widespread critical fire
weather conditions are expected today as winds increase, gusting 30-
40 mph, and single digit relative humidity persists. There is also
a small chance of isolated dry thunder over southwestern Colorado
this afternoon. Red Flag Warnings are in effect today for CO Fire
Weather Zones 200, 202, 290, and 292. Tomorrow, a Red Flag Warning
is in effect for CO Fire Weather Zone 293 due to continued gusty
winds and low humidity.
...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...
.TODAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly
cloudy (40-50%). Isolated showers after 1200.
Chc of lightning....0 percent.
Max temperature.....77-87 F.
Min humidity........9-14%.
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming
southwest 10 to 15 mph with gusts to 30 mph in
the afternoon.
CWR.................10 percent.
15K Ft MSL Winds....West 15 to 20 mph increasing to southwest 20 to
25 mph in the afternoon.
Mixing Height.......1000 ft AGL until 0900. 14000 ft AGL after
1000.
Transport Winds.....South 5 to 10 mph until 1200, then southwest 15
to 20 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (50-60%). Isolated showers.
Chc of lightning....0 percent.
Min temperature.....42-52 F.
Max humidity........56-71%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 30 mph decreasing to 20
mph after midnight.
CWR.................10 percent.
15K Ft MSL Winds....Southwest 25 to 35 mph increasing to west 30 to
40 mph after midnight.
Mixing Height.......8500 ft AGL until 2000, then 1000 ft AGL.
Transport Winds.....Southwest 5 to 10 mph.
Smoke dispersal.....Good until 2100, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....0 percent.
Max temperature.....68-78 F.
Min humidity........12-17%.
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming
west 10 to 15 mph in the afternoon. Localized
gusts up to 30 mph.
CWR.................0 percent.
15K Ft MSL Winds....West 25 to 35 mph decreasing to 20 to 30 mph in
the afternoon.
Mixing Height.......1000 ft AGL until 0800. 12500 ft AGL after
0900.
Transport Winds.....West 10 to 15 mph until 1200, then 20 to 25
mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Clear. Lows 33-43. Highs 67-77. West winds 10 to 20 mph
with gusts to 30 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 37-47. Highs 68-78. West winds 10 to 20 mph with gusts to
40 mph.
.SUNDAY...Breezy. Partly cloudy. Isolated showers and
thunderstorms. Lows 37-47. Highs 63-73. Southwest winds 15 to
25 mph with gusts to 45 mph.
.MONDAY...Cooler. Mostly cloudy. Scattered showers and
thunderstorms. Lows 31-41. Highs 50-60.
.TUESDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 26-36. Highs 56-66.