
Showers and thunderstorms are expected from Texas to the Northeast through Tuesday. Heavy rain will create mainly localized areas of flash flooding across the central Gulf Coast into the Appalachians. Elevated to Critical fire weather conditions due to gusty winds and low humidity are expected through Tuesday across Oregon and Nevada. Showers and thunderstorms will develop over the Northwest. Read More >
COZ205-261045-
COZ205-261045-
Colorado River Headwaters-
1235 PM MDT Mon May 25 2026
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1235 PM MDT Mon May 25 2026
...FIRE WEATHER WATCH IN EFFECT WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR
COLORADO FIRE WEATHER ZONES 207 AND 290, AS WELL AS UTAH FIRE
WEATHER ZONES 486, 487 AND 490...
.DISCUSSION...
Wetter conditions pass through Monday and Tuesday, keeping fire
weather concerns minimal. Drier flow and stronger winds arrive on
Wednesday and persist through Friday. All three days are expected
to see widespread critical fire weather conditions, focused in
eastern Utah and southwestern Colorado. Though dry conditions stay
in place through the weekend, winds will weaken during this
period, reducing fire weather concerns.
...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...
.TONIGHT...
Sky/weather.........Mostly cloudy (70-80%). Scattered showers and
isolated thunderstorms until 2400, isolated
showers after 2400.
Chc of lightning....20 percent.
Min temperature.....41-51 F.
Max humidity........66-81%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................20 percent.
15K Ft MSL Winds....South 15 to 20 mph.
Mixing Height.......5000 ft AGL until 2000, then 1000 ft AGL.
Transport Winds.....Southeast 5 mph.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy (60-70%). Isolated thunderstorms
until 1200. Scattered showers. Scattered
thunderstorms after 1200.
Chc of lightning....50 percent.
Max temperature.....63-73 F.
Min humidity........34-44%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................50 percent.
15K Ft MSL Winds....South 15 to 20 mph.
Mixing Height.......500 ft AGL until 0800, then 5000 ft AGL.
Transport Winds.....South 5 to 10 mph.
Smoke dispersal.....Poor until 0900. Fair after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (40-50%). Scattered showers and isolated
thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....38-48 F.
Max humidity........73-88%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................20 percent.
15K Ft MSL Winds....Southwest 15 to 20 mph.
Mixing Height.......3000 ft AGL until 2000, then 1000 ft AGL.
Transport Winds.....Southeast 5 to 10 mph.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....67-77 F.
Min humidity........18-28%.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph.
CWR.................10 percent.
15K Ft MSL Winds....Southwest 15 to 20 mph becoming south 10 to 15
mph in the afternoon.
Mixing Height.......1000 ft AGL until 0800. 11000 ft AGL after
0900.
Transport Winds.....South 5 to 10 mph.
Smoke dispersal.....Poor until 0900. Very good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered showers and isolated
thunderstorms. Lows 38-48. Highs 72-82. Winds less than 15 mph.
.FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows
39-49. Highs 67-77. Southwest winds 10 to 20 mph with gusts to
35 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 36-46. Highs 64-74. Winds less than 15 mph.
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
36-46. Highs 68-78.
.MONDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 38-48. Highs 69-79.