National Weather Service United States Department of Commerce

Life-Threatening Flash Flooding in South Central Texas; Heat Continues from the Northern Plains to the Mid-Atlantic

Life-threatening and locally catastrophic flash and urban flooding is expected across portions of south-central Texas through early Friday, with significant river flooding and rapid rises on small streams, arroyos, and typically dry washes expected. A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek. Read More >

COZ205-152330-
COZ205-152330-
Colorado River Headwaters-
125 AM MDT Wed Jul 15 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
125 AM MDT Wed Jul 15 2026

.DISCUSSION...A wetter and slightly cooler regime is forecast
to western Colorado and eastern Utah through the remainder of 
the week. This is relative as temperatures stay above normal. 
However daily storms are adding moisture to the airmass under
this strong high and each day through Friday should see an
uptick in storm activity. This will aid in getting wetting 
rainfall to the ground in areas that have been missing out. 
The downfall will be an increased threat of burn scar flooding
as storms become more efficient at producing heavy rainfall. 

...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 (10-20%) until 1200, then partly 
                    cloudy (40-50%). Scattered showers and 
                    thunderstorms after 1200. 
Chc of lightning....30 percent. 
Max temperature.....83-93 F. 
Min humidity........12-22%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................30 percent. 
15K Ft MSL Winds....North 10 to 15 mph. 
Mixing Height.......1500 ft AGL until 0900. 12000 ft AGL after 
                    1200. 
Transport Winds.....West 5 mph until 1200, then north. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....20 percent. 
Min temperature.....55-65 F. 
Max humidity........56-71%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent. 
15K Ft MSL Winds....North 10 to 15 mph. 
Mixing Height.......9000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Fair until 2100, then poor. 

.THURSDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (50-60%). Isolated showers until 1200, 
                    then scattered showers and thunderstorms. 
Chc of lightning....30 percent. 
Max temperature.....81-91 F. 
Min humidity........16-26%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent. 
15K Ft MSL Winds....Northeast 10 to 15 mph. 
Mixing Height.......1500 ft AGL until 0900. 11500 ft AGL after 
                    1000. 
Transport Winds.....West 5 mph until 1200, then north. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 78-88. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 79-89. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 51-61. Highs 80-90. Winds less than 15 mph. 
.MONDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
51-61. Highs 78-88. 
.TUESDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 50-60. Highs 74-84.