Red Flag Warning
2025-12-20T00:00:00-07:00

...THIS IS A PARTICULARLY DANGEROUS SITUATION FOR IN AND IMMEDIATELY ADJACENT TO THE FOOTHILLS, BETWEEN 5500 AND 9000 FEET, FOR BOULDER AND JEFFERSON COUNTIES ON FRIDAY... Strong west winds of 30-40 mph with gusts as high as 85 mph in the foothills of Boulder and northern Jefferson Counties will continue until early evening. Relative humidity values had dropped into the upper single digits and lower teens. Thus, the Particularly Dangerous Situation will remain in place til around 5-6 pm, with only a slow improvement thereafter as winds slowly weaken. Red Flag conditions, however, will persist through the rest of the evening as we remain in a near record warm, dry, and windy airmass along the Front Range through midnight. In fact, strong, gusty winds will persist through much of the night with only a slow improvement in humidity values. Thus, near critical Red Flag conditions will occur into early Saturday morning. While most of the Denver metro area has seen lighter winds prevail most of the day, a period of strong, gusty winds is expected to develop this evening and likely last past midnight, producing Red Flag conditions there. * AFFECTED AREA...Fire Weather Zones 238, 240, 241, 242 and 243. * TIMING...Until midnight MST tonight. * WINDS...West 15 to 25 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.


Cahaba River River Levels

Last Updated: December 19, 2025

The Cahaba River flows through central Alabama and is approximately 194 miles in length.


Summary

Total streamflow across the Cahaba River was last observed at 1,325 cfs, and is expected to yield approximately 2,628 acre-ft of water today; about 22% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 5,980 cfs, with recent peaks last observed on 2014-04-08 when daily discharge volume was observed at 130,420 cfs.

Maximum discharge along the river is currently at the Cahaba River Near Marion Junction Al reporting a streamflow rate of 617 cfs. However, the streamgauge with the highest stage along the river is the Cahaba River Near Hoover with a gauge stage of 2.91 ft. This river is monitored from 9 different streamgauging stations along the Cahaba River, the highest being situated at an altitude of 679 ft, the Cahaba River At Trussville.

River Details

Last Updated 2025-12-19
Discharge Volume 2,628 ACRE-FT
Streamflow 1,325.05 cfs
+222.02 cfs (+20.13%)
Percent of Normal 22.16%
Maximum 130,420.0 cfs
2014-04-08
Seasonal Avg 5,980 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Cahaba River At Trussville
USGS 02423130
0 cfs 1.65 ft -72.39
Cahaba River Near Mountain Brook Al
USGS 02423380
49 cfs 0.78 ft 67.92
Cahaba River Near Hoover
USGS 02423496
49 cfs 2.91 ft 196.95
Cahaba River Near Cahaba Heights Al
USGS 02423425
26 cfs 1.56 ft 127.83
Cahaba River Near Helena Al
USGS 02423555
118 cfs 1.59 ft 137.42
Cahaba River Near Acton Al
USGS 02423500
62 cfs 2.27 ft 186.05
Cahaba River Near West Blocton Al
USGS 02423647
111 cfs 2.06 ft 8.82
Cahaba River At Centreville Al
USGS 02424000
293 cfs 0.86 ft 13.57
Cahaba River Near Marion Junction Al
USGS 02425000
617 cfs 2.36 ft 0.65
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Cahaba River is the longest substantially free-flowing river in Alabama and is among the most scenic and biologically diverse rivers in the United States. It is a major tributary of the Alabama River and part of the larger Mobile River basin. With headwaters near Birmingham, the Cahaba flows southwest, then at Heiberger turns southeast and joins the Alabama River at the ghost town and former Alabama capital of Cahaba in Dallas County. Entirely within central Alabama, the Cahaba River is 194 miles (312 km) long and drains an area of 1,870 square miles (4,800 km2).