Fire Weather Watch
2025-12-20T00:00:00-07:00

...CRITICAL FIRE WEATHER CONDITIONS THURSDAY AND FRIDAY... Strong northwest winds will spread across the northeast plains after sunrise today, with gusts 45 to 65 mph creating critical fire weather conditions despite somewhat marginal humidity values near 20%. Early Friday, westerly downslope winds will bring strong gusts to the Front Range mountains and foothills, with potential for these to spread into wind-favored portions of the adjacent lower elevations. Peak gusts of 70-90 mph are increasing in likelihood for the windiest locations (considerably lower for areas along and east of I-25). With a warmer and drier air mass in place, humidity values in the teens look to extend into much of the foothills, and certainly across the lower elevations. Such conditions may be a longer duration than usual, with potential for low humidity to extend into the evening hours prior to the arrival of a front. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Friday morning through Friday evening. * AFFECTED AREA...Fire Weather Zones 215, 216, 241, 243, 245, 246 and 247. * TIMING...From Friday morning through late Friday evening. * WINDS...West 25 to 35 mph with gusts up to 80 mph in and near the foothills. West 15 to 25 mph with gusts up to 45 mph for areas roughly along and east of I-25. * RELATIVE HUMIDITY...As low as 10 to 15%. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.


Heart River River Levels

Last Updated: December 18, 2025

The Heart River is a 180-mile long tributary of the Missouri River located in North Dakota.


Summary

Total streamflow across the Heart River was last observed at 128 cfs, and is expected to yield approximately 254 acre-ft of water today; about 100% of normal. Average streamflow for this time of year is 128 cfs, with recent peaks last observed on 2014-04-09 when daily discharge volume was observed at 28,030 cfs.

Maximum discharge along the river is currently at the Heart River Nr Mandan reporting a streamflow rate of 101 cfs. This is also the highest stage along the Heart River, with a gauge stage of 10.02 ft at this location. This river is monitored from 5 different streamgauging stations along the Heart River, the highest being situated at an altitude of 2,452 ft, the Heart River Nr South Heart.

River Details

Last Updated 2025-12-01
Discharge Volume 254 ACRE-FT
Streamflow 128.3 cfs
-10.7 cfs (-7.7%)
Percent of Normal 100.0%
Maximum 28,030.0 cfs
2014-04-09
Seasonal Avg 128 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Heart River Nr South Heart
USGS 06343000
6 cfs 3.05 ft 19.87
Heart River Nr Richardton
USGS 06345500
17 cfs 4.57 ft 4.32
Heart R Ab Lake Tschida Nr Glen Ullin
USGS 06345780
27 cfs 3.02 ft 5
Heart River At Stark Bridge Nr Judson
USGS 06348300
61 cfs 2.67 ft 28.45
Heart River Nr Mandan
USGS 06349000
101 cfs 10.02 ft -10.62
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Heart River is a tributary of the Missouri River, approximately 180 miles (290 km) long, in western North Dakota, United States.