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, sustained 45-55 mph with gusts upwards of 85- 105 mph, are expected in the foothills of Larimer, Boulder and Jefferson Counties beginning early Friday morning. Relative humidity values are expected to drop into the low teens, possibly upper single digits. While Red Flag conditions, critical fire weather, are expected across a larger area in northern Colorado, the most extreme conditions are expected to be along Highway 93 from Jefferson County into Boulder County and along US-36 north of Boulder to the Larimer County line and westward. There will be a high potential for fast moving wildfires, should any new starts occur. Winds toward I-25 and eastward will be slower to develop, and also speeds will be considerably lighter. That said, gusts of 25- 40 mph are still expected to combine with very low humidity and cured grasses to support critical fire weather conditions. Such conditions may be a longer duration than usual, with potential for low humidity to extend well into the evening hours. * AFFECTED AREA...Fire Weather Zones 238, 240, 241, 242 and 243. * TIMING...From 10 AM this morning to midnight MST tonight. * WINDS...West 15 to 25 mph with gusts up to 60 mph possible west of I-25, and gusts to 40 mph possible along and east of I- 25. * RELATIVE HUMIDITY...As low as 12 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.
Summary
Total streamflow across the
Pearl River
was last observed at
7,298
cfs, and is expected to yield approximately
14,475
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
33,042 cfs,
with recent peaks last observed
on
2020-02-22 when daily discharge volume was observed at
382,590 cfs.
Maximum discharge along the river is currently at the
Pearl River Near Bogalusa
reporting a streamflow rate of 2,750 cfs.
This is also the highest stage along the Pearl River, with a gauge stage of
7.58 ft at this location.
This river is monitored from 9 different streamgauging stations along the Pearl River, the highest being situated at an altitude of 382 ft, the
Pearl River At Burnside.
River Details
| Last Updated | 2025-12-19 |
| Discharge Volume | 14,475 ACRE-FT |
| Streamflow |
7,298.0 cfs
-297.0 cfs (-3.91%) |
| Percent of Normal | 22.09% |
| Maximum |
382,590.0 cfs
2020-02-22 |
| Seasonal Avg | 33,042 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Pearl River At Burnside
USGS 02481880 |
1070 cfs | 5.71 ft | -12.3 | |||||
|
Pearl River At Edinburg
USGS 02482000 |
133 cfs | 3.82 ft | 8.13 | |||||
|
Pearl River Nr Lena
USGS 02483500 |
384 cfs | 4.88 ft | 1.05 | |||||
|
Pearl River Nr Carthage
USGS 02482550 |
205 cfs | 4.72 ft | 0 | |||||
|
Pearl River At Jackson
USGS 02486000 |
331 cfs | 3.71 ft | 8.17 | |||||
|
Pearl River Nr Rockport
USGS 02488000 |
685 cfs | 5.76 ft | -14.48 | |||||
|
Pearl River Nr Monticello
USGS 02488500 |
880 cfs | 5.24 ft | -20 | |||||
|
Pearl River Nr Columbia
USGS 02489000 |
1930 cfs | 1.3 ft | -10.23 | |||||
|
Pearl River Near Bogalusa
USGS 02489500 |
2750 cfs | 7.58 ft | 8.7 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Pearl River Delta Metropolitan Region (PRD, Chinese: 珠江三角洲城市圈; pinyin: Zhūjiāng Sānjiǎozhōu Chéngshìquān) is the low-lying area surrounding the Pearl River estuary, where the Pearl River flows into the South China Sea. It is one of the most densely urbanized regions in the world, and is often considered as a megacity. It is now the wealthiest region in South China and one of the wealthiest in the whole of China along with Yangtze River Delta in East China and Jingjinji in North China. The region's economy is referred to as Pearl River Delta Economic Zone, it is also part of the Guangdong-Hong Kong-Macau Greater Bay Area.
The PRD is a megalopolis, with future development into a single mega metropolitan area, yet itself is at the southern end of a larger megalopolis running along the southern coast of China, which include metropolises such as Chaoshan, Zhangzhou-Xiamen, Quanzhou-Putian and Fuzhou. The nine largest cities of the PRD had a combined population of 57.15 million at the end of 2013, comprising 53.69% of the provincial population. According to the World Bank Group, the PRD has become the largest urban area in the world in both size and population.The west side of this region, along with Chaoshan, was also the source of much Chinese emigration from the 19th to the mid 20th centuries, including to the Western world, where they formed many Chinatowns. Today, much of the Chinese diaspora in the US, Canada, Australia, Latin America, and much of Southeast Asia traces their ancestry to the west side of this region. Its dominant language is Cantonese.