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CNRFC Daily Briefing - View a graphical summary of current & forecast weather & hydrologic conditions. Updated by 10 AM PT.

2021 Tide Tables Available - The 2021 tide tables are now available on our river forecast page.

All River Guidance (Flood Forecast) Points Are Currently and Forecast to Remain Below Critical Stages

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The number inside each circle above represents the number of gages with observed conditions inside that category.

The number inside each circle above represents the number of gages with forecast conditions inside that category.

The number inside each circle above/below represents the number of gages with conditions inside that category.

Forecast
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The number inside each circle above represents the number of gages with observed conditions inside that category.

The number inside each circle above represents the number of gages with forecast conditions inside that category.

The number inside each circle above/below represents the number of gages with conditions inside that category.

Observed
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Rivers/Reservoirs

Deterministic Forecasts

Show only critical stages (fcst pts only)

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Peak Exceedance Probabilities*
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	10%	25%	50%	75%	90%
5-Day Peak
10-Day Peak

*Exceedance probabilities are only available for selected forecast points.

Observed Data
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Show only critical stages (applies to fcst pts only)

	Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago
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Latest Flood Outlook Product (updated daily)

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Water Resources

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Observed Water Year Flow To Date (WY2022)

Previous Water Year Flow for WY:

Previous Seasonal Flow for WY:

Forecast ESP Water Supply Seasonal Volume

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Observed Date of Peak Flow / Inflow
(Apr 1-Jul 31)

Forecast Date of Peak Flow / Inflow
(Apr 1-Jul 31)

Monthly Archive
Month/Year:

Monthly Accumulated Flow (Data to Apr 2011)

Reservoir Storage
(Data to 1925 for all reservoirs/1951 for "major")

% Normal		% Capacity
Major	All	Major	All

Snow Data

Point Data
Data updated:

SWE	Wed 10/20	Tue 10/19
Mon 10/18	Sun 10/17	Sat 10/16
Fri 10/15	Thu 10/14	Wed 10/13

SWE Change	1 Day	5 Day	7 Day
SWE Change	14 Day	30 Day

Current Day SWE % of Normal

Current Day SWE % of Apr 1 Normal

Data updated:

Snow Depth	Wed 10/20	Tue 10/19
Mon 10/18	Sun 10/17	Sat 10/16
Fri 10/15	Thu 10/14	Wed 10/13

Snow Depth Change	1 Day	5 Day	7 Day
Snow Depth Change	14 Day	30 Day

Daily Archive (Data back to Apr 2014)
M/D/Y:

Monthly Archive (Data back to Jan 1998)
Month/Year:

	% Avg	Value
Point*

* Jan-Jun only prior to 2019.

Observed Precipitation (QPE)

Short-Range Point Data

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Dots

Raw data updated:
QC data updated:

Most Recent Hours (Raw):
1	2	3	6	12	24	48	72	96	120	144	168

6-Hour Totals (QC'd = Quality-Controlled)

Ending 18Z (11 AM PDT)	Ending 00Z (5 PM PDT)	Ending 06Z (11 PM PDT)	Ending 12Z (5 AM PDT)
Raw	Raw	Raw	Raw
QC'd	QC'd	QC'd	QC'd

24-Hour Totals (QC'd = Quality-Controlled)

Raw - Ending 12 UTC (5 AM PDT)

QC'd - Ending 12 UTC (5 AM PDT)

Short-Range Gridded Data
Images created:

6-Hour

24-Hour

48-Hour

72-Hour

7-Day

Monthly/Water Year Archive (starts Oct 1996)
Month/Year:

Note: The water year starts on October 1 of the previous reference year and ends on September 30 of the reference year. For example, the 2020 Water Year began on October 1, 2019 and ended on September 30, 2020.

		% Avg	Value	Departure	Normal
Point	Monthly
Point	WY
Grid	Monthly
Grid	WY
Basin Avg	Monthly
Basin Avg	WY
Forecast Group	WY

Custom Multi-Year Precipitation

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Forecast Precipitation (QPF)

CNRFC Forecast Data
Forecast issued:

6-Hourly Gridded QPF

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24-Hourly Gridded QPF

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72-Hourly Gridded QPF

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Observed Temperatures

Point Data
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Instantaneous Temperatures

Latest Hr	1 Hr Ago	2 Hrs Ago
3 Hrs Ago	4 Hrs Ago	5 Hrs Ago

Temp Change:

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Past 24 Hours

Max/Min Temperatures

24-Hour Max Ending 12Z (5 AM PDT)	24-Hour Min Ending 12Z (5 AM PDT)	Daytime Max *	Overnight Min **

* Updated: 10 PM **Updated: 10 AM

Gridded Data
Images created:

Instantaneous Temps

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Max T	Departure	24hr Chg	Normal


Min T	Departure	24hr Chg	Normal

Forecast Temperatures

Basin Temperature Plots
Images created:

Basin Obs/Fcst Temperature Plots

Forecast Temperature Grids
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Max T

Departure

24hr Chg

Normal

Animate


Min T	Departure	24hr Chg	Normal

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Freezing Levels

Observed Freezing Levels
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Forecast Freezing Levels
Forecast issued:

Instantaneous FzLevel

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Flash Flood Guidance/Debris Flow

Flash Flood Guidance Grids
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6-hour

Post-Wildfire Debris-Flow Basin Probability

Debris Flow Probability (peak 15-min rainfall intensity of 24 mm/hr)

2021 Fires

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More info: USGS post-wildfire debris-flow hazards

Water Temperatures

Climate/Drought

U.S. Drought Monitor

U.S. Drought Monitor (Current and Archive)

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Climate Prediction Center Outlooks
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Extended Range Outlooks

Precipitation	6-10 Days	8-14 Days
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Long Lead Outlook

QPF Verification

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River Guidance Points Forecast Above Specified Stage Definitions (Select NWS ID for Specified Graphical RVF)

NWS ID	River / Creek	Gage / Station	Monitor Stage	Flood Stage	Danger Stage	Max Forecast Stage	Max Forecast Flow	Forecast Status
* NO River Guidance (Flood Forecast) Points Currently Forecast At Or Above Critical Stage Definitions *
NOTE Stage is presented in "Feet" while Flow is presented in "cfs".

River Guidance Forecast Group Issuance and Next Update Times (Select Forecast Group for Specified Text RVF)

FG ID	Forecast Group		Issuance Time	Next Update Time
SE	North Coast	[ Alternate Link ]	Oct 20 2021 at 8:09 AM PDT	Oct 21 2021 at 9:00 AM PDT
RN	Russian Napa	[ Alternate Link ]	Oct 20 2021 at 8:03 AM PDT	Oct 21 2021 at 9:00 AM PDT
USA	Upper Sacramento	[ Alternate Link ]	Oct 20 2021 at 8:13 AM PDT	Oct 21 2021 at 9:00 AM PDT
LSC	Lower Sacramento	[ Alternate Link ]	Oct 20 2021 at 8:14 AM PDT	Oct 21 2021 at 9:00 AM PDT
SJ	San Joaquin	[ Alternate Link ]	Oct 20 2021 at 8:15 AM PDT	Oct 21 2021 at 9:00 AM PDT
CC	Central Coast	[ Alternate Link ]	Oct 20 2021 at 7:58 AM PDT	Oct 21 2021 at 9:00 AM PDT
SCA	Southern California	[ Alternate Link ]	Oct 20 2021 at 7:53 AM PDT	Oct 21 2021 at 9:00 AM PDT
ES	Eastern Sierra	[ Alternate Link ]	Oct 20 2021 at 7:53 AM PDT	Oct 21 2021 at 9:00 AM PDT
HBT	Humboldt	[ Alternate Link ]	Oct 20 2021 at 7:46 AM PDT	Oct 21 2021 at 9:00 AM PDT
SAC	Sacramento Delta (Tides)	[ Alternate Link ]	Oct 20 2021 at 6:25 AM PDT	Oct 21 2021 at 9:00 AM PDT

NOTE 1 The Klamath and North Coast river guidance points are included in the North Coast Forecast Group.
NOTE 2 The Feather Yuba and American river guidance points are included in the Lower Sacramento River Forecast Group.
NOTE 3 The Delta Region, Upper and Lower San Joaquin river guidance points are combined in the San Joaquin River Forecast Group.

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