NOAA / NWS News and Local CNRFC Information

2023 Tide Tables Available - The 2023 tide tables are now available on our river forecast page.

October 17 - 26, 2021 Storm Summary - The CNRFC has published a comprehensive summary of the significant early season precipitation event affecting California and northern Nevada in October 2021. This study includes precipitation data, a discussion of weather conditions, resulting hydrologic impacts, and verification of CNRFC forecasts. To view this study, please visit our Storm Summaries webpage or go directly to the report.

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

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

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Geographic Overlays	CNRFC Boundary	States	Basins	Counties	Lakes	WFOs
Geographic Overlays	Major Rivers	Rivers	Nat'l Parks	Burn Areas 2022 2021 2020

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Topography	Topography/USGS	ESRI Topography
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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
(large dots)

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
(small dots)

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Rivers/Reservoirs

Deterministic Forecasts

Show only critical stages (fcst pts only)

Data updated:

Forecast Points

Other Points

Ensemble Forecasts
Data updated:

Ensemble Points

Peak Exceedance Probabilities*
Data updated:

	10%	25%	50%	75%	90%
5-Day Peak
10-Day Peak

*Exceedance probabilities are only available for selected forecast points.

Observed Data
Data updated:

Show only critical stages (applies to fcst pts only)

	Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago
Forecast Points
Other Points
Reservoirs

Deterministic Forecast + Observed Data
Fcst data updated:
Obs data updated:

Forecast Points Show only critical stages
Link to observed forecast
Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago

Significant River Flood Outlook
Data updated:
Valid:

Latest Flood Outlook Product (updated daily)

National Significant River Flood Outlook

Water Resources

Data updated (unless otherwise noted):

Observed Water Year Flow To Date (WY2023)

Previous Water Year Flow for WY:

Previous Seasonal Flow for WY:

Forecast ESP Water Supply Seasonal Volume

Forecast ESP Water Year Volume

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 11/30	Tue 11/29
Mon 11/28	Sun 11/27	Sat 11/26
Fri 11/25	Thu 11/24	Wed 11/23

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 11/30	Tue 11/29
Mon 11/28	Sun 11/27	Sat 11/26
Fri 11/25	Thu 11/24	Wed 11/23

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

Values

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 (10 AM PST)	Ending 00Z (4 PM PST)	Ending 06Z (10 PM PST)	Ending 12Z (4 AM PST)
Raw	Raw	Raw	Raw
QC'd	QC'd	QC'd	QC'd

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

Raw - Ending 12 UTC (4 AM PST)

QC'd - Ending 12 UTC (4 AM PST)

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

Forecast Precipitation (QPF)

CNRFC Forecast Data
Forecast issued:

6-Hourly Gridded QPF

Animate

Select forecast time:

24-Hourly Gridded QPF

Animate

Select forecast time:

72-Hourly Gridded QPF

6-Day Gridded QPF

Observed Temperatures

Point Data
Data updated:
Instantaneous Temperatures

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

Temp Change:

Past Hour

Past 24 Hours

Max/Min Temperatures

24-Hour Max Ending 12Z (4 AM PST)	24-Hour Min Ending 12Z (4 AM PST)	Daytime Max *	Overnight Min **

* Updated: 9 PM **Updated: 9 AM

Gridded Data
Images created:

Instantaneous Temps

Animate

Select obs time:


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
Images created:

Max T

Departure

24hr Chg

Normal

Animate


Min T	Departure	24hr Chg	Normal

Animate

Freezing Levels

Observed Freezing Levels
Images created:

Instantaneous FzLevel

Animate

Select forecast time:

Forecast Freezing Levels
Forecast issued:

Instantaneous FzLevel

Animate

Select forecast time:

Flash Flood Guidance/Debris Flow

Flash Flood Guidance Grids
Images created:

1-hour	3-hour	6-hour
Note: Recent burn areas are typically more vulnerable to flash flooding and debris flows. Check with your local NWS Forecast Office for fire specific guidance.

Post-Wildfire Debris-Flow Basin Probability

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

2022 Fires

2021 Fires

2020 Fires

More info: USGS post-wildfire debris-flow hazards

Water Temperatures

Climate/Drought

U.S. Drought Monitor

U.S. Drought Monitor (Current and Archive)

Select issuance date range:

From: To:

Climate Prediction Center Outlooks
Drought Outlooks

Monthly

Seasonal

Extended Range Outlooks

Precipitation	6-10 Days	8-14 Days
Temperatures	6-10 Days	8-14 Days

Long Lead Outlook

QPF Verification

Watches/Warnings/Advisories

Disclaimer

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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 ]	Nov 30 2022 at 1:44 PM PST	Dec 01 2022 at 9:00 AM PST
RN	Russian Napa	[ Alternate Link ]	Nov 30 2022 at 1:49 PM PST	Dec 01 2022 at 9:00 AM PST
USA	Upper Sacramento	[ Alternate Link ]	Nov 30 2022 at 1:48 PM PST	Dec 01 2022 at 9:00 AM PST
LSC	Lower Sacramento	[ Alternate Link ]	Nov 30 2022 at 2:13 PM PST	Dec 01 2022 at 9:00 AM PST
SJ	San Joaquin	[ Alternate Link ]	Nov 30 2022 at 2:19 PM PST	Dec 01 2022 at 9:00 AM PST
CC	Central Coast	[ Alternate Link ]	Nov 30 2022 at 2:24 PM PST	Dec 01 2022 at 9:00 AM PST
SCA	Southern California	[ Alternate Link ]	Nov 30 2022 at 1:57 PM PST	Dec 01 2022 at 9:00 AM PST
ES	Eastern Sierra	[ Alternate Link ]	Nov 30 2022 at 2:15 PM PST	Dec 01 2022 at 9:00 AM PST
HBT	Humboldt	[ Alternate Link ]	Nov 30 2022 at 2:17 PM PST	Dec 01 2022 at 9:00 AM PST
SAC	Sacramento Delta (Tides)	[ Alternate Link ]	Nov 30 2022 at 6:03 AM PST	Dec 01 2022 at 9:00 AM PST

NOTE 1 The Klamath and North Coast river guidance points are included in the North Coast Forecast Group.
NOTE 2 The Feather Yuba, American, and Cache Putah river guidance points are included in the Lower Sacramento River Forecast Group.
NOTE 3 The Delta Region, Upper and Lower San Joaquin, and Tulare river guidance points are combined in the San Joaquin River Forecast Group.
NOTE 4 The Salinas Pajaro and South Bay river guidance points are included in the Central Coast Forecast Group.
NOTE 5 The Southern California and San Diego/Inland river guidance points are included in the Southern California Forecast Group.

CNRFC Daily Briefing
Observed Precipitation	Graphical Discussion	Forecast Precipitation

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