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NOAA / NWS News and Local CNRFC Information

CNRFC 2025 Water Year Updates - The CNRFC has created a document describing the changes to CNRFC operations and products for the 2025 Water Year. To view this presentation, select here.

!!! IMPORTANT !!! Flood Threshold Terminology Changes - On October 29, the CNRFC updated flood threshold terminology and corresponding colors to align with the National Weather Service (NWS) standards across the country. The new terminology and colors were implemented on all CNRFC webpages, including the front map interface and individual river forecast points. More information can be found here.

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

All River Flood Forecast Points Are Currently Forecast to Remain Below Critical Stages

 
Recently-Issued CNRFC Text Products:  
 

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Topography

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ESRI Topography

Shaded Relief

Imagery

Nat'l Geographic

Topo/Rivers

Topo/Hydro

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Federal Lands
Legend for federal lands background layer.
 
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):
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.



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Rivers/Reservoirs

Deterministic 5-Day Forecasts 

Data updated:
Ensemble Forecasts
Data updated:


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:

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 
Link to




Significant River Flood Outlook
Data updated:
Valid:

      National Significant River Flood Outlook

Water Resources

Data updated (unless otherwise noted):

Statistic for % normal:

 

 







Monthly Archive
Month/Year:     
Statistic for % normal:

Reservoir Storage
(Data to 1925 for all reservoirs/1951 for "major")
% Normal % Capacity
HEFS Verification Product Help



Snow Data

National Gridded Data



Select date:     To:
Point Data
Data updated:
SWE
SWE Change




Data updated:
Snow Depth
Snow Depth Change
Daily Archive (Data back to Apr 2014)
M/D/Y:     
  Basin Elevation Zones % Avg % Apr 1
Avg		 Value
Simulated
Basin
Avg		 Middle/Upper
Lower/Only
All Zones
Monthly Archive (Data back to Jan 1998)
Month/Year:     
  % Avg Value
Point*
* Jan-Jun only prior to 2019.

Observed Precipitation (QPE)

Radar Data
 
 


Select radar time:  

Short-Range Point Data

Raw data updated:
QC data updated:   
Most Recent Hours (Raw):














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


Short-Range Gridded Data
Images created:






     
Monthly/Water Year Archive (starts Oct 1996)
Month/Year:     
What is a Water Year?
    % Avg Value Departure Avg
Point Month
   
WY
   
Grid Month
WY
Basin
Avg		 Month
     
WY
     
HUC8
Avg		 Month
     
WY
     
Forecast
Group		 WY
     


 From Water Year:   to: 

Forecast Precipitation (QPF)

CNRFC Forecast Data
Forecast issued:
 
 

Select forecast time:  


 

Select forecast time:  





     
WPC Forecast Data
Day 1 issued:
Day 2 issued:
Day 3 issued:
Days 1-3 issued:
Days 1-7 issued:
WPC 6-Hourly QPF
Select forecast time:  


WPC 24-Hourly QPF
Select forecast time:  


WPC 72-Hourly QPF

WPC 7-Day QPF

Observed Temperatures

Point Data
Data updated:
QC data updated:
Instantaneous Temperatures
Temp Change:
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:
 
 

Select obs time:  







Forecast Temperatures

Basin Temperature Plots
Images created:


Forecast Temperature Grids
Images created:




  







  




Freezing Levels

Observed Freezing Levels
Images created:
  

Select forecast time:  


Forecast Freezing Levels
Forecast issued:
  

Select forecast time:  


Flash Flood Guidance/Debris Flow

Flash Flood Guidance Grids
Images created:



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)

More info: USGS post-wildfire debris-flow hazards

Water Temperatures

Data updated:






Climate/Drought

U.S. Drought Monitor

Select issuance date range:
From:     To:

Climate Prediction Center Outlooks
Drought Outlooks
Extended Range Outlooks
Precipitation
Temperatures
Long Lead Outlook
Precipitation
Temperatures

QPF Verification

24-Hour QPF Verification Grids
Images created:
Date: (ending 4am PST / 5am PDT) Select forecast to verify:
Day 1 forecast created Thu May 8, 2025


    QPE    
QPF

Watches/Warnings/Advisories

Last updated:
 

Map showing all 13 RFCs Northwest RFC Missouri Basin RFC North-Central RFC Ohio RFC Northeast RFC Mid-Atlantic RFC Southeast RFC Lower Mississippi RFC Arkansas-Red Basin RFC West Gulf RFC Colorado Basin RFC California Nevada RFC Alaska-Pacific RFC
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River Guidance Points Forecast Above Specified Stage Definitions  (Select NWS ID for Specified Graphical RVF)
NWS ID River / CreekGage / StationAction/
Monitor		Minor
Flood		Moderate
Flood		Major
Flood		Latest Observed
Stage / Flow		Latest Observed
Date / Time
Max Forecast
Stage / Flow

*** NO River Guidance (Flood Forecast) Points Currently Forecast At Or Above Critical Stage Definitions ***

** NOTE **  Stage is presented in "Feet" while Flow (Storage at CLKC1) is presented in "cfs" ("Acre-Feet").
River Guidance Forecast Group Issuance and Next Update Times  (Select Forecast Group for Specified Text RVF)
FG IDForecast Bulletin GroupIssuance TimeNext Update Time
SENorth Coast[ Alternate Link ]CSVMay 09 2025 at 8:06 AM PDTMay 10 2025 at 9:00 AM PDT
RNRussian Napa[ Alternate Link ]CSVMay 09 2025 at 8:12 AM PDTMay 10 2025 at 9:00 AM PDT
USAUpper Sacramento[ Alternate Link ]CSVMay 09 2025 at 8:19 AM PDTMay 10 2025 at 9:00 AM PDT
LSCLower Sacramento[ Alternate Link ]CSVMay 09 2025 at 8:34 AM PDTMay 10 2025 at 9:00 AM PDT
SJSan Joaquin[ Alternate Link ]CSVMay 09 2025 at 8:40 AM PDTMay 10 2025 at 9:00 AM PDT
CCCentral Coast[ Alternate Link ]CSVMay 09 2025 at 8:18 AM PDTMay 10 2025 at 9:00 AM PDT
SCASouthern California[ Alternate Link ]CSVMay 09 2025 at 8:20 AM PDTMay 10 2025 at 9:00 AM PDT
ESEastern Sierra[ Alternate Link ]CSVMay 09 2025 at 8:26 AM PDTMay 10 2025 at 9:00 AM PDT
HBTHumboldt[ Alternate Link ]CSVMay 09 2025 at 8:25 AM PDTMay 10 2025 at 9:00 AM PDT
SAC Sacramento Delta (Tides) [ Alternate Link ] May 09 2025 at 6:36 AM PDTMay 10 2025 at 9:00 AM PDT
 
** NOTE 1 **  The Klamath and North Coast Forecast Group river guidance points are included in the North Coast Bulletin Group.
** NOTE 2 **  The Feather Yuba, American, and Cache Putah Forecast Group river guidance points are included in the Lower Sacramento River Bulletin Group.
** NOTE 3 **  The Delta Region, Upper and Lower San Joaquin, and Tulare Forecast Group river guidance points are combined in the San Joaquin River Bulletin Group.
** NOTE 4 **  The Salinas Pajaro and South Bay Forecast Group river guidance points are included in the Central Coast Bulletin Group.
** NOTE 5 **  The Southern California and San Diego/Inland Forecast Group river guidance points are included in the Southern California Bulletin Group.
CNRFC Daily Briefing
Observed Precipitation Graphical Discussion Forecast Precipitation
** Note ** Click on Indvidual Images to Expand.
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US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
California Nevada River Forecast Center
3310 El Camino Avenue, Room 227
Sacramento, CA 95821-6373
(916) 979-3056

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