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NOAA / NWS News and Local CNRFC Information

2022 Water Year Peak Stage and Flow Data - The 2022 Water Year peak stage and flow data for the 100 flood forecast points have been added to the CNRFC website. Select a location from the map interface below to view individual data.

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.

Alert MessageAt Least One River Guidance (Flood Forecast) Point Is Currently or Forecast to Exceed Flood StageAlert Message

 
Recently-Issued CNRFC Text Products:  
 

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Geographic
Overlays
    2022    2021    2020
 

Topography

Topography/USGS

ESRI Topography

Shaded Relief

Imagery

Nat'l Geographic

Topo/Rivers

Topo/Hydro

Light Gray
 
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 

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):


 

 







Monthly Archive
Month/Year:     

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

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
 
 


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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:     
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 Avg
Point Month
   
WY
   
Grid Month
WY
Basin
Avg		 Month
     
WY
     
Forecast
Group		 WY
     


 From Water Year:   to: 

Forecast Precipitation (QPF)

CNRFC Forecast Data
Forecast issued:
 
 

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

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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 Tue May 30, 2023


    QPE    
QPF

Watches/Warnings/Advisories

Last updated:
 

Mid-Atlantic RFCOhio RFCNortheast RFCNorth-Central RFCMissouri Basin RFCLower Mississippi RFCWest Gulf RFCArkansas-Red Basin RFCSoutheast RFCNorthwest RFCColorado Basin RFCCalifornia-Nevada RFCAlaska-Pacific RFCMap showing all 13 RFCs
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River Guidance Points Forecast Above Specified Stage Definitions  (Select NWS ID for Specified Graphical RVF)
NWS IDRiver / CreekGage / StationMonitor
Stage		Flood
Stage		Danger
Stage		Latest Observed
Stage / Flow		Latest Observed
Date / Time
Max Forecast
Stage / Flow		Forecast
Status
RVBC1SACRAMENTO RIO VISTA 7.411.912.95.6  /  NA05/31 04:30 PM PDT8.5  /  NAAbove Monitor
POHC1MERCED YOSEMITE NP AT POHONO BR 10.09.16  /  5,54105/31 04:00 PM PDT11.3  /  8,365Above Flood
STVC1MERCED STEVINSON 68.071.069.24  /  4,89105/31 04:00 PM PDT69.4  /  4,981Above Monitor
NWMC1SAN JOAQUIN NEWMAN 63.069.470.463.85  /  14,92305/31 03:45 PM PDT63.8  /  14,718Above Monitor
MDSC1TUOLUMNE MODESTO 50.555.054.60  /  10,58905/31 04:30 PM PDT54.6  /  10,582Above Monitor
VNSC1SAN JOAQUIN VERNALIS 24.529.029.526.75  /  27,64705/31 03:45 PM PDT26.8  /  27,727Above Monitor
WOOC1WEST FORK CARSON WOODFORDS 12.513.513.10  /  79405/31 04:35 PM PDT13.4  /  1,007Above Monitor
GRDN2EAST FORK CARSON GARDNERVILLE 13.014.012.74  /  3,47005/31 04:40 PM PDT13.3  /  4,313Above Monitor
WWBC1WEST WALKER BLO LITTLE WALKER RIVER 5.56.05.30  /  2,17405/31 04:30 PM PDT6.0  /  3,023Above Flood
MASN2WALKER MASON AT SNYDER LANE 9.09.811.21  /  3,45705/31 04:35 PM PDT11.1  /  3,355Above Flood
MHSN2MARYS ABOVE HOT SPRINGS CREEK 5.56.05.67  /  45505/31 04:15 PM PDT5.7  /  464Above Monitor
PALN2HUMBOLDT PALISADE 6.07.06.69  /  3,47605/31 04:40 PM PDT6.7  /  3,526Above Monitor
HBMN2HUMBOLDT BATTLE MOUNTAIN 8.59.510.64  /  3,10305/31 04:15 PM PDT10.6  /  3,066Above Flood
CMSN2HUMBOLDT COMUS 8.59.510.59  /  2,17405/31 04:15 PM PDT10.9  /  2,825Above Flood

** 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 GroupIssuance TimeNext Update Time
SENorth Coast[ Alternate Link ]May 31 2023 at 8:13 AM PDTJun 01 2023 at 9:00 AM PDT
RNRussian Napa[ Alternate Link ]May 31 2023 at 8:09 AM PDTJun 01 2023 at 9:00 AM PDT
USAUpper Sacramento[ Alternate Link ]May 31 2023 at 7:58 AM PDTJun 01 2023 at 9:00 AM PDT
LSCLower Sacramento[ Alternate Link ]May 31 2023 at 8:12 AM PDTJun 01 2023 at 9:00 AM PDT
SJSan Joaquin[ Alternate Link ]May 31 2023 at 8:46 AM PDTJun 01 2023 at 9:00 AM PDT
CCCentral Coast[ Alternate Link ]May 31 2023 at 8:03 AM PDTJun 01 2023 at 9:00 AM PDT
SCASouthern California[ Alternate Link ]May 31 2023 at 8:03 AM PDTJun 01 2023 at 9:00 AM PDT
ESEastern Sierra[ Alternate Link ]May 31 2023 at 9:57 AM PDTJun 01 2023 at 9:00 AM PDT
HBTHumboldt[ Alternate Link ]May 31 2023 at 7:51 AM PDTJun 01 2023 at 9:00 AM PDT
SAC Sacramento Delta (Tides) [ Alternate Link ]May 31 2023 at 6:07 AM PDTJun 01 2023 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, 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
** 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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