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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.

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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.

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Deterministic Forecasts

Show only critical stages (fcst pts only)

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Peak Exceedance Probabilities*
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*Exceedance probabilities are only available for selected forecast points.

Observed Data
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	Latest Hour	1 Hr Ago	2 Hrs Ago	3 Hrs Ago
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Observed Water Year Flow To Date (WY2021)

Previous Water Year 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
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Monthly Archive
Month/Year:

Monthly Accumulated Flow (Data to Apr 2011)

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

% Normal		% Capacity
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Snow Data

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Data updated:

SWE	Sun 4/18	Sat 4/17
Fri 4/16	Thu 4/15	Wed 4/14
Tue 4/13	Mon 4/12	Sun 4/11

SWE Change

1 Day

5 Day

7 Day

Current Day SWE % of Normal

Current Day SWE % of Apr 1 Normal

Data updated:

Snow Depth	Sun 4/18	Sat 4/17
Fri 4/16	Thu 4/15	Wed 4/14
Tue 4/13	Mon 4/12	Sun 4/11

Snow Depth Change

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

Monthly Archive (Data back to Jan 1998)
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	% Avg	Value
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Observed Precipitation (QPE)

Short-Range Point Data

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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:

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

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Forecast Precipitation (QPF)

CNRFC Forecast Data
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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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Latest Hr	1 Hr Ago	2 Hrs Ago
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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
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Max T	Departure	24hr Chg	Normal


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Forecast Temperatures

Basin Temperature Plots
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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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Observed Freezing Levels
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Forecast Freezing Levels
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Flash Flood Guidance/Debris Flow

Flash Flood Guidance Grids
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Post-Wildfire Debris-Flow Basin Probability

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

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More info: USGS post-wildfire debris-flow hazards

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U.S. Drought Monitor

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

QPF Verification

Watches/Warnings/Advisories

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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 ]	Apr 18 2021 at 8:04 AM PDT	Apr 19 2021 at 9:00 AM PDT
RN	Russian Napa	[ Alternate Link ]	Apr 18 2021 at 8:00 AM PDT	Apr 19 2021 at 9:00 AM PDT
USA	Upper Sacramento	[ Alternate Link ]	Apr 18 2021 at 7:36 AM PDT	Apr 19 2021 at 9:00 AM PDT
LSC	Lower Sacramento	[ Alternate Link ]	Apr 18 2021 at 7:40 AM PDT	Apr 19 2021 at 9:00 AM PDT
SJ	San Joaquin	[ Alternate Link ]	Apr 18 2021 at 8:01 AM PDT	Apr 19 2021 at 9:00 AM PDT
CC	Central Coast	[ Alternate Link ]	Apr 18 2021 at 7:58 AM PDT	Apr 19 2021 at 9:00 AM PDT
SCA	Southern California	[ Alternate Link ]	Apr 18 2021 at 8:00 AM PDT	Apr 19 2021 at 9:00 AM PDT
ES	Eastern Sierra	[ Alternate Link ]	Apr 18 2021 at 8:13 AM PDT	Apr 19 2021 at 9:00 AM PDT
HBT	Humboldt	[ Alternate Link ]	Apr 18 2021 at 8:14 AM PDT	Apr 19 2021 at 9:00 AM PDT
SAC	Sacramento Delta (Tides)	[ Alternate Link ]	Apr 18 2021 at 7:38 AM PDT	Apr 19 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.

CNRFC Daily Briefing
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