California, 2017

Drought in California, January 1 to 31, 2017

January 1 to 31, 2017 · NWS HNX · 11 events in 11 counties and zones

The California drought strength lessened over during the month of January, 2017. 76 precipitation during the month.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
11

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS HNX wrote it up.

The California drought strength lessened over during the month of January, 2017. Fresno received 5.50 of precipitation and Bakersfield received 2.76 precipitation during the month. Fresno had much above normal precipitation with 3.31 above normal. Bakersfield had significantly above normal precipitation with 1.60 above the normal precipitation amounts. Above normal precipitation amounts did allow for continued improvement on drought conditions with an increase in soil moisture and significant reservoir recharge.

The U.S. Drought Monitor continued to report drought conditions across the entire Central California region. However, several reductions in the drought category occurred during the month. The first happened on January 10th across the northern most portions of the area due to above normal rainfall. The trend continued the following week across the Sierra Nevada Range north of Sequoia National Park. This too was due to above normal precipitation and a good amount of snow pack. Valley locations were still experiencing many dry wells even with the above normal precipitation. However, by the 24th valley locations too had a reduction in category as streams and lakes began to fill due to the wet month. Only a small area in southwestern Kern county had the Extreme (D3) category left, though most of the San Joaquin Valley were still under Severe Drought (D2). The month ended with only the San Emigdio Mountains remaining under Extreme Drought (D3).

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hanford, CA wrote its last area forecast discussion before the first event at Dec 31, 3:44 PM PST, 8 hours 16 minutes earlier.

Area forecast discussion, Dec 31, 3:44 PM PST, 8 hours 16 minutes before
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
344 PM PST Sat Dec 31 2016

.UPDATE...Updated air quality issues.

&&

.SYNOPSIS...
Low pressure center off the Central California coast will bring in
San Joaquin Valley rain and snow to the Kern county mountains
tonight. Unsettled weather will continue through Monday. Another
storm system is expected to reach the region by Wednesday and
remain unsettled through next Saturday.

&&

.DISCUSSION...
Tonight...Upper low off the central California coast is providing
plenty of lift across the SJV for moderate rain this afternoon.
The low center is tracking south into SOCAL this evening with
cold air moving in behind it. Snow levels are expected to drop
very quickly this evening across the Kern Co mountains. Snow
levels are expected to drop down to pass level as the upper low
pushes into SOCAL tonight. We currently have a Winter Weather
Advisory in effect for dangerous travel across the Grapevine and
the Tehachapi passes.

Sunday...Weak ridging behind the upper low center moving through
will quiet things down a bit. guidance is still trying to provide
some shower activity in the Sierra as NW flow aloft will provide
some upslope flow for clouds and a few showers Sunday afternoon
and evening. We may once again see some patchy fog development in
the SJV late Sunday night into Monday morning.

Monday and Tuesday...This is where things get difficult as far the
forecast goes. All of the guidance had previously been advertising
a very cold arctic low center dropping south out of Western
Canada into our region by Tuesday. There had been forecast
precipitation ahead of the front that was expected to drop south
into our area by Wednesday. Well, the guidance has backed off
that solution significantly and stalls the front to our North intoNRN
Ca.

Wednesday and Thursday...New guidance is bringing a weak wave
along the stalled arctic front to our north and clips our NRN CWA
Wednesday night. Again, this is huge change from the previous
forecast with not only chances of precipitation but also
temperature forecasts. At this point we are not going to totally
buy into this pattern change and will trend towards the new
solution. We have lowered pops a bit and warmed up temps a bit,
but not really buying into the guidance yet....since it such a
huge change.

Friday and Saturday...Deep closed low center over the Gulf of AK
slips south off the PAC NW coast as airmass modifies a bit. Upper
ridge over Baja in conjunction with the deep upper sets up an
Atmospheric River situation for potentially heavy precipitation
event starting Friday and continuing through Saturday or even
longer. With this pattern, warmer temperatures would also be
expected with high snow levels.

&&

.AVIATION...Precipitation spreading eastward over San Joaquin
Valley with areas of MVFR and local IFR conditions thru 12Z Sun. In
the Southern Sierra Nevada, areas of mountain obscuring IFR ceilings
in low clouds and precipitation thru around 12Z Sunday for areas
mainly north of Kern County. In Kern County, expect MVFR conditions
and showers, except IFR ceilings due to mountain obscurations
through 18Z Sun. In addition, isolated thunderstorms possible in
much of Kern County with gusty winds and heavy rain at times thru
06Z Sunday. Otherwise, VFR conditions are expected through the next
24 hours.

&&

.AIR QUALITY ISSUES...
None.

&&

.CERTAINTY...

The level of certainty for days 1 and 2 is low.
The level of certainty for days 3 through 7 is low.

Certainty levels include low...medium...and high. Please visit
www.weather.gov/hnx/certainty.php for additional information
an/or to provide feedback.

&&

.HNX Watches/Warnings/Advisories...
Winter Weather Advisory until midnight PST tonight CAZ095.

&&

public...JDB
avn/fw...BSO
synopsis...JDB

weather.gov/hanford

In the hours before

Local storm report, Dec 31, 7:30 PM PST, 4 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HANFORD CA
730 PM PST SAT DEC 31 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0725 PM     FLASH FLOOD      3 ENE LAMONT            35.29N 118.86W
12/31/2016                   KERN               CA   LAW ENFORCEMENT

            MULTIPLE VEHICLES STUCK IN FLOODED ROADWAY
            ON MALAGA RD & MOUNTAIN VIEW RD.

&&

RILEY
Local storm report, Dec 31, 10:14 PM PST, 1 hour 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HANFORD CA
1014 PM PST SAT DEC 31 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     HEAVY SNOW       3 SSW LAKE ISABELLA     35.59N 118.50W
12/31/2016  M2.0 INCH        KERN               CA   PUBLIC

            2 INCHES OF SNOW IN BODFISH AS OF 10 PM AT
            2,675 FEET.

&&

RILEY
Local storm report, Dec 31, 10:55 PM PST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HANFORD CA
1055 PM PST SAT DEC 31 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 PM     HEAVY SNOW       KEENE                   35.22N 118.56W
12/31/2016  U0.0 INCH        KERN               CA   LAW ENFORCEMENT

            HIGHWAY 58 CLOSED FROM KEENE TO TEHACHAPI
            DUE TO SNOW.

&&

RILEY
Local storm report, Dec 31, 11:00 PM PST, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HANFORD CA
1100 PM PST SAT DEC 31 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0644 PM     HEAVY SNOW       2 SSW LEBEC             34.82N 118.88W
12/31/2016  U0.0 INCH        KERN               CA   LAW ENFORCEMENT

            CHP CLOSED INTERSTATE 5 ALONG THE GRAPEVINE
            FROM THE KERN/LOS ANGELES COUNTY LINE TO 25
            MILES SOUTH OF BAKERSFIELD DUE TO SNOW. CHP
            REOPENED I5 AT 10:30 PM.

&&

RILEY

Event by event

11 drought. Local standard time, as filed.

Drought, W Central S.J. Valley

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
W Central S.J. Valley forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, E Central S.J. Valley

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
E Central S.J. Valley forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Sw S.J. Valley

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
Sw S.J. Valley forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Se S.J. Valley

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
Se S.J. Valley forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, S Sierra Foothills

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
S Sierra Foothills forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Tulare Cty Foothills

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
Tulare Cty Foothills forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Kern Cty Mtns

When
January 1, 12:00 AM PST to January 31, 11:59 PM PST
Where
Kern Cty Mtns forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area. This left only a small area of Extreme Drought (D3) in the Kern County mountainous area.

Drought, S Sierra Mtns

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
S Sierra Mtns forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Tulare Cty Mtns

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
Tulare Cty Mtns forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Indian Wells Vly

When
January 1, 12:00 AM PST to January 24, 7:00 AM PST
Where
Indian Wells Vly forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area.

Drought, Se Kern Cty Desert

When
January 1, 12:00 AM PST to January 31, 11:59 PM PST
Where
Se Kern Cty Desert forecast zone
Reported by
Emergency Manager

Persistent drought conditions continued to be reported. However, wetting rainfall during the month did lessen the short term impacts across the area. This left only a small area of the desert locations under Extreme Drought (D3).

What these are

Drought
A drought reaching severe (D2) or worse on the US Drought Monitor, or with notable impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2017Every state in 2017This day in weather historyWarnings in California, January 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 673995, 673996, 673997, 673998, 673999, 674000, 674001, 674002, 674003, 674004, 674005.