California, 2023

Winter Weather in California, March 19 to 20, 2023

March 19 to 20, 2023 · NWS HNX · 6 events in 6 counties and zones

An upper trough pushed into central California and moved through the region on March 19. 5 inches of liquid precipitation to the Sierra Nevada, a quarter inch to an inch of rain to the Sierra foothills and a tenth to quarter inch of rain to much of the San Joaquin Valley and West Side Hills.

Where it happened

Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
6

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.

An upper trough pushed into central California and moved through the region on March 19. This system brought 0.75 to 1.5 inches of liquid precipitation to the Sierra Nevada, a quarter inch to an inch of rain to the Sierra foothills and a tenth to quarter inch of rain to much of the San Joaquin Valley and West Side Hills. This system cam in warmer than anticipated and the snow level ranged from 6500 to 7000 feet with this system. Several higher elevation SNOTELS in the Sierra Nevada picked up an estimated 8 to 16 inches of new snowfall.

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 Mar 19, 12:43 AM PST, 7 hours 17 minutes earlier.

Area forecast discussion, Mar 19, 12:43 AM PST, 7 hours 17 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

6 winter weather. Local standard time, as filed.

Winter Weather, Yosemite Np Outside of the Valley

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
Yosemite Np Outside of the Valley forecast zone
Reported by
SNOTEL
Coordinates
37.609, -119.874 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 5 to 10 inches of new snowfall.

Winter Weather, Upper San Joaquin River

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
Upper San Joaquin River forecast zone
Reported by
SNOTEL
Coordinates
36.988, -119.706 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 8 to 16 inches of new snowfall.

Winter Weather, Kaiser to Rodgers Ridge

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
Kaiser to Rodgers Ridge forecast zone
Reported by
SNOTEL
Coordinates
36.758, -119.649 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 5 to 10 inches of new snowfall.

Winter Weather, Kings Canyon Np

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
Kings Canyon Np forecast zone
Reported by
SNOTEL
Coordinates
36.489, -119.224 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 8 to 16 inches of new snowfall.

Winter Weather, Sequoia Np

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
Sequoia Np forecast zone
Reported by
SNOTEL
Coordinates
36.220, -118.800 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 8 to 16 inches of new snowfall.

Winter Weather, South End of the Upper Sierra

When
March 19, 8:00 AM PST to March 20, 2:00 AM PST
Where
South End of the Upper Sierra forecast zone
Reported by
SNOTEL
Coordinates
35.782, -118.765 (the zone’s center; the record gives no point)

Several SNOTEL reports of an estimated 5 to 10 inches of new snowfall.

What these are

Winter Weather
Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.

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

The same day elsewhere

More

Every storm in California in 2023Every state in 2023This day in weather historyWarnings in California, March 2023

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 2026-10-01. Each event’s entry at NCEI: 1077680, 1077681, 1077682, 1077683, 1077684, 1077685.