California, 2012

Heavy Snow in California, April 11 to 12, 2012

April 11 to 12, 2012 · NWS MFR · 3 events in 3 counties and zones

A wet and cold late season storm brought heavy snow to portions of western and central Siskiyou county.

Where it happened

Every event with a place to put it; 3 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
3

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 MFR wrote it up.

A wet and cold late season storm brought heavy snow to portions of western and central Siskiyou county.

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 Medford, OR wrote its last area forecast discussion before the first event at Apr 11, 3:14 PM PST, 1 hour 46 minutes earlier.

Area forecast discussion, Apr 11, 3:14 PM PST, 1 hour 46 minutes before
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Hazardous weather outlook, Apr 11, 3:01 PM PST, 1 hour 59 minutes before
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In the hours before

Local storm report, Apr 11, 12:42 PM PST, 4 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
142 PM PDT WED APR 11 2012

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

0142 PM     HAIL             3 NE APPLEGATE          42.29N 123.13W
04/11/2012  E0.25 INCH       JACKSON            OR   TRAINED SPOTTER

            IN HEAVY SHOWERS

&&

STOCKTON
Local storm report, Apr 11, 2:58 PM PST, 2 hours 2 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

3 heavy snow. Local standard time, as filed.

Heavy Snow, North Central & Southeast Siskiyou County

When
April 11, 5:00 PM PST to April 12, 5:00 AM PST
Where
North Central & Southeast Siskiyou County forecast zone
Reported by
Trained Spotter
Coordinates
41.593, -122.540 (the zone’s center; the record gives no point)

A spotter N Tennant reported 10.0 inches of snow in 12 hours ending at 12/0500 PST.

Heavy Snow, South Central Siskiyou County

When
April 11, 5:00 PM PST to April 12, 5:00 AM PST
Where
South Central Siskiyou County forecast zone
Reported by
Trained Spotter
Coordinates
41.593, -122.540 (the zone’s center; the record gives no point)

A spotter N Tennant in adjacent zone CAZ083 reported 10.0 inches of snow in 12 hours ending at 12/0500 PST. Given this report along with heavier rain amounts at lower elevations in CAZ082, it is assumed that the warning verified in CAZ082 above populated areas.

Heavy Snow, Western Siskiyou County

When
April 11, 5:00 PM PST to April 12, 5:00 AM PST
Where
Western Siskiyou County forecast zone
Reported by
Trained Spotter
Coordinates
41.593, -122.540 (the zone’s center; the record gives no point)

A spotter N Tennant in zone CAZ083 reported 10.0 inches of snow in 12 hours ending at 12/0500 PST. Given this report along with heavier rain amounts at lower elevations in CAZ080, it is assumed that the warning verified in CAZ080 above populated areas.

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

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

The same day elsewhere

More

Every storm in California in 2012Every state in 2012This day in weather historyWarnings in California, April 2012

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: 365408, 365409, 365410.