California, 2007

Heavy Snow in California, April 21 to 22, 2007

April 21 to 22, 2007 · NWS REV · 8 events in 3 counties and zones

A winter storm brought over two feet of snow to the higher elevations of the central Sierra, with rain and small hail occurring in western Nevada.

Where it happened

Every event with a place to put it; 8 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
8

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 REV wrote it up.

A winter storm brought over two feet of snow to the higher elevations of the central Sierra, with rain and small hail occurring in western Nevada.

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 Reno, NV wrote its last area forecast discussion before the first event at Apr 21, 1:15 PM PST, 8 hours 45 minutes earlier.

Area forecast discussion, Apr 21, 1:15 PM PST, 8 hours 45 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The radar

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

Open the radar archive at this moment

Event by event

8 heavy snow. Local standard time, as filed.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
Public
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

Alpine Meadows Ski Resort reported a total of 28 inches of snowfall at an elevation of 8600 feet, with 22 inches of snow at 7000 feet.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
Public
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

Squaw Valley Ski Resort reported 20 inches of snowfall at an elevation of 8200 feet, with 12 inches at 6200 feet.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
Public
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

Tahoe-Donner ski area reported a total of 11 inches of snowfall at an elevation of 6700 feet.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
Trained Spotter
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

A trained spotter 5 miles north of Truckee near Hobart Mills reported a total of 9 inches of snowfall at an elevation of 6100 feet.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
COOP Observer
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

The Tahoe City Coast Guard Station reported a total of 5 inches of snowfall.

Heavy Snow, Greater Lake Tahoe Area

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Greater Lake Tahoe Area forecast zone
Reported by
Trained Spotter
Coordinates
38.935, -120.458 (the zone’s center; the record gives no point)

A trained spotter 5 miles WSW of Homewood reported a total of 12 inches of snowfall at an elevation of 6350 feet.

Heavy Snow, Lassen/Eastern Plumas/Eastern Sierra

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Lassen/Eastern Plumas/Eastern Sierra forecast zone
Reported by
Trained Spotter
Coordinates
40.086, -120.650 (the zone’s center; the record gives no point)

A trained spotter reported a total of 14 inches of snowfall at Yuba Pass.

Heavy Snow, Mono

When
April 21, 10:00 PM PST to April 22, 6:00 AM PST
Where
Mono forecast zone
Reported by
Trained Spotter
Coordinates
37.939, -118.887 (the zone’s center; the record gives no point)

A trained spotter reported a total of 12 inches of snowfall at the top of Mammoth Mountain, with 9 inches of snow at mid-mountain.

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 2007Every state in 2007This day in weather historyWarnings in California, April 2007

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: 22031, 22032, 22034, 22039, 22040, 22041, 22042, 22044.