California, 2003

Frost and Freeze in California, September 17 to 18, 2003

September 17 to 18, 2003 · NWS MFR · 2 events in 2 counties and zones

A Frost Warning was issued for the above zones the night of 09/17-18. so a killing frost likely occurred this night.

Where it happened

Every event with a place to put it; 2 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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 Frost Warning was issued for the above zones the night of 09/17-18. Reported low temperatures ranged from 24 to 37...so a killing frost likely occurred this night.

The radar

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

Open the radar archive at this moment

Event by event

2 frost/freeze. Local standard time, as filed.

Frost/Freeze, Northeast Siskiyou and Northwest Modoc Counties

When
September 17, 2:45 PM PST to September 18, 8:00 AM PST
Where
Northeast Siskiyou and Northwest Modoc Counties forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
41.592, -121.632 (the zone’s center; the record gives no point)

See below.

Frost/Freeze, Modoc County

When
September 17, 2:45 PM PST to September 18, 8:00 AM PST
Where
Modoc County forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
41.590, -120.725 (the zone’s center; the record gives no point)

See below.

What these are

Frost/Freeze
Frost or temperatures at or below freezing during the growing season, usually filed for crop damage.

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

The same day elsewhere

More

Every storm in California in 2003Every state in 2003This day in weather historyWarnings in California, September 2003

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: 5375286, 5375287.