Oregon, 2017

Frost and Freeze in Oregon, September 16, 2017

September 16, 2017 · NWS MFR · 2 events in 2 counties and zones

The second significant front of the fall season brought a cooler air mass to the area. This, combined with clearing skies, brought sub-freezing temperatures to some parts of south central Oregon.

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

Open the live radar over this ground

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.

The second significant front of the fall season brought a cooler air mass to the area. This, combined with clearing skies, brought sub-freezing temperatures to some parts of south central Oregon.

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 Sep 15, 7:16 PM PST, 5 hours 44 minutes earlier.

Area forecast discussion, Sep 15, 7:16 PM PST, 5 hours 44 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

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

Frost/Freeze, Northern & Eastern Klamath County & Western Lake County

When
September 16, 1:00 AM PST to 7:00 AM PST
Where
Northern & Eastern Klamath County & Western Lake County forecast zone
Reported by
COOP Observer
Coordinates
42.740, -121.018 (the zone’s center; the record gives no point)

The only reported low temperature in this zone was 29 at Chemult.

Frost/Freeze, Central & Eastern Lake County

When
September 16, 1:00 AM PST to 7:00 AM PST
Where
Central & Eastern Lake County forecast zone
Reported by
Official NWS Observations
Coordinates
42.793, -120.387 (the zone’s center; the record gives no point)

Reported low temperatures in this zone ranged from 31 to 41 degrees.

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 Oregon in 2017Every state in 2017This day in weather historyWarnings in Oregon, September 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 2026-09-30. Each event’s entry at NCEI: 717381, 717668.