Frost Advisory
Ends in 4 h 51 min
When
From 2 AM to 10 AM PDT Saturday.
Where
The Umpqua and Coquille valleys of Douglas and Coos counties, including Roseburg, Canyonville, Elkton, Drain, Camas Valley, Myrtle Point, and Coquille.
Issued for this forecast zone · National Weather Service Medford OR
What, impacts and precautionsHide details
What
Temperatures as low as 32 degrees will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: South Central Oregon Coast; Central Douglas County
See it on weather.gov (opens in a new tab)

Observed 4:50 AM PDT at KOTH

Gardiner, OR weather

Clear and 41°5°.

Mostly agree

Now 41°5°

Clear

Wind: Calm; Up to 5 mph8 km/h through 5 PM
Dew point: 39°4°; Comfortable · up to 47°8° by 5 PM
Humidity: 91%; Air 41°5°, dew point 39°4° · fog or dew likely
UV tomorrow: 2Low; Low all day (peak 2)
Air quality: 19Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.23 inHg1024 hPa; Falling slowly · −0.04 inHg−1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Fog until 9 AM
Above 50°10° today by 11 AM
Fog tonight 2–5 AM
Rain tomorrow from 11 AM (90%, 3.1 in78 mm)
Gusts to 30 mph48 km/h tomorrow 2–8 PM

This morningUp to 53°12° by 11 AM · Mostly cloudy
This afternoonUp to 61°16° by 2 PM · Mostly cloudy
TonightDown to 43°6° by 1 AM · Mostly cloudy
Tomorrow morningUp to 56°13° by 11 AM · Rain 11 AM–noon (40%)
Tomorrow afternoonNear 57°14° · Rain all afternoon (90%) · gusts to 30 mph48 km/h
Tomorrow nightDown to 48°9° by 4 AM · Rain all night (90%) · gusts to 26 mph42 km/h

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5a	Fog	41°5° (likely 35°2° to 43°6°)	41°5°	0%	2 mph3 km/h from ENE, gusts 6 mph10 km/h	91%	66%	0
Sat 6a	Fog	41°5° (likely 35°2° to 42°6°)	41°5°	0%	2 mph3 km/h from ENE, gusts 6 mph10 km/h	93%	76%	0
Sat 7a	Fog	40°4° (likely 35°2° to 42°6°)	40°4°	0%	2 mph3 km/h from ENE, gusts 6 mph10 km/h	93%	78%	0
Sat 8a	Fog	41°5° (likely 35°2° to 43°6°)	41°5°	0%	2 mph3 km/h from ENE, gusts 7 mph11 km/h	95%	80%	0
Sat 9a	Cloudy	44°7° (likely 39°4° to 46°8°)	44°7°	0%	2 mph3 km/h from ENE, gusts 9 mph15 km/h	88%	81%	0
Sat 10a	Cloudy	49°9° (likely 47°8° to 50°10°)	49°9°	0%	2 mph3 km/h from ENE, gusts 10 mph16 km/h	80%	81%	1
Sat 11a	Cloudy	53°12° (likely 53°12° to 55°13°)	53°12°	0%	2 mph3 km/h from NE, gusts 10 mph16 km/h	68%	79%	1
Sat 12p	Cloudy	57°14° (likely 55°13° to 59°15°)	57°14°	0%	2 mph3 km/h from NNE, gusts 8 mph13 km/h	59%	78%	2
Sat 1p	Mostly sunny	59°15° (likely 58°14° to 62°17°)	59°15°	0%	3 mph5 km/h from N, gusts 7 mph12 km/h	55%	61%	2
Sat 2p	Cloudy	61°16° (likely 59°15° to 62°17°)	61°16°	0%	3 mph5 km/h from NNW, gusts 9 mph15 km/h	51%	63%	2
Sat 3p	Cloudy	60°16° (likely 58°14° to 61°16°)	60°16°	0%	5 mph8 km/h from NNW, gusts 10 mph16 km/h	54%	80%	2
Sat 4p	Cloudy	61°16° (likely 56°13° to 61°16°)	61°16°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	58%	80%	1
Sat 5p	Cloudy	57°14° (likely 54°12° to 57°14°)	57°14°	0%	5 mph8 km/h from NNW, gusts 11 mph18 km/h	68%	80%	1
Sat 6p	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	3 mph5 km/h from NNW, gusts 8 mph13 km/h	79%	81%	0
Sat 7p	Cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	0%	1 mph2 km/h from NNW, gusts 8 mph12 km/h	86%	81%	0
Sat 8p	Cloudy	48°9° (likely 46°8° to 48°9°)	48°9°	0%	0 mph0 km/h, gusts 5 mph9 km/h	91%	79%	0
Sat 9p	Cloudy	47°8° (likely 44°7° to 47°8°)	47°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	96%	81%	0
Sat 10p	Cloudy	45°7° (likely 43°6° to 46°8°)	45°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	97%	82%	0
Sat 11p	Cloudy	45°7° (likely 42°6° to 46°8°)	45°7°	5%	0 mph0 km/h, gusts 4 mph6 km/h	97%	80%	0
Sun 12a	Cloudy	44°7° (likely 42°6° to 45°7°)	44°7°	5%	0 mph0 km/h, gusts 4 mph6 km/h	95%	81%	0
Sun 1a	Cloudy	43°6° (likely 41°5° to 45°7°)	43°6°	5%	0 mph0 km/h, gusts 4 mph7 km/h	94%	81%	0
Sun 2a	Fog	43°6° (likely 40°4° to 46°8°)	43°6°	5%	1 mph2 km/h from S, gusts 5 mph8 km/h	94%	81%	0
Sun 3a	Fog	43°6° (likely 40°4° to 47°8°)	43°6°	5%	1 mph2 km/h from SSE, gusts 6 mph9 km/h	94%	80%	0
Sun 4a	Fog	44°7° (likely 40°4° to 48°9°)	44°7°	5%	2 mph3 km/h from SSE, gusts 6 mph10 km/h	93%	79%	0
Sun 5a	Cloudy	44°7° (likely 40°4° to 49°9°)	42°6°	5%	3 mph5 km/h from SSE, gusts 9 mph15 km/h	90%	80%	0
Sun 6a	Cloudy	43°6° (likely 42°6° to 50°10°)	41°5°	10%	3 mph5 km/h from SSE, gusts 11 mph17 km/h	90%	88%	0
Sun 7a	Cloudy	45°7° (likely 42°6° to 51°11°)	44°7°	5%	3 mph5 km/h from SSE, gusts 12 mph19 km/h	90%	95%	0
Sun 8a	Cloudy	46°8° (likely 42°6° to 53°12°)	43°6°	5%	6 mph10 km/h from S, gusts 13 mph22 km/h	91%	99%	0
Sun 9a	Cloudy	48°9° (likely 45°7° to 54°12°)	45°7°	10%	6 mph10 km/h from S, gusts 17 mph27 km/h	92%	99%	0
Sun 10a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	30%	6 mph10 km/h from S, gusts 19 mph30 km/h	90%	99%	1
Sun 11a	Rain	56°13° (likely 53°12° to 56°13°)	56°13°	40%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 20 mph33 km/h	81%	100%	2
Sun 12p	Rain	58°14° (likely 53°12° to 58°14°)	58°14°	60%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 20 mph32 km/h	76%	100%	2
Sun 1p	Rain	59°15° (likely 53°12° to 59°15°)	59°15°	80%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 23 mph37 km/h	77%	100%	2
Sun 2p	Rain	60°16° (likely 52°11° to 60°16°)	60°16°	80%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 27 mph44 km/h	77%	99%	2
Sun 3p	Rain	58°14° (likely 52°11° to 58°14°)	58°14°	60%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 29 mph46 km/h	80%	93%	2
Sun 4p	Rain	58°14° (likely 52°11° to 58°14°)	58°14°	60%, 0.24 in6.1 mm	9 mph14 km/h from SSW, gusts 30 mph49 km/h	84%	87%	0
Sun 5p	Rain	55°13° (likely 51°11° to 55°13°)	55°13°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 26 mph41 km/h	92%	86%	0
Sun 6p	Rain	52°11° (likely 51°11° to 53°12°)	52°11°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 24 mph39 km/h	96%	84%	0
Sun 7p	Rain	51°11° (likely 51°11° to 52°11°)	51°11°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 26 mph42 km/h	97%	96%	0
Sun 8p	Drizzle	52°11° (likely 51°11° to 52°11°)	52°11°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 24 mph38 km/h	97%	100%	0
Sun 9p	Rain	51°11° (likely 51°11° to 52°11°)	51°11°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 24 mph39 km/h	98%	83%	0
Sun 10p	Rain	51°11° (likely 51°11° to 52°11°)	51°11°	90%, 0.13 in3.3 mm	9 mph14 km/h from SSW, gusts 22 mph36 km/h	99%	94%	0
Sun 11p	Rain	50°10° (likely 50°10° to 52°11°)	46°8°	90%, 0.14 in3.6 mm	10 mph16 km/h from S, gusts 22 mph36 km/h	100%	96%	0
Mon 12a	Rain	50°10° (likely 50°10° to 52°11°)	46°8°	90%, 0.14 in3.6 mm	10 mph16 km/h from S, gusts 17 mph27 km/h	100%	96%	0
Mon 1a	Drizzle	49°9° (likely 48°9° to 52°11°)	45°7°	90%, 0.14 in3.6 mm	10 mph16 km/h from S, gusts 16 mph26 km/h	100%	75%	0
Mon 2a	Rain	49°9° (likely 48°9° to 52°11°)	46°8°	90%, 0.14 in3.6 mm	7 mph11 km/h from S, gusts 18 mph29 km/h	100%	80%	0
Mon 3a	Drizzle	49°9° (likely 49°9° to 52°11°)	46°8°	90%, 0.14 in3.6 mm	7 mph11 km/h from S, gusts 17 mph28 km/h	100%	84%	0
Mon 4a	Showers	48°9° (likely 48°9° to 52°11°)	45°7°	90%, 0.14 in3.6 mm	7 mph11 km/h from S, gusts 18 mph29 km/h	100%	100%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Fog. High 62°17°, low 40°4°. Typical 58°14° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 43°6°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Mostly sunny. High near 62, with temperatures falling to around 57 in the afternoon. Northeast wind around 5 mph.
Tonight: Patchy fog. Partly cloudy, with a low around 40. East northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
34°1°–42°6°
Typical high / low
58°14° / 45°7°
Wind
8 mph14 km/h, gusts 16 mph26 km/h
UV peak
3
Tomorrow, Oct 25. Rain. High 60°16°, low 47°8°. Typical 58°14° / 45°7°. Rain 0.55 in14 mm, 90% chance. Mostly agree.
1. Morning
  6 AM–noon
  Rain, 46°8°
  40% chance · 0.24 in6.1 mm
2. Afternoon
  noon–6 PM
  Rain, 60°16°
  90% chance · 1.3 in34 mm
3. Evening
  6 PM–midnight
  Rain, 52°11°
  90% chance · 0.79 in20 mm
4. Overnight
  midnight–6 AM
  Rain, 48°9°
  90% chance · 0.75 in19 mm
Official NWS forecast
Day: Patchy fog before 10am, then rain. Mostly cloudy, with a high near 60. South wind 3 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Night: Rain and patchy fog. Cloudy, with a low around 47. South southwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–60°16°
Low, likely
39°4°–47°8°
Typical high / low
58°14° / 45°7°
Wind
15 mph24 km/h, gusts 39 mph62 km/h
UV peak
2
Monday, Oct 26. Rain. High 58°14°, low 45°7°. Typical 57°14° / 44°7°. Rain 0.72 in18 mm, 90% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Showers, 50°10°
  90% chance · 0.37 in9.5 mm
2. Afternoon
  noon–6 PM
  Showers, 55°13°
  90% chance · 0.11 in2.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 51°11°
  70% chance · 0.03 in0.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 50°10°
  50% chance · 0.02 in0.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and patchy fog. Mostly cloudy, with a high near 58. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: A chance of rain. Mostly cloudy, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
54°12°–58°14°
Low, likely
45°7°–51°11°
Typical high / low
57°14° / 44°7°
Wind
12 mph20 km/h, gusts 28 mph44 km/h
UV peak
3
Tuesday, Oct 27. Rain. High 60°16°, low 43°6°. Typical 57°14° / 44°7°. Rain 0.14 in3.6 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 49°10°
  40% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 54°12°
  40% chance · 0.09 in2.2 mm
3. Evening
  6 PM–midnight
  Drizzle, 47°8°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain before 5pm. Mostly cloudy, with a high near 60.
Night: A slight chance of rain after 11pm. Mostly cloudy, with a low around 43.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
54°12°–60°16°
Low, likely
43°6°–46°8°
Typical high / low
57°14° / 44°7°
Wind
7 mph12 km/h, gusts 23 mph37 km/h
UV peak
3
Wednesday, Oct 28. Rain. High 60°16°, low 43°6°. Typical 57°14° / 44°7°. Rain 0.12 in3 mm, 40% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  40% chance · 0.05 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 53°12°
  50% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 47°8°
  40% chance · 0.03 in0.8 mm
4. Overnight
  midnight–6 AM
  Drizzle, 43°6°
  50% chance · 0.07 in1.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 60.
Night: A chance of rain. Mostly cloudy, with a low around 43.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
53°12°–60°16°
Low, likely
37°3°–46°8°
Typical high / low
57°14° / 44°7°
Wind
9 mph15 km/h, gusts 27 mph44 km/h
UV peak
2
Thursday, Oct 29. Rain. High 60°16°, low 41°5°. Typical 56°13° / 44°7°. Rain 0.31 in7.9 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 42°6°
  50% chance · 0.08 in2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 52°11°
  50% chance · 0.05 in1.2 mm
3. Evening
  6 PM–midnight
  Drizzle, 46°8°
  40% chance · 0.12 in3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 44°7°
  20% chance · 0.05 in1.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 60.
Night: A slight chance of rain before 5am. Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
50°10°–60°16°
Low, likely
38°3°–45°7°
Typical high / low
56°13° / 44°7°
Wind
9 mph15 km/h, gusts 20 mph31 km/h
UV peak
3
Friday, Oct 30. Drizzle. High 61°16°, low 42°6°. Typical 56°13° / 44°7°. Rain 0.18 in4.6 mm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 44°6°
  20% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 51°11°
  30% chance · 0.08 in2 mm
3. Evening
  6 PM–midnight
  Clear, 44°7°
  30% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Partly cloudy, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–61°16°
Low, likely
39°4°–44°7°
Typical high / low
56°13° / 44°7°
Wind
10 mph16 km/h, gusts 22 mph35 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 53°12°, low 39°4°. Typical 56°13° / 44°7°. Rain 0.11 in2.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 53°11°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°5°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
46°8°–59°15°
Low, likely
36°2°–43°6°
Typical high / low
56°13° / 44°7°
Wind
7 mph11 km/h, gusts 12 mph19 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 57°14°, low 41°5°. Typical 56°13° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–66°19°
Low, likely
35°2°–48°9°
Typical high / low
56°13° / 44°7°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 57°14°, low 43°6°. Typical 55°13° / 44°7°. Rain 0.18 in4.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  20% chance · 0.05 in1.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  30% chance · 0.07 in1.7 mm
3. Evening
  6 PM–midnight
  Cloudy, 45°7°
  30% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
49°9°–66°19°
Low, likely
41°5°–45°7°
Typical high / low
55°13° / 44°7°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 40°.
Tomorrow
89% chance of rain, high 60°, low 47°.
Monday
85% chance of rain, high 58°, low 45°.
Rest of week
Highs 53–61°; chance of precipitation on Wednesday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MFR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Umpqua River at Reedsport

2.0 mi

Below flood stage

Level: 8.8 ft

Forecast peak 14.0 ft Tue 2 PM

Reading from Sat 3:30 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 71% less heating than a typical week.

This week 29Typical 101

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 16
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 3 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Today, 2:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

Honeyman State Park · official normals 1991–2020 · records 1971–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° warmer than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Gardiner weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 36 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
Golden hour: 5:38–6:36 PM; Morning 7:24–8:22 AM
Blue hour: 6:36–6:47 PM; Morning 7:12–7:24 AM; first light 7:12 AM

Stars tonight? Poor

Clouds most of the night (about 73% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:01 AM · rises 5:19 PM
Full moon: Oct 25
New moon: Nov 8

Looking west from Gardiner. The highest point on the skyline is about 3,400 ft, 21 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Frost Advisory