Frost Advisory 9, NWS Medford, OR

Issued

Sep 28, 2021, 3:43 AM PDT (10:43 UTC)

In effect from

Sep 29, 2021, 2:00 AM PDT

Expired

Sep 29, 2021, 10:00 AM PDT

In force

8 hr

Issued by

NWS Medford, OR

Counties Siskiyou County, CA, Curry County, OR, Jackson County, OR, Josephine County, OR

The Medford radar (KMAX), 47 km from the middle of the area, began a volume at 10:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

345 
WWUS76 KMFR 281043
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
343 AM PDT Tue Sep 28 2021

CAZ082-282200-
/O.NEW.KMFR.FR.Y.0009.210929T0900Z-210929T1700Z/
/O.EXA.KMFR.FZ.W.0010.210929T0900Z-210929T1700Z/
South Central Siskiyou County-
Including the cities of McCloud and Mount Shasta
343 AM PDT Tue Sep 28 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM PDT WEDNESDAY...
...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM PDT WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 26 expected. For the Frost Advisory, temperatures 32 to 36
  degrees will allow for significant frost formation.

* WHERE...
  - For the Freeze Warning: Areas in and around McCloud.
  - For the Frost Advisory: Mount Shasta City to South Weed.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost and freezing conditions will kill crops, other
  sensitive vegetation, and could possibly damage unprotected
  outdoor irrigation equipment.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ084-085-ORZ029>031-282200-
/O.EXT.KMFR.FZ.W.0010.210929T0900Z-210929T1700Z/
Northeast Siskiyou and Northwest Modoc Counties-Modoc County-
Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Dorris, Newell, Macdoel, Tulelake, Adin, 
Alturas, Canby, Likely, Lookout, Altamont, Beatty, Bly, Chemult, 
Crescent, Gilchrist, Sprague River, Lakeview, and Valley Falls
343 AM PDT Tue Sep 28 2021

...FREEZE WARNING NOW IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...

* WHAT...Sub-freezing temperatures in the mid to upper teens in
  the usually colder valleys of northern Klamath County, in the
  20s at most locations, and in the lower 30s at other locations.

* WHERE...Most of Modoc and northeast Siskiyou counties in
  northern California, and Klamath and Lake counties in Oregon.
  This includes the communities of Klamath Falls, Chiloquin,
  Sprague River, Bly, Bonanza, Silver Lake, Christmas Valley, 
  Lakeview, Paisley, Tulelake, Dorris, and Alturas.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost and freezing conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing and irrigation equipment.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ080-282200-
/O.NEW.KMFR.FR.Y.0009.210929T0900Z-210929T1700Z/
/O.CON.KMFR.FZ.W.0010.210929T0900Z-210929T1700Z/
Western Siskiyou County-
Including the cities of Callahan, Etna, Fort Jones, and Greenview
343 AM PDT Tue Sep 28 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM PDT WEDNESDAY...
...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 31 degrees expected. For the Frost Advisory, temperatures 
  from 32 to 36 degrees will result in frost formation.

* WHERE...  
  - For the Freeze Warning: Etna and Greenview in the Scott Valley.
  - For the Frost Advisory: Fort Jones.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  irrigation.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ081-ORZ024-026-282200-
/O.NEW.KMFR.FR.Y.0009.210929T0900Z-210929T1700Z/
Central Siskiyou County-Eastern Curry County and Josephine County-
Jackson County-
Including the city of Weed
343 AM PDT Tue Sep 28 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM PDT WEDNESDAY...

* WHAT...Temperatures mostly between 32 and 36 degrees will allow
  for significant frost formation in the advisory area. Localized
  freezing conditions are possible.

* WHERE...In California, Weed and areas near the community of
  Klamath River in Central Siskiyou County. In Oregon, portions of
  Josephine County and Jackson County, primarily the Applegate
  Valley including Williams, Provolt, and Applegate. Areas in and
  around the town of Prospect, where freezing conditions are also
  possible.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost could damage or kill sensitive outdoor 
  vegetation if left uncovered.

* ADDITIONAL DETAILS...Patchy frost will be possible in some 
  locations where low temperatures are between 36 and 39F. This 
  advisory is for locations where lows are likely to be 36 degrees
  or lower.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
BTL
Visit us at https://www.weather.gov/Medford

655 
WWUS76 KMFR 282037
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
137 PM PDT Tue Sep 28 2021

CAZ080-082-291700-
/O.CON.KMFR.FZ.W.0010.210929T0900Z-210929T1700Z/
/O.CON.KMFR.FR.Y.0009.210929T0900Z-210929T1700Z/
Western Siskiyou County-South Central Siskiyou County-
Including the cities of Callahan, Etna, Fort Jones, Greenview, 
McCloud, and Mount Shasta
137 PM PDT Tue Sep 28 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...
...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 26 degrees expected. For the Frost Advisory, 
  temperatures from 32 to 36 degrees will result in frost 
  formation.

* WHERE...  
  -For the Freeze Warning: Areas in and around McCloud, but also 
   Etna and Greenview in the Scott Valley.  
  -For the Frost Advisory: Mount Shasta City to South Weed and 
   also Fort Jones.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost and freezing conditions will kill crops, other 
  sensitive vegetation, and possibly damage unprotected outdoor 
  irrigation equipment.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ084-085-ORZ029>031-291700-
/O.CON.KMFR.FZ.W.0010.210929T0900Z-210929T1700Z/
Northeast Siskiyou and Northwest Modoc Counties-Modoc County-
Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Dorris, Newell, Macdoel, Tulelake, Adin, 
Alturas, Canby, Likely, Lookout, Altamont, Beatty, Bly, Chemult, 
Crescent, Gilchrist, Sprague River, Lakeview, and Valley Falls
137 PM PDT Tue Sep 28 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...

* WHAT...Sub-freezing temperatures in the mid to upper teens in 
  the usually colder valleys of northern Klamath County, in the 
  20s at most locations, and in the lower 30s at other locations.

* WHERE...Most of Modoc and northeast Siskiyou counties in 
  northern California, and Klamath and Lake counties in Oregon. 
  This includes the communities of Klamath Falls, Chiloquin, 
  Sprague River, Bly, Bonanza, Silver Lake, Christmas Valley, 
  Lakeview, Paisley, Tulelake, Dorris, and Alturas.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost and freezing conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing and irrigation equipment.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ081-ORZ024-026-291700-
/O.CON.KMFR.FR.Y.0009.210929T0900Z-210929T1700Z/
Central Siskiyou County-Eastern Curry County and Josephine County-
Jackson County-
Including the city of Weed
137 PM PDT Tue Sep 28 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM PDT
WEDNESDAY...

* WHAT...Temperatures mostly between 32 and 36 degrees will 
  allow for significant frost formation in the advisory area. 
  Localized freezing conditions are possible.

* WHERE...In California, Weed and areas near the community of 
  Klamath River in Central Siskiyou County. In Oregon, portions 
  of Josephine County and Jackson County, primarily the 
  Applegate Valley including Williams, Provolt, and Applegate. 
  Areas in and around the town of Prospect, where freezing 
  conditions are also possible.

* WHEN...From 2 AM to 10 AM PDT Wednesday.

* IMPACTS...Frost could damage or kill sensitive outdoor 
  vegetation if left uncovered.

* ADDITIONAL DETAILS...Patchy frost will be possible in some 
  locations where low temperatures are between 36 and 39F. This 
  advisory is for locations where lows are likely to be 36 
  degrees or lower.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

MAS

Visit us at https://www.weather.gov/Medford

792 
WWUS76 KMFR 291649
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
949 AM PDT Wed Sep 29 2021

CAZ080-082-291800-
/O.EXP.KMFR.FZ.W.0010.000000T0000Z-210929T1700Z/
/O.EXP.KMFR.FR.Y.0009.000000T0000Z-210929T1700Z/
Western Siskiyou County-South Central Siskiyou County-
Including the cities of Callahan, Etna, Fort Jones, Greenview, 
McCloud, and Mount Shasta
949 AM PDT Wed Sep 29 2021

...FREEZE WARNING WILL EXPIRE AT 10 AM PDT THIS MORNING...
...FROST ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING...

Temperatures are now above freezing and both the warning and
advisory will be allowed to expire.

$$

CAZ084-085-ORZ029>031-291800-
/O.EXP.KMFR.FZ.W.0010.000000T0000Z-210929T1700Z/
Northeast Siskiyou and Northwest Modoc Counties-Modoc County-
Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Dorris, Newell, Macdoel, Tulelake, Adin, 
Alturas, Canby, Likely, Lookout, Altamont, Beatty, Bly, Chemult, 
Crescent, Gilchrist, Sprague River, Lakeview, and Valley Falls
949 AM PDT Wed Sep 29 2021

...FREEZE WARNING WILL EXPIRE AT 10 AM PDT THIS MORNING...

Temperatures are now above freezing and the warning will be 
allowed to expire.

$$

CAZ081-ORZ024-026-291800-
/O.EXP.KMFR.FR.Y.0009.000000T0000Z-210929T1700Z/
Central Siskiyou County-Eastern Curry County and Josephine County-
Jackson County-
Including the city of Weed
949 AM PDT Wed Sep 29 2021

...FROST ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING...

Temperatures are now above freezing and the advisory will be 
allowed to expire.

$$

Visit us at https://www.weather.gov/Medford

Frost Advisories in Oregon, 2021Frost Advisories in California, 2021Every frost advisory in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.