Freeze Warning 6, NWS Medford, OR

582 
WWUS76 KMFR 082140
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
240 PM PDT Thu Apr 8 2021

ORZ024-026-091600-
/O.NEW.KMFR.FZ.A.0003.210411T0900Z-210411T1600Z/
/O.CON.KMFR.FZ.W.0006.210409T0900Z-210409T1600Z/
Eastern Curry County and Josephine County-Jackson County-
Including the cities of Grants Pass, Cave Junction, Medford, 
and Ashland
240 PM PDT Thu Apr 8 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM PDT
FRIDAY...
...FREEZE WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY
MORNING...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 25 expected. For the Freeze Watch, sub-freezing temperatures
  as low as 23 possible.

* WHERE...Valleys of Josephine and Jackson Counties, including
  Medford, Grants Pass, Ashland, Talent, Phoenix, Eagle Point,
  Shady Cove, Williams, Provolt, Merlin, Selma, Cave Junction, and
  O'Brien.

* WHEN...For the Freeze Warning, from 2 AM to 9 AM PDT Friday. 
  For the Freeze Watch, from late Saturday night through Sunday 
  morning.

* IMPACTS...Sub-freezing conditions could kill crops and other
  sensitive vegetation.

* ADDITIONAL DETAILS...This is a cold air mass, but there may be
  enough of an inversion tonight for wind machines to be effective
  in mixing warmer air aloft to the surface. Any inversion on
  Saturday night will be weaker.

* 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.

&&

$$

ORZ023-091600-
/O.NEW.KMFR.FZ.A.0003.210411T0900Z-210411T1600Z/
/O.CON.KMFR.FZ.W.0006.210409T0900Z-210409T1600Z/
Central Douglas County-
Including the cities of Drain, Elkton, Roseburg, Sutherlin, 
Green, Myrtle Creek, Canyonville, and Glendale
240 PM PDT Thu Apr 8 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM PDT
FRIDAY...
...FREEZE WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY
MORNING...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 29 expected. For the Freeze Watch, sub-freezing temperatures
  as low as 27 possible.

* WHERE...Valleys of central Douglas County, including the cities
  of Roseburg, Sutherlin, Drain, Elkton, Green, Myrtle Creek, 
  Canyonville, and Glendale.

* WHEN...For the Freeze Warning, from 2 AM to 9 AM PDT Friday. 
  For the Freeze Watch, from late Saturday night through Sunday 
  morning.

* IMPACTS...Sub-freezing conditions could kill crops and other
  sensitive vegetation.

* ADDITIONAL DETAILS...This is a cold air mass, but there may be
  enough of an inversion tonight for wind machines to be effective
  in mixing warmer air aloft to the surface. Any inversion on
  Saturday night will be weaker.

* 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.

&&

$$

ORZ021-022-091600-
/O.CON.KMFR.FR.Y.0006.210409T0900Z-210409T1600Z/
South Central Oregon Coast-Curry County Coast-
Including the cities of Coos Bay, North Bend, Reedsport, Bandon, 
and Coquille
240 PM PDT Thu Apr 8 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM PDT
FRIDAY...

* WHAT...Low temperatures of 33 to 36 degrees will result in 
  frost formation.

* WHERE...South Central Oregon Coast and Curry County Coast, 
  including Coos Bay, North Bend, Reedsport, Bandon, Coquille, 
  and Myrtle Point.

* WHEN...From 2 AM to 9 AM PDT Friday.

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

* 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.

&&

$$

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

690 
WWUS76 KMFR 091543
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
843 AM PDT Fri Apr 9 2021

ORZ024-026-092345-
/O.EXP.KMFR.FZ.W.0006.000000T0000Z-210409T1600Z/
/O.CON.KMFR.FZ.A.0003.210411T0900Z-210411T1600Z/
Eastern Curry County and Josephine County-Jackson County-
Including the cities of Grants Pass, Cave Junction, Medford, 
and Ashland
843 AM PDT Fri Apr 9 2021

...FREEZE WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH SUNDAY MORNING...
...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 21 possible.

* WHERE...Valleys of Josephine and Jackson Counties, including 
  Medford, Grants Pass, Ashland, Talent, Phoenix, Eagle Point, 
  Shady Cove, Williams, Provolt, Merlin, Selma, Cave Junction, 
  and O'Brien.

* WHEN...Late Saturday night through Sunday morning.

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

* 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.

&&

$$

ORZ023-092345-
/O.EXP.KMFR.FZ.W.0006.000000T0000Z-210409T1600Z/
/O.CON.KMFR.FZ.A.0003.210411T0900Z-210411T1600Z/
Central Douglas County-
Including the cities of Drain, Elkton, Roseburg, Sutherlin, 
Green, Myrtle Creek, Canyonville, and Glendale
843 AM PDT Fri Apr 9 2021

...FREEZE WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH SUNDAY MORNING...
...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 26 possible.

* WHERE...Valleys of central Douglas County, including the 
  cities of Roseburg, Sutherlin, Drain, Elkton, Green, Myrtle 
  Creek, Canyonville, and Glendale.

* WHEN...Late Saturday night through Sunday morning.

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

* 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.

&&

$$

ORZ021-022-091645-
/O.EXP.KMFR.FR.Y.0006.000000T0000Z-210409T1600Z/
South Central Oregon Coast-Curry County Coast-
Including the cities of Coos Bay, North Bend, Reedsport, Bandon, 
and Coquille
843 AM PDT Fri Apr 9 2021

...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING...

Temperatures will continue rise above critical values this
morning. However, another round of frost potential will be
possible late Saturday night into Sunday morning. 

$$

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

Area Forecast Discussion
National Weather Service Medford OR
228 AM PDT Thu Apr 8 2021

.DISCUSSION...An upper air disturbance moving through Washington
this morning will move into Idaho and Montana this afternoon. Some
light showers will accompany a weakening cold front along the
coast and points eastward to the Cascades this morning, but most
should stay to the north of Medford/Ashland. Coverage of showers
will diminish this afternoon. Overall, high temperatures where
it's cloudiest today (coast/Umpqua Basin) will be a few degrees
below normal, but sunnier areas will have highs close to or even a
few above normal (NorCal and east side). Breezy conditions are
expected east of the Cascades today with some N-NW breezes also
picking up along the coast and west of the Cascades this
afternoon.

Tonight, high pressure will build in and surface winds will
subside. With clearing expected, temperatures are expected to
drop to near or below freezing in many areas west of the Cascades.
We've issued a freeze watch for the west side valleys, which can
be viewed at NPWMFR. Lows could be in the low to mid 30s along
the coast, so frost is possible there as well.

Sunny, dry weather is expected on Friday, then another almost
identical upper trough and weak surface cold front (compared to
the one moving through today) will traverse the area Friday night
into Saturday. Once again, a few light showers are possible at the
coast, in the Umpqua Valley and over to the Cascades, but that's
about it. Dry, breezy weather can be expected elsewhere.

High pressure will build in Saturday night into Sunday morning with
another round of frost/freezing conditions possible for many
areas west of the Cascades.

A warming trend will ensue on Sunday afternoon and last through
Tuesday or Wednesday. Another upper trough could slide through
from the north on Tuesday. Ensemble members suggest there's about
a 20 percent of a pronounced upper trough moving through from
north to south Tuesday morning, and this would bring gusty north
winds (gusting to 30 mph) for at least areas east of the Cascades
and coastal waters as well. -Spilde

&&

.AVIATION...For the 08/00Z TAF Cycle...An approaching front has
brought and maintains low clouds from the Umpqua Basin westward to
the coast. Mountain obscuration is occurring and will continue
through the overnight hours. Some brief improvement to VFR ceilings
may occur this afternoon from the coast to Roseburg, but confidence
is moderate on this. We have high confidence that if ceilings lift
to VFR briefly, they will return to MVFR this evening as some
showers move in along the front. Elsewhere...VFR conditions will
continue and breezy conditions are expected this afternoon.
Keene/Sven

&&

.MARINE...Updated 200 AM PDT Thursday, 8 Apr 2021...
Relatively light winds and seas will continue into this afternoon as
a weak cold front moves through the area. North winds and seas are
then expected to build late Thursday afternoon and evening, reaching
advisory levels for portions of the waters from Port Orford south
through late Friday morning, then from Cape Sebastian south Friday
afternoon. Friday evening through Saturday morning another
relatively light period of winds and seas is expected as another
weak front moves through. This is then likely to be follow by a
longer and stronger north wind event with steep to very steep seas
late Saturday into early next week. Winds may rise to gales for
portions of the waters south of Cape Blanco on Sunday and continue
into Monday. Gusty, north winds and elevated seas may continue into
Tuesday. -CC

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Freeze Watch from late tonight through Friday morning for
     ORZ023.
     Freeze Watch from late tonight through Friday morning for
     ORZ024-026.

CA...None.

Pacific Coastal Waters...Small Craft Advisory from 5 PM this
     afternoon to 5 PM PDT Friday for PZZ356-376.

MAS/CC/SBN