Alert archive / Oregon / Wind Advisories in 2021

Wind Advisory 18, NWS Medford, OR

May 6, 2021Klamath County, Lake County, Oregon

NWS Medford, OR issued this wind advisory at May 6, 2021, 2:43 AM PDT for Klamath County, Lake County, Oregon. It took effect at May 6, 2021, 11:00 AM PDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
May 6, 2021, 2:43 AM PDT (09:43 UTC)
In effect from
May 6, 2021, 11:00 AM PDT
Expired
May 6, 2021, 7:35 PM PDT
In force
9 hr
Issued by
NWS Medford, OR

Counties Klamath County, OR, Lake County, OR

The radar

The Medford radar (KMAX), 158 km from the middle of the area, began a volume at 09:49 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.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 00:00Z, 9.7 hours before the alert went out and 152 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 00:00Z on 2021-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2021-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3550 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

079 
WWUS76 KMFR 060943
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
243 AM PDT Thu May 6 2021

ORZ030-031-061745-
/O.NEW.KMFR.WI.Y.0018.210506T1800Z-210507T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Lakeview and Valley Falls
243 AM PDT Thu May 6 2021

...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 11 PM PDT
THIS EVENING...

* WHAT...Southwest winds 30 to 35 mph with gusts up to 55 mph 
  expected.

* WHERE...Portions of Lake County and eastern Klamath County, 
  including the communities of Lakeview, Valley Falls, and 
  Pasiley, portions of highways 395, 140, and 31, and the higher 
  terrain of the Warner and Hart Mountains, Winter Rim, Yamsey 
  Mountain, and Gearhart Mountain.
 
* WHEN...From 11 AM this morning to 11 PM PDT this evening.

* IMPACTS...Gusty winds could blow around unsecured objects.
  Driving may becvome difficult, especially for high profile
  vehicles. Blowing dust could lower visibilties at times. 

* ADDITIONAL DETAILS...Despite recent rains and the current
  greenup, gusty winds will combine with low humidities to 
  produce elevated fire weather concerns. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Visit us at https://www.weather.gov/Medford
2 follow-up statements
660 
WWUS76 KMFR 062059
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
159 PM PDT Thu May 6 2021

ORZ030-031-070600-
/O.CON.KMFR.WI.Y.0018.000000T0000Z-210507T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Lakeview and Valley Falls
159 PM PDT Thu May 6 2021

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...Southwest winds 30 to 35 mph with gusts up to 55 mph 
  expected.

* WHERE...Portions of Lake County and eastern Klamath County, 
  including the communities of Lakeview, Valley Falls, and 
  Paisley, portions of highways 395, 140, and 31, and the higher 
  terrain of the Warner and Hart Mountains, Winter Rim, Yamsey 
  Mountain, and Gearhart Mountain.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Driving may becvome difficult, especially for high profile 
  vehicles. Blowing dust could lower visibilties at times.

* ADDITIONAL DETAILS...Despite recent rains and the current 
  greenup, gusty winds will combine with low humidities to 
  produce elevated fire weather concerns.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Visit us at https://www.weather.gov/Medford
620 
WWUS76 KMFR 070235
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
735 PM PDT Thu May 6 2021

ORZ030-031-070345-
/O.CAN.KMFR.WI.Y.0018.000000T0000Z-210507T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
735 PM PDT Thu May 6 2021

...WIND ADVISORY IS CANCELLED...

It will remain breezy to windy through early this evening, but
winds will remain below advisory levels. Winds will then diminish
this evening and overnight.

$$

ORZ026-071900-
/O.NEW.KMFR.FZ.A.0004.210508T0300Z-210508T1700Z/
Jackson County-
735 PM PDT Thu May 6 2021

...FREEZE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
MORNING...

* WHAT...Freezing minimum temperatures of 27-31 possible in the
  Freeze Watch area.

* WHERE...Portions of the Applegate Valley, Shady Cove, and
  Prospect in Jackson County.

* WHEN...From late Friday evening through mid-morning Saturday.

* IMPACTS...Frost and freezing temperatures could kill or
  significantly damage cold sensitive crops and other sensitive 
  vegetation.

* ADDITIONAL DETAILS...Frost is likely across many mid-elevation
  and valley locations in southwestern Oregon and northwestern
  California, including in the valleys of Jackson, Josephine, and
  Siskiyou counties Friday night into Saturday morning. Sensitive
  vegetation could be damaged and stunned if left unprotected.

* 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

Nearby

Wind Advisories in Oregon, 2021Every wind advisory in 2021

Sources

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.