Alert archive / Oregon / Wind Advisories in 2017

Wind Advisory 33, NWS Medford, OR

October 20, 2017Modoc County, California; Klamath County, Lake County, Oregon

NWS Medford, OR issued this wind advisory at Oct 20, 2017, 6:18 PM PDT for Modoc County, California; Klamath County, Lake County, Oregon. It took effect at Oct 21, 2017, 8:00 AM PDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Oct 20, 2017, 6:18 PM PDT (01:18 UTC)
In effect from
Oct 21, 2017, 8:00 AM PDT
Expired
Oct 22, 2017, 8:00 AM PDT
In force
24 hr
Issued by
NWS Medford, OR

Counties Modoc County, CA, Klamath County, OR, Lake County, OR

The radar

The Medford radar (KMAX), 151 km from the middle of the area, began a volume at 01:20 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, 1.3 hours before the alert went out and 154 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 2017-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 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 2017-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939587897117Sfc1 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
19 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1213 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

045 
WWUS76 KMFR 210118
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
618 PM PDT Fri Oct 20 2017

CAZ085-ORZ030-031-211330-
/O.NEW.KMFR.WI.Y.0033.171021T1500Z-171022T0600Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
618 PM PDT Fri Oct 20 2017

...WIND ADVISORY IN EFFECT FROM 8 AM TO 11 PM PDT SATURDAY...

The National Weather Service in Medford has issued a Wind
Advisory...which is in effect from 8 AM to 11 PM PDT Saturday. 

* Winds...South to southeast 20 to 30 mph with gusts to 55 mph.

* Timing...Peaking late morning to early afternoon. 

* Locations include...Highway 31 between Paisley and Silver Lake.
  Portions of highway 140 east of Adel. Portions of Highway 395
  between highway 31 and Alkali Lake, and portions of highway 299
  east of highway 395. Portions of the Plush Cutoff Road will 
  also be affected.

* Impacts...Driving may become difficult, especially for high
  profile vehicles. Furthermore, loose objects may blow away.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected with 
higher gusts possible. Winds this strong can make driving 
difficult, especially for high profile vehicles. Use extra 
caution.

&&

$$
4 follow-up statements
879 
WWUS76 KMFR 210947
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
247 AM PDT Sat Oct 21 2017

CAZ085-ORZ030-031-212200-
/O.CON.KMFR.WI.Y.0033.171021T1500Z-171022T0600Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
247 AM PDT Sat Oct 21 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
11 PM PDT THIS EVENING...

* Winds...South to southeast 20 to 30 mph with gusts to 55 mph.

* Timing...Peaking late morning to early afternoon.

* Locations include...Highway 31 between Paisley and Silver 
  Lake. Portions of highway 140 east of Adel. Portions of 
  Highway 395 between highway 31 and Alkali Lake, and portions 
  of highway 299 east of highway 395. Portions of the Plush 
  Cutoff Road will also be affected. 

* Impacts...Driving may become difficult, especially for high 
  profile vehicles. Furthermore, loose objects may blow away. 

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected with
higher gusts possible. Winds this strong can make driving
difficult, especially for high profile vehicles. Use extra
caution.

&&

$$
417 
WWUS76 KMFR 212135
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
235 PM PDT Sat Oct 21 2017

CAZ085-ORZ030-031-220600-
/O.CON.KMFR.WI.Y.0033.000000T0000Z-171022T0600Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
235 PM PDT Sat Oct 21 2017

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

* Winds...South to southeast 20 to 30 mph with gusts to 55 mph.

* Timing...Gusty winds will continue through the evening, peaking
  during the afternoon.

* Locations include...Highway 31 between Paisley and Silver 
  Lake. Portions of highway 140 east of Adel. Portions of 
  Highway 395 between highway 31 and Alkali Lake, and portions 
  of highway 299 east of highway 395. Portions of the Plush 
  Cutoff Road will also be affected. 

* Impacts...Driving may become difficult, especially for high 
  profile vehicles. Furthermore, loose objects may blow away. 

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected with
higher gusts possible. Winds this strong can make driving
difficult, especially for high profile vehicles. Use extra
caution.

&&

$$
684 
WWUS76 KMFR 220402
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
902 PM PDT Sat Oct 21 2017

CAZ085-ORZ030-031-221500-
/O.EXT.KMFR.WI.Y.0033.000000T0000Z-171022T1500Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
902 PM PDT Sat Oct 21 2017

...WIND ADVISORY NOW IN EFFECT UNTIL 8 AM PDT SUNDAY...

* Winds...South to southwest 20 to 30 mph with gusts to 55 mph.

* Timing...Gusty winds will continue through tomorrow morning,
  peaking around 4AM.

* Locations include...Highway 31 between Paisley and Silver Lake.
  The Warner Mountains, and portions of highway 299 east of 
  highway 395.

* Impacts...Driving may become difficult, especially for high 
  profile vehicles. Furthermore, loose objects may blow away. 

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected with
higher gusts possible. Winds this strong can make driving
difficult, especially for high profile vehicles. Use extra
caution.

&&

$$
228 
WWUS76 KMFR 220946
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
246 AM PDT Sun Oct 22 2017


CAZ085-221100-
/O.CAN.KMFR.WI.Y.0033.000000T0000Z-171022T1500Z/
Modoc County-
246 AM PDT Sun Oct 22 2017

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Medford has cancelled the Wind
Advisory. 

Winds at higher elevations in northern California have dropped 
below advisory levels.

$$

ORZ030-031-221500-
/O.CON.KMFR.WI.Y.0033.000000T0000Z-171022T1500Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
246 AM PDT Sun Oct 22 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING...

* Winds...South to southwest 20 to 30 mph with gusts to 55 mph.

* Timing...Gusty winds will continue through tomorrow morning, 
  peaking around 4AM. 

* Locations include...Highway 31 between Paisley and Silver 
  Lake. The Warner Mountains, and portions of highway 299 east 
  of highway 395. 

* Impacts...Driving may become difficult, especially for high 
  profile vehicles. Furthermore, loose objects may blow away. 

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected with
higher gusts possible. Winds this strong can make driving
difficult, especially for high profile vehicles. Use extra
caution.

&&

$$

CZS

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 3:03 AM PDTSmall Craft AdvisoryMFR36 hr
Oct 21, 3:03 AM PDTHazardous Seas WarningMFR38 hr
Oct 21, 2:30 PM PDTSmall Craft Advisory for Hazardous SeasMFR63 hr

Nearby

Wind Advisories in Oregon, 2017Wind Advisories in California, 2017Every wind advisory in 2017

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.