Alert archive / Oregon / Wind Advisories in 2018

Wind Advisory 21, NWS Medford, OR

April 9, 2018Modoc County, California; Klamath County, Lake County, Oregon

NWS Medford, OR issued this wind advisory at Apr 9, 2018, 3:44 AM PDT for Modoc County, California; Klamath County, Lake County, Oregon. It took effect at Apr 10, 2018, 2:00 AM PDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Apr 9, 2018, 3:44 AM PDT (10:44 UTC)
In effect from
Apr 10, 2018, 2:00 AM PDT
Expired
Apr 10, 2018, 2:38 PM PDT
In force
13 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 10:47 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, 10.7 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 2018-04-09Temperature 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 2018-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939587897Sfc1 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
1605 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

342 
WWUS76 KMFR 091044
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
344 AM PDT Mon Apr 9 2018

CAZ085-ORZ030-031-092245-
/O.NEW.KMFR.WI.Y.0021.180410T1100Z-180411T0000Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
344 AM PDT Mon Apr 9 2018

...WIND ADVISORY IN EFFECT FROM 4 AM TO 5 PM PDT TUESDAY...

The National Weather Service in Medford has issued a Wind
Advisory...which is in effect from 4 AM to 5 PM PDT Tuesday. 

* Winds...South to southwest 25 to 35 mph with gusts to 55 mph.

* Timing...4 AM through 5 PM PDT Tuesday.

* Locations include...Highway 31 between Paisley and Silver Lake,
  highway 140 east of Adel, and the the higher elevations of Lake
  and Modoc Counties, particularly Winter Rim and the Warner
  Mountains.

* Impacts...Driving could be difficult, especially for high
  profile vehicles.

* 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.

&&

$$
3 follow-up statements
261 
WWUS76 KMFR 091749
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1049 AM PDT Mon Apr 9 2018

CAZ085-ORZ030-031-101200-
/O.EXT.KMFR.WI.Y.0021.180410T0900Z-180411T0300Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the city of Adel
1049 AM PDT Mon Apr 9 2018

...WIND ADVISORY NOW IN EFFECT FROM 2 AM TO 8 PM PDT TUESDAY...

* Winds...South to southwest 25 to 35 mph with gusts to 55 mph.

* Timing...2 AM through 8 PM PDT Tuesday. The strongest winds will
  occur between 4 AM and 5 PM. 

* Locations include...Highway 31 between Paisley and Silver 
  Lake, highway 140 east of Adel, and the the higher elevations 
  of Lake and Modoc Counties, particularly Winter Rim and the 
  Warner Mountains. 

* Impacts...Driving could be difficult, especially for high 
  profile vehicles. 

* 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.

&&

$$
404 
WWUS76 KMFR 101024
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
324 AM PDT Tue Apr 10 2018

CAZ085-ORZ030-031-110000-
/O.CON.KMFR.WI.Y.0021.000000T0000Z-180411T0300Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the city of Adel
324 AM PDT Tue Apr 10 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* Winds...South to southwest 25 to 35 mph with gusts to 55 mph.

* Timing...Winds will increase this morning and then peak as the
  front passes late morning through early afternoon.

* Locations include...Highway 31 between Paisley and Silver 
  Lake, highway 140 east of Adel, and the the higher elevations 
  of Lake and Modoc Counties, particularly Winter Rim and the 
  Warner Mountains. 

* Impacts...Driving could be difficult, especially for high 
  profile vehicles. 

* 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.

&&

$$
995 
WWUS76 KMFR 102138
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
238 PM PDT Tue Apr 10 2018

CAZ085-ORZ030-031-102245-
/O.CAN.KMFR.WI.Y.0021.000000T0000Z-180411T0300Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
238 PM PDT Tue Apr 10 2018

...WIND ADVISORY IS CANCELLED...

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

Southwest to west winds of 15 to 25 mph with occasional gusts up 
to 40 mph can be expected through early this evening, but winds 
should remain below the 45 mph advisory criteria. Therefore, the 
wind advisory has been cancelled. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 2:40 AM PDTGale WarningMFR29 hr
Apr 9, 2:40 AM PDTSmall Craft AdvisoryMFR29 hr
Apr 9, 2:40 AM PDTHazardous Seas WarningMFR50 hr
Apr 9, 2:40 AM PDTSmall Craft Advisory for Hazardous SeasMFR50 hr
Apr 9, 2:32 PM PDTGale WatchMFR20 hr

Nearby

Wind Advisories in Oregon, 2018Wind Advisories in California, 2018Every wind advisory in 2018

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.