Alert archive / California / Wind Advisories in 2016

Wind Advisory 31, NWS Medford, OR

April 21, 2016Siskiyou County, California

NWS Medford, OR issued this wind advisory at Apr 21, 2016, 2:21 AM PDT for Siskiyou County, California. It took effect at Apr 21, 2016, 12:00 PM PDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 21, 2016, 2:21 AM PDT (09:21 UTC)
In effect from
Apr 21, 2016, 12:00 PM PDT
Expired
Apr 21, 2016, 7:00 PM PDT
In force
7 hr
Issued by
NWS Medford, OR

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 09:21 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, 9.4 hours before the alert went out and 89 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 2016-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 235 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 2016-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
235 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
2331 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

576 
WWUS76 KMFR 210921
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
221 AM PDT THU APR 21 2016

CAZ081-220300-
/O.NEW.KMFR.WI.Y.0031.160421T1900Z-160422T0300Z/
CENTRAL SISKIYOU COUNTY-
221 AM PDT THU APR 21 2016

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM PDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM PDT THIS
EVENING. 

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS TO 45 MPH.

* LOCATIONS INCLUDE...WEED AND INTERSTATE 5 IN THE SOUTHERN SHASTA
  VALLEY.

* IMPACTS...TRAVEL MAY BECOME DIFFICULT FOR HIGH-PROFILE VEHICLES
  ALONG INTERSTATE 5 NEAR WEED.

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/HAZARD 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 25 TO 39 MPH ARE EXPECTED
WITH HIGHER GUSTS POSSIBLE. WINDS THIS STRONG CAN MAKE DRIVING
DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA
CAUTION.

&&

$$

SK
2 follow-up statements
639 
WWUS76 KMFR 212124
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
224 PM PDT THU APR 21 2016

CAZ081-220300-
/O.CON.KMFR.WI.Y.0031.000000T0000Z-160422T0300Z/
CENTRAL SISKIYOU COUNTY-
224 PM PDT THU APR 21 2016

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

* WINDS...SOUTH 25 TO 35 MPH WITH GUSTS TO 45 MPH.

* LOCATIONS INCLUDE...WEED AND INTERSTATE 5 IN THE SOUTHERN 
  SHASTA VALLEY. 

* IMPACTS...TRAVEL MAY BECOME DIFFICULT FOR HIGH-PROFILE 
  VEHICLES ALONG INTERSTATE 5 NEAR WEED. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/HAZARD 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 25 TO 39 MPH ARE EXPECTED
WITH HIGHER GUSTS POSSIBLE. WINDS THIS STRONG CAN MAKE DRIVING
DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA
CAUTION.

&&

$$
654 
WWUS76 KMFR 220200
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
700 PM PDT THU APR 21 2016

CAZ081-220300-
/O.CAN.KMFR.WI.Y.0031.000000T0000Z-160422T0300Z/
CENTRAL SISKIYOU COUNTY-
700 PM PDT THU APR 21 2016

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS CANCELLED THE WIND
ADVISORY. 

$$

STOCKTON

Nearby

Wind Advisories in California, 2016Every wind advisory in 2016

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.