Alert archive / California / Wind Advisories in 2017

Wind Advisory 9, NWS Phoenix, AZ

April 12, 2017Imperial County, California

NWS Phoenix, AZ issued this wind advisory at Apr 12, 2017, 10:15 AM PDT for Imperial County, California. It took effect at Apr 13, 2017, 2:00 PM PDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Apr 12, 2017, 10:15 AM PDT (17:15 UTC)
In effect from
Apr 13, 2017, 2:00 PM PDT
Expired
Apr 13, 2017, 11:00 PM PDT
In force
9 hr
Issued by
NWS Phoenix, AZ

County Imperial County, CA

The radar

The Yuma radar (KYUX), 90 km from the middle of the area, began a volume at 17:13 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

San Diego, CA (KNKX), launched 12:00Z, 5.3 hours before the alert went out and 173 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, San Diego, CA at 12:00Z on 2017-04-12Temperature 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, San Diego, CA at 12:00Z on 2017-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1741 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

261 
WWUS75 KPSR 121715
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1015 AM MST Wed Apr 12 2017

CAZ562-566-131000-
/O.NEW.KPSR.WI.Y.0009.170413T2100Z-170414T0600Z/
Imperial County Southwest-Imperial County West-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City
1015 AM PDT Wed Apr 12 2017

...WIND ADVISORY IN EFFECT FROM 2 PM TO 11 PM PDT THURSDAY...

The National Weather Service in Phoenix has issued a Wind
Advisory, which is in effect from 2 PM to 11 PM PDT Thursday. 

* AFFECTED AREA...Far western Imperial County

* TIMING...Thursday afternoon through Thursday evening

* WINDS...West winds 25-35 mph with gusts up to 40 mph. Ridgetops
and wind prone locations could possibly see gusts up to 45 mph.

* IMPACTS...Windy conditions will create hazardous driving 
conditions especially for high profile vehicles along Interstate
8. Locally reduced visibilities due to blowing dust are 
possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of between
30 and 40 mph are expected, or wind gusts of between 40 and
58 mph. Winds this strong can make driving difficult, especially
for high profile vehicles. In addition, strong winds over desert
areas could result in briefly lowered visibilities to well under
a mile at times in blowing dust or blowing sand. Use extra
caution.

&&

$$
4 follow-up statements
735 
WWUS75 KPSR 130932
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
232 AM MST Thu Apr 13 2017

CAZ562-566-132215-
/O.CON.KPSR.WI.Y.0009.170413T2100Z-170414T0600Z/
Imperial County Southwest-Imperial County West-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City
232 AM PDT Thu Apr 13 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
11 PM PDT THIS EVENING...

* AFFECTED AREA...Far southwest Imperial County

* TIMING...Late this afternoon through this evening

* WINDS...West winds 20 to 30 mph with gusts 35 to 40 mph. Some
  isolated locations immediately along the San Diego County line
  could see gusts 45 to 50 mph. 

* IMPACTS...Windy conditions will create dangerous driving
  conditions for high profile vehicles along Interstate 8 west of
  El Centro. Locally reduced visibilities due to blowing dust are
  also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of between
30 and 40 mph are expected, or wind gusts of between 40 and
58 mph. Winds this strong can make driving difficult, especially
for high profile vehicles. In addition, strong winds over desert
areas could result in briefly lowered visibilities to well under
a mile at times in blowing dust or blowing sand. Use extra
caution.

&&

$$
350 
WWUS75 KPSR 132037
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
137 PM MST Thu Apr 13 2017

CAZ562-566-140600-
/O.CON.KPSR.WI.Y.0009.170413T2100Z-170414T0600Z/
Imperial County Southwest-Imperial County West-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City
137 PM PDT Thu Apr 13 2017

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

* AFFECTED AREA...Far southwest Imperial County

* TIMING...Late this afternoon through this evening

* WINDS...West winds 20 to 30 mph with gusts 35 to 40 mph. Some 
  isolated locations immediately along the San Diego County line 
  could see gusts 45 to 50 mph. 

* IMPACTS...Windy conditions will create dangerous driving 
  conditions for high profile vehicles along Interstate 8 west 
  of El Centro. Locally reduced visibilities due to blowing dust 
  are also possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of between
30 and 40 mph are expected, or wind gusts of between 40 and
58 mph. Winds this strong can make driving difficult, especially
for high profile vehicles. In addition, strong winds over desert
areas could result in briefly lowered visibilities to well under
a mile at times in blowing dust or blowing sand. Use extra
caution.

&&

$$
970 
WWUS75 KPSR 140534
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1034 PM MST Thu Apr 13 2017

CAZ562-566-140645-
/O.EXP.KPSR.WI.Y.0009.000000T0000Z-170414T0600Z/
Imperial County Southwest-Imperial County West-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City
1034 PM PDT Thu Apr 13 2017

...WIND ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

Although gusty winds will likely continue into the early morning
hours across Imperial County, advisory-level winds are no longer 
anticipated. Thus, the wind advisory will be allowed to expire.

$$
052 
WWUS75 KPSR 140600
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1100 PM MST Thu Apr 13 2017

CAZ562-566-140700-
/O.EXP.KPSR.WI.Y.0009.000000T0000Z-170414T0600Z/
Imperial County Southwest-Imperial County West-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City
1100 PM PDT Thu Apr 13 2017

...WIND ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING...

Strong windy conditions have diminished this evening and will
remain below advisory thresholds. Therefore the Advisory will be
allowed to expire.

$$

Nearby

Wind 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.