Alert archive / California / Wind Advisories in 2018

Wind Advisory 2, NWS Phoenix, AZ

January 19, 2018Imperial County, California

NWS Phoenix, AZ issued this wind advisory at Jan 19, 2018, 11:50 PM PST for Imperial County, California. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jan 19, 2018, 11:50 PM PST (07:50 UTC)
Expired
Jan 20, 2018, 4:00 AM PST
In force
4 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 07:50 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

Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 7.8 hours before the alert went out and 108 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, Yuma Prvg Ground, AZ at 00:00Z on 2018-01-20Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Yuma Prvg Ground, AZ at 00:00Z on 2018-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.19395878Sfc1 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
3170 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

403 
WWUS75 KPSR 200750
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1250 AM MST Sat Jan 20 2018

CAZ562-566-567-201200-
/O.NEW.KPSR.WI.Y.0002.180120T0750Z-180120T1200Z/
Imperial County Southwest-Imperial County West-Imperial Valley-
Including the cities of Mountain Spring, Coolidge Springs, 
Salton City, Winona, Coyote Wells, Ocotillo, Plaster City, 
El Centro, Calexico, Alamorio, and Brawley
1150 PM PST Fri Jan 19 2018

...WIND ADVISORY IN EFFECT UNTIL 4 AM PST SATURDAY...

The National Weather Service in Phoenix has issued a Wind
Advisory, which is in effect until 4 AM PST Saturday. 

* AFFECTED AREA...Southwestern Imperial County including the
  Imperial Valley and the communities of Imperial and El Centro.

* TIMING...Through 4am PST.

* WINDS...West winds 20 to 35 mph with gusts to around 45 mph at 
  times.

* IMPACTS...Strong wind gusts will produce patchy dense blowing
  dust which will lead to sharply restricted visibility and
  hazardous driving conditions.

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.

&&

$$

Nearby

Wind 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.