Alert archive / California / Wind Advisories in 2021

Wind Advisory 5, NWS San Diego, CA

January 28, 2021San Bernardino County, California

NWS San Diego, CA issued this wind advisory at Jan 28, 2021, 12:42 PM PST for San Bernardino County, California. It took effect at Jan 28, 2021, 2:00 PM PST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Jan 28, 2021, 12:42 PM PST (20:42 UTC)
In effect from
Jan 28, 2021, 2:00 PM PST
Expired
Jan 29, 2021, 2:00 AM PST
In force
12 hr
Issued by
NWS San Diego, CA

County San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 20:44 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

Las Vegas, NV (KVEF), launched 12:00Z, 8.7 hours before the alert went out and 180 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, Las Vegas, NV at 12:00Z on 2021-01-28Temperature 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, Las Vegas, NV at 12:00Z on 2021-01-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1515 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
318 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

202 
WWUS76 KSGX 282042
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
1242 PM PST Thu Jan 28 2021

CAZ060-291000-
/O.NEW.KSGX.WI.Y.0005.210128T2200Z-210129T1000Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
1242 PM PST Thu Jan 28 2021

...WIND ADVISORY IN EFFECT UNTIL 2 AM PST FRIDAY...

* WHAT...South winds 20 to 30 mph with gusts 45 to 50 mph 
  expected.

* WHERE...Apple and Lucerne Valleys. Strongest winds will be near
  the foothills of the San Bernardino mountains. 

* WHEN...Until 2 AM PST Friday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CO

For more information from the National Weather Service visit
http://weather.gov/sandiego

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 28, 2:03 AM PSTSmall Craft AdvisorySGX40 hr
Jan 28, 3:07 AM PSTWinter Weather AdvisorySGXSan Diego39 hr

Nearby

Wind Advisories in California, 2021Every wind advisory in 2021

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.