Alert archive / Oregon / Wind Advisories in 2021

Wind Advisory 9, NWS Pendleton, OR

February 18, 2021Union County, Oregon

NWS Pendleton, OR issued this wind advisory at Feb 18, 2021, 6:39 PM PST for Union County, Oregon. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Feb 18, 2021, 6:39 PM PST (02:39 UTC)
Expired
Feb 19, 2021, 5:30 AM PST
In force
11 hr
Issued by
NWS Pendleton, OR

County Union County, OR

The radar

The Pendleton radar (KPDT), 78 km from the middle of the area, began a volume at 02:38 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

Boise Airport, ID (KBOI), launched 00:00Z, 2.7 hours before the alert went out and 241 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, Boise Airport, ID at 00:00Z on 2021-02-19Temperature 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, Boise Airport, ID at 00:00Z on 2021-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
1791 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

332 
WWUS76 KPDT 190239
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
639 PM PST Thu Feb 18 2021

ORZ049-191500-
/O.NEW.KPDT.WI.Y.0009.210219T0239Z-210219T1800Z/
Grande Ronde Valley-
Including the cities of Cove, Elgin, and La Grande
639 PM PST Thu Feb 18 2021

...WIND ADVISORY IN EFFECT UNTIL 10 AM PST FRIDAY...

* WHAT...South winds 20 to 30 mph with gusts 40 to 50 mph.

* WHERE...Grande Ronde Valley.

* WHEN...Until 10 AM PST Friday.

* IMPACTS...Gusty winds could blow around unsecured objects. High
  profile vehicles may experience difficulty driving. Tree limbs
  could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

For more information from the National Weather Service visit
https://weather.gov/Pendleton
1 follow-up statement
308 
WWUS76 KPDT 191330
NPWPDT

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
530 AM PST Fri Feb 19 2021

ORZ049-191430-
/O.CAN.KPDT.WI.Y.0009.000000T0000Z-210219T1800Z/
Grande Ronde Valley-
530 AM PST Fri Feb 19 2021

...WIND ADVISORY IS CANCELLED...

Winds across the Grande Ronde Valley have decreased early this
morning, but remain gusty in some areas. However, wind gusts to
advisory levels are no longer expected.


$$

For more information from the National Weather Service visit
https://weather.gov/Pendleton

Nearby

Wind Advisories in Oregon, 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.