Alert archive / Oregon / Wind Advisories in 2009

Wind Advisory 18, NWS Pendleton, OR

March 28, 20095 counties in Oregon; 5 counties in Washington

NWS Pendleton, OR issued this wind advisory at Mar 28, 2009, 3:54 AM PDT for 5 counties in Oregon; 5 counties in Washington. It took effect at Mar 28, 2009, 4:00 PM PDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Mar 28, 2009, 3:54 AM PDT (10:54 UTC)
In effect from
Mar 28, 2009, 4:00 PM PDT
Expired
Mar 29, 2009, 4:00 AM PDT
In force
12 hr
Issued by
NWS Pendleton, OR

Counties Gilliam County, OR, Morrow County, OR, Sherman County, OR, Umatilla County, OR, Wasco County, OR, Benton County, WA, Columbia County, WA, Franklin County, WA, Klickitat County, WA, Walla Walla County, WA

The radar

The Pendleton radar (KPDT), 59 km from the middle of the area, began a volume at 10:56 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

Spokane, WA (KOTX), launched 00:00Z, 10.9 hours before the alert went out and 321 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, Spokane, WA at 00:00Z on 2009-03-28Temperature 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, Spokane, WA at 00:00Z on 2009-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.1939587897117136Sfc1 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
1472 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 3:41 AM PDTWinter Storm WatchPDTGilliam, Grant, Morrow, Umatilla, Union, Wallowa and 1 more5 hr
Mar 28, 8:46 AM PDTWinter Storm WarningPDTGilliam, Grant, Morrow, Umatilla, Union, Wallowa and 1 more30 hr

Nearby

Wind Advisories in Oregon, 2009Wind Advisories in Washington, 2009Every wind advisory in 2009

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.