Alert archive / Washington / Red Flag Warnings in 2010

Red Flag Warning 7, NWS Pendleton, OR

August 5, 2010Clark County, Skamania County, Washington

NWS Pendleton, OR issued this red flag warning at Aug 5, 2010, 9:16 AM PDT for Clark County, Skamania County, Washington. It took effect at Aug 5, 2010, 1:00 PM PDT. It was in force for 33 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 5, 2010, 9:16 AM PDT (16:16 UTC)
In effect from
Aug 5, 2010, 1:00 PM PDT
Expired
Aug 6, 2010, 10:27 PM PDT
In force
33 hr
Issued by
NWS Pendleton, OR

Counties Clark County, WA, Skamania County, WA

The radar

The Portland,OR radar (KRTX), 63 km from the middle of the area, began a volume at 16:14 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

Quillayute State, WA (KUIL), launched 12:00Z, 4.3 hours before the alert went out and 287 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, Quillayute State, WA at 12:00Z on 2010-08-05Temperature 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, Quillayute State, WA at 12:00Z on 2010-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
1210 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
11 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
Aug 5, 3:51 PM PDTSpecial Weather StatementPDTUnion54 min
Aug 5, 4:09 PM PDTSevere Thunderstorm WarningPDTUnion65 min
Aug 5, 4:42 PM PDTAreal Flood AdvisoryPDTUnion3 hr
Aug 5, 4:40 PM PDTFlash Flood WarningPDTKittitas73 min

Nearby

Red Flag Warnings in Washington, 2010Red Flag Warnings in Oregon, 2010Every red flag warning in 2010

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.