Alert archive / Washington / Red Flag Warnings in 2013

Red Flag Warning 14, NWS Pendleton, OR

August 24, 2013Clark County, Skamania County, Washington

NWS Pendleton, OR issued this red flag warning at Aug 24, 2013, 9:08 AM PDT for Clark County, Skamania County, Washington. It took effect at Aug 24, 2013, 2:00 PM PDT. It was in force for 39 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 24, 2013, 9:08 AM PDT (16:08 UTC)
In effect from
Aug 24, 2013, 2:00 PM PDT
Expired
Aug 26, 2013, 5:00 AM PDT
In force
39 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 16:06 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 4.1 hours before the alert went out and 396 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, Medford/Jackson, OR at 12:00Z on 2013-08-24Temperature 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, Medford/Jackson, OR at 12:00Z on 2013-08-24The 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
1178 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
108 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 24, 9:08 AM PDTFire Weather WatchPDT5 hr
Aug 24, 4:40 PM PDTSpecial Weather StatementPDTWheeler65 min
Aug 24, 4:44 PM PDTSpecial Weather StatementPDTUmatilla61 min

Nearby

Red Flag Warnings in Washington, 2013Red Flag Warnings in Oregon, 2013Every red flag warning in 2013

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.