Alert archive / Oregon / Flash Flood Warnings in 1998

Flash Flood Warning 3, NWS Boise, ID

June 12, 1998Malheur County, Oregon

NWS Boise, ID issued this flash flood warning at Jun 12, 1998, 1:13 PM MDT for Malheur County, Oregon. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 12, 1998, 1:13 PM MDT (19:13 UTC)
Expired
Jun 12, 1998, 3:10 PM MDT
In force
117 min
Issued by
NWS Boise, ID
Area
Whole counties

County Malheur County, OR

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 7.2 hours before the alert went out and 122 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 12:00Z on 1998-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 542 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1998-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.193958Sfc1 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
542 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 6:26 PM MDTFlash Flood WarningBOIGem64 min
Jun 12, 1:40 PM MDTFlash Flood WarningBOIOwyhee2 hr
Jun 12, 2:54 PM MDTFlash Flood WarningBOIBoise116 min
Jun 12, 4:49 PM MDTFlash Flood WarningBOIAda, Canyon61 min
Jun 12, 3:05 PM MDTFlash Flood WarningBOIHarney, Malheur115 min
Jun 12, 5:07 PM MDTFlash Flood WarningBOIHarney, Malheur93 min

Nearby

Flash Flood Warnings in Oregon, 1998Every flash flood warning in 1998

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.