Alert archive / Idaho / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS Boise, ID

May 16, 1997Owyhee County, Idaho

NWS Boise, ID issued this flash flood warning at May 16, 1997, 7:15 PM MDT for Owyhee County, Idaho. It was in force for 75 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
May 16, 1997, 7:15 PM MDT (01:15 UTC)
Expired
May 16, 1997, 8:30 PM MDT
In force
75 min
Issued by
NWS Boise, ID
Area
Whole counties

County Owyhee County, ID

The radar

The Boise radar (KCBX), 101 km from the middle of the area, began a volume at 01:14 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

Boise Airport, ID (KBOI), launched 00:00Z, 1.3 hours before the alert went out and 110 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 1997-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 417 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 00:00Z on 1997-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
417 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
2989 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
32 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
May 16, 6:15 PM MDTFlash Flood WarningBOIOwyhee45 min
May 16, 6:15 PM MDTSevere Thunderstorm WarningBOIOwyhee45 min
May 16, 6:57 PM MDTFlash Flood WarningBOIOwyhee63 min
May 16, 6:57 PM MDTSevere Thunderstorm WarningBOIOwyhee63 min
May 16, 7:11 PM MDTFlash Flood WarningBOIOwyhee79 min
May 16, 7:11 PM MDTSevere Thunderstorm WarningBOIOwyhee79 min
May 16, 7:57 PM MDTFlash Flood WarningBOIOwyhee63 min
May 16, 8:51 PM MDTFlash Flood WarningBOIOwyhee69 min

Nearby

Flash Flood Warnings in Idaho, 1997Every flash flood warning in 1997

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.