Alert archive / Idaho / Flash Flood Warnings in 1987

Flash Flood Warning 1, NWS Pocatello, ID

May 16, 1987Bonneville County, Teton County, Idaho

NWS Pocatello, ID issued this flash flood warning at May 16, 1987, 5:20 PM MDT for Bonneville County, Teton County, Idaho. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 16, 1987, 5:20 PM MDT (23:20 UTC)
Expired
May 16, 1987, 7:20 PM MDT
In force
2 hr
Issued by
NWS Pocatello, ID
Area
Whole counties

Counties Bonneville County, ID, Teton County, ID

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 11.3 hours before the alert went out and 313 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, Salt Lake City I, UT at 12:00Z on 1987-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Salt Lake City I, UT at 12:00Z on 1987-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
17 J/kg
Mixed-layer CIN
-129 J/kg
Mixed-layer LCL
1617 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
54 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 Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 5:20 PM MDTFlash Flood WarningPIHBannock2 hr

Nearby

Flash Flood Warnings in Idaho, 1987Every flash flood warning in 1987

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.