Alert archive / California / Flash Flood Warnings in 1997

Flash Flood Warning 5, NWS Reno, NV

July 26, 1997Sierra County, California

NWS Reno, NV issued this flash flood warning at Jul 26, 1997, 2:05 PM PDT for Sierra County, California. It was in force for 55 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
Jul 26, 1997, 2:05 PM PDT (21:05 UTC)
Expired
Jul 26, 1997, 3:00 PM PDT
In force
55 min
Issued by
NWS Reno, NV
Area
Whole counties

County Sierra County, CA

The radar

The Reno radar (KRGX), 92 km from the middle of the area, began a volume at 21:07 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

Reno, NV (KREV), launched 12:00Z, 9.1 hours before the alert went out and 198 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, Reno, NV at 12:00Z on 1997-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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, Reno, NV at 12:00Z on 1997-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
5 J/kg
Mixed-layer CIN
-202 J/kg
Mixed-layer LCL
2221 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
85 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 Reno, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 2:05 PM PDTSevere Thunderstorm WarningREVSierra55 min
Jul 26, 4:10 PM PDTFlash Flood WarningREVLassen55 min
Jul 26, 4:10 PM PDTSevere Thunderstorm WarningREVLassen55 min
Jul 26, 4:45 PM PDTFlash Flood WarningREVLassen60 min
Jul 26, 4:45 PM PDTSevere Thunderstorm WarningREVLassen60 min

Nearby

Flash Flood Warnings in California, 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.