Alert archive / Nevada / Flash Flood Warnings in 1997

Flash Flood Warning 10, NWS Reno, NV

July 30, 1997Washoe County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 30, 1997, 1:26 PM PDT for Washoe County, Nevada. It was in force for 59 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 30, 1997, 1:26 PM PDT (20:26 UTC)
Expired: Jul 30, 1997, 2:25 PM PDT
In force: 59 min
Issued by: NWS Reno, NV
Area: Whole counties

County Washoe County, NV

The radar

The Reno radar (KRGX), 103 km from the middle of the area, began a volume at 20:28 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, 8.4 hours before the alert went out and 174 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2 J/kg
Mixed-layer CIN: -270 J/kg
Mixed-layer LCL: 1998 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KRNO 302033
FFWRNO
NVC031-302125-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
126 PM PDT WED JUL 30 1997

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A FLASH FLOOD
WARNING IN EFFECT UNTIL 225 PM FOR PEOPLE IN THE FOLLOWING
LOCATIONS...

IN WESTERN NEVADA 
     SOUTHERN WASHOE COUNTY 
     ...THE GREATER RENO-SPARKS METROPOLITAN AREA.
       
A THUNDERSTORM WITH A HISTORY OF PRODUCING AS MUCH AS ONE INCH OF
RAINFALL IN 20 MINUTES IS MOVING NORTH THROUGH WASHOE VALLEY.
HEAVY RAINFALL ALONG THE EASTERN FOOTHILLS MAY CAUSE FLASH
FLOODING IN HIDDEN VALLEY AND THE VIRGINIA FOOTHILLS. FLOODING OF
STREETS AND ROADS IN RENO ARE ALSO LIKELY TO OCCUR. STRONG WIND GUSTS
WILL ACCOMPANY THIS STORM.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  PEOPLE IN THE WARNING AREA SHOULD MOVE AWAY FROM
WASHES AND SMALL STREAMS.  MANY FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILESV.  DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW
SPOTS IF WATER COVERS THE ROADWAY.

SAMELSON

The office that day

Everything else NWS Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 1:26 PM PDT	Severe Thunderstorm Warning	REV	Washoe	59 min
Jul 30, 3:02 PM PDT	Flash Flood Warning	REV	Churchill	63 min
Jul 30, 3:02 PM PDT	Severe Thunderstorm Warning	REV	Churchill	63 min
Jul 30, 4:30 PM PDT	Flash Flood Warning	REV	Storey, Washoe	60 min
Jul 30, 4:30 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	60 min

Nearby

Flash Flood Warnings in Nevada, 1997 Every 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.