Alert archive / Nevada / Flash Flood Warnings in 2003

Flash Flood Warning 8, NWS Reno, NV

August 1, 2003Storey County, Washoe County, Nevada

NWS Reno, NV issued this flash flood warning at Aug 1, 2003, 5:18 PM PDT for Storey County, Washoe County, Nevada. It was in force for 42 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: Aug 1, 2003, 5:18 PM PDT (00:18 UTC)
Expired: Aug 1, 2003, 6:00 PM PDT
In force: 42 min
Issued by: NWS Reno, NV
Area: Whole counties

Counties Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 35 km from the middle of the area, began a volume at 00:10 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 00:00Z, 0.3 hours before the alert went out and 131 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: 566 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1821 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 84 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 
WGUS55 KREV 020020
FFWREV
NVC029-031-020100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
518 PM PDT FRI AUG 1 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN STOREY COUNTY IN WESTERN NEVADA
  SOUTH CENTRAL WASHOE COUNTY IN WESTERN NEVADA
  THIS INCLUDES THE CITY OF RENO

* UNTIL 600 PM PDT

* AT 510 PM PDT...THE NEVADA HIGHWAY PATROL REPORTED VERY HEAVY RAIN 
  IN THE GEIGER GRADE AREA...ABOUT 8 MILES SOUTH OF LOCKWOOD...OR    
  ABOUT 6 MILES NORTH OF VIRGINIA CITY. THE VERY HEAVY RAIN          
  WAS MOVING NORTHWEST AT 15 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE MOVING INTO THE 
RENO-SPRAKS AREA DURING THE NEXT 45 MINUTES.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.  
DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN 
DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT 
IMMEDIATELY AND SEEK HIGHER GROUND.

TO REPORT DAMAGING WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

$$

LAT...LON 3930 11963 3946 11951 3967 11995 3946 11996

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 6:00 PM PDT	Flash Flood Warning	REV	Storey, Washoe	60 min
Aug 1, 6:40 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Washoe	20 min

Nearby

Flash Flood Warnings in Nevada, 2003 Every flash flood warning in 2003

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.