Alert archive / Nevada / Flash Flood Warnings in 2003

Flash Flood Warning 6, NWS Reno, NV

July 31, 2003Douglas County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 31, 2003, 1:38 PM PDT for Douglas County, Nevada. It was in force for 37 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 31, 2003, 1:38 PM PDT (20:38 UTC)
Expired: Jul 31, 2003, 2:15 PM PDT
In force: 37 min
Issued by: NWS Reno, NV
Area: Whole counties

County Douglas County, NV

The radar

The Reno radar (KRGX), 95 km from the middle of the area, began a volume at 20:41 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, 8.6 hours before the alert went out and 142 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: 3 J/kg
Mixed-layer CIN: -379 J/kg
Mixed-layer LCL: 2514 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 153 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 312042
FFWREV
NVC005-510-312115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
138 PM PDT THU JUL 31 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARSON CITY IN WESTERN NEVADA
  NORTHWESTERN DOUGLAS COUNTY IN WESTERN NEVADA
  
* UNTIL 215 PM PDT

* AT 130 PM PDT...WEATHER SPOTTERS REPORTED VERY HEAVY RAIN IN THE   
  JOHNSON LANE AREA...ABOUT 7 MILES NORTH OF GARDNERVILLE. THE       
  THUNDERSTORM PRODUCING THE HEAVY RAIN WAS MOVING NORTHWEST AT 15   
  MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE...
  OVER INDIAN HILLS AT 150 PM PDT
  6 MILES SOUTHWEST OF CARSON CITY AT 200 PM PDT
  3 MILES NORTHEAST OF SPOONER SUMMIT AT 210 PM PDT
  4 MILES NORTHEAST OF GLENBROOK AT 215 PM PDT

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 3893 11972 3908 11958 3928 11990 3910 12007

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 1:53 PM PDT	Severe Thunderstorm Warning	REV	Douglas, Washoe	22 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.