Alert archive / Nevada / Flash Flood Warnings in 1998

Flash Flood Warning 9, NWS Reno, NV

July 23, 1998Churchill County, Lyon County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 23, 1998, 8:50 PM PDT for Churchill County, Lyon County, Nevada. It was in force for 85 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 23, 1998, 8:50 PM PDT (03:50 UTC)
Expired
Jul 23, 1998, 10:15 PM PDT
In force
85 min
Issued by
NWS Reno, NV
Area
Whole counties

Counties Churchill County, NV, Lyon County, NV

The radar

The Reno radar (KRGX), 78 km from the middle of the area, began a volume at 03:52 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, 3.8 hours before the alert went out and 57 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 00:00Z on 1998-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 407 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1998-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.193958Sfc1 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
407 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1948 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRNO 240356 COR
FFWRNO
NVC001-019-240515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING ...CORRECTED SPELLING
NATIONAL WEATHER SERVICE RENO NV
850 PM PDT THU JUL 23 1998

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN CHURCHILL COUNTY IN WEST CENTRAL NEVADA
  NORTHERN LYON COUNTY IN WEST CENTRAL NEVADA

* UNTIL 1015 PM PDT

* AT 830 PM...AREA LAW ENFORCEMENT OFFICIALS REPORTED HEAVY
  RAIN IN THE FERNLEY AREA. THE STORMS WERE MOVING SLOWLY EAST. THE    
  HEAVY RAIN SHOULD MOVE INTO THE HAZEN AREA JUST AFTER 9 PM AND INTO  
  THE FALLON AREA BY 930 PM.

* HEAVY RAIN AND FLASH FLOODING HAVE BEEN REPORTED IN THE FERNLEY AREA
  BY THE LYON COUNTY SHERIFFS OFFICE.

PEOPLE IN THE WARNING AREA SHOULD MOVE AWAY FROM WASHES AND SMALL
STREAMS. DO NOT ATTEMPT TO CROSS BRIDGES...ROADS...OR LOW SPOTS IF
WATER COVERS THE ROADWAY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 5:13 PM PDTFlash Flood WarningREVLyon62 min
Jul 24, 3:56 PM PDTFlash Flood WarningREVMineral64 min

Nearby

Flash Flood Warnings in Nevada, 1998Every flash flood warning in 1998

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.