Alert archive / Nevada / Flash Flood Warnings in 1998

Flash Flood Warning 7, NWS Reno, NV

July 23, 1998Lyon County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 23, 1998, 5:13 PM PDT for Lyon County, Nevada. It was in force for 62 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, 5:13 PM PDT (00:13 UTC)
Expired
Jul 23, 1998, 6:15 PM PDT
In force
62 min
Issued by
NWS Reno, NV
Area
Whole counties

County Lyon County, NV

The radar

The Reno radar (KRGX), 85 km from the middle of the area, began a volume at 00:13 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, 0.2 hours before the alert went out and 105 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 240016
FFWRNO
NVC019-240115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
513 PM PDT THU JUL 23 1998

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

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

* UNTIL 615 PM PDT

* AT 510 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN 6 MILES WEST OF
  WABUSKA.  THE THUNDERSTORM WAS NEARLY STATIONARY.

* A THUNDERSTORM WEST OF WABUSKA IS PRODUCING HEAVY RAIN IN THE
  MOUNTAINS JUST EAST OF LYON PEAK.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS...AND BE PREPARED
TO MOVE TO HIGHER GROUND...SHOULD FLOOD WATERS THREATEN.  IF FLASH
FLOODING IS OBSERVED...ACT QUICKLY.  MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS.  DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

OTTESON\GOLDSTEIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:50 PM PDTFlash Flood WarningREVChurchill, Lyon85 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.