Alert archive / California / Flash Flood Warnings in 2001

Flash Flood Warning 2, NWS Reno, NV

July 10, 2001Alpine County, Mono County, California; Douglas County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 10, 2001, 4:20 PM PDT for Alpine County, Mono County, California; Douglas County, Nevada. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 10, 2001, 4:20 PM PDT (23:20 UTC)
Expired: Jul 10, 2001, 5:15 PM PDT
In force: 55 min
Issued by: NWS Reno, NV
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Alpine County, CA, Mono County, CA, Douglas County, NV

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 11.3 hours before the alert went out and 156 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: 16 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 2236 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 39 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 102320
FFWREV
CAC003-051-NVC005-110015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
420 PM PDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL ALPINE COUNTY IN CENTRAL CALIFORNIA
  EXTREME NORTHWESTERN MONO COUNTY IN CENTRAL CALIFORNIA
  THIS INCLUDES...COLEVILLE AND...TOPAZ LAKE
  SOUTHEASTERN DOUGLAS COUNTY IN WESTERN NEVADA

* UNTIL 515 PM PDT

* AT 413 PM PDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN ABOUT NEAR COLEVILLE...MOVING NORTHWEST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE WALKER

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

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

LAT...LON 3848 11950 3870 11936 3883 11957 3861 11970

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:29 PM PDT	Severe Thunderstorm Warning	REV	Plumas	31 min
Jul 10, 2:15 PM PDT	Severe Thunderstorm Warning	REV	Alpine	45 min
Jul 10, 3:00 PM PDT	Severe Thunderstorm Warning	REV	Nevada, Sierra	30 min
Jul 10, 3:45 PM PDT	Severe Thunderstorm Warning	REV	Placer	45 min
Jul 10, 4:40 PM PDT	Flash Flood Warning	REV	Nevada, Placer	60 min

Nearby

Flash Flood Warnings in California, 2001 Flash Flood Warnings in Nevada, 2001 Every flash flood warning in 2001

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.