Alert archive / Nevada / Flash Flood Warnings in 2015

Flash Flood Warning 7, NWS Reno, NV

July 1, 2015Storey County, Washoe County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 1, 2015, 6:03 PM PDT for Storey County, Washoe County, Nevada. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 1, 2015, 6:03 PM PDT (01:03 UTC)
Expired: Jul 1, 2015, 9:00 PM PDT
In force: 3 hr
Issued by: NWS Reno, NV
Area: Storm-based polygon
Flood severity: None

Counties Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 18 km from the middle of the area, began a volume at 01:06 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, 1.1 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-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: 1004 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 2727 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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.

649 
WGUS55 KREV 020103
FFWREV
NVC029-031-020400-
/O.NEW.KREV.FF.W.0007.150702T0103Z-150702T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
603 PM PDT WED JUL 1 2015

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL WASHOE COUNTY IN WESTERN NEVADA...
  STOREY COUNTY IN WESTERN NEVADA...

* UNTIL 900 PM PDT
    
* AT 601 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN EAST OF PATRICK ALONG I-80 NEAR THE RENO TAHOE 
  INDUSTRIAL PARK. FLASH FLOODING IS OCCURRING OR EXPECTED TO BEGIN 
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... DERBY DAM, 
  RENO TAHOE INDUSTRIAL PARK, AND I-80 BETWEEN SPARKS AND FERNLEY. 
  WATCH FOR ROCK SLIDES AND FLOODING OF LOW SPOTS IN THE ROAD.

* THIS STORM WILL ALSO PRODUCE WIND GUSTS NEAR 50-60 MPH, FREQUENT 
  LIGHTNING, AND SMALL HAIL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
  ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. A FEW 
  INCHES OF FAST FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES 
  OFF THE ROAD.

&&

LAT...LON 3967 11940 3958 11932 3949 11939 3951 11952
      3964 11951

$$

CS

3 follow-up statements

503 
WGUS75 KREV 020138
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
638 PM PDT WED JUL 1 2015

NVC029-031-020400-
/O.CON.KREV.FF.W.0007.000000T0000Z-150702T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHOE NV-STOREY NV-
638 PM PDT WED JUL 1 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM PDT FOR
SOUTH CENTRAL WASHOE AND STOREY COUNTIES...

* AT 636 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ALONG I-80 EAST OF THE RENO TAHOE INDUSTRIAL PARK.  
  FLASH FLOODING IS OCCURRING OR EXPECTED TO BEGIN SHORTLY. THE 
  STORM IS MOVING EASTWARD TOWARD WADSWORTH.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... DERBY DAM, 
  AND I-80 BETWEEN THE RENO TAHOE INDUSTRIAL AREA AND FERNLEY. 
  TRAVELERS SHOULD BE PREPARED FOR TORRENTIAL RAINFALL AND FLOODED 
  AREAS. WATCH FOR ROCK SLIDES WHERE STEEP TERRAIN IS NEXT TO THE 
  ROADWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. A FEW INCHES OF FAST FLOWING WATER IS
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD.

&&

LAT...LON 3967 11940 3958 11932 3951 11938 3956 11948
      3964 11946

$$

CS

315 
WGUS75 KREV 020218
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
718 PM PDT WED JUL 1 2015

NVC029-031-020400-
/O.CON.KREV.FF.W.0007.000000T0000Z-150702T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHOE NV-STOREY NV-
718 PM PDT WED JUL 1 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM PDT FOR
SOUTH CENTRAL WASHOE AND STOREY COUNTIES...

* AT 717 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS EARLIER 
  PRODUCING HEAVY RAIN HAVE DISSIPATED. THE WARNING WILL HOWEVER 
  CONTINUE DUE TO RUNOFF LIKELY STILL OCCURRING IN STEEP TERRAIN 
  NORTH AND SOUTH OF I-80. 

* TRAVELERS SHOULD BE PREPARED FOR ENCOUNTERING PONDING WATER ON 
  ROADWAYS THROUGH 8 PM.

LAT...LON 3967 11940 3958 11932 3951 11938 3956 11948
      3964 11946

$$

CS

009 
WGUS75 KREV 020240
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
740 PM PDT WED JUL 1 2015

NVC029-031-020250-
/O.CAN.KREV.FF.W.0007.000000T0000Z-150702T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHOE NV-STOREY NV-
740 PM PDT WED JUL 1 2015

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL WASHOE AND STOREY
COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT FOR AREAS ALONG I-80 BETWEEN SPARKS AND FERNLEY. SOME 
PONDING WATER MAY STILL EXIST ON ROADS HOWEVER.

LAT...LON 3967 11940 3958 11932 3951 11938 3956 11948
      3964 11946

$$

CS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 5:15 PM PDT	Special Weather Statement	REV		30 min
Jul 1, 5:30 PM PDT	Special Weather Statement	REV	Mineral	2 hr
Jul 1, 5:55 PM PDT	Special Weather Statement	REV	Storey	65 min
Jul 1, 6:01 PM PDT	Flash Flood Warning	REV	Lyon, Storey, Washoe	3 hr
Jul 1, 6:36 PM PDT	Special Weather Statement	REV	Mineral	39 min
Jul 1, 7:29 PM PDT	Special Weather Statement	REV	Mineral	61 min
Jul 2, 2:09 PM PDT	Special Weather Statement	REV	Lyon	36 min
Jul 2, 2:10 PM PDT	Special Weather Statement	REV	Lyon	35 min
Jul 2, 2:20 PM PDT	Special Weather Statement	REV		40 min
Jul 2, 4:55 PM PDT	Special Weather Statement	REV		35 min

Nearby

Flash Flood Warnings in Nevada, 2015 Every flash flood warning in 2015

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.