Alert archive / Nevada / Flash Flood Warnings in 2014

Flash Flood Warning 2, NWS Reno, NV

July 8, 2014Storey County, Washoe County, Nevada

NWS Reno, NV issued this flash flood warning at Jul 8, 2014, 4:05 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 8, 2014, 4:05 PM PDT (23:05 UTC)
Expired
Jul 8, 2014, 7:00 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), 24 km from the middle of the area, began a volume at 23:07 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, 11.1 hours before the alert went out and 111 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 12:00Z on 2014-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2014-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2783 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
45 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.

180 
WGUS55 KREV 082305
FFWREV
NVC029-031-090200-
/O.NEW.KREV.FF.W.0002.140708T2305Z-140709T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
405 PM PDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

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

* UNTIL 700 PM PDT

* AT 400 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A THUNDERSTORM SOUTH OF INTERSTATE 80 NEAR 
U.S.A. PARKWAY. THIS STORM IS PRODUCING TORRENTIAL RAINFALL OF 3 
INCH OR MORE IN 1 HOUR.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DERBY DAM
  AND TAHOE-RENO INDUSTRIAL CENTER

* THE WARNED AREA INCLUDES INTERSTATE 80 IN NEVADA BETWEEN MILE
  MARKERS 28 AND 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. PEOPLE
IN FLOOD PRONE AND LOW LYING AREAS SHOULD MOVE TO HIGHER GROUND. DO
NOT ATTEMPT TO CROSS SWIFT FLOWING WATER BY FOOT OR AUTOMOBILE.

&&

LAT...LON 3957 11956 3960 11943 3949 11938 3945 11953

$$

BOYD
2 follow-up statements
881 
WGUS75 KREV 090000
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
500 PM PDT TUE JUL 8 2014

NVC029-031-090200-
/O.CON.KREV.FF.W.0002.000000T0000Z-140709T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STOREY NV-WASHOE NV-
500 PM PDT TUE JUL 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM PDT FOR SOUTH
CENTRAL WASHOE AND NORTH CENTRAL STOREY COUNTIES...

AT 454 PM PDT...THE RAIN HAS LARGELY ENDED BUT FLASH FLOODING 
REMAINS POSSIBLE FROM RUNOFF OUT OF THE MOUNTAINS. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DERBY DAM AND
TAHOE-RENO INDUSTRIAL CENTER

* THE WARNED AREA INCLUDES INTERSTATE 80 IN NEVADA BETWEEN MILE      
  MARKERS 28 AND 35 AND U. S. A. PARKWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. PEOPLE
IN FLOOD PRONE AND LOW LYING AREAS SHOULD MOVE TO HIGHER GROUND. DO
NOT ATTEMPT TO CROSS SWIFT WATERS BY FOOT OR AUTOMOBILE.

&&

LAT...LON 3957 11956 3960 11943 3949 11938 3945 11953

$$

BOYD
450 
WGUS75 KREV 090058
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
558 PM PDT TUE JUL 8 2014

NVC029-031-090108-
/O.CAN.KREV.FF.W.0002.000000T0000Z-140709T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STOREY NV-WASHOE NV-
558 PM PDT TUE JUL 8 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL
WASHOE AND NORTH CENTRAL STOREY COUNTIES...

THE THREAT FOR CONTINUED FLASH FLOODING HAS DIMINISHED. REMEMBER THAT
MINOR FLOODING OR RUNOFF MAY CONTINUE IN LOW SPOTS FOR SEVERAL HOURS.

LAT...LON 3957 11956 3960 11943 3949 11938 3945 11953

$$

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 12:52 PM PDTSpecial Weather StatementREVMineral23 min
Jul 8, 2:14 PM PDTSpecial Weather StatementREVChurchill31 min
Jul 8, 2:43 PM PDTSpecial Weather StatementREVLyon47 min
Jul 8, 3:20 PM PDTSpecial Weather StatementREVStorey55 min
Jul 8, 3:27 PM PDTAreal Flood AdvisoryREVMineral3 hr
Jul 8, 3:42 PM PDTSpecial Weather StatementREVStorey93 min
Jul 8, 3:46 PM PDTSpecial Weather StatementREVPershing59 min
Jul 8, 4:31 PM PDTAreal Flood AdvisoryREVWashoe119 min
Jul 8, 4:42 PM PDTSpecial Weather StatementREV33 min

Nearby

Flash Flood Warnings in Nevada, 2014Every flash flood warning in 2014

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.