Alert archive / Nevada / Flash Flood Warnings in 2013

Flash Flood Warning 21, NWS Reno, NV

August 8, 2013Storey County, Washoe County, Nevada

NWS Reno, NV issued this flash flood warning at Aug 8, 2013, 5:43 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: Aug 8, 2013, 5:43 PM PDT (00:43 UTC)
Expired: Aug 8, 2013, 8:45 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), 23 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 104 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: 3 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 3081 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 151 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.

606 
WGUS55 KREV 090043
FFWREV
NVC029-031-090345-
/O.NEW.KREV.FF.W.0021.130809T0043Z-130809T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RENO NV
543 PM PDT THU AUG 8 2013

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN STOREY COUNTY IN WESTERN NEVADA...
  SOUTHEASTERN WASHOE COUNTY IN WESTERN NEVADA...

* UNTIL 845 PM PDT

* AT 537 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

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

* THE WARNED AREA INCLUDES INTERSTATE 80 IN NEVADA BETWEEN MILE
  MARKERS 28 AND 41.


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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES.


LAT...LON 3963 11932 3953 11933 3948 11938 3945 11956
      3959 11956

$$

TOLBY

2 follow-up statements

165 
WGUS75 KREV 090201
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
701 PM PDT THU AUG 8 2013

NVC029-031-090345-
/O.CON.KREV.FF.W.0021.000000T0000Z-130809T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STOREY NV-WASHOE NV-
701 PM PDT THU AUG 8 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PDT FOR
SOUTHEASTERN WASHOE AND NORTHEASTERN STOREY COUNTIES...

AT 653 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS NEAR THE WARNED AREA.

* 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 41.

EXCESSIVE RUNOFF FROM PREVIOUS HEAVY RAINFALL WILL CAUSE FLOODING OF 
SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND 
UNDERPASSES. WHILE HEAVY RAIN HAS MOVED OUT OF THE WARNING 
AREA...ADDITIONAL STORMS ARE POSSIBLE EARLY THIS EVENING. 


LAT...LON 3963 11932 3953 11933 3948 11938 3945 11956
      3959 11956

$$

HOHMANN

727 
WGUS75 KREV 090306
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
806 PM PDT THU AUG 8 2013

NVC029-031-090315-
/O.CAN.KREV.FF.W.0021.000000T0000Z-130809T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STOREY NV-WASHOE NV-
806 PM PDT THU AUG 8 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN WASHOE
AND NORTHEASTERN 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 3963 11932 3953 11933 3948 11938 3945 11956
      3959 11956

$$

TOLBY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 5:16 PM PDT	Special Weather Statement	REV	Storey	74 min
Aug 8, 5:26 PM PDT	Special Weather Statement	REV	Washoe	64 min
Aug 8, 5:48 PM PDT	Special Weather Statement	REV	Washoe	42 min
Aug 8, 6:26 PM PDT	Special Weather Statement	REV		49 min
Aug 8, 6:31 PM PDT	Special Weather Statement	REV	Storey	59 min
Aug 8, 6:33 PM PDT	Special Weather Statement	REV		27 min
Aug 8, 6:48 PM PDT	Flash Flood Warning	REV	Douglas, Lyon	117 min
Aug 8, 6:54 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	36 min
Aug 8, 7:17 PM PDT	Areal Flood Advisory	REV	Storey, Washoe	88 min
Aug 8, 7:50 PM PDT	Special Weather Statement	REV	Storey	55 min
Aug 8, 9:43 PM PDT	Special Weather Statement	REV	Washoe	32 min
Aug 9, 2:19 PM PDT	Special Weather Statement	REV		41 min
Aug 9, 3:09 PM PDT	Special Weather Statement	REV	Washoe	36 min
Aug 9, 4:23 PM PDT	Special Weather Statement	REV		52 min

Nearby

Flash Flood Warnings in Nevada, 2013 Every flash flood warning in 2013

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.