Alert archive / Nevada / Flash Flood Warnings in 2021
Flash Flood Warning 2, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Jul 26, 2021, 3:17 PM PDT for Douglas County, Nevada; Alpine County, California. 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 outline as issued.
The facts
- Issued
- Jul 26, 2021, 3:17 PM PDT (22:17 UTC)
- Expired
- Jul 26, 2021, 4:19 PM PDT
- In force
- 62 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alpine County, CA, Douglas County, NV
The radar
The Reno radar (KRGX), 112 km from the middle of the area, began a volume at 22:18 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, 10.3 hours before the alert went out and 158 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2976 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
737
WGUS55 KREV 262217
FFWREV
CAC003-NVC005-270015-
/O.NEW.KREV.FF.W.0002.210726T2217Z-210727T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Reno NV
317 PM PDT Mon Jul 26 2021
The National Weather Service in Reno has issued a
* Flash Flood Warning for...
The Tamarack Wildfire burn scar in...
Alpine County in northern California...
Douglas County in western Nevada...
* Until 515 PM PDT.
* At 317 PM PDT, Doppler radar indicated thunderstorms producing
torrential rain over the Tamarack Wildfire Burn Scar. Flash
flooding is ongoing or expected to begin shortly.
Excessive rainfall over the burn scar will result in debris flow
moving through the Tamarack Wildfire Scar. The debris flow can
consist of rock, mud, vegetation and other loose materials.
HAZARD...Flash flooding caused by thunderstorms in and around
the Tamarack Wildfire Burn Scar.
SOURCE...Radar.
IMPACT...Flooding of areas in and around the Tamarack Wildfire
Burn Scar.
* Some locations that will experience flash flooding include...
The Tamarack Wildfire, Markleeville, and portions of Highway 395
near Spring Valley and Holbrook Jct communities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3884 11976 3885 11970 3883 11960 3883 11955
3883 11954 3875 11952 3868 11965 3857 11980
3864 11989 3873 11991 3883 11980
FLASH FLOOD...RADAR INDICATED
$$
TF1 follow-up statement
355
WGUS75 KREV 262319
FFSREV
Flash Flood Statement
National Weather Service Reno NV
419 PM PDT Mon Jul 26 2021
CAC003-NVC005-262329-
/O.CAN.KREV.FF.W.0002.000000T0000Z-210727T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alpine CA-Douglas NV-
419 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING FOR THE TAMARACK WILDFIRE BURN SCAR IS
CANCELLED FOR ALPINE AND DOUGLAS COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 900 PM PDT for portions
of east central California and western Nevada.
LAT...LON 3884 11976 3885 11970 3883 11960 3883 11955
3883 11954 3875 11952 3868 11965 3857 11980
3864 11989 3873 11991 3883 11980
$$
TFThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 10:14 AM PDT | Flash Flood Watch | REV | Douglas, Lyon, Storey, Washoe | 11 hr |
| Jul 26, 2:28 PM PDT | Areal Flood Advisory | REV | Douglas, Lyon | 92 min |
| Jul 26, 4:43 PM PDT | Special Weather Statement | REV | 47 min | |
| Jul 26, 2:58 PM PDT | Special Weather Statement | REV | Sierra | 17 min |
Nearby
Flash Flood Warnings in Nevada, 2021Flash Flood Warnings in California, 2021Every flash flood warning in 2021
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.