Alert archive / Nevada / Flash Flood Warnings in 2026
Flash Flood Warning 4, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Aug 11, 2026, 2:47 PM PDT for Mineral County, Nevada. It was in force for 3 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 11, 2026, 2:47 PM PDT (21:47 UTC)
- Expired
- Aug 11, 2026, 5:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mineral County, NV
The radar
The Reno radar (KRGX), 157 km from the middle of the area, began a volume at 21:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 2:55 PM PDT | RAIN 0.73 | 1 Nnw Hawthorne, NV | Total rainfall in less than an hour at Hawthorne Industrial Arport. Peak wind gust 46 mph. |
| Aug 11, 2:55 PM PDT | RAIN 0.9 | 1 Ne Hawthorne, NV | Thunderstorm produced nearly all the reported rain in a 35 minute period between 220 and 255 pm. Minor back yard flooding also reported at the spotters home. |
| Aug 11, 4:30 PM PDT | FLASH FLOOD | 1 Nnw Hawthorne, NV | Minor flooding and erosion along a dirt access road and through washes at the Hawthorne Industrial Airport. Small deposit of mud on one of the taxiways and standing water near some beacon lights, but no damage to main airport grounds. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 103 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 9.8 hours before the alert went out and 121 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
- 3209 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
670
WGUS55 KREV 112147
FFWREV
NVC021-120045-
/O.NEW.KREV.FF.W.0004.260811T2147Z-260812T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Reno NV
247 PM PDT Tue Aug 11 2026
The National Weather Service in Reno has issued a
* Flash Flood Warning for...
Central Mineral County in western Nevada...
* Until 545 PM PDT.
* At 247 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 1.7 inches of rain
have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Hawthorne and Hawthorne Industrial Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3854 11852 3857 11852 3857 11870 3845 11868
3845 11854
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
124
WGUS75 KREV 120041
FFSREV
Flash Flood Statement
National Weather Service Reno NV
541 PM PDT Tue Aug 11 2026
NVC021-120051-
/O.EXP.KREV.FF.W.0004.000000T0000Z-260812T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mineral NV-
541 PM PDT Tue Aug 11 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 545 PM PDT THIS AFTERNOON FOR
CENTRAL MINERAL COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3854 11852 3857 11852 3857 11870 3845 11868
3845 11854
$$What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 2:24 PM PDT, 23 minutes earlier. Its key messages:
- * West breezes increase the potential for fire growth this afternoon and evening for the Bug and Stallion Fires. * Thunderstorms with heavy rain, hail, and strong outflow winds will expand northward Wednesday and Thursday. This will increase the threat for spots of Flash Flooding and new fire starts due to lightning. * Cooler temperatures arrive Thursday with summer temperatures returning for the weekend.
Area forecast discussion, Aug 11, 2:24 PM PDT, 23 minutes before
Area Forecast Discussion...CORRECTED
National Weather Service Reno NV
224 PM PDT Tue Aug 11 2026
.KEY MESSAGES...
* West breezes increase the potential for fire growth this
afternoon and evening for the Bug and Stallion Fires.
* Thunderstorms with heavy rain, hail, and strong outflow winds
will expand northward Wednesday and Thursday. This will increase
the threat for spots of Flash Flooding and new fire starts due
to lightning.
* Cooler temperatures arrive Thursday with summer temperatures
returning for the weekend.
&&
.DISCUSSION...
Elongated area of low pressure along the west coast and high
pressure near the Four Corners region will increase moisture into
the Sierra and western NV the next couple of days. The low also
provides instability for shower and thunderstorm development into
Friday.
Hot temperatures today will continue to allow thunderstorms to
produce strong outflow winds near 50 mph, hail, and spots of
moderate to heavy rain from eastern Sierra into western NV south
of I-80. High resolution models push a 50-55 mph area of outflow
winds over the Carson Sink this evening, so there may be a large
area of dust impacting Pershing and Churchill Counties after 4-5
PM.
Increasing moisture Wednesday and Thursday, along with the low
pressure system and jet streak overhead boosts instability even
with cooler temperatures arriving. This raises the threat for
flash flooding for the eastern Sierra, and most of western NV
near and south of I-80, including the Bug and Stallion Fires.
Areas around the edge of the moisture surge from the Tahoe Basin
northward to Lassen and northern Washoe Counties will have a mix
of wet and drier storms opening the door for new fire starts due
to lightning. If abundant cloud cover develops, strong
thunderstorm and lightning activity may be muted, leaving the area
under a large area of showers with wetting rains.
By Friday, thunderstorm activity diminishes as a drier southwest
flow arrives for the weekend, but that may be a temporary break in
the activity. Simulations bring another low near the California
coast which may bring a mix of thunderstorms and/or dry-gusty
winds back to the region as early as Monday-Tuesday. Brong
&&
.AVIATION...
Shower and thunderstorm chances increase the next few days with
increasing threat for heavy rainfall Wednesday and Thursday across
western NV and the eastern Sierra.
For today, main concerns from thunderstorms are strong outflow
winds to 35-45 kts, hail, and spots of heavy rain south of TRK to
WMC from 21z today to 04z Wednesday. Simulations push strong winds
over the Carson Sink, which may lead to dust and low visibility
for NFL and LOL.
Smoke from the Bug and Stallion fires north of RNO will lower
visibilities in and around the fire perhaps impact RTS (Reno-
Stead), but west winds should keep conditions at 6 miles and up
for RNO. Brong
&&
.FIRE WEATHER...
Into this evening...Gusty and dry west to southwest winds of
20-30 mph this afternoon will bring another round of increased
fire danger to the Bug and Stallion Fires. Pyrocumulus clouds will
form above any strong bursts of fire activity on the Bug and
Stallion Fires and may collapse back on onto the fires with
strong and erratic winds this afternoon and evening. While
thunderstorms with spots of strong outflow winds near 50 mph
develop from the eastern Sierra, Carson City and Douglas County
eastward into Mineral and Churchill Counties. Rainfall may be
limited today.
Moisture increases Wednesday and Thursday leading to cooler
temperatures and wetter thunderstorms with heavy rain and spots of
flash flooding across much of the area including Bug and Stallion
Fires. Lake Tahoe northward to Lassen County will be on the edge
of the moisture increase with a mix of wet and dry storms there on
Thursday, where we have issued a Fire Weather Watch as lightning
will be more efficient at starting new fires. If abundant cloud
cover develops, strong thunderstorm and lightning activity may be
muted, leaving the area under a large area of showers with wetting
rains.
Thunderstorm activity diminished Friday though a mix of wet and
dry storm returns to western NV as moisture also decreases. The
weekend looks dry, but not hot, with low pressure returning to the
west coast which may lead to a return of thunderstorms and/or
periods of dry and gusty winds for the start of next week. Brong
&&
.REV Watches/Warnings/Advisories...
NV...Fire Weather Watch from late Wednesday night through Thursday
evening NVZ458.
Flood Watch from Wednesday afternoon through Thursday evening
NVZ001-003.
CA...Fire Weather Watch from late Wednesday night through Thursday
evening CAZ270>272-278.
Flood Watch from Wednesday afternoon through Thursday evening
CAZ073.
&&In the hours before
Special weather statement, Aug 11, 12:10 PM PDT, 2 hours 37 minutes before
Special Weather Statement
National Weather Service Reno NV
1210 PM PDT Tue Aug 11 2026
CAZ073-NVZ001-003-112100-
Mono CA-Greater Reno-Carson City-Minden Area NV-
Mineral and Southern Lyon Counties NV-
1210 PM PDT Tue Aug 11 2026
...STRONG THUNDERSTORMS WILL IMPACT MONO...MINERAL...DOUGLAS AND
LYON COUNTIES THROUGH 200 PM PDT...
At 1200 PM PDT, strong thunderstorms were developing across Mono,
Mineral, and southern Lyon counties. These storms will increase in
coverage northward through the afternoon.
HAZARD...Wind gusts up to 50 mph, penny size hail, heavy rainfall,
and blowing dust downwind of dry sinks and playas.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Mammoth Lakes, Bodie, Chalfant, Crowley Lake, Benton, June Lake,
Bridgeport, Lee Vining, Twin Lakes, Toms Place, Mono Lake, Coleville,
Topaz Lake, Hawthorne, Yerington, Wellington, Smith, Oasis, Benton
Hot Springs, and Mason.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3774 11913 3773 11926 3788 11920 3804 11931
3820 11963 3848 11954 3908 11960 3909 11930
3923 11912 3920 11887 3907 11875 3907 11789
3906 11795 3901 11818 3892 11819 3847 11770
3789 11842 3747 11783 3746 11878
TIME...MOT...LOC 1905Z 197DEG 15KT 4848 11442
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
CJSpecial weather statement, Aug 11, 1:58 PM PDT, 49 minutes before
Special Weather Statement
National Weather Service Reno NV
158 PM PDT Tue Aug 11 2026
CAZ073-NVZ001-003-004-112300-
Mono CA-Western Nevada Basin and Range including Pyramid Lake NV-
Greater Reno-Carson City-Minden Area NV-
Mineral and Southern Lyon Counties NV-
158 PM PDT Tue Aug 11 2026
...STRONG THUNDERSTORMS WILL IMPACT MONO...CHURCHILL...MINERAL...
DOUGLAS AND LYON COUNTIES THROUGH 400 PM PDT...
At 158 PM PDT, strong thunderstorms are ongoing across Mono,
Mineral, and southern Lyon counties. These storms will increase in
coverage northward through the afternoon.
HAZARD...Wind gusts up to 50 mph, penny size hail, heavy rainfall,
and blowing dust downwind of dry sinks and playas.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Fallon, Mammoth Lakes, Bodie, Chalfant, Crowley Lake, Benton, June
Lake, Bridgeport, Lee Vining, Twin Lakes, Lahontan Reservoir, Toms
Place, Mono Lake, Coleville, Topaz Lake, Hawthorne, Yerington,
Middlegate, Wellington, and Tioga Pass.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3758 11901 3774 11913 3773 11926 3788 11920
3795 11932 3805 11931 3819 11959 3840 11962
3850 11954 3880 11967 3952 11934 3951 11758
3938 11776 3910 11778 3898 11819 3889 11817
3847 11770 3789 11842 3747 11783 3746 11878
TIME...MOT...LOC 2055Z 195DEG 17KT 6272 10695
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
CJThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 9:34 AM PDT | Flood Watch | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 59 hr |
| Aug 11, 10:19 AM PDT | Fire Weather Watch | REV | Washoe | 41 hr |
| Aug 11, 12:10 PM PDT | Special Weather Statement | REV | Lyon, Mineral | 110 min |
| Aug 11, 1:02 PM PDT | Areal Flood Advisory | REV | Lyon, Mineral | 3 hr |
| Aug 11, 1:58 PM PDT | Special Weather Statement | REV | Douglas, Lyon, Mineral | 2 hr |
| Aug 11, 2:29 PM PDT | Areal Flood Advisory | REV | Mineral | 3 hr |
| Aug 11, 4:12 PM PDT | Special Weather Statement | REV | Churchill, Lyon, Mineral | 2 hr |
Nearby
Flash Flood Warnings in Nevada, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.