Red Flag Warning 1, NWS Reno, NV

990 
WWUS85 KREV 251833
RFWREV

URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
1133 AM PDT Mon May 25 2026

CAZ270-278-NVZ458-260600-
/O.CON.KREV.FW.W.0001.260525T1900Z-260526T0600Z/
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
1133 AM PDT Mon May 25 2026

...RED FLAG WARNING IN EFFECT FROM 12 PM THIS AFTERNOON TO 11 PM 
PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR EASTERN 
LASSEN COUNTY, THE SURPRISE VALLEY, AND NORTHERN WASHOE COUNTY...

* CHANGES...Minor adjustment to duration of critical wind/RH, and
  increased nighttime recoveries tonight into Tuesday morning. 

* Affected Area...Fire Weather Zone 270 Surprise Valley 
  California, Fire Weather Zone 278 Eastern Lassen County, Fire 
  Weather Zone 458 Northern Washoe County.

* Winds...West-southwest 20 to 30 mph with gusts up to 45 mph.

* Humidity...RH reductions to 10-20% this afternoon. Overnight 
  recoveries of 60-90% tonight into Tuesday morning.

* Duration...4 to 7 hours.

* Impacts...The combination of gusty winds and low humidity can 
  cause fire to rapidly grow in size and intensity before first 
  responders can contain them.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outdoor activities that can cause a spark near dry
vegetation, such as yard work, target shooting, or campfires.
Follow local fire restrictions. Check weather.gov/reno for
updates and livingwithfire.info for preparedness tips.

&&

$$

NVZ423-260600-
/O.CON.KREV.FW.W.0001.260525T2100Z-260526T0600Z/
West Humboldt Basin in Pershing County-
1133 AM PDT Mon May 25 2026

...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM 
PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE WEST 
HUMBOLDT BASIN IN PERSHING COUNTY...

* CHANGES...Minor adjustments to duration of critical wind/RH and
  nighttime recoveries tonight into Tuesday morning.

* Affected Area...Fire Weather Zone 423 West Humboldt Basin in
  Pershing County, including the Quartz Fire. 

* Winds...West-southwest 15 to 25 mph with gusts up to 40 mph.

* Humidity...RH reductions to 10-15% this afternoon. Overnight
  recoveries of 30-60% tonight into Tuesday morning. 

* Duration...3 to 6 hours.

* Impacts...The combination of gusty winds and low humidity can 
  cause fire to rapidly grow in size and intensity before first 
  responders can contain them.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid outdoor activities that can cause a spark near dry
vegetation, such as yard work, target shooting, or campfires.
Follow local fire restrictions. Check weather.gov/reno for
updates and livingwithfire.info for preparedness tips.

&&

$$

http://weather.gov/reno

Area Forecast Discussion
National Weather Service Reno NV
1254 AM PDT Sun May 24 2026

.KEY MESSAGES...

* Warmer than average temperatures persist through Monday, area
  waterways continue to run dangerously cold and swift with
  continued snowmelt.

* Showers and thunderstorms expected each afternoon through the
  holiday weekend, posing impacts to outdoor activities.

* Gusty winds will bring aviation, recreation, and fire impacts
  Monday and Tuesday with cooler, showery weather from mid to late
  week.

&&

.DISCUSSION...

Showers today will migrate southward as the shortwave moves over
central Nevada, bring the best chances (25-45%) over Mono County
early this afternoon. Then, chances taper to around 20-35% and move
over eastern Mono and western Mineral counties for early evening.
Overall, winds will be light and variable this morning, but will
become westerly as gusts of 15-20 mph arrive for the afternoon. One
exception will be in the vicinity of any decaying storm, where gusty
outflow winds may reach 35 mph. Other hazards with these storms may
consider a 20-25% chance for embedded lightning, potential for heavy
rain, pellet showers or small hail. Additionally, gusty winds
associated with storms may bring choppy lake waters, blowing dust
over desert sinks.

Monday will be our last day of warm weather, it will also see
returning shower chances to Mono County (10-25%) for the
afternoon. Elsewhere, to the north, gusty westerly winds will be
on the increase Monday afternoon. The higher gusts will be found
across northern Washoe and Lassen counties into Surprise Valley in
Modoc County. Gusts of up to 45 mph are possible for these areas.
Further south, across Pershing County, gusts of up to 40 are more
likely, as the bulk of the winds will be found along the Oregon
Border. This, along with poor overnight relative humidity
recoveries and low daytime RH readings, has prompted the issuance
of a Fire Weather Watch. See more detail in the Fire Weather
section of the discussion below.

Those winds will signal the incoming cold core closed low that will
drop in from colder Canadian air and drop our temperatures back into
mid April territory. This will be about 5 degrees below seasonal
average by Wednesday, when widespread shower chances arrive. This
low, as mentioned, will draw down cold air that will bring snow
levels toward 7000-7500 feet by Wednesday morning. This will
introduce snow chances for our higher peaks, although amounts look
on the light side fo accumulations, with only 1-2 inches for
peaks around the Tahoe Basin, and 2 to 6 inches along the Sierra
Crest in Mono and southern Alpine counties. Given that this closed
low is slow to move out, shower chances, chilly temperatures and
gusty to breezy wind will be our flavor of the week through
Friday.

A weekend warmup awaits us on the other side of this chilly week
ahead. HRICH

&&

.AVIATION...

* VFR conditions are expected for most E.Sierra/W.Nevada terminals
  today with typical afternoon westerly gusts around 15-20 knots.
  KMMH could see showers this afternoon, 30-40% chances after 20z,
  with 15-20% chances of isolated thunderstorms which could yield
  MVFR conditions from brief heavy rain along with lightning, gusty
  outflow winds, and small hail.

* A strong cold front is expected to produce strong and gusty winds
  Monday into Tuesday. Wind gusts up to 30-40 mph will be favored
  mainly northward of I-80 on Monday before shifting south of US-50
  Tuesday afternoon as the front moves through.

* Expect increasing chances for turbulence, LLWS, and areas of
  reduced visibility due to areas of blowing dust which could impact
  KLOL, KNFL, and KHTH. Fuentes

&&

.FIRE WEATHER...

* Critical fire weather conditions due to gusty winds and low
  humidity are expected Monday afternoon and evening as a strong
  cold front approaches the NE California and NW Nevada.

* A FIRE WEATHER WATCH remains in effect for eastern Lassen County,
  the Surprise Valley, N.Washoe County, and the western Humboldt
  Basin, including the Quartz Fire (NE Pershing County) in
  anticipation of gusty winds and low RH Monday afternoon.

* Southwest to west winds will increase early Monday afternoon with
  sustained winds of 20-30 mph with gusts up to 45 mph across NE
  California and N.Washoe County. Areas across Pershing County
  (W.Humboldt Basin) may see gusts a touch lower around 30-40 mph.
  Minimum relative humidity is expected to be around 10-15%.

* The duration of critical wind/RH is trending towards 3-7 hours in
  Lassen and far N. Washoe County with 3-6 hours in Pershing County.

* Uncertainty remains on the continuity of receptive fuel beds, but
  local intel from local fire partners and the recent Quartz Fire
  ignition suggests the cured grasses and sagebrush will be capable
  of carrying fire in valleys/midslopes of far NW Nevada. Farther
  south, elevated fire weather conditions will be possible, but fuel
  conditions aren't as dry per local units.

* Winds remain elevated on Tuesday and will shift from southwesterly
  to north/northwesterly as a cold front sweeps through the region.
  Temperatures cool and humidity rises behind the front, with
  increasing chances of showers Wednesday and Thursday. Salas/Fuentes

&&

.REV Watches/Warnings/Advisories...
NV...Fire Weather Watch from Monday afternoon through Monday evening
     NVZ423-458.

CA...Fire Weather Watch from Monday afternoon through Monday evening
     CAZ270-278.

&&