WWA Summary for All Issued by REV

Flood Watch

Flood Watch
National Weather Service Elko NV
718 AM PDT Tue Jul 21 2026

.Monsoonal moisture will stream northward into most of Northern and
Central Nevada today, with historically high atmospheric moisture
content. The strongest showers and thunderstorms today will produce
intense rainfall rates, resulting in the potential of flash flooding.

NVZ031-033>041-211815-
/O.EXT.KLKN.FA.A.0003.260721T1800Z-260722T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northern Elko-Southeastern Elko-Ruby Mountains and East Humboldt
Range in Elko-White Pine-Northern Lander and Northern Eureka-
Southern Lander and Southern Eureka-Southwest Elko-South Central
Elko-Northwestern Nye-Northeastern Nye-
Including the cities of Charleston, Lee, Duckwater, Hickison
Summit, Jiggs, Garden Pass, Eureka Airport, Emigrant Pass, West
Wendover, Ely Airport, Manhattan, Beowawe, Ryndon, Spring Creek,
Preston, Crescent Valley, Grass Valley, Tonopah, Owyhee, Lund,
South Fork, Midas, Diamond Valley, Ruby Lake, Palisade, Dunphy,
Jarbidge, Ely, Oasis, Eureka, Mountain City, Gibbs Ranch, Round
Mountain, Lamoille, Blue Eagle Ranch, Ruth, McGill, Argenta,
Pinto Summit, Battle Mountain, Elko, Tuscarora, and Cherry Creek
718 AM PDT Tue Jul 21 2026

...A FLOOD WATCH IS IN EFFECT FROM 11 AM PDT THIS MORNING THROUGH 11
PM PDT THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Most of Northern and Central Nevada.

* WHEN...From 11 AM PDT this morning until 11 PM PDT this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - The strongest showers and thunderstorms today will produce
    rainfall rates of around one and one quarter of an inch per
    hour, resulting in the potential of flash flooding.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

BS

Flood Watch
National Weather Service Reno NV
258 AM PDT Tue Jul 21 2026

CAZ072-073-NVZ001>003-220600-
/O.CON.KREV.FA.A.0003.260721T1900Z-260722T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greater Lake Tahoe Area-Mono County-Mineral and Southern Lyon
Counties-Greater Lake Tahoe Area-Greater Reno-Carson City-Minden
Area-
Including the cities of Mammoth Lakes, Yerington, Mina,
Hawthorne, Lee Vining, Verdi, Stateline, Markleeville, Schurz,
Sparks, Bridgeport, Virginia City, Smith Valley, Glenbrook,
Coleville, Tahoe City, Incline Village, Gardnerville, South Lake
Tahoe, and Truckee
258 AM PDT Tue Jul 21 2026

...FLOOD WATCH REMAINS IN EFFECT FROM NOON PDT TODAY THROUGH THIS
EVENING...

* WHAT...Flash flooding caused by excessive rainfall is possible due
  to thunderstorms.

* WHERE...Portions of east central California, including the
  following areas, Greater Lake Tahoe Area and Mono County and
  western Nevada, including the following areas, Greater Lake Tahoe
  Area, Greater Reno-Carson City-Minden Area and Mineral and
  Southern Lyon Counties.

* WHEN...From noon PDT today through this evening.

* IMPACTS...Excessive runoff may result in flooding of creeks,
  streams, urban areas, burn scars, and areas near steep terrain.

* ADDITIONAL DETAILS...
  - Deeper monsoonal moisture combined with daytime heating will
    produce scattered thunderstorms this afternoon and evening.
    Slower moving storms could redevelop over similar areas,
    increasing the risk for heavy rainfall capable of producing
    flash flooding.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

MC

Extreme Heat Watch

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1228 AM PDT Tue Jul 21 2026

AZZ002-570-571-576-CAZ522>527-NVZ016-017-020-022-025-026-221200-
/O.NEW.KVEF.XH.A.0002.260723T1700Z-260728T0300Z/
Lake Havasu and Fort Mohave-Lake Mead - AZ side-Lake Mohave - AZ
side-Northwest Deserts-Death Valley National Park-Western Mojave
Desert-Eastern Mojave Desert-Morongo Basin-Cadiz Basin-San
Bernardino County-Upper Colorado River Valley-Northeast Clark
County-Western Clark and Southern Nye County-Las Vegas Valley-
Southern Clark County-Lake Mead - NV side-Lake Mohave - NV side-
Including the cities of Valentine, Bullhead City, Baker, Desert Rock,
Topock, North Las Vegas, Golden Valley, Primm, Dolan Springs, Fort
Irwin, Temple Bar, Morongo Valley, Searchlight,
Cal-Nev-Ari, Stovepipe Wells, Wikieup, Las Vegas, Vidal Junction,
Hoover Dam, Lake Havasu City, Daggett, Furnace Creek, Amargosa
Valley, Desert Hills, Henderson, Barstow, Pahrump, Laughlin, Boulder
City, Shoshone, South Cove, Mountain Pass, Overton, Mitchell Caverns,
Kingman, Yucca, Moapa, Indian Springs, Yucca Valley, Twentynine
Palms, Mesquite, and Needles
1228 AM PDT Tue Jul 21 2026 /1228 AM MST Tue Jul 21 2026/

...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH MONDAY
EVENING...

* WHAT...Dangerously hot conditions possible.  Afternoon temperatures
  in the desert valleys will climb into the 108 to 114 degree range,
  and may exceed 115 along the Colorado River Valley, and 120 Death
  Valley.

* WHERE...Portions of northwest Arizona, southeast California, and
  southern Nevada including the Greater Mojave Desert region.

* WHEN...From Thursday morning through Monday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Monitor the latest forecasts and warnings for updates.

&&

$$

CO

Fire Weather Watch

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
256 AM PDT Tue Jul 21 2026

ORZ617-621>625-220000-
/O.CON.KMFR.FW.A.0004.260722T1800Z-260723T0600Z/
Umpqua National Forest-Siskiyou Mountains-Eastern Rogue Valley-
Southern Oregon Cascades-Klamath Basin and the Fremont-
Winema National Forest-
South Central Oregon Desert including the BLM Land in Eastern
Lake and Western Harney Counties-
256 AM PDT Tue Jul 21 2026

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR
FIRE WEATHER ZONES 617, 621, 622, 623, 624, AND 625...

* IMPACTS...Abundant lightning on dry fuels will likely create
  new ignitions across the region. Any fires that develop could
  spread rapidly. Numerous new fire starts could overwhelm
  initial attack.

* AFFECTED AREA...Areas in southern Oregon along and east of
  the Cascades, along the western foothills and slopes of the
  Cascades, and over the Siskiyous, including Fire Weather
  Zones 617...621...622...623...624 and 625.

* THUNDERSTORMS...Moving roughly north to northeast around 15
  to 20 mph. Storm mode will be mostly wet thunderstorms, but
  dry lightning strikes can occur outside of wet cores.

* OUTFLOW WINDS...Isolated gusts up to 45 mph.

* DETAILED URL...View the hazard area in detail at
  https://weather.gov/wrh/hazards?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Follow all fire restrictions. Avoid activities that could cause
sparks. Visit weather.gov/medford/wildfire for links to fire
restrictions in your area.

If you have not packet your go kit yet, now is the time to do so.
This includes items like important documents and essentials you
cannot live without. Fill your vehicle`s fuel tank. Visit
ready.gov/kit for more information.

A Fire Weather Watch means that critical fire weather conditions
are possible during the valid watch time. These conditions could
promote the rapid spread of wildfires which could become life-
threatening. Check weather.gov/medford for forecast updates and a
possible upgrade of the this watch to a Red Flag Warning.

&&

$$


Visit us at www.weather.gov/Medford

Air Quality Alert

ORC029-222100-
Jackson-
Including the cities of Medford, Ashland, Howard Prairie,
and Siskiyou Summit
316 PM PDT Mon Jul 20 2026

...AIR QUALITY ALERT FOR NORTHERN JACKSON COUNTY IN EFFECT UNTIL 2
PM PDT WEDNESDAY...

Oregon Department of Environmental Quality has issued an Air
Pollution Advisory for northern Jackson County...in effect until 2
PM PDT Wednesday.

Wildfires burning in the region combined with forecast conditions
will cause air quality levels to fluctuate and could be at unhealthy
levels.

Smoke levels can change rapidly depending on the weather. People at
risk include infants and young children, people with heart or lung
disease, older adults and pregnant people.

People can take the following precautions to protect their health:

* Follow local burn restrictions to prevent deteriorating air
  quality.
* Avoid strenuous outdoor activity during periods of poor air
  quality.
* People with heart or lung problems and young children are
  especially vulnerable. These people should stay indoors while smoke
  levels are high.
* Use certified High Efficiency Particulate Air (HEPA) filters in
  indoor heating, ventilation, cooling and air purification systems.

For additional information...please visit the web site at
https://oregonsmoke.org

$$

ORC001-025-045-212045-
Baker-Harney-Malheur-
234 PM MDT Mon Jul 20 2026 /134 PM PDT Mon Jul 20 2026/

...AIR QUALITY ADVISORY FROM THE OREGON DEPARTMENT OF ENVIRONMENTAL
QUALITY FOR Baker, Harney, and Malheur Counties...

* WHAT...High concentration of smoke particulates from wildfires.

* WHERE...Baker, Harney, and Malheur Counties.

* WHEN...UNTIL NOON PDT WEDNESDAY.

* IMPACTS...Smoke can irritate the eyes, lungs and worsen some
  medical conditions. People most at risk to adverse health effects
  include infants, young children, people with heart or lung
  disease, older adults, and pregnant women.

* ADDITIONAL DETAILS...Smoke levels can change rapidly depending on
  weather. Check current conditions on the Oregon Smoke Information
  Blog, DEQ`s Air Quality Index, or by downloading the free
  OregonAIR app on your smartphone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* Stay inside if possible. Keep windows and doors closed.

* Avoid strenuous outdoor activity.

* Use high efficiency particulate air (HEPA) filters in indoor
  ventilation systems or portable air purifiers.

* Be aware of smoke in your area and avoid places with the highest
  levels.

* If you have heart or lung disease, or asthma, follow your
  healthcare provider`s advice.

For current Oregon air quality conditions, please visit:
https://aqi.oregon.gov

For additional information, please visit:
https://www.oregon.gov/deq

$$